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Add Kubernetes auth providers (#2147)

Browse source 
* Import auth providers for K8s

* Vendor updates for K8s auth providers

* Remove Azure since it is not compiling

* Update vendor to remove Azure dependencies
This commit is contained in:
John Belamaric 2018-10-02 10:50:35 -07:00 • committed by Miek Gieben
parent fb971ffff3
commit 1018a8267a
140 changed files with 27108 additions and 0 deletions
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66
Gopkg.lock generated
View file

@ -1,6 +1,14 @@
# This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
[[projects]]
digest = "1:1acadbbc24182315b628f727b2e9ac653266d1644ca4007e0766c28110afc072"
name = "cloud.google.com/go"
packages = ["compute/metadata"]
pruneopts = ""
revision = "97efc2c9ffd9fe8ef47f7f3203dc60bbca547374"
version = "v0.28.0"
[[projects]]
digest = "1:6aa683f91e93784ec7b76fe1568492f419aa3aa0b72f2087912c8c2cada7a375"
name = "github.com/DataDog/dd-trace-go"
@ -224,6 +232,22 @@
revision = "7c663266750e7d82587642f65e60bc4083f1f84e"
version = "v0.2.0"
[[projects]]
branch = "master"
digest = "1:c29d304a0d86a51588fe4a90e7e891a11877ebd31f6f263304f8d463bbeeed96"
name = "github.com/gophercloud/gophercloud"
packages = [
".",
"openstack",
"openstack/identity/v2/tenants",
"openstack/identity/v2/tokens",
"openstack/identity/v3/tokens",
"openstack/utils",
"pagination",
]
pruneopts = ""
revision = "bfc006765209a570e9a783bd7e4372e24fb72781"
[[projects]]
branch = "master"
digest = "1:009a1928b8c096338b68b5822d838a72b4d8520715c1463614476359f3282ec8"
@ -428,6 +452,7 @@
name = "golang.org/x/net"
packages = [
"context",
"context/ctxhttp",
"http/httpguts",
"http2",
"http2/hpack",
@ -438,6 +463,20 @@
pruneopts = ""
revision = "4cb1c02c05b0e749b0365f61ae859a8e0cfceed9"
[[projects]]
branch = "master"
digest = "1:b697592485cb412be4188c08ca0beed9aab87f36b86418e21acc4a3998f63734"
name = "golang.org/x/oauth2"
packages = [
".",
"google",
"internal",
"jws",
"jwt",
]
pruneopts = ""
revision = "d2e6202438beef2727060aa7cabdd924d92ebfd9"
[[projects]]
branch = "master"
digest = "1:274e6fab68b7f298bf3f70bd60d4ba0c55284d1d2034175fb3324924268ccd9e"
@ -480,6 +519,25 @@
pruneopts = ""
revision = "fbb02b2291d28baffd63558aa44b4b56f178d650"
[[projects]]
digest = "1:8c432632a230496c35a15cfdf441436f04c90e724ad99c8463ef0c82bbe93edb"
name = "google.golang.org/appengine"
packages = [
".",
"internal",
"internal/app_identity",
"internal/base",
"internal/datastore",
"internal/log",
"internal/modules",
"internal/remote_api",
"internal/urlfetch",
"urlfetch",
]
pruneopts = ""
revision = "ae0ab99deb4dc413a2b4bd6c8bdd0eb67f1e4d06"
version = "v1.2.0"
[[projects]]
branch = "master"
digest = "1:a5959f4640612317b0d3122569b7c02565ba6277aa0374cff2ed610c81ef8d74"
@ -697,9 +755,13 @@
"pkg/apis/clientauthentication/v1beta1",
"pkg/version",
"plugin/pkg/client/auth/exec",
"plugin/pkg/client/auth/gcp",
"plugin/pkg/client/auth/oidc",
"plugin/pkg/client/auth/openstack",
"rest",
"rest/watch",
"testing",
"third_party/forked/golang/template",
"tools/auth",
"tools/cache",
"tools/clientcmd",
@ -716,6 +778,7 @@
"util/flowcontrol",
"util/homedir",
"util/integer",
"util/jsonpath",
"util/retry",
]
pruneopts = ""
@ -763,6 +826,9 @@
"k8s.io/apimachinery/pkg/watch",
"k8s.io/client-go/kubernetes",
"k8s.io/client-go/kubernetes/fake",
"k8s.io/client-go/plugin/pkg/client/auth/gcp",
"k8s.io/client-go/plugin/pkg/client/auth/oidc",
"k8s.io/client-go/plugin/pkg/client/auth/openstack",
"k8s.io/client-go/rest",
"k8s.io/client-go/tools/cache",
"k8s.io/client-go/tools/clientcmd",

8
plugin/kubernetes/setup.go
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@ -19,6 +19,14 @@ import (
"github.com/mholt/caddy"
"github.com/miekg/dns"
meta "k8s.io/apimachinery/pkg/apis/meta/v1"
// Excluding azure because it is failing to compile
// pull this in here, because we want it excluded if plugin.cfg doesn't have k8s
_ "k8s.io/client-go/plugin/pkg/client/auth/gcp"
// pull this in here, because we want it excluded if plugin.cfg doesn't have k8s
_ "k8s.io/client-go/plugin/pkg/client/auth/oidc"
// pull this in here, because we want it excluded if plugin.cfg doesn't have k8s
_ "k8s.io/client-go/plugin/pkg/client/auth/openstack"
"k8s.io/client-go/tools/clientcmd"
)

25
vendor/cloud.google.com/go/.travis.yml generated vendored Normal file
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@ -0,0 +1,25 @@
sudo: false
language: go
go:
- 1.6.x
- 1.7.x
- 1.8.x
- 1.9.x
- 1.10.x
- 1.11.x
install:
- go get -v cloud.google.com/go/...
script:
- openssl aes-256-cbc -K $encrypted_a8b3f4fc85f4_key -iv $encrypted_a8b3f4fc85f4_iv -in keys.tar.enc -out keys.tar -d
- tar xvf keys.tar
- GCLOUD_TESTS_GOLANG_PROJECT_ID="dulcet-port-762"
GCLOUD_TESTS_GOLANG_KEY="$(pwd)/dulcet-port-762-key.json"
GCLOUD_TESTS_GOLANG_FIRESTORE_PROJECT_ID="gcloud-golang-firestore-tests"
GCLOUD_TESTS_GOLANG_FIRESTORE_KEY="$(pwd)/gcloud-golang-firestore-tests-key.json"
GCLOUD_TESTS_GOLANG_KEYRING="projects/dulcet-port-762/locations/us/keyRings/go-integration-test"
GCLOUD_TESTS_GOLANG_ENABLE_REPLAY=yes
travis_wait ./run-tests.sh $TRAVIS_COMMIT
env:
matrix:
# The GCLOUD_TESTS_API_KEY environment variable.
secure: VdldogUOoubQ60LhuHJ+g/aJoBiujkSkWEWl79Zb8cvQorcQbxISS+JsOOp4QkUOU4WwaHAm8/3pIH1QMWOR6O78DaLmDKi5Q4RpkVdCpUXy+OAfQaZIcBsispMrjxLXnqFjo9ELnrArfjoeCTzaX0QTCfwQwVmigC8rR30JBKI=

15
vendor/cloud.google.com/go/AUTHORS generated vendored Normal file
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@ -0,0 +1,15 @@
# This is the official list of cloud authors for copyright purposes.
# This file is distinct from the CONTRIBUTORS files.
# See the latter for an explanation.
# Names should be added to this file as:
# Name or Organization <email address>
# The email address is not required for organizations.
Filippo Valsorda <hi@filippo.io>
Google Inc.
Ingo Oeser <nightlyone@googlemail.com>
Palm Stone Games, Inc.
Paweł Knap <pawelknap88@gmail.com>
Péter Szilágyi <peterke@gmail.com>
Tyler Treat <ttreat31@gmail.com>

915
vendor/cloud.google.com/go/CHANGES.md generated vendored Normal file
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@ -0,0 +1,915 @@
# Changes
## v0.28.0
- bigtable:
- Emulator returns Unimplemented for snapshot RPCs.
- bigquery:
- Support zero-length repeated, nested fields.
- cloud assets:
- Add v1beta client.
- datastore:
- Don't nil out transaction ID on retry.
- firestore:
- BREAKING CHANGE: When watching a query with Query.Snapshots, QuerySnapshotIterator.Next
returns a QuerySnapshot which contains read time, result size, change list and the DocumentIterator
(previously, QuerySnapshotIterator.Next returned just the DocumentIterator). See: https://godoc.org/cloud.google.com/go/firestore#Query.Snapshots.
- Add array-contains operator.
- IAM:
- Add iam/credentials/apiv1 client.
- pubsub:
- Canceling the context passed to Subscription.Receive causes Receive to return when
processing finishes on all messages currently in progress, even if new messages are arriving.
- redis:
- Add redis/apiv1 client.
- storage:
- Add Reader.Attrs.
- Deprecate several Reader getter methods: please use Reader.Attrs for these instead.
- Add ObjectHandle.Bucket and ObjectHandle.Object methods.
## v0.27.0
- bigquery:
- Allow modification of encryption configuration and partitioning options to a table via the Update call.
- Add a SchemaFromJSON function that converts a JSON table schema.
- bigtable:
- Restore cbt count functionality.
- containeranalysis:
- Add v1beta client.
- spanner:
- Fix a case where an iterator might not be closed correctly.
- storage:
- Add ServiceAccount method https://godoc.org/cloud.google.com/go/storage#Client.ServiceAccount.
- Add a method to Reader that returns the parsed value of the Last-Modified header.
## v0.26.0
- bigquery:
- Support filtering listed jobs by min/max creation time.
- Support data clustering (https://godoc.org/cloud.google.com/go/bigquery#Clustering).
- Include job creator email in Job struct.
- bigtable:
- Add `RowSampleFilter`.
- emulator: BREAKING BEHAVIOR CHANGE: Regexps in row, family, column and value filters
must match the entire target string to succeed. Previously, the emulator was
succeeding on partial matches.
NOTE: As of this release, this change only affects the emulator when run
from this repo (bigtable/cmd/emulator/cbtemulator.go). The version launched
from `gcloud` will be updated in a subsequent `gcloud` release.
- dataproc: Add apiv1beta2 client.
- datastore: Save non-nil pointer fields on omitempty.
- logging: populate Entry.Trace from the HTTP X-Cloud-Trace-Context header.
- logging/logadmin: Support writer_identity and include_children.
- pubsub:
- Support labels on topics and subscriptions.
- Support message storage policy for topics.
- Use the distribution of ack times to determine when to extend ack deadlines.
The only user-visible effect of this change should be that programs that
call only `Subscription.Receive` need no IAM permissions other than `Pub/Sub
Subscriber`.
- storage:
- Support predefined ACLs.
- Support additional ACL fields other than Entity and Role.
- Support bucket websites.
- Support bucket logging.
## v0.25.0
- Added [Code of Conduct](https://github.com/GoogleCloudPlatform/google-cloud-go/blob/master/CODE_OF_CONDUCT.md)
- bigtable:
- cbt: Support a GC policy of "never".
- errorreporting:
- Support User.
- Close now calls Flush.
- Use OnError (previously ignored).
- Pass through the RPC error as-is to OnError.
- httpreplay: A tool for recording and replaying HTTP requests
(for the bigquery and storage clients in this repo).
- kms: v1 client added
- logging: add SourceLocation to Entry.
- storage: improve CRC checking on read.
## v0.24.0
- bigquery: Support for the NUMERIC type.
- bigtable:
- cbt: Optionally specify columns for read/lookup
- Support instance-level administration.
- oslogin: New client for the OS Login API.
- pubsub:
- The package is now stable. There will be no further breaking changes.
- Internal changes to improve Subscription.Receive behavior.
- storage: Support updating bucket lifecycle config.
- spanner: Support struct-typed parameter bindings.
- texttospeech: New client for the Text-to-Speech API.
## v0.23.0
- bigquery: Add DDL stats to query statistics.
- bigtable:
- cbt: Add cells-per-column limit for row lookup.
- cbt: Make it possible to combine read filters.
- dlp: v2beta2 client removed. Use the v2 client instead.
- firestore, spanner: Fix compilation errors due to protobuf changes.
## v0.22.0
- bigtable:
- cbt: Support cells per column limit for row read.
- bttest: Correctly handle empty RowSet.
- Fix ReadModifyWrite operation in emulator.
- Fix API path in GetCluster.
- bigquery:
- BEHAVIOR CHANGE: Retry on 503 status code.
- Add dataset.DeleteWithContents.
- Add SchemaUpdateOptions for query jobs.
- Add Timeline to QueryStatistics.
- Add more stats to ExplainQueryStage.
- Support Parquet data format.
- datastore:
- Support omitempty for times.
- dlp:
- **BREAKING CHANGE:** Remove v1beta1 client. Please migrate to the v2 client,
which is now out of beta.
- Add v2 client.
- firestore:
- BEHAVIOR CHANGE: Treat set({}, MergeAll) as valid.
- iam:
- Support JWT signing via SignJwt callopt.
- profiler:
- BEHAVIOR CHANGE: PollForSerialOutput returns an error when context.Done.
- BEHAVIOR CHANGE: Increase the initial backoff to 1 minute.
- Avoid returning empty serial port output.
- pubsub:
- BEHAVIOR CHANGE: Don't backoff during next retryable error once stream is healthy.
- BEHAVIOR CHANGE: Don't backoff on EOF.
- pstest: Support Acknowledge and ModifyAckDeadline RPCs.
- redis:
- Add v1 beta Redis client.
- spanner:
- Support SessionLabels.
- speech:
- Add api v1 beta1 client.
- storage:
- BEHAVIOR CHANGE: Retry reads when retryable error occurs.
- Fix delete of object in requester-pays bucket.
- Support KMS integration.
## v0.21.0
- bigquery:
- Add OpenCensus tracing.
- firestore:
- **BREAKING CHANGE:** If a document does not exist, return a DocumentSnapshot
whose Exists method returns false. DocumentRef.Get and Transaction.Get
return the non-nil DocumentSnapshot in addition to a NotFound error.
**DocumentRef.GetAll and Transaction.GetAll return a non-nil
DocumentSnapshot instead of nil.**
- Add DocumentIterator.Stop. **Call Stop whenever you are done with a
DocumentIterator.**
- Added Query.Snapshots and DocumentRef.Snapshots, which provide realtime
notification of updates. See https://cloud.google.com/firestore/docs/query-data/listen.
- Canceling an RPC now always returns a grpc.Status with codes.Canceled.
- spanner:
- Add `CommitTimestamp`, which supports inserting the commit timestamp of a
transaction into a column.
## v0.20.0
- bigquery: Support SchemaUpdateOptions for load jobs.
- bigtable:
- Add SampleRowKeys.
- cbt: Support union, intersection GCPolicy.
- Retry admin RPCS.
- Add trace spans to retries.
- datastore: Add OpenCensus tracing.
- firestore:
- Fix queries involving Null and NaN.
- Allow Timestamp protobuffers for time values.
- logging: Add a WriteTimeout option.
- spanner: Support Batch API.
- storage: Add OpenCensus tracing.
## v0.19.0
- bigquery:
- Support customer-managed encryption keys.
- bigtable:
- Improved emulator support.
- Support GetCluster.
- datastore:
- Add general mutations.
- Support pointer struct fields.
- Support transaction options.
- firestore:
- Add Transaction.GetAll.
- Support document cursors.
- logging:
- Support concurrent RPCs to the service.
- Support per-entry resources.
- profiler:
- Add config options to disable heap and thread profiling.
- Read the project ID from $GOOGLE_CLOUD_PROJECT when it's set.
- pubsub:
- BEHAVIOR CHANGE: Release flow control after ack/nack (instead of after the
callback returns).
- Add SubscriptionInProject.
- Add OpenCensus instrumentation for streaming pull.
- storage:
- Support CORS.
## v0.18.0
- bigquery:
- Marked stable.
- Schema inference of nullable fields supported.
- Added TimePartitioning to QueryConfig.
- firestore: Data provided to DocumentRef.Set with a Merge option can contain
Delete sentinels.
- logging: Clients can accept parent resources other than projects.
- pubsub:
- pubsub/pstest: A lighweight fake for pubsub. Experimental; feedback welcome.
- Support updating more subscription metadata: AckDeadline,
RetainAckedMessages and RetentionDuration.
- oslogin/apiv1beta: New client for the Cloud OS Login API.
- rpcreplay: A package for recording and replaying gRPC traffic.
- spanner:
- Add a ReadWithOptions that supports a row limit, as well as an index.
- Support query plan and execution statistics.
- Added [OpenCensus](http://opencensus.io) support.
- storage: Clarify checksum validation for gzipped files (it is not validated
when the file is served uncompressed).
## v0.17.0
- firestore BREAKING CHANGES:
- Remove UpdateMap and UpdateStruct; rename UpdatePaths to Update.
Change
`docref.UpdateMap(ctx, map[string]interface{}{"a.b", 1})`
to
`docref.Update(ctx, []firestore.Update{{Path: "a.b", Value: 1}})`
Change
`docref.UpdateStruct(ctx, []string{"Field"}, aStruct)`
to
`docref.Update(ctx, []firestore.Update{{Path: "Field", Value: aStruct.Field}})`
- Rename MergePaths to Merge; require args to be FieldPaths
- A value stored as an integer can be read into a floating-point field, and vice versa.
- bigtable/cmd/cbt:
- Support deleting a column.
- Add regex option for row read.
- spanner: Mark stable.
- storage:
- Add Reader.ContentEncoding method.
- Fix handling of SignedURL headers.
- bigquery:
- If Uploader.Put is called with no rows, it returns nil without making a
call.
- Schema inference supports the "nullable" option in struct tags for
non-required fields.
- TimePartitioning supports "Field".
## v0.16.0
- Other bigquery changes:
- `JobIterator.Next` returns `*Job`; removed `JobInfo` (BREAKING CHANGE).
- UseStandardSQL is deprecated; set UseLegacySQL to true if you need
Legacy SQL.
- Uploader.Put will generate a random insert ID if you do not provide one.
- Support time partitioning for load jobs.
- Support dry-run queries.
- A `Job` remembers its last retrieved status.
- Support retrieving job configuration.
- Support labels for jobs and tables.
- Support dataset access lists.
- Improve support for external data sources, including data from Bigtable and
Google Sheets, and tables with external data.
- Support updating a table's view configuration.
- Fix uploading civil times with nanoseconds.
- storage:
- Support PubSub notifications.
- Support Requester Pays buckets.
- profiler: Support goroutine and mutex profile types.
## v0.15.0
- firestore: beta release. See the
[announcement](https://firebase.googleblog.com/2017/10/introducing-cloud-firestore.html).
- errorreporting: The existing package has been redesigned.
- errors: This package has been removed. Use errorreporting.
## v0.14.0
- bigquery BREAKING CHANGES:
- Standard SQL is the default for queries and views.
- `Table.Create` takes `TableMetadata` as a second argument, instead of
options.
- `Dataset.Create` takes `DatasetMetadata` as a second argument.
- `DatasetMetadata` field `ID` renamed to `FullID`
- `TableMetadata` field `ID` renamed to `FullID`
- Other bigquery changes:
- The client will append a random suffix to a provided job ID if you set
`AddJobIDSuffix` to true in a job config.
- Listing jobs is supported.
- Better retry logic.
- vision, language, speech: clients are now stable
- monitoring: client is now beta
- profiler:
- Rename InstanceName to Instance, ZoneName to Zone
- Auto-detect service name and version on AppEngine.
## v0.13.0
- bigquery: UseLegacySQL options for CreateTable and QueryConfig. Use these
options to continue using Legacy SQL after the client switches its default
to Standard SQL.
- bigquery: Support for updating dataset labels.
- bigquery: Set DatasetIterator.ProjectID to list datasets in a project other
than the client's. DatasetsInProject is no longer needed and is deprecated.
- bigtable: Fail ListInstances when any zones fail.
- spanner: support decoding of slices of basic types (e.g. []string, []int64,
etc.)
- logging/logadmin: UpdateSink no longer creates a sink if it is missing
(actually a change to the underlying service, not the client)
- profiler: Service and ServiceVersion replace Target in Config.
## v0.12.0
- pubsub: Subscription.Receive now uses streaming pull.
- pubsub: add Client.TopicInProject to access topics in a different project
than the client.
- errors: renamed errorreporting. The errors package will be removed shortly.
- datastore: improved retry behavior.
- bigquery: support updates to dataset metadata, with etags.
- bigquery: add etag support to Table.Update (BREAKING: etag argument added).
- bigquery: generate all job IDs on the client.
- storage: support bucket lifecycle configurations.
## v0.11.0
- Clients for spanner, pubsub and video are now in beta.
- New client for DLP.
- spanner: performance and testing improvements.
- storage: requester-pays buckets are supported.
- storage, profiler, bigtable, bigquery: bug fixes and other minor improvements.
- pubsub: bug fixes and other minor improvements
## v0.10.0
- pubsub: Subscription.ModifyPushConfig replaced with Subscription.Update.
- pubsub: Subscription.Receive now runs concurrently for higher throughput.
- vision: cloud.google.com/go/vision is deprecated. Use
cloud.google.com/go/vision/apiv1 instead.
- translation: now stable.
- trace: several changes to the surface. See the link below.
### Code changes required from v0.9.0
- pubsub: Replace
```
sub.ModifyPushConfig(ctx, pubsub.PushConfig{Endpoint: "https://example.com/push"})
```
with
```
sub.Update(ctx, pubsub.SubscriptionConfigToUpdate{
PushConfig: &pubsub.PushConfig{Endpoint: "https://example.com/push"},
})
```
- trace: traceGRPCServerInterceptor will be provided from *trace.Client.
Given an initialized `*trace.Client` named `tc`, instead of
```
s := grpc.NewServer(grpc.UnaryInterceptor(trace.GRPCServerInterceptor(tc)))
```
write
```
s := grpc.NewServer(grpc.UnaryInterceptor(tc.GRPCServerInterceptor()))
```
- trace trace.GRPCClientInterceptor will also provided from *trace.Client.
Instead of
```
conn, err := grpc.Dial(srv.Addr, grpc.WithUnaryInterceptor(trace.GRPCClientInterceptor()))
```
write
```
conn, err := grpc.Dial(srv.Addr, grpc.WithUnaryInterceptor(tc.GRPCClientInterceptor()))
```
- trace: We removed the deprecated `trace.EnableGRPCTracing`. Use the gRPC
interceptor as a dial option as shown below when initializing Cloud package
clients:
```
c, err := pubsub.NewClient(ctx, "project-id", option.WithGRPCDialOption(grpc.WithUnaryInterceptor(tc.GRPCClientInterceptor())))
if err != nil {
...
}
```
## v0.9.0
- Breaking changes to some autogenerated clients.
- rpcreplay package added.
## v0.8.0
- profiler package added.
- storage:
- Retry Objects.Insert call.
- Add ProgressFunc to WRiter.
- pubsub: breaking changes:
- Publish is now asynchronous ([announcement](https://groups.google.com/d/topic/google-api-go-announce/aaqRDIQ3rvU/discussion)).
- Subscription.Pull replaced by Subscription.Receive, which takes a callback ([announcement](https://groups.google.com/d/topic/google-api-go-announce/8pt6oetAdKc/discussion)).
- Message.Done replaced with Message.Ack and Message.Nack.
## v0.7.0
- Release of a client library for Spanner. See
the
[blog
post](https://cloudplatform.googleblog.com/2017/02/introducing-Cloud-Spanner-a-global-database-service-for-mission-critical-applications.html).
Note that although the Spanner service is beta, the Go client library is alpha.
## v0.6.0
- Beta release of BigQuery, DataStore, Logging and Storage. See the
[blog post](https://cloudplatform.googleblog.com/2016/12/announcing-new-google-cloud-client.html).
- bigquery:
- struct support. Read a row directly into a struct with
`RowIterator.Next`, and upload a row directly from a struct with `Uploader.Put`.
You can also use field tags. See the [package documentation][cloud-bigquery-ref]
for details.
- The `ValueList` type was removed. It is no longer necessary. Instead of
```go
var v ValueList
... it.Next(&v) ..
```
use
```go
var v []Value
... it.Next(&v) ...
```
- Previously, repeatedly calling `RowIterator.Next` on the same `[]Value` or
`ValueList` would append to the slice. Now each call resets the size to zero first.
- Schema inference will infer the SQL type BYTES for a struct field of
type []byte. Previously it inferred STRING.
- The types `uint`, `uint64` and `uintptr` are no longer supported in schema
inference. BigQuery's integer type is INT64, and those types may hold values
that are not correctly represented in a 64-bit signed integer.
## v0.5.0
- bigquery:
- The SQL types DATE, TIME and DATETIME are now supported. They correspond to
the `Date`, `Time` and `DateTime` types in the new `cloud.google.com/go/civil`
package.
- Support for query parameters.
- Support deleting a dataset.
- Values from INTEGER columns will now be returned as int64, not int. This
will avoid errors arising from large values on 32-bit systems.
- datastore:
- Nested Go structs encoded as Entity values, instead of a
flattened list of the embedded struct's fields. This means that you may now have twice-nested slices, eg.
```go
type State struct {
Cities []struct{
Populations []int
}
}
```
See [the announcement](https://groups.google.com/forum/#!topic/google-api-go-announce/79jtrdeuJAg) for
more details.
- Contexts no longer hold namespaces; instead you must set a key's namespace
explicitly. Also, key functions have been changed and renamed.
- The WithNamespace function has been removed. To specify a namespace in a Query, use the Query.Namespace method:
```go
q := datastore.NewQuery("Kind").Namespace("ns")
```
- All the fields of Key are exported. That means you can construct any Key with a struct literal:
```go
k := &Key{Kind: "Kind", ID: 37, Namespace: "ns"}
```
- As a result of the above, the Key methods Kind, ID, d.Name, Parent, SetParent and Namespace have been removed.
- `NewIncompleteKey` has been removed, replaced by `IncompleteKey`. Replace
```go
NewIncompleteKey(ctx, kind, parent)
```
with
```go
IncompleteKey(kind, parent)
```
and if you do use namespaces, make sure you set the namespace on the returned key.
- `NewKey` has been removed, replaced by `NameKey` and `IDKey`. Replace
```go
NewKey(ctx, kind, name, 0, parent)
NewKey(ctx, kind, "", id, parent)
```
with
```go
NameKey(kind, name, parent)
IDKey(kind, id, parent)
```
and if you do use namespaces, make sure you set the namespace on the returned key.
- The `Done` variable has been removed. Replace `datastore.Done` with `iterator.Done`, from the package `google.golang.org/api/iterator`.
- The `Client.Close` method will have a return type of error. It will return the result of closing the underlying gRPC connection.
- See [the announcement](https://groups.google.com/forum/#!topic/google-api-go-announce/hqXtM_4Ix-0) for
more details.
## v0.4.0
- bigquery:
-`NewGCSReference` is now a function, not a method on `Client`.
- `Table.LoaderFrom` now accepts a `ReaderSource`, enabling
loading data into a table from a file or any `io.Reader`.
* Client.Table and Client.OpenTable have been removed.
Replace
```go
client.OpenTable("project", "dataset", "table")
```
with
```go
client.DatasetInProject("project", "dataset").Table("table")
```
* Client.CreateTable has been removed.
Replace
```go
client.CreateTable(ctx, "project", "dataset", "table")
```
with
```go
client.DatasetInProject("project", "dataset").Table("table").Create(ctx)
```
* Dataset.ListTables have been replaced with Dataset.Tables.
Replace
```go
tables, err := ds.ListTables(ctx)
```
with
```go
it := ds.Tables(ctx)
for {
table, err := it.Next()
if err == iterator.Done {
break
}
if err != nil {
// TODO: Handle error.
}
// TODO: use table.
}
```
* Client.Read has been replaced with Job.Read, Table.Read and Query.Read.
Replace
```go
it, err := client.Read(ctx, job)
```
with
```go
it, err := job.Read(ctx)
```
and similarly for reading from tables or queries.
* The iterator returned from the Read methods is now named RowIterator. Its
behavior is closer to the other iterators in these libraries. It no longer
supports the Schema method; see the next item.
Replace
```go
for it.Next(ctx) {
var vals ValueList
if err := it.Get(&vals); err != nil {
// TODO: Handle error.
}
// TODO: use vals.
}
if err := it.Err(); err != nil {
// TODO: Handle error.
}
```
with
```
for {
var vals ValueList
err := it.Next(&vals)
if err == iterator.Done {
break
}
if err != nil {
// TODO: Handle error.
}
// TODO: use vals.
}
```
Instead of the `RecordsPerRequest(n)` option, write
```go
it.PageInfo().MaxSize = n
```
Instead of the `StartIndex(i)` option, write
```go
it.StartIndex = i
```
* ValueLoader.Load now takes a Schema in addition to a slice of Values.
Replace
```go
func (vl *myValueLoader) Load(v []bigquery.Value)
```
with
```go
func (vl *myValueLoader) Load(v []bigquery.Value, s bigquery.Schema)
```
* Table.Patch is replace by Table.Update.
Replace
```go
p := table.Patch()
p.Description("new description")
metadata, err := p.Apply(ctx)
```
with
```go
metadata, err := table.Update(ctx, bigquery.TableMetadataToUpdate{
Description: "new description",
})
```
* Client.Copy is replaced by separate methods for each of its four functions.
All options have been replaced by struct fields.
* To load data from Google Cloud Storage into a table, use Table.LoaderFrom.
Replace
```go
client.Copy(ctx, table, gcsRef)
```
with
```go
table.LoaderFrom(gcsRef).Run(ctx)
```
Instead of passing options to Copy, set fields on the Loader:
```go
loader := table.LoaderFrom(gcsRef)
loader.WriteDisposition = bigquery.WriteTruncate
```
* To extract data from a table into Google Cloud Storage, use
Table.ExtractorTo. Set fields on the returned Extractor instead of
passing options.
Replace
```go
client.Copy(ctx, gcsRef, table)
```
with
```go
table.ExtractorTo(gcsRef).Run(ctx)
```
* To copy data into a table from one or more other tables, use
Table.CopierFrom. Set fields on the returned Copier instead of passing options.
Replace
```go
client.Copy(ctx, dstTable, srcTable)
```
with
```go
dst.Table.CopierFrom(srcTable).Run(ctx)
```
* To start a query job, create a Query and call its Run method. Set fields
on the query instead of passing options.
Replace
```go
client.Copy(ctx, table, query)
```
with
```go
query.Run(ctx)
```
* Table.NewUploader has been renamed to Table.Uploader. Instead of options,
configure an Uploader by setting its fields.
Replace
```go
u := table.NewUploader(bigquery.UploadIgnoreUnknownValues())
```
with
```go
u := table.NewUploader(bigquery.UploadIgnoreUnknownValues())
u.IgnoreUnknownValues = true
```
- pubsub: remove `pubsub.Done`. Use `iterator.Done` instead, where `iterator` is the package
`google.golang.org/api/iterator`.
## v0.3.0
- storage:
* AdminClient replaced by methods on Client.
Replace
```go
adminClient.CreateBucket(ctx, bucketName, attrs)
```
with
```go
client.Bucket(bucketName).Create(ctx, projectID, attrs)
```
* BucketHandle.List replaced by BucketHandle.Objects.
Replace
```go
for query != nil {
objs, err := bucket.List(d.ctx, query)
if err != nil { ... }
query = objs.Next
for _, obj := range objs.Results {
fmt.Println(obj)
}
}
```
with
```go
iter := bucket.Objects(d.ctx, query)
for {
obj, err := iter.Next()
if err == iterator.Done {
break
}
if err != nil { ... }
fmt.Println(obj)
}
```
(The `iterator` package is at `google.golang.org/api/iterator`.)
Replace `Query.Cursor` with `ObjectIterator.PageInfo().Token`.
Replace `Query.MaxResults` with `ObjectIterator.PageInfo().MaxSize`.
* ObjectHandle.CopyTo replaced by ObjectHandle.CopierFrom.
Replace
```go
attrs, err := src.CopyTo(ctx, dst, nil)
```
with
```go
attrs, err := dst.CopierFrom(src).Run(ctx)
```
Replace
```go
attrs, err := src.CopyTo(ctx, dst, &storage.ObjectAttrs{ContextType: "text/html"})
```
with
```go
c := dst.CopierFrom(src)
c.ContextType = "text/html"
attrs, err := c.Run(ctx)
```
* ObjectHandle.ComposeFrom replaced by ObjectHandle.ComposerFrom.
Replace
```go
attrs, err := dst.ComposeFrom(ctx, []*storage.ObjectHandle{src1, src2}, nil)
```
with
```go
attrs, err := dst.ComposerFrom(src1, src2).Run(ctx)
```
* ObjectHandle.Update's ObjectAttrs argument replaced by ObjectAttrsToUpdate.
Replace
```go
attrs, err := obj.Update(ctx, &storage.ObjectAttrs{ContextType: "text/html"})
```
with
```go
attrs, err := obj.Update(ctx, storage.ObjectAttrsToUpdate{ContextType: "text/html"})
```
* ObjectHandle.WithConditions replaced by ObjectHandle.If.
Replace
```go
obj.WithConditions(storage.Generation(gen), storage.IfMetaGenerationMatch(mgen))
```
with
```go
obj.Generation(gen).If(storage.Conditions{MetagenerationMatch: mgen})
```
Replace
```go
obj.WithConditions(storage.IfGenerationMatch(0))
```
with
```go
obj.If(storage.Conditions{DoesNotExist: true})
```
* `storage.Done` replaced by `iterator.Done` (from package `google.golang.org/api/iterator`).
- Package preview/logging deleted. Use logging instead.
## v0.2.0
- Logging client replaced with preview version (see below).
- New clients for some of Google's Machine Learning APIs: Vision, Speech, and
Natural Language.
- Preview version of a new [Stackdriver Logging][cloud-logging] client in
[`cloud.google.com/go/preview/logging`](https://godoc.org/cloud.google.com/go/preview/logging).
This client uses gRPC as its transport layer, and supports log reading, sinks
and metrics. It will replace the current client at `cloud.google.com/go/logging` shortly.

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# Contributor Code of Conduct
As contributors and maintainers of this project,
and in the interest of fostering an open and welcoming community,
we pledge to respect all people who contribute through reporting issues,
posting feature requests, updating documentation,
submitting pull requests or patches, and other activities.
We are committed to making participation in this project
a harassment-free experience for everyone,
regardless of level of experience, gender, gender identity and expression,
sexual orientation, disability, personal appearance,
body size, race, ethnicity, age, religion, or nationality.
Examples of unacceptable behavior by participants include:
* The use of sexualized language or imagery
* Personal attacks
* Trolling or insulting/derogatory comments
* Public or private harassment
* Publishing other's private information,
such as physical or electronic
addresses, without explicit permission
* Other unethical or unprofessional conduct.
Project maintainers have the right and responsibility to remove, edit, or reject
comments, commits, code, wiki edits, issues, and other contributions
that are not aligned to this Code of Conduct.
By adopting this Code of Conduct,
project maintainers commit themselves to fairly and consistently
applying these principles to every aspect of managing this project.
Project maintainers who do not follow or enforce the Code of Conduct
may be permanently removed from the project team.
This code of conduct applies both within project spaces and in public spaces
when an individual is representing the project or its community.
Instances of abusive, harassing, or otherwise unacceptable behavior
may be reported by opening an issue
or contacting one or more of the project maintainers.
This Code of Conduct is adapted from the [Contributor Covenant](http://contributor-covenant.org), version 1.2.0,
available at [http://contributor-covenant.org/version/1/2/0/](http://contributor-covenant.org/version/1/2/0/)

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# Contributing
1. Sign one of the contributor license agreements below.
1. `go get golang.org/x/review/git-codereview` to install the code reviewing tool.
1. You will need to ensure that your `GOBIN` directory (by default
`$GOPATH/bin`) is in your `PATH` so that git can find the command.
1. If you would like, you may want to set up aliases for git-codereview,
such that `git codereview change` becomes `git change`. See the
[godoc](https://godoc.org/golang.org/x/review/git-codereview) for details.
1. Should you run into issues with the git-codereview tool, please note
that all error messages will assume that you have set up these
aliases.
1. Get the cloud package by running `go get -d cloud.google.com/go`.
1. If you have already checked out the source, make sure that the remote git
origin is https://code.googlesource.com/gocloud:
git remote set-url origin https://code.googlesource.com/gocloud
1. Make sure your auth is configured correctly by visiting
https://code.googlesource.com, clicking "Generate Password", and following
the directions.
1. Make changes and create a change by running `git codereview change <name>`,
provide a commit message, and use `git codereview mail` to create a Gerrit CL.
1. Keep amending to the change with `git codereview change` and mail as your receive
feedback. Each new mailed amendment will create a new patch set for your change in Gerrit.
## Integration Tests
In addition to the unit tests, you may run the integration test suite.
To run the integrations tests, creating and configuration of a project in the
Google Developers Console is required.
After creating a project, you must [create a service account](https://developers.google.com/identity/protocols/OAuth2ServiceAccount#creatinganaccount).
Ensure the project-level **Owner**
[IAM role](console.cloud.google.com/iam-admin/iam/project) role is added to the
service account. Alternatively, the account can be granted all of the following roles:
- **Editor**
- **Logs Configuration Writer**
- **PubSub Admin**
Once you create a project, set the following environment variables to be able to
run the against the actual APIs.
- **GCLOUD_TESTS_GOLANG_PROJECT_ID**: Developers Console project's ID (e.g. bamboo-shift-455)
- **GCLOUD_TESTS_GOLANG_KEY**: The path to the JSON key file.
Some packages require additional environment variables to be set:
- firestore
- **GCLOUD_TESTS_GOLANG_FIRESTORE_PROJECT_ID**: project ID for Firestore.
- **GCLOUD_TESTS_GOLANG_FIRESTORE_KEY**: The path to the JSON key file.
- storage
- **GCLOUD_TESTS_GOLANG_KEYRING**: The full name of the keyring for the tests, in the
form "projects/P/locations/L/keyRings/R".
- translate
- **GCLOUD_TESTS_API_KEY**: API key for using the Translate API.
- profiler
- **GCLOUD_TESTS_GOLANG_ZONE**: Compute Engine zone.
Some packages can record the RPCs during integration tests to a file for
subsequent replay. To record, pass the `-record` flag to `go test`. The
recording will be saved to the _package_`.replay` file. To replay integration
tests from a saved recording, the replay file must be present, the `-short` flag
must be passed to `go test`, and the **GCLOUD_TESTS_GOLANG_ENABLE_REPLAY**
environment variable must have a non-empty value.
Install the [gcloud command-line tool][gcloudcli] to your machine and use it
to create some resources used in integration tests.
From the project's root directory:
``` sh
# Set the default project in your env.
$ gcloud config set project $GCLOUD_TESTS_GOLANG_PROJECT_ID
# Authenticate the gcloud tool with your account.
$ gcloud auth login
# Create the indexes used in the datastore integration tests.
$ gcloud preview datastore create-indexes datastore/testdata/index.yaml
# Create a Google Cloud storage bucket with the same name as your test project,
# and with the Stackdriver Logging service account as owner, for the sink
# integration tests in logging.
$ gsutil mb gs://$GCLOUD_TESTS_GOLANG_PROJECT_ID
$ gsutil acl ch -g cloud-logs@google.com:O gs://$GCLOUD_TESTS_GOLANG_PROJECT_ID
# Create a PubSub topic for integration tests of storage notifications.
$ gcloud beta pubsub topics create go-storage-notification-test
# Create a Spanner instance for the spanner integration tests.
$ gcloud beta spanner instances create go-integration-test --config regional-us-central1 --nodes 1 --description 'Instance for go client test'
# NOTE: Spanner instances are priced by the node-hour, so you may want to delete
# the instance after testing with 'gcloud beta spanner instances delete'.
# For Storage integration tests:
# Enable KMS for your project in the Cloud Console.
# Create a KMS keyring, in the same location as the default location for your project's buckets.
$ gcloud kms keyrings create MY_KEYRING --location MY_LOCATION
# Create two keys in the keyring, named key1 and key2.
$ gcloud kms keys create key1 --keyring MY_KEYRING --location MY_LOCATION --purpose encryption
$ gcloud kms keys create key2 --keyring MY_KEYRING --location MY_LOCATION --purpose encryption
# As mentioned above, set the GCLOUD_TESTS_GOLANG_KEYRING environment variable.
$ export GCLOUD_TESTS_GOLANG_KEYRING=projects/$GCLOUD_TESTS_GOLANG_PROJECT_ID/locations/MY_LOCATION/keyRings/MY_KEYRING
# Authorize Google Cloud Storage to encrypt and decrypt using key1.
gsutil kms authorize -p $GCLOUD_TESTS_GOLANG_PROJECT_ID -k $GCLOUD_TESTS_GOLANG_KEYRING/cryptoKeys/key1
```
Once you've done the necessary setup, you can run the integration tests by running:
``` sh
$ go test -v cloud.google.com/go/...
```
## Contributor License Agreements
Before we can accept your pull requests you'll need to sign a Contributor
License Agreement (CLA):
- **If you are an individual writing original source code** and **you own the
intellectual property**, then you'll need to sign an [individual CLA][indvcla].
- **If you work for a company that wants to allow you to contribute your
work**, then you'll need to sign a [corporate CLA][corpcla].
You can sign these electronically (just scroll to the bottom). After that,
we'll be able to accept your pull requests.
## Contributor Code of Conduct
As contributors and maintainers of this project,
and in the interest of fostering an open and welcoming community,
we pledge to respect all people who contribute through reporting issues,
posting feature requests, updating documentation,
submitting pull requests or patches, and other activities.
We are committed to making participation in this project
a harassment-free experience for everyone,
regardless of level of experience, gender, gender identity and expression,
sexual orientation, disability, personal appearance,
body size, race, ethnicity, age, religion, or nationality.
Examples of unacceptable behavior by participants include:
* The use of sexualized language or imagery
* Personal attacks
* Trolling or insulting/derogatory comments
* Public or private harassment
* Publishing other's private information,
such as physical or electronic
addresses, without explicit permission
* Other unethical or unprofessional conduct.
Project maintainers have the right and responsibility to remove, edit, or reject
comments, commits, code, wiki edits, issues, and other contributions
that are not aligned to this Code of Conduct.
By adopting this Code of Conduct,
project maintainers commit themselves to fairly and consistently
applying these principles to every aspect of managing this project.
Project maintainers who do not follow or enforce the Code of Conduct
may be permanently removed from the project team.
This code of conduct applies both within project spaces and in public spaces
when an individual is representing the project or its community.
Instances of abusive, harassing, or otherwise unacceptable behavior
may be reported by opening an issue
or contacting one or more of the project maintainers.
This Code of Conduct is adapted from the [Contributor Covenant](http://contributor-covenant.org), version 1.2.0,
available at [http://contributor-covenant.org/version/1/2/0/](http://contributor-covenant.org/version/1/2/0/)
[gcloudcli]: https://developers.google.com/cloud/sdk/gcloud/
[indvcla]: https://developers.google.com/open-source/cla/individual
[corpcla]: https://developers.google.com/open-source/cla/corporate

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# People who have agreed to one of the CLAs and can contribute patches.
# The AUTHORS file lists the copyright holders; this file
# lists people. For example, Google employees are listed here
# but not in AUTHORS, because Google holds the copyright.
#
# https://developers.google.com/open-source/cla/individual
# https://developers.google.com/open-source/cla/corporate
#
# Names should be added to this file as:
# Name <email address>
# Keep the list alphabetically sorted.
Alexis Hunt <lexer@google.com>
Andreas Litt <andreas.litt@gmail.com>
Andrew Gerrand <adg@golang.org>
Brad Fitzpatrick <bradfitz@golang.org>
Burcu Dogan <jbd@google.com>
Dave Day <djd@golang.org>
David Sansome <me@davidsansome.com>
David Symonds <dsymonds@golang.org>
Filippo Valsorda <hi@filippo.io>
Glenn Lewis <gmlewis@google.com>
Ingo Oeser <nightlyone@googlemail.com>
James Hall <james.hall@shopify.com>
Johan Euphrosine <proppy@google.com>
Jonathan Amsterdam <jba@google.com>
Kunpei Sakai <namusyaka@gmail.com>
Luna Duclos <luna.duclos@palmstonegames.com>
Magnus Hiie <magnus.hiie@gmail.com>
Mario Castro <mariocaster@gmail.com>
Michael McGreevy <mcgreevy@golang.org>
Omar Jarjur <ojarjur@google.com>
Paweł Knap <pawelknap88@gmail.com>
Péter Szilágyi <peterke@gmail.com>
Sarah Adams <shadams@google.com>
Thanatat Tamtan <acoshift@gmail.com>
Toby Burress <kurin@google.com>
Tuo Shan <shantuo@google.com>
Tyler Treat <ttreat31@gmail.com>

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PARTICULAR PURPOSE. You are solely responsible for determining the
appropriateness of using or redistributing the Work and assume any
risks associated with Your exercise of permissions under this License.
8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
incidental, or consequential damages of any character arising as a
result of this License or out of the use or inability to use the
Work (including but not limited to damages for loss of goodwill,
work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses), even if such Contributor
has been advised of the possibility of such damages.
9. Accepting Warranty or Additional Liability. While redistributing
the Work or Derivative Works thereof, You may choose to offer,
and charge a fee for, acceptance of support, warranty, indemnity,
or other liability obligations and/or rights consistent with this
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on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.
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503
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# Google Cloud Client Libraries for Go
[![GoDoc](https://godoc.org/cloud.google.com/go?status.svg)](https://godoc.org/cloud.google.com/go)
Go packages for [Google Cloud Platform](https://cloud.google.com) services.
``` go
import "cloud.google.com/go"
```
To install the packages on your system, *do not clone the repo*. Instead use
```
$ go get -u cloud.google.com/go/...
```
**NOTE:** Some of these packages are under development, and may occasionally
make backwards-incompatible changes.
**NOTE:** Github repo is a mirror of [https://code.googlesource.com/gocloud](https://code.googlesource.com/gocloud).
* [News](#news)
* [Supported APIs](#supported-apis)
* [Go Versions Supported](#go-versions-supported)
* [Authorization](#authorization)
* [Cloud Datastore](#cloud-datastore-)
* [Cloud Storage](#cloud-storage-)
* [Cloud Pub/Sub](#cloud-pub-sub-)
* [BigQuery](#cloud-bigquery-)
* [Stackdriver Logging](#stackdriver-logging-)
* [Cloud Spanner](#cloud-spanner-)
## News
_7 August 2018_
As of November 1, the code in the repo will no longer support Go versions 1.8
and earlier. No one other than AppEngine users should be on those old versions,
and AppEngine
[Standard](https://groups.google.com/forum/#!topic/google-appengine-go/e7oPNomd7ak)
and
[Flex](https://groups.google.com/forum/#!topic/google-appengine-go/wHsYtxvEbXI)
will stop supporting new deployments with those versions on that date.
Changes have been moved to [CHANGES](https://github.com/GoogleCloudPlatform/google-cloud-go/blob/master/CHANGES.md).
## Supported APIs
Google API | Status | Package
---------------------------------------------|--------------|-----------------------------------------------------------
[Asset][cloud-asset] | alpha | [`godoc.org/cloud.google.com/go/asset/v1beta`][cloud-asset-ref]
[BigQuery][cloud-bigquery] | stable | [`godoc.org/cloud.google.com/go/bigquery`][cloud-bigquery-ref]
[Bigtable][cloud-bigtable] | stable | [`godoc.org/cloud.google.com/go/bigtable`][cloud-bigtable-ref]
[Container][cloud-container] | stable | [`godoc.org/cloud.google.com/go/container/apiv1`][cloud-container-ref]
[ContainerAnalysis][cloud-containeranalysis] | beta | [`godoc.org/cloud.google.com/go/containeranalysis/apiv1beta1`][cloud-containeranalysis-ref]
[Dataproc][cloud-dataproc] | stable | [`godoc.org/cloud.google.com/go/dataproc/apiv1`][cloud-dataproc-ref]
[Datastore][cloud-datastore] | stable | [`godoc.org/cloud.google.com/go/datastore`][cloud-datastore-ref]
[Debugger][cloud-debugger] | alpha | [`godoc.org/cloud.google.com/go/debugger/apiv2`][cloud-debugger-ref]
[Dialogflow][cloud-dialogflow] | alpha | [`godoc.org/cloud.google.com/go/dialogflow/apiv2`][cloud-dialogflow-ref]
[Data Loss Prevention][cloud-dlp] | alpha | [`godoc.org/cloud.google.com/go/dlp/apiv2`][cloud-dlp-ref]
[ErrorReporting][cloud-errors] | alpha | [`godoc.org/cloud.google.com/go/errorreporting`][cloud-errors-ref]
[Firestore][cloud-firestore] | beta | [`godoc.org/cloud.google.com/go/firestore`][cloud-firestore-ref]
[IAM][cloud-iam] | stable | [`godoc.org/cloud.google.com/go/iam`][cloud-iam-ref]
[KMS][cloud-kms] | stable | [`godoc.org/cloud.google.com/go/kms`][cloud-kms-ref]
[Natural Language][cloud-natural-language] | stable | [`godoc.org/cloud.google.com/go/language/apiv1`][cloud-natural-language-ref]
[Logging][cloud-logging] | stable | [`godoc.org/cloud.google.com/go/logging`][cloud-logging-ref]
[Monitoring][cloud-monitoring] | alpha | [`godoc.org/cloud.google.com/go/monitoring/apiv3`][cloud-monitoring-ref]
[OS Login][cloud-oslogin] | alpha | [`cloud.google.com/compute/docs/oslogin/rest`][cloud-oslogin-ref]
[Pub/Sub][cloud-pubsub] | stable | [`godoc.org/cloud.google.com/go/pubsub`][cloud-pubsub-ref]
[Memorystore][cloud-memorystore] | stable | [`godoc.org/cloud.google.com/go/redis/apiv1beta1`][cloud-memorystore-ref]
[Spanner][cloud-spanner] | stable | [`godoc.org/cloud.google.com/go/spanner`][cloud-spanner-ref]
[Speech][cloud-speech] | stable | [`godoc.org/cloud.google.com/go/speech/apiv1`][cloud-speech-ref]
[Storage][cloud-storage] | stable | [`godoc.org/cloud.google.com/go/storage`][cloud-storage-ref]
[Text To Speech][cloud-texttospeech] | alpha | [`godoc.org/cloud.google.com/go/texttospeech/apiv1`][cloud-storage-ref]
[Trace][cloud-trace] | alpha | [`godoc.org/cloud.google.com/go/trace/apiv2`][cloud-translation-ref]
[Translation][cloud-translation] | stable | [`godoc.org/cloud.google.com/go/translate`][cloud-translation-ref]
[Video Intelligence][cloud-video] | alpha | [`godoc.org/cloud.google.com/go/videointelligence/apiv1beta1`][cloud-video-ref]
[Vision][cloud-vision] | stable | [`godoc.org/cloud.google.com/go/vision/apiv1`][cloud-vision-ref]
> **Alpha status**: the API is still being actively developed. As a
> result, it might change in backward-incompatible ways and is not recommended
> for production use.
>
> **Beta status**: the API is largely complete, but still has outstanding
> features and bugs to be addressed. There may be minor backwards-incompatible
> changes where necessary.
>
> **Stable status**: the API is mature and ready for production use. We will
> continue addressing bugs and feature requests.
Documentation and examples are available at
https://godoc.org/cloud.google.com/go
Visit or join the
[google-api-go-announce group](https://groups.google.com/forum/#!forum/google-api-go-announce)
for updates on these packages.
## Go Versions Supported
We support the two most recent major versions of Go. If Google App Engine uses
an older version, we support that as well. You can see which versions are
currently supported by looking at the lines following `go:` in
[`.travis.yml`](.travis.yml).
## Authorization
By default, each API will use [Google Application Default Credentials][default-creds]
for authorization credentials used in calling the API endpoints. This will allow your
application to run in many environments without requiring explicit configuration.
[snip]:# (auth)
```go
client, err := storage.NewClient(ctx)
```
To authorize using a
[JSON key file](https://cloud.google.com/iam/docs/managing-service-account-keys),
pass
[`option.WithCredentialsFile`](https://godoc.org/google.golang.org/api/option#WithCredentialsFile)
to the `NewClient` function of the desired package. For example:
[snip]:# (auth-JSON)
```go
client, err := storage.NewClient(ctx, option.WithCredentialsFile("path/to/keyfile.json"))
```
You can exert more control over authorization by using the
[`golang.org/x/oauth2`](https://godoc.org/golang.org/x/oauth2) package to
create an `oauth2.TokenSource`. Then pass
[`option.WithTokenSource`](https://godoc.org/google.golang.org/api/option#WithTokenSource)
to the `NewClient` function:
[snip]:# (auth-ts)
```go
tokenSource := ...
client, err := storage.NewClient(ctx, option.WithTokenSource(tokenSource))
```
## Cloud Datastore [![GoDoc](https://godoc.org/cloud.google.com/go/datastore?status.svg)](https://godoc.org/cloud.google.com/go/datastore)
- [About Cloud Datastore][cloud-datastore]
- [Activating the API for your project][cloud-datastore-activation]
- [API documentation][cloud-datastore-docs]
- [Go client documentation](https://godoc.org/cloud.google.com/go/datastore)
- [Complete sample program](https://github.com/GoogleCloudPlatform/golang-samples/tree/master/datastore/tasks)
### Example Usage
First create a `datastore.Client` to use throughout your application:
[snip]:# (datastore-1)
```go
client, err := datastore.NewClient(ctx, "my-project-id")
if err != nil {
log.Fatal(err)
}
```
Then use that client to interact with the API:
[snip]:# (datastore-2)
```go
type Post struct {
Title string
Body string `datastore:",noindex"`
PublishedAt time.Time
}
keys := []*datastore.Key{
datastore.NameKey("Post", "post1", nil),
datastore.NameKey("Post", "post2", nil),
}
posts := []*Post{
{Title: "Post 1", Body: "...", PublishedAt: time.Now()},
{Title: "Post 2", Body: "...", PublishedAt: time.Now()},
}
if _, err := client.PutMulti(ctx, keys, posts); err != nil {
log.Fatal(err)
}
```
## Cloud Storage [![GoDoc](https://godoc.org/cloud.google.com/go/storage?status.svg)](https://godoc.org/cloud.google.com/go/storage)
- [About Cloud Storage][cloud-storage]
- [API documentation][cloud-storage-docs]
- [Go client documentation](https://godoc.org/cloud.google.com/go/storage)
- [Complete sample programs](https://github.com/GoogleCloudPlatform/golang-samples/tree/master/storage)
### Example Usage
First create a `storage.Client` to use throughout your application:
[snip]:# (storage-1)
```go
client, err := storage.NewClient(ctx)
if err != nil {
log.Fatal(err)
}
```
[snip]:# (storage-2)
```go
// Read the object1 from bucket.
rc, err := client.Bucket("bucket").Object("object1").NewReader(ctx)
if err != nil {
log.Fatal(err)
}
defer rc.Close()
body, err := ioutil.ReadAll(rc)
if err != nil {
log.Fatal(err)
}
```
## Cloud Pub/Sub [![GoDoc](https://godoc.org/cloud.google.com/go/pubsub?status.svg)](https://godoc.org/cloud.google.com/go/pubsub)
- [About Cloud Pubsub][cloud-pubsub]
- [API documentation][cloud-pubsub-docs]
- [Go client documentation](https://godoc.org/cloud.google.com/go/pubsub)
- [Complete sample programs](https://github.com/GoogleCloudPlatform/golang-samples/tree/master/pubsub)
### Example Usage
First create a `pubsub.Client` to use throughout your application:
[snip]:# (pubsub-1)
```go
client, err := pubsub.NewClient(ctx, "project-id")
if err != nil {
log.Fatal(err)
}
```
Then use the client to publish and subscribe:
[snip]:# (pubsub-2)
```go
// Publish "hello world" on topic1.
topic := client.Topic("topic1")
res := topic.Publish(ctx, &pubsub.Message{
Data: []byte("hello world"),
})
// The publish happens asynchronously.
// Later, you can get the result from res:
...
msgID, err := res.Get(ctx)
if err != nil {
log.Fatal(err)
}
// Use a callback to receive messages via subscription1.
sub := client.Subscription("subscription1")
err = sub.Receive(ctx, func(ctx context.Context, m *pubsub.Message) {
fmt.Println(m.Data)
m.Ack() // Acknowledge that we've consumed the message.
})
if err != nil {
log.Println(err)
}
```
## BigQuery [![GoDoc](https://godoc.org/cloud.google.com/go/bigquery?status.svg)](https://godoc.org/cloud.google.com/go/bigquery)
- [About BigQuery][cloud-bigquery]
- [API documentation][cloud-bigquery-docs]
- [Go client documentation][cloud-bigquery-ref]
- [Complete sample programs](https://github.com/GoogleCloudPlatform/golang-samples/tree/master/bigquery)
### Example Usage
First create a `bigquery.Client` to use throughout your application:
[snip]:# (bq-1)
```go
c, err := bigquery.NewClient(ctx, "my-project-ID")
if err != nil {
// TODO: Handle error.
}
```
Then use that client to interact with the API:
[snip]:# (bq-2)
```go
// Construct a query.
q := c.Query(`
SELECT year, SUM(number)
FROM [bigquery-public-data:usa_names.usa_1910_2013]
WHERE name = "William"
GROUP BY year
ORDER BY year
`)
// Execute the query.
it, err := q.Read(ctx)
if err != nil {
// TODO: Handle error.
}
// Iterate through the results.
for {
var values []bigquery.Value
err := it.Next(&values)
if err == iterator.Done {
break
}
if err != nil {
// TODO: Handle error.
}
fmt.Println(values)
}
```
## Stackdriver Logging [![GoDoc](https://godoc.org/cloud.google.com/go/logging?status.svg)](https://godoc.org/cloud.google.com/go/logging)
- [About Stackdriver Logging][cloud-logging]
- [API documentation][cloud-logging-docs]
- [Go client documentation][cloud-logging-ref]
- [Complete sample programs](https://github.com/GoogleCloudPlatform/golang-samples/tree/master/logging)
### Example Usage
First create a `logging.Client` to use throughout your application:
[snip]:# (logging-1)
```go
ctx := context.Background()
client, err := logging.NewClient(ctx, "my-project")
if err != nil {
// TODO: Handle error.
}
```
Usually, you'll want to add log entries to a buffer to be periodically flushed
(automatically and asynchronously) to the Stackdriver Logging service.
[snip]:# (logging-2)
```go
logger := client.Logger("my-log")
logger.Log(logging.Entry{Payload: "something happened!"})
```
Close your client before your program exits, to flush any buffered log entries.
[snip]:# (logging-3)
```go
err = client.Close()
if err != nil {
// TODO: Handle error.
}
```
## Cloud Spanner [![GoDoc](https://godoc.org/cloud.google.com/go/spanner?status.svg)](https://godoc.org/cloud.google.com/go/spanner)
- [About Cloud Spanner][cloud-spanner]
- [API documentation][cloud-spanner-docs]
- [Go client documentation](https://godoc.org/cloud.google.com/go/spanner)
### Example Usage
First create a `spanner.Client` to use throughout your application:
[snip]:# (spanner-1)
```go
client, err := spanner.NewClient(ctx, "projects/P/instances/I/databases/D")
if err != nil {
log.Fatal(err)
}
```
[snip]:# (spanner-2)
```go
// Simple Reads And Writes
_, err = client.Apply(ctx, []*spanner.Mutation{
spanner.Insert("Users",
[]string{"name", "email"},
[]interface{}{"alice", "a@example.com"})})
if err != nil {
log.Fatal(err)
}
row, err := client.Single().ReadRow(ctx, "Users",
spanner.Key{"alice"}, []string{"email"})
if err != nil {
log.Fatal(err)
}
```
## Contributing
Contributions are welcome. Please, see the
[CONTRIBUTING](https://github.com/GoogleCloudPlatform/google-cloud-go/blob/master/CONTRIBUTING.md)
document for details. We're using Gerrit for our code reviews. Please don't open pull
requests against this repo, new pull requests will be automatically closed.
Please note that this project is released with a Contributor Code of Conduct.
By participating in this project you agree to abide by its terms.
See [Contributor Code of Conduct](https://github.com/GoogleCloudPlatform/google-cloud-go/blob/master/CONTRIBUTING.md#contributor-code-of-conduct)
for more information.
[cloud-datastore]: https://cloud.google.com/datastore/
[cloud-datastore-ref]: https://godoc.org/cloud.google.com/go/datastore
[cloud-datastore-docs]: https://cloud.google.com/datastore/docs
[cloud-datastore-activation]: https://cloud.google.com/datastore/docs/activate
[cloud-firestore]: https://cloud.google.com/firestore/
[cloud-firestore-ref]: https://godoc.org/cloud.google.com/go/firestore
[cloud-firestore-docs]: https://cloud.google.com/firestore/docs
[cloud-firestore-activation]: https://cloud.google.com/firestore/docs/activate
[cloud-pubsub]: https://cloud.google.com/pubsub/
[cloud-pubsub-ref]: https://godoc.org/cloud.google.com/go/pubsub
[cloud-pubsub-docs]: https://cloud.google.com/pubsub/docs
[cloud-storage]: https://cloud.google.com/storage/
[cloud-storage-ref]: https://godoc.org/cloud.google.com/go/storage
[cloud-storage-docs]: https://cloud.google.com/storage/docs
[cloud-storage-create-bucket]: https://cloud.google.com/storage/docs/cloud-console#_creatingbuckets
[cloud-bigtable]: https://cloud.google.com/bigtable/
[cloud-bigtable-ref]: https://godoc.org/cloud.google.com/go/bigtable
[cloud-bigquery]: https://cloud.google.com/bigquery/
[cloud-bigquery-docs]: https://cloud.google.com/bigquery/docs
[cloud-bigquery-ref]: https://godoc.org/cloud.google.com/go/bigquery
[cloud-logging]: https://cloud.google.com/logging/
[cloud-logging-docs]: https://cloud.google.com/logging/docs
[cloud-logging-ref]: https://godoc.org/cloud.google.com/go/logging
[cloud-monitoring]: https://cloud.google.com/monitoring/
[cloud-monitoring-ref]: https://godoc.org/cloud.google.com/go/monitoring/apiv3
[cloud-vision]: https://cloud.google.com/vision
[cloud-vision-ref]: https://godoc.org/cloud.google.com/go/vision/apiv1
[cloud-language]: https://cloud.google.com/natural-language
[cloud-language-ref]: https://godoc.org/cloud.google.com/go/language/apiv1
[cloud-oslogin]: https://cloud.google.com/compute/docs/oslogin/rest
[cloud-oslogin-ref]: https://cloud.google.com/compute/docs/oslogin/rest
[cloud-speech]: https://cloud.google.com/speech
[cloud-speech-ref]: https://godoc.org/cloud.google.com/go/speech/apiv1
[cloud-spanner]: https://cloud.google.com/spanner/
[cloud-spanner-ref]: https://godoc.org/cloud.google.com/go/spanner
[cloud-spanner-docs]: https://cloud.google.com/spanner/docs
[cloud-translation]: https://cloud.google.com/translation
[cloud-translation-ref]: https://godoc.org/cloud.google.com/go/translation
[cloud-video]: https://cloud.google.com/video-intelligence/
[cloud-video-ref]: https://godoc.org/cloud.google.com/go/videointelligence/apiv1beta1
[cloud-errors]: https://cloud.google.com/error-reporting/
[cloud-errors-ref]: https://godoc.org/cloud.google.com/go/errorreporting
[cloud-container]: https://cloud.google.com/containers/
[cloud-container-ref]: https://godoc.org/cloud.google.com/go/container/apiv1
[cloud-debugger]: https://cloud.google.com/debugger/
[cloud-debugger-ref]: https://godoc.org/cloud.google.com/go/debugger/apiv2
[cloud-dlp]: https://cloud.google.com/dlp/
[cloud-dlp-ref]: https://godoc.org/cloud.google.com/go/dlp/apiv2beta1
[default-creds]: https://developers.google.com/identity/protocols/application-default-credentials
[cloud-dataproc]: https://cloud.google.com/dataproc/
[cloud-dataproc-docs]: https://cloud.google.com/dataproc/docs
[cloud-dataproc-ref]: https://godoc.org/cloud.google.com/go/dataproc/apiv1
[cloud-iam]: https://cloud.google.com/iam/
[cloud-iam-docs]: https://cloud.google.com/iam/docs
[cloud-iam-ref]: https://godoc.org/cloud.google.com/go/iam
[cloud-kms]: https://cloud.google.com/kms/
[cloud-kms-docs]: https://cloud.google.com/kms/docs
[cloud-kms-ref]: https://godoc.org/cloud.google.com/go/kms/apiv1
[cloud-natural-language]: https://cloud.google.com/natural-language/
[cloud-natural-language-docs]: https://cloud.google.com/natural-language/docs
[cloud-natural-language-ref]: https://godoc.org/cloud.google.com/go/language/apiv1
[cloud-memorystore]: https://cloud.google.com/memorystore/
[cloud-memorystore-docs]: https://cloud.google.com/memorystore/docs
[cloud-memorystore-ref]: https://godoc.org/cloud.google.com/go/redis/apiv1beta1
[cloud-texttospeech]: https://cloud.google.com/texttospeech/
[cloud-texttospeech-docs]: https://cloud.google.com/texttospeech/docs
[cloud-texttospeech-ref]: https://godoc.org/cloud.google.com/go/texttospeech/apiv1
[cloud-trace]: https://cloud.google.com/trace/
[cloud-trace-docs]: https://cloud.google.com/trace/docs
[cloud-trace-ref]: https://godoc.org/cloud.google.com/go/trace/apiv1
[cloud-dialogflow]: https://cloud.google.com/dialogflow-enterprise/
[cloud-dialogflow-docs]: https://cloud.google.com/dialogflow-enterprise/docs/
[cloud-dialogflow-ref]: https://godoc.org/cloud.google.com/go/dialogflow/apiv2
[cloud-containeranalysis]: https://cloud.google.com/container-registry/docs/container-analysis
[cloud-containeranalysis-docs]: https://cloud.google.com/container-analysis/api/reference/rest/
[cloud-containeranalysis-ref]: https://godoc.org/cloud.google.com/go/devtools/containeranalysis/apiv1beta1
[cloud-asset]: https://cloud.google.com/security-command-center/docs/how-to-asset-inventory
[cloud-asset-docs]: https://cloud.google.com/security-command-center/docs/how-to-asset-inventory
[cloud-asset-ref]: https://godoc.org/cloud.google.com/go/asset/apiv1

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# How to Release this Repo
1. Determine the current release version with `git tag -l`. It should look
something like `vX.Y.Z`. We'll call the current
version `$CV` and the new version `$NV`.
1. On master, run `git log $CV..` to list all the changes since the last
release.
1. Edit `CHANGES.md` to include a summary of the changes.
1. Mail the CL containing the `CHANGES.md` changes. When the CL is approved, submit it.
1. Without submitting any other CLs:
a. Switch to master.
b. Tag the repo with the next version: `git tag $NV`.
c. Push the tag: `git push origin $NV`.

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// Copyright 2014 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
/*
Package cloud is the root of the packages used to access Google Cloud
Services. See https://godoc.org/cloud.google.com/go for a full list
of sub-packages.
Client Options
All clients in sub-packages are configurable via client options. These options are
described here: https://godoc.org/google.golang.org/api/option.
Authentication and Authorization
All the clients in sub-packages support authentication via Google Application Default
Credentials (see https://cloud.google.com/docs/authentication/production), or
by providing a JSON key file for a Service Account. See the authentication examples
in this package for details.
Timeouts and Cancellation
By default, all requests in sub-packages will run indefinitely, retrying on transient
errors when correctness allows. To set timeouts or arrange for cancellation, use
contexts. See the examples for details.
Do not attempt to control the initial connection (dialing) of a service by setting a
timeout on the context passed to NewClient. Dialing is non-blocking, so timeouts
would be ineffective and would only interfere with credential refreshing, which uses
the same context.
Connection Pooling
Connection pooling differs in clients based on their transport. Cloud
clients either rely on HTTP or gRPC transports to communicate
with Google Cloud.
Cloud clients that use HTTP (bigquery, compute, storage, and translate) rely on the
underlying HTTP transport to cache connections for later re-use. These are cached to
the default http.MaxIdleConns and http.MaxIdleConnsPerHost settings in
http.DefaultTransport.
For gRPC clients (all others in this repo), connection pooling is configurable. Users
of cloud client libraries may specify option.WithGRPCConnectionPool(n) as a client
option to NewClient calls. This configures the underlying gRPC connections to be
pooled and addressed in a round robin fashion.
Using the Libraries with Docker
Minimal docker images like Alpine lack CA certificates. This causes RPCs to appear to
hang, because gRPC retries indefinitely. See https://github.com/GoogleCloudPlatform/google-cloud-go/issues/928
for more information.
Debugging
To see gRPC logs, set the environment variable GRPC_GO_LOG_SEVERITY_LEVEL. See
https://godoc.org/google.golang.org/grpc/grpclog for more information.
For HTTP logging, set the GODEBUG environment variable to "http2debug=1" or "http2debug=2".
*/
package cloud // import "cloud.google.com/go"

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// Copyright 2014 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package metadata provides access to Google Compute Engine (GCE)
// metadata and API service accounts.
//
// This package is a wrapper around the GCE metadata service,
// as documented at https://developers.google.com/compute/docs/metadata.
package metadata // import "cloud.google.com/go/compute/metadata"
import (
"encoding/json"
"fmt"
"io/ioutil"
"net"
"net/http"
"net/url"
"os"
"runtime"
"strings"
"sync"
"time"
"golang.org/x/net/context"
"golang.org/x/net/context/ctxhttp"
)
const (
// metadataIP is the documented metadata server IP address.
metadataIP = "169.254.169.254"
// metadataHostEnv is the environment variable specifying the
// GCE metadata hostname. If empty, the default value of
// metadataIP ("169.254.169.254") is used instead.
// This is variable name is not defined by any spec, as far as
// I know; it was made up for the Go package.
metadataHostEnv = "GCE_METADATA_HOST"
userAgent = "gcloud-golang/0.1"
)
type cachedValue struct {
k string
trim bool
mu sync.Mutex
v string
}
var (
projID = &cachedValue{k: "project/project-id", trim: true}
projNum = &cachedValue{k: "project/numeric-project-id", trim: true}
instID = &cachedValue{k: "instance/id", trim: true}
)
var (
defaultClient = &Client{hc: &http.Client{
Transport: &http.Transport{
Dial: (&net.Dialer{
Timeout: 2 * time.Second,
KeepAlive: 30 * time.Second,
}).Dial,
ResponseHeaderTimeout: 2 * time.Second,
},
}}
subscribeClient = &Client{hc: &http.Client{
Transport: &http.Transport{
Dial: (&net.Dialer{
Timeout: 2 * time.Second,
KeepAlive: 30 * time.Second,
}).Dial,
},
}}
)
// NotDefinedError is returned when requested metadata is not defined.
//
// The underlying string is the suffix after "/computeMetadata/v1/".
//
// This error is not returned if the value is defined to be the empty
// string.
type NotDefinedError string
func (suffix NotDefinedError) Error() string {
return fmt.Sprintf("metadata: GCE metadata %q not defined", string(suffix))
}
func (c *cachedValue) get(cl *Client) (v string, err error) {
defer c.mu.Unlock()
c.mu.Lock()
if c.v != "" {
return c.v, nil
}
if c.trim {
v, err = cl.getTrimmed(c.k)
} else {
v, err = cl.Get(c.k)
}
if err == nil {
c.v = v
}
return
}
var (
onGCEOnce sync.Once
onGCE bool
)
// OnGCE reports whether this process is running on Google Compute Engine.
func OnGCE() bool {
onGCEOnce.Do(initOnGCE)
return onGCE
}
func initOnGCE() {
onGCE = testOnGCE()
}
func testOnGCE() bool {
// The user explicitly said they're on GCE, so trust them.
if os.Getenv(metadataHostEnv) != "" {
return true
}
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
resc := make(chan bool, 2)
// Try two strategies in parallel.
// See https://github.com/GoogleCloudPlatform/google-cloud-go/issues/194
go func() {
req, _ := http.NewRequest("GET", "http://"+metadataIP, nil)
req.Header.Set("User-Agent", userAgent)
res, err := ctxhttp.Do(ctx, defaultClient.hc, req)
if err != nil {
resc <- false
return
}
defer res.Body.Close()
resc <- res.Header.Get("Metadata-Flavor") == "Google"
}()
go func() {
addrs, err := net.LookupHost("metadata.google.internal")
if err != nil || len(addrs) == 0 {
resc <- false
return
}
resc <- strsContains(addrs, metadataIP)
}()
tryHarder := systemInfoSuggestsGCE()
if tryHarder {
res := <-resc
if res {
// The first strategy succeeded, so let's use it.
return true
}
// Wait for either the DNS or metadata server probe to
// contradict the other one and say we are running on
// GCE. Give it a lot of time to do so, since the system
// info already suggests we're running on a GCE BIOS.
timer := time.NewTimer(5 * time.Second)
defer timer.Stop()
select {
case res = <-resc:
return res
case <-timer.C:
// Too slow. Who knows what this system is.
return false
}
}
// There's no hint from the system info that we're running on
// GCE, so use the first probe's result as truth, whether it's
// true or false. The goal here is to optimize for speed for
// users who are NOT running on GCE. We can't assume that
// either a DNS lookup or an HTTP request to a blackholed IP
// address is fast. Worst case this should return when the
// metaClient's Transport.ResponseHeaderTimeout or
// Transport.Dial.Timeout fires (in two seconds).
return <-resc
}
// systemInfoSuggestsGCE reports whether the local system (without
// doing network requests) suggests that we're running on GCE. If this
// returns true, testOnGCE tries a bit harder to reach its metadata
// server.
func systemInfoSuggestsGCE() bool {
if runtime.GOOS != "linux" {
// We don't have any non-Linux clues available, at least yet.
return false
}
slurp, _ := ioutil.ReadFile("/sys/class/dmi/id/product_name")
name := strings.TrimSpace(string(slurp))
return name == "Google" || name == "Google Compute Engine"
}
// Subscribe calls Client.Subscribe on a client designed for subscribing (one with no
// ResponseHeaderTimeout).
func Subscribe(suffix string, fn func(v string, ok bool) error) error {
return subscribeClient.Subscribe(suffix, fn)
}
// Get calls Client.Get on the default client.
func Get(suffix string) (string, error) { return defaultClient.Get(suffix) }
// ProjectID returns the current instance's project ID string.
func ProjectID() (string, error) { return defaultClient.ProjectID() }
// NumericProjectID returns the current instance's numeric project ID.
func NumericProjectID() (string, error) { return defaultClient.NumericProjectID() }
// InternalIP returns the instance's primary internal IP address.
func InternalIP() (string, error) { return defaultClient.InternalIP() }
// ExternalIP returns the instance's primary external (public) IP address.
func ExternalIP() (string, error) { return defaultClient.ExternalIP() }
// Hostname returns the instance's hostname. This will be of the form
// "<instanceID>.c.<projID>.internal".
func Hostname() (string, error) { return defaultClient.Hostname() }
// InstanceTags returns the list of user-defined instance tags,
// assigned when initially creating a GCE instance.
func InstanceTags() ([]string, error) { return defaultClient.InstanceTags() }
// InstanceID returns the current VM's numeric instance ID.
func InstanceID() (string, error) { return defaultClient.InstanceID() }
// InstanceName returns the current VM's instance ID string.
func InstanceName() (string, error) { return defaultClient.InstanceName() }
// Zone returns the current VM's zone, such as "us-central1-b".
func Zone() (string, error) { return defaultClient.Zone() }
// InstanceAttributes calls Client.InstanceAttributes on the default client.
func InstanceAttributes() ([]string, error) { return defaultClient.InstanceAttributes() }
// ProjectAttributes calls Client.ProjectAttributes on the default client.
func ProjectAttributes() ([]string, error) { return defaultClient.ProjectAttributes() }
// InstanceAttributeValue calls Client.InstanceAttributeValue on the default client.
func InstanceAttributeValue(attr string) (string, error) {
return defaultClient.InstanceAttributeValue(attr)
}
// ProjectAttributeValue calls Client.ProjectAttributeValue on the default client.
func ProjectAttributeValue(attr string) (string, error) {
return defaultClient.ProjectAttributeValue(attr)
}
// Scopes calls Client.Scopes on the default client.
func Scopes(serviceAccount string) ([]string, error) { return defaultClient.Scopes(serviceAccount) }
func strsContains(ss []string, s string) bool {
for _, v := range ss {
if v == s {
return true
}
}
return false
}
// A Client provides metadata.
type Client struct {
hc *http.Client
}
// NewClient returns a Client that can be used to fetch metadata. All HTTP requests
// will use the given http.Client instead of the default client.
func NewClient(c *http.Client) *Client {
return &Client{hc: c}
}
// getETag returns a value from the metadata service as well as the associated ETag.
// This func is otherwise equivalent to Get.
func (c *Client) getETag(suffix string) (value, etag string, err error) {
// Using a fixed IP makes it very difficult to spoof the metadata service in
// a container, which is an important use-case for local testing of cloud
// deployments. To enable spoofing of the metadata service, the environment
// variable GCE_METADATA_HOST is first inspected to decide where metadata
// requests shall go.
host := os.Getenv(metadataHostEnv)
if host == "" {
// Using 169.254.169.254 instead of "metadata" here because Go
// binaries built with the "netgo" tag and without cgo won't
// know the search suffix for "metadata" is
// ".google.internal", and this IP address is documented as
// being stable anyway.
host = metadataIP
}
url := "http://" + host + "/computeMetadata/v1/" + suffix
req, _ := http.NewRequest("GET", url, nil)
req.Header.Set("Metadata-Flavor", "Google")
req.Header.Set("User-Agent", userAgent)
res, err := c.hc.Do(req)
if err != nil {
return "", "", err
}
defer res.Body.Close()
if res.StatusCode == http.StatusNotFound {
return "", "", NotDefinedError(suffix)
}
if res.StatusCode != 200 {
return "", "", fmt.Errorf("status code %d trying to fetch %s", res.StatusCode, url)
}
all, err := ioutil.ReadAll(res.Body)
if err != nil {
return "", "", err
}
return string(all), res.Header.Get("Etag"), nil
}
// Get returns a value from the metadata service.
// The suffix is appended to "http://${GCE_METADATA_HOST}/computeMetadata/v1/".
//
// If the GCE_METADATA_HOST environment variable is not defined, a default of
// 169.254.169.254 will be used instead.
//
// If the requested metadata is not defined, the returned error will
// be of type NotDefinedError.
func (c *Client) Get(suffix string) (string, error) {
val, _, err := c.getETag(suffix)
return val, err
}
func (c *Client) getTrimmed(suffix string) (s string, err error) {
s, err = c.Get(suffix)
s = strings.TrimSpace(s)
return
}
func (c *Client) lines(suffix string) ([]string, error) {
j, err := c.Get(suffix)
if err != nil {
return nil, err
}
s := strings.Split(strings.TrimSpace(j), "\n")
for i := range s {
s[i] = strings.TrimSpace(s[i])
}
return s, nil
}
// ProjectID returns the current instance's project ID string.
func (c *Client) ProjectID() (string, error) { return projID.get(c) }
// NumericProjectID returns the current instance's numeric project ID.
func (c *Client) NumericProjectID() (string, error) { return projNum.get(c) }
// InstanceID returns the current VM's numeric instance ID.
func (c *Client) InstanceID() (string, error) { return instID.get(c) }
// InternalIP returns the instance's primary internal IP address.
func (c *Client) InternalIP() (string, error) {
return c.getTrimmed("instance/network-interfaces/0/ip")
}
// ExternalIP returns the instance's primary external (public) IP address.
func (c *Client) ExternalIP() (string, error) {
return c.getTrimmed("instance/network-interfaces/0/access-configs/0/external-ip")
}
// Hostname returns the instance's hostname. This will be of the form
// "<instanceID>.c.<projID>.internal".
func (c *Client) Hostname() (string, error) {
return c.getTrimmed("instance/hostname")
}
// InstanceTags returns the list of user-defined instance tags,
// assigned when initially creating a GCE instance.
func (c *Client) InstanceTags() ([]string, error) {
var s []string
j, err := c.Get("instance/tags")
if err != nil {
return nil, err
}
if err := json.NewDecoder(strings.NewReader(j)).Decode(&s); err != nil {
return nil, err
}
return s, nil
}
// InstanceName returns the current VM's instance ID string.
func (c *Client) InstanceName() (string, error) {
host, err := c.Hostname()
if err != nil {
return "", err
}
return strings.Split(host, ".")[0], nil
}
// Zone returns the current VM's zone, such as "us-central1-b".
func (c *Client) Zone() (string, error) {
zone, err := c.getTrimmed("instance/zone")
// zone is of the form "projects/<projNum>/zones/<zoneName>".
if err != nil {
return "", err
}
return zone[strings.LastIndex(zone, "/")+1:], nil
}
// InstanceAttributes returns the list of user-defined attributes,
// assigned when initially creating a GCE VM instance. The value of an
// attribute can be obtained with InstanceAttributeValue.
func (c *Client) InstanceAttributes() ([]string, error) { return c.lines("instance/attributes/") }
// ProjectAttributes returns the list of user-defined attributes
// applying to the project as a whole, not just this VM. The value of
// an attribute can be obtained with ProjectAttributeValue.
func (c *Client) ProjectAttributes() ([]string, error) { return c.lines("project/attributes/") }
// InstanceAttributeValue returns the value of the provided VM
// instance attribute.
//
// If the requested attribute is not defined, the returned error will
// be of type NotDefinedError.
//
// InstanceAttributeValue may return ("", nil) if the attribute was
// defined to be the empty string.
func (c *Client) InstanceAttributeValue(attr string) (string, error) {
return c.Get("instance/attributes/" + attr)
}
// ProjectAttributeValue returns the value of the provided
// project attribute.
//
// If the requested attribute is not defined, the returned error will
// be of type NotDefinedError.
//
// ProjectAttributeValue may return ("", nil) if the attribute was
// defined to be the empty string.
func (c *Client) ProjectAttributeValue(attr string) (string, error) {
return c.Get("project/attributes/" + attr)
}
// Scopes returns the service account scopes for the given account.
// The account may be empty or the string "default" to use the instance's
// main account.
func (c *Client) Scopes(serviceAccount string) ([]string, error) {
if serviceAccount == "" {
serviceAccount = "default"
}
return c.lines("instance/service-accounts/" + serviceAccount + "/scopes")
}
// Subscribe subscribes to a value from the metadata service.
// The suffix is appended to "http://${GCE_METADATA_HOST}/computeMetadata/v1/".
// The suffix may contain query parameters.
//
// Subscribe calls fn with the latest metadata value indicated by the provided
// suffix. If the metadata value is deleted, fn is called with the empty string
// and ok false. Subscribe blocks until fn returns a non-nil error or the value
// is deleted. Subscribe returns the error value returned from the last call to
// fn, which may be nil when ok == false.
func (c *Client) Subscribe(suffix string, fn func(v string, ok bool) error) error {
const failedSubscribeSleep = time.Second * 5
// First check to see if the metadata value exists at all.
val, lastETag, err := c.getETag(suffix)
if err != nil {
return err
}
if err := fn(val, true); err != nil {
return err
}
ok := true
if strings.ContainsRune(suffix, '?') {
suffix += "&wait_for_change=true&last_etag="
} else {
suffix += "?wait_for_change=true&last_etag="
}
for {
val, etag, err := c.getETag(suffix + url.QueryEscape(lastETag))
if err != nil {
if _, deleted := err.(NotDefinedError); !deleted {
time.Sleep(failedSubscribeSleep)
continue // Retry on other errors.
}
ok = false
}
lastETag = etag
if err := fn(val, ok); err != nil || !ok {
return err
}
}
}

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(delete this for feature requests)
## Client
e.g. PubSub
## Describe Your Environment
e.g. Alpine Docker on GKE
## Expected Behavior
e.g. Messages arrive really fast.
## Actual Behavior
e.g. Messages arrive really slowly.

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_February 26, 2018_
*v0.19.0*
- bigquery:
- Support customer-managed encryption keys.
- bigtable:
- Improved emulator support.
- Support GetCluster.
- datastore:
- Add general mutations.
- Support pointer struct fields.
- Support transaction options.
- firestore:
- Add Transaction.GetAll.
- Support document cursors.
- logging:
- Support concurrent RPCs to the service.
- Support per-entry resources.
- profiler:
- Add config options to disable heap and thread profiling.
- Read the project ID from $GOOGLE_CLOUD_PROJECT when it's set.
- pubsub:
- BEHAVIOR CHANGE: Release flow control after ack/nack (instead of after the
callback returns).
- Add SubscriptionInProject.
- Add OpenCensus instrumentation for streaming pull.
- storage:
- Support CORS.
_January 18, 2018_
*v0.18.0*
- bigquery:
- Marked stable.
- Schema inference of nullable fields supported.
- Added TimePartitioning to QueryConfig.
- firestore: Data provided to DocumentRef.Set with a Merge option can contain
Delete sentinels.
- logging: Clients can accept parent resources other than projects.
- pubsub:
- pubsub/pstest: A lighweight fake for pubsub. Experimental; feedback welcome.
- Support updating more subscription metadata: AckDeadline,
RetainAckedMessages and RetentionDuration.
- oslogin/apiv1beta: New client for the Cloud OS Login API.
- rpcreplay: A package for recording and replaying gRPC traffic.
- spanner:
- Add a ReadWithOptions that supports a row limit, as well as an index.
- Support query plan and execution statistics.
- Added [OpenCensus](http://opencensus.io) support.
- storage: Clarify checksum validation for gzipped files (it is not validated
when the file is served uncompressed).
_December 11, 2017_
*v0.17.0*
- firestore BREAKING CHANGES:
- Remove UpdateMap and UpdateStruct; rename UpdatePaths to Update.
Change
`docref.UpdateMap(ctx, map[string]interface{}{"a.b", 1})`
to
`docref.Update(ctx, []firestore.Update{{Path: "a.b", Value: 1}})`
Change
`docref.UpdateStruct(ctx, []string{"Field"}, aStruct)`
to
`docref.Update(ctx, []firestore.Update{{Path: "Field", Value: aStruct.Field}})`
- Rename MergePaths to Merge; require args to be FieldPaths
- A value stored as an integer can be read into a floating-point field, and vice versa.
- bigtable/cmd/cbt:
- Support deleting a column.
- Add regex option for row read.
- spanner: Mark stable.
- storage:
- Add Reader.ContentEncoding method.
- Fix handling of SignedURL headers.
- bigquery:
- If Uploader.Put is called with no rows, it returns nil without making a
call.
- Schema inference supports the "nullable" option in struct tags for
non-required fields.
- TimePartitioning supports "Field".
_October 30, 2017_
*v0.16.0*
- Other bigquery changes:
- `JobIterator.Next` returns `*Job`; removed `JobInfo` (BREAKING CHANGE).
- UseStandardSQL is deprecated; set UseLegacySQL to true if you need
Legacy SQL.
- Uploader.Put will generate a random insert ID if you do not provide one.
- Support time partitioning for load jobs.
- Support dry-run queries.
- A `Job` remembers its last retrieved status.
- Support retrieving job configuration.
- Support labels for jobs and tables.
- Support dataset access lists.
- Improve support for external data sources, including data from Bigtable and
Google Sheets, and tables with external data.
- Support updating a table's view configuration.
- Fix uploading civil times with nanoseconds.
- storage:
- Support PubSub notifications.
- Support Requester Pays buckets.
- profiler: Support goroutine and mutex profile types.
_October 3, 2017_
*v0.15.0*
- firestore: beta release. See the
[announcement](https://firebase.googleblog.com/2017/10/introducing-cloud-firestore.html).
- errorreporting: The existing package has been redesigned.
- errors: This package has been removed. Use errorreporting.
_September 28, 2017_
*v0.14.0*
- bigquery BREAKING CHANGES:
- Standard SQL is the default for queries and views.
- `Table.Create` takes `TableMetadata` as a second argument, instead of
options.
- `Dataset.Create` takes `DatasetMetadata` as a second argument.
- `DatasetMetadata` field `ID` renamed to `FullID`
- `TableMetadata` field `ID` renamed to `FullID`
- Other bigquery changes:
- The client will append a random suffix to a provided job ID if you set
`AddJobIDSuffix` to true in a job config.
- Listing jobs is supported.
- Better retry logic.
- vision, language, speech: clients are now stable
- monitoring: client is now beta
- profiler:
- Rename InstanceName to Instance, ZoneName to Zone
- Auto-detect service name and version on AppEngine.
_September 8, 2017_
*v0.13.0*
- bigquery: UseLegacySQL options for CreateTable and QueryConfig. Use these
options to continue using Legacy SQL after the client switches its default
to Standard SQL.
- bigquery: Support for updating dataset labels.
- bigquery: Set DatasetIterator.ProjectID to list datasets in a project other
than the client's. DatasetsInProject is no longer needed and is deprecated.
- bigtable: Fail ListInstances when any zones fail.
- spanner: support decoding of slices of basic types (e.g. []string, []int64,
etc.)
- logging/logadmin: UpdateSink no longer creates a sink if it is missing
(actually a change to the underlying service, not the client)
- profiler: Service and ServiceVersion replace Target in Config.
_August 22, 2017_
*v0.12.0*
- pubsub: Subscription.Receive now uses streaming pull.
- pubsub: add Client.TopicInProject to access topics in a different project
than the client.
- errors: renamed errorreporting. The errors package will be removed shortly.
- datastore: improved retry behavior.
- bigquery: support updates to dataset metadata, with etags.
- bigquery: add etag support to Table.Update (BREAKING: etag argument added).
- bigquery: generate all job IDs on the client.
- storage: support bucket lifecycle configurations.
_July 31, 2017_
*v0.11.0*
- Clients for spanner, pubsub and video are now in beta.
- New client for DLP.
- spanner: performance and testing improvements.
- storage: requester-pays buckets are supported.
- storage, profiler, bigtable, bigquery: bug fixes and other minor improvements.
- pubsub: bug fixes and other minor improvements
_June 17, 2017_
*v0.10.0*
- pubsub: Subscription.ModifyPushConfig replaced with Subscription.Update.
- pubsub: Subscription.Receive now runs concurrently for higher throughput.
- vision: cloud.google.com/go/vision is deprecated. Use
cloud.google.com/go/vision/apiv1 instead.
- translation: now stable.
- trace: several changes to the surface. See the link below.
[Code changes required from v0.9.0.](https://github.com/GoogleCloudPlatform/google-cloud-go/blob/master/MIGRATION.md)
_March 17, 2017_
Breaking Pubsub changes.
* Publish is now asynchronous
([announcement](https://groups.google.com/d/topic/google-api-go-announce/aaqRDIQ3rvU/discussion)).
* Subscription.Pull replaced by Subscription.Receive, which takes a callback ([announcement](https://groups.google.com/d/topic/google-api-go-announce/8pt6oetAdKc/discussion)).
* Message.Done replaced with Message.Ack and Message.Nack.
_February 14, 2017_
Release of a client library for Spanner. See
the
[blog post](https://cloudplatform.googleblog.com/2017/02/introducing-Cloud-Spanner-a-global-database-service-for-mission-critical-applications.html).
Note that although the Spanner service is beta, the Go client library is alpha.
_December 12, 2016_
Beta release of BigQuery, DataStore, Logging and Storage. See the
[blog post](https://cloudplatform.googleblog.com/2016/12/announcing-new-google-cloud-client.html).
Also, BigQuery now supports structs. Read a row directly into a struct with
`RowIterator.Next`, and upload a row directly from a struct with `Uploader.Put`.
You can also use field tags. See the [package documentation][cloud-bigquery-ref]
for details.
_December 5, 2016_
More changes to BigQuery:
* The `ValueList` type was removed. It is no longer necessary. Instead of
```go
var v ValueList
... it.Next(&v) ..
```
use
```go
var v []Value
... it.Next(&v) ...
```
* Previously, repeatedly calling `RowIterator.Next` on the same `[]Value` or
`ValueList` would append to the slice. Now each call resets the size to zero first.
* Schema inference will infer the SQL type BYTES for a struct field of
type []byte. Previously it inferred STRING.
* The types `uint`, `uint64` and `uintptr` are no longer supported in schema
inference. BigQuery's integer type is INT64, and those types may hold values
that are not correctly represented in a 64-bit signed integer.
* The SQL types DATE, TIME and DATETIME are now supported. They correspond to
the `Date`, `Time` and `DateTime` types in the new `cloud.google.com/go/civil`
package.
_November 17, 2016_
Change to BigQuery: values from INTEGER columns will now be returned as int64,
not int. This will avoid errors arising from large values on 32-bit systems.
_November 8, 2016_
New datastore feature: datastore now encodes your nested Go structs as Entity values,
instead of a flattened list of the embedded struct's fields.
This means that you may now have twice-nested slices, eg.
```go
type State struct {
Cities []struct{
Populations []int
}
}
```
See [the announcement](https://groups.google.com/forum/#!topic/google-api-go-announce/79jtrdeuJAg) for
more details.
_November 8, 2016_
Breaking changes to datastore: contexts no longer hold namespaces; instead you
must set a key's namespace explicitly. Also, key functions have been changed
and renamed.
* The WithNamespace function has been removed. To specify a namespace in a Query, use the Query.Namespace method:
```go
q := datastore.NewQuery("Kind").Namespace("ns")
```
* All the fields of Key are exported. That means you can construct any Key with a struct literal:
```go
k := &Key{Kind: "Kind", ID: 37, Namespace: "ns"}
```
* As a result of the above, the Key methods Kind, ID, d.Name, Parent, SetParent and Namespace have been removed.
* `NewIncompleteKey` has been removed, replaced by `IncompleteKey`. Replace
```go
NewIncompleteKey(ctx, kind, parent)
```
with
```go
IncompleteKey(kind, parent)
```
and if you do use namespaces, make sure you set the namespace on the returned key.
* `NewKey` has been removed, replaced by `NameKey` and `IDKey`. Replace
```go
NewKey(ctx, kind, name, 0, parent)
NewKey(ctx, kind, "", id, parent)
```
with
```go
NameKey(kind, name, parent)
IDKey(kind, id, parent)
```
and if you do use namespaces, make sure you set the namespace on the returned key.
* The `Done` variable has been removed. Replace `datastore.Done` with `iterator.Done`, from the package `google.golang.org/api/iterator`.
* The `Client.Close` method will have a return type of error. It will return the result of closing the underlying gRPC connection.
See [the announcement](https://groups.google.com/forum/#!topic/google-api-go-announce/hqXtM_4Ix-0) for
more details.
_October 27, 2016_
Breaking change to bigquery: `NewGCSReference` is now a function,
not a method on `Client`.
New bigquery feature: `Table.LoaderFrom` now accepts a `ReaderSource`, enabling
loading data into a table from a file or any `io.Reader`.
_October 21, 2016_
Breaking change to pubsub: removed `pubsub.Done`.
Use `iterator.Done` instead, where `iterator` is the package
`google.golang.org/api/iterator`.
_October 19, 2016_
Breaking changes to cloud.google.com/go/bigquery:
* Client.Table and Client.OpenTable have been removed.
Replace
```go
client.OpenTable("project", "dataset", "table")
```
with
```go
client.DatasetInProject("project", "dataset").Table("table")
```
* Client.CreateTable has been removed.
Replace
```go
client.CreateTable(ctx, "project", "dataset", "table")
```
with
```go
client.DatasetInProject("project", "dataset").Table("table").Create(ctx)
```
* Dataset.ListTables have been replaced with Dataset.Tables.
Replace
```go
tables, err := ds.ListTables(ctx)
```
with
```go
it := ds.Tables(ctx)
for {
table, err := it.Next()
if err == iterator.Done {
break
}
if err != nil {
// TODO: Handle error.
}
// TODO: use table.
}
```
* Client.Read has been replaced with Job.Read, Table.Read and Query.Read.
Replace
```go
it, err := client.Read(ctx, job)
```
with
```go
it, err := job.Read(ctx)
```
and similarly for reading from tables or queries.
* The iterator returned from the Read methods is now named RowIterator. Its
behavior is closer to the other iterators in these libraries. It no longer
supports the Schema method; see the next item.
Replace
```go
for it.Next(ctx) {
var vals ValueList
if err := it.Get(&vals); err != nil {
// TODO: Handle error.
}
// TODO: use vals.
}
if err := it.Err(); err != nil {
// TODO: Handle error.
}
```
with
```
for {
var vals ValueList
err := it.Next(&vals)
if err == iterator.Done {
break
}
if err != nil {
// TODO: Handle error.
}
// TODO: use vals.
}
```
Instead of the `RecordsPerRequest(n)` option, write
```go
it.PageInfo().MaxSize = n
```
Instead of the `StartIndex(i)` option, write
```go
it.StartIndex = i
```
* ValueLoader.Load now takes a Schema in addition to a slice of Values.
Replace
```go
func (vl *myValueLoader) Load(v []bigquery.Value)
```
with
```go
func (vl *myValueLoader) Load(v []bigquery.Value, s bigquery.Schema)
```
* Table.Patch is replace by Table.Update.
Replace
```go
p := table.Patch()
p.Description("new description")
metadata, err := p.Apply(ctx)
```
with
```go
metadata, err := table.Update(ctx, bigquery.TableMetadataToUpdate{
Description: "new description",
})
```
* Client.Copy is replaced by separate methods for each of its four functions.
All options have been replaced by struct fields.
* To load data from Google Cloud Storage into a table, use Table.LoaderFrom.
Replace
```go
client.Copy(ctx, table, gcsRef)
```
with
```go
table.LoaderFrom(gcsRef).Run(ctx)
```
Instead of passing options to Copy, set fields on the Loader:
```go
loader := table.LoaderFrom(gcsRef)
loader.WriteDisposition = bigquery.WriteTruncate
```
* To extract data from a table into Google Cloud Storage, use
Table.ExtractorTo. Set fields on the returned Extractor instead of
passing options.
Replace
```go
client.Copy(ctx, gcsRef, table)
```
with
```go
table.ExtractorTo(gcsRef).Run(ctx)
```
* To copy data into a table from one or more other tables, use
Table.CopierFrom. Set fields on the returned Copier instead of passing options.
Replace
```go
client.Copy(ctx, dstTable, srcTable)
```
with
```go
dst.Table.CopierFrom(srcTable).Run(ctx)
```
* To start a query job, create a Query and call its Run method. Set fields
on the query instead of passing options.
Replace
```go
client.Copy(ctx, table, query)
```
with
```go
query.Run(ctx)
```
* Table.NewUploader has been renamed to Table.Uploader. Instead of options,
configure an Uploader by setting its fields.
Replace
```go
u := table.NewUploader(bigquery.UploadIgnoreUnknownValues())
```
with
```go
u := table.NewUploader(bigquery.UploadIgnoreUnknownValues())
u.IgnoreUnknownValues = true
```
_October 10, 2016_
Breaking changes to cloud.google.com/go/storage:
* AdminClient replaced by methods on Client.
Replace
```go
adminClient.CreateBucket(ctx, bucketName, attrs)
```
with
```go
client.Bucket(bucketName).Create(ctx, projectID, attrs)
```
* BucketHandle.List replaced by BucketHandle.Objects.
Replace
```go
for query != nil {
objs, err := bucket.List(d.ctx, query)
if err != nil { ... }
query = objs.Next
for _, obj := range objs.Results {
fmt.Println(obj)
}
}
```
with
```go
iter := bucket.Objects(d.ctx, query)
for {
obj, err := iter.Next()
if err == iterator.Done {
break
}
if err != nil { ... }
fmt.Println(obj)
}
```
(The `iterator` package is at `google.golang.org/api/iterator`.)
Replace `Query.Cursor` with `ObjectIterator.PageInfo().Token`.
Replace `Query.MaxResults` with `ObjectIterator.PageInfo().MaxSize`.
* ObjectHandle.CopyTo replaced by ObjectHandle.CopierFrom.
Replace
```go
attrs, err := src.CopyTo(ctx, dst, nil)
```
with
```go
attrs, err := dst.CopierFrom(src).Run(ctx)
```
Replace
```go
attrs, err := src.CopyTo(ctx, dst, &storage.ObjectAttrs{ContextType: "text/html"})
```
with
```go
c := dst.CopierFrom(src)
c.ContextType = "text/html"
attrs, err := c.Run(ctx)
```
* ObjectHandle.ComposeFrom replaced by ObjectHandle.ComposerFrom.
Replace
```go
attrs, err := dst.ComposeFrom(ctx, []*storage.ObjectHandle{src1, src2}, nil)
```
with
```go
attrs, err := dst.ComposerFrom(src1, src2).Run(ctx)
```
* ObjectHandle.Update's ObjectAttrs argument replaced by ObjectAttrsToUpdate.
Replace
```go
attrs, err := obj.Update(ctx, &storage.ObjectAttrs{ContextType: "text/html"})
```
with
```go
attrs, err := obj.Update(ctx, storage.ObjectAttrsToUpdate{ContextType: "text/html"})
```
* ObjectHandle.WithConditions replaced by ObjectHandle.If.
Replace
```go
obj.WithConditions(storage.Generation(gen), storage.IfMetaGenerationMatch(mgen))
```
with
```go
obj.Generation(gen).If(storage.Conditions{MetagenerationMatch: mgen})
```
Replace
```go
obj.WithConditions(storage.IfGenerationMatch(0))
```
with
```go
obj.If(storage.Conditions{DoesNotExist: true})
```
* `storage.Done` replaced by `iterator.Done` (from package `google.golang.org/api/iterator`).
_October 6, 2016_
Package preview/logging deleted. Use logging instead.
_September 27, 2016_
Logging client replaced with preview version (see below).
_September 8, 2016_
* New clients for some of Google's Machine Learning APIs: Vision, Speech, and
Natural Language.
* Preview version of a new [Stackdriver Logging][cloud-logging] client in
[`cloud.google.com/go/preview/logging`](https://godoc.org/cloud.google.com/go/preview/logging).
This client uses gRPC as its transport layer, and supports log reading, sinks
and metrics. It will replace the current client at `cloud.google.com/go/logging` shortly.

77
vendor/cloud.google.com/go/regen-gapic.sh generated vendored Executable file
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@ -0,0 +1,77 @@
#!/bin/bash
# This script generates all GAPIC clients in this repo.
# One-time setup:
# cd path/to/googleapis # https://github.com/googleapis/googleapis
# virtualenv env
# . env/bin/activate
# pip install googleapis-artman
# deactivate
#
# Regenerate:
# cd path/to/googleapis
# . env/bin/activate
# $GOPATH/src/cloud.google.com/go/regen-gapic.sh
# deactivate
#
# Being in googleapis directory is important;
# that's where we find YAML files and where artman puts the "artman-genfiles" directory.
#
# NOTE: This script does not generate the "raw" gRPC client found in google.golang.org/genproto.
# To do that, use the regen.sh script in the genproto repo instead.
set -ex
APIS=(
google/iam/artman_iam_admin.yaml
google/cloud/asset/artman_cloudasset_v1beta1.yaml
google/iam/credentials/artman_iamcredentials_v1.yaml
google/cloud/bigquery/datatransfer/artman_bigquerydatatransfer.yaml
google/cloud/dataproc/artman_dataproc_v1.yaml
google/cloud/dataproc/artman_dataproc_v1beta2.yaml
google/cloud/dialogflow/artman_dialogflow_v2.yaml
google/cloud/kms/artman_cloudkms.yaml
google/cloud/language/artman_language_v1.yaml
google/cloud/language/artman_language_v1beta2.yaml
google/cloud/oslogin/artman_oslogin_v1.yaml
google/cloud/oslogin/artman_oslogin_v1beta.yaml
google/cloud/redis/artman_redis_v1beta1.yaml
google/cloud/redis/artman_redis_v1.yaml
google/cloud/speech/artman_speech_v1.yaml
google/cloud/speech/artman_speech_v1p1beta1.yaml
google/cloud/tasks/artman_cloudtasks_v2beta2.yaml
google/cloud/tasks/artman_cloudtasks_v2beta3.yaml
google/cloud/texttospeech/artman_texttospeech_v1.yaml
google/cloud/videointelligence/artman_videointelligence_v1.yaml
google/cloud/videointelligence/artman_videointelligence_v1beta1.yaml
google/cloud/videointelligence/artman_videointelligence_v1beta2.yaml
google/cloud/vision/artman_vision_v1.yaml
google/cloud/vision/artman_vision_v1p1beta1.yaml
google/container/artman_container.yaml
google/devtools/artman_clouddebugger.yaml
google/devtools/clouderrorreporting/artman_errorreporting.yaml
google/devtools/cloudtrace/artman_cloudtrace_v1.yaml
google/devtools/cloudtrace/artman_cloudtrace_v2.yaml
google/devtools/containeranalysis/artman_containeranalysis_v1beta1.yaml
google/firestore/artman_firestore.yaml
google/logging/artman_logging.yaml
google/longrunning/artman_longrunning.yaml
google/monitoring/artman_monitoring.yaml
google/privacy/dlp/artman_dlp_v2.yaml
google/pubsub/artman_pubsub.yaml
google/spanner/admin/database/artman_spanner_admin_database.yaml
google/spanner/admin/instance/artman_spanner_admin_instance.yaml
google/spanner/artman_spanner.yaml
)
for api in "${APIS[@]}"; do
rm -rf artman-genfiles/*
artman --config "$api" generate go_gapic
cp -r artman-genfiles/gapi-*/cloud.google.com/go/* $GOPATH/src/cloud.google.com/go/
done
#go list cloud.google.com/go/... | grep apiv | xargs go test
#go test -short cloud.google.com/go/...
#echo "googleapis version: $(git rev-parse HEAD)"

88
vendor/cloud.google.com/go/run-tests.sh generated vendored Executable file
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@ -0,0 +1,88 @@
#!/bin/bash
# Selectively run tests for this repo, based on what has changed
# in a commit. Runs short tests for the whole repo, and full tests
# for changed directories.
set -e
prefix=cloud.google.com/go
dryrun=false
if [[ $1 == "-n" ]]; then
dryrun=true
shift
fi
if [[ $1 == "" ]]; then
echo >&2 "usage: $0 [-n] COMMIT"
exit 1
fi
# Files or directories that cause all tests to run if modified.
declare -A run_all
run_all=([.travis.yml]=1 [run-tests.sh]=1)
function run {
if $dryrun; then
echo $*
else
(set -x; $*)
fi
}
# Find all the packages that have changed in this commit.
declare -A changed_packages
for f in $(git diff-tree --no-commit-id --name-only -r $1); do
if [[ ${run_all[$f]} == 1 ]]; then
# This change requires a full test. Do it and exit.
run go test -race -v $prefix/...
exit
fi
# Map, e.g., "spanner/client.go" to "$prefix/spanner".
d=$(dirname $f)
if [[ $d == "." ]]; then
pkg=$prefix
else
pkg=$prefix/$d
fi
changed_packages[$pkg]=1
done
echo "changed packages: ${!changed_packages[*]}"
# Reports whether its argument, a package name, depends (recursively)
# on a changed package.
function depends_on_changed_package {
# According to go list, a package does not depend on itself, so
# we test that separately.
if [[ ${changed_packages[$1]} == 1 ]]; then
return 0
fi
for dep in $(go list -f '{{range .Deps}}{{.}} {{end}}' $1); do
if [[ ${changed_packages[$dep]} == 1 ]]; then
return 0
fi
done
return 1
}
# Collect the packages into two separate lists. (It is faster to call "go test" on a
# list of packages than to individually "go test" each one.)
shorts=
fulls=
for pkg in $(go list $prefix/...); do # for each package in the repo
if depends_on_changed_package $pkg; then # if it depends on a changed package
fulls="$fulls $pkg" # run the full test
else # otherwise
shorts="$shorts $pkg" # run the short test
fi
done
run go test -race -v -short $shorts
if [[ $fulls != "" ]]; then
run go test -race -v $fulls
fi

3
vendor/github.com/gophercloud/gophercloud/.gitignore generated vendored Normal file
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@ -0,0 +1,3 @@
**/*.swp
.idea
.vscode

21
vendor/github.com/gophercloud/gophercloud/.travis.yml generated vendored Normal file
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@ -0,0 +1,21 @@
language: go
sudo: false
install:
- go get golang.org/x/crypto/ssh
- go get -v -tags 'fixtures acceptance' ./...
- go get github.com/wadey/gocovmerge
- go get github.com/mattn/goveralls
- go get golang.org/x/tools/cmd/goimports
go:
- "1.10"
- "tip"
env:
global:
- secure: "xSQsAG5wlL9emjbCdxzz/hYQsSpJ/bABO1kkbwMSISVcJ3Nk0u4ywF+LS4bgeOnwPfmFvNTOqVDu3RwEvMeWXSI76t1piCPcObutb2faKLVD/hLoAS76gYX+Z8yGWGHrSB7Do5vTPj1ERe2UljdrnsSeOXzoDwFxYRaZLX4bBOB4AyoGvRniil5QXPATiA1tsWX1VMicj8a4F8X+xeESzjt1Q5Iy31e7vkptu71bhvXCaoo5QhYwT+pLR9dN0S1b7Ro0KVvkRefmr1lUOSYd2e74h6Lc34tC1h3uYZCS4h47t7v5cOXvMNxinEj2C51RvbjvZI1RLVdkuAEJD1Iz4+Ote46nXbZ//6XRZMZz/YxQ13l7ux1PFjgEB6HAapmF5Xd8PRsgeTU9LRJxpiTJ3P5QJ3leS1va8qnziM5kYipj/Rn+V8g2ad/rgkRox9LSiR9VYZD2Pe45YCb1mTKSl2aIJnV7nkOqsShY5LNB4JZSg7xIffA+9YVDktw8dJlATjZqt7WvJJ49g6A61mIUV4C15q2JPGKTkZzDiG81NtmS7hFa7k0yaE2ELgYocbcuyUcAahhxntYTC0i23nJmEHVNiZmBO3u7EgpWe4KGVfumU+lt12tIn5b3dZRBBUk3QakKKozSK1QPHGpk/AZGrhu7H6l8to6IICKWtDcyMPQ="
before_script:
- go vet ./...
script:
- ./script/coverage
- ./script/format
after_success:
- $HOME/gopath/bin/goveralls -service=travis-ci -coverprofile=cover.out

86
vendor/github.com/gophercloud/gophercloud/.zuul.yaml generated vendored Normal file
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@ -0,0 +1,86 @@
- job:
name: gophercloud-unittest
parent: golang-test
description: |
Run gophercloud unit test
run: .zuul/playbooks/gophercloud-unittest/run.yaml
nodeset: ubuntu-xenial-ut
- job:
name: gophercloud-acceptance-test
parent: golang-test
description: |
Run gophercloud acceptance test on master branch
run: .zuul/playbooks/gophercloud-acceptance-test/run.yaml
- job:
name: gophercloud-acceptance-test-queens
parent: gophercloud-acceptance-test
description: |
Run gophercloud acceptance test on queens branch
vars:
global_env:
OS_BRANCH: stable/queens
- job:
name: gophercloud-acceptance-test-pike
parent: gophercloud-acceptance-test
description: |
Run gophercloud acceptance test on pike branch
vars:
global_env:
OS_BRANCH: stable/pike
- job:
name: gophercloud-acceptance-test-ocata
parent: gophercloud-acceptance-test
description: |
Run gophercloud acceptance test on ocata branch
vars:
global_env:
OS_BRANCH: stable/ocata
- job:
name: gophercloud-acceptance-test-newton
parent: gophercloud-acceptance-test
description: |
Run gophercloud acceptance test on newton branch
vars:
global_env:
OS_BRANCH: stable/newton
- job:
name: gophercloud-acceptance-test-mitaka
parent: gophercloud-acceptance-test
description: |
Run gophercloud acceptance test on mitaka branch
vars:
global_env:
OS_BRANCH: stable/mitaka
nodeset: ubuntu-trusty
- project:
name: gophercloud/gophercloud
check:
jobs:
- gophercloud-unittest
- gophercloud-acceptance-test
recheck-mitaka:
jobs:
- gophercloud-acceptance-test-mitaka
recheck-newton:
jobs:
- gophercloud-acceptance-test-newton
recheck-ocata:
jobs:
- gophercloud-acceptance-test-ocata
recheck-pike:
jobs:
- gophercloud-acceptance-test-pike
recheck-queens:
jobs:
- gophercloud-acceptance-test-queens
periodic:
jobs:
- gophercloud-unittest
- gophercloud-acceptance-test

0
vendor/github.com/gophercloud/gophercloud/CHANGELOG.md generated vendored Normal file
View file

191
vendor/github.com/gophercloud/gophercloud/LICENSE generated vendored Normal file
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@ -0,0 +1,191 @@
Copyright 2012-2013 Rackspace, Inc.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use
this file except in compliance with the License. You may obtain a copy of the
License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed
under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
------
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.
"Legal Entity" shall mean the union of the acting entity and all
other entities that control, are controlled by, or are under common
control with that entity. For the purposes of this definition,
"control" means (i) the power, direct or indirect, to cause the
direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation
source, and configuration files.
"Object" form shall mean any form resulting from mechanical
transformation or translation of a Source form, including but
not limited to compiled object code, generated documentation,
and conversions to other media types.
"Work" shall mean the work of authorship, whether in Source or
Object form, made available under the License, as indicated by a
copyright notice that is included in or attached to the work
(an example is provided in the Appendix below).
"Derivative Works" shall mean any work, whether in Source or Object
form, that is based on (or derived from) the Work and for which the
editorial revisions, annotations, elaborations, or other modifications
represent, as a whole, an original work of authorship. For the purposes
of this License, Derivative Works shall not include works that remain
separable from, or merely link (or bind by name) to the interfaces of,
the Work and Derivative Works thereof.
"Contribution" shall mean any work of authorship, including
the original version of the Work and any modifications or additions
to that Work or Derivative Works thereof, that is intentionally
submitted to Licensor for inclusion in the Work by the copyright owner
or by an individual or Legal Entity authorized to submit on behalf of
the copyright owner. For the purposes of this definition, "submitted"
means any form of electronic, verbal, or written communication sent
to the Licensor or its representatives, including but not limited to
communication on electronic mailing lists, source code control systems,
and issue tracking systems that are managed by, or on behalf of, the
Licensor for the purpose of discussing and improving the Work, but
excluding communication that is conspicuously marked or otherwise
designated in writing by the copyright owner as "Not a Contribution."
"Contributor" shall mean Licensor and any individual or Legal Entity
on behalf of whom a Contribution has been received by Licensor and
subsequently incorporated within the Work.
2. Grant of Copyright License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
copyright license to reproduce, prepare Derivative Works of,
publicly display, publicly perform, sublicense, and distribute the
Work and such Derivative Works in Source or Object form.
3. Grant of Patent License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
(except as stated in this section) patent license to make, have made,
use, offer to sell, sell, import, and otherwise transfer the Work,
where such license applies only to those patent claims licensable
by such Contributor that are necessarily infringed by their
Contribution(s) alone or by combination of their Contribution(s)
with the Work to which such Contribution(s) was submitted. If You
institute patent litigation against any entity (including a
cross-claim or counterclaim in a lawsuit) alleging that the Work
or a Contribution incorporated within the Work constitutes direct
or contributory patent infringement, then any patent licenses
granted to You under this License for that Work shall terminate
as of the date such litigation is filed.
4. Redistribution. You may reproduce and distribute copies of the
Work or Derivative Works thereof in any medium, with or without
modifications, and in Source or Object form, provided that You
meet the following conditions:
(a) You must give any other recipients of the Work or
Derivative Works a copy of this License; and
(b) You must cause any modified files to carry prominent notices
stating that You changed the files; and
(c) You must retain, in the Source form of any Derivative Works
that You distribute, all copyright, patent, trademark, and
attribution notices from the Source form of the Work,
excluding those notices that do not pertain to any part of
the Derivative Works; and
(d) If the Work includes a "NOTICE" text file as part of its
distribution, then any Derivative Works that You distribute must
include a readable copy of the attribution notices contained
within such NOTICE file, excluding those notices that do not
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of the NOTICE file are for informational purposes only and
do not modify the License. You may add Your own attribution
notices within Derivative Works that You distribute, alongside
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that such additional attribution notices cannot be construed
as modifying the License.
You may add Your own copyright statement to Your modifications and
may provide additional or different license terms and conditions
for use, reproduction, or distribution of Your modifications, or
for any such Derivative Works as a whole, provided Your use,
reproduction, and distribution of the Work otherwise complies with
the conditions stated in this License.
5. Submission of Contributions. Unless You explicitly state otherwise,
any Contribution intentionally submitted for inclusion in the Work
by You to the Licensor shall be under the terms and conditions of
this License, without any additional terms or conditions.
Notwithstanding the above, nothing herein shall supersede or modify
the terms of any separate license agreement you may have executed
with Licensor regarding such Contributions.
6. Trademarks. This License does not grant permission to use the trade
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7. Disclaimer of Warranty. Unless required by applicable law or
agreed to in writing, Licensor provides the Work (and each
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied, including, without limitation, any warranties or conditions
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
PARTICULAR PURPOSE. You are solely responsible for determining the
appropriateness of using or redistributing the Work and assume any
risks associated with Your exercise of permissions under this License.
8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
incidental, or consequential damages of any character arising as a
result of this License or out of the use or inability to use the
Work (including but not limited to damages for loss of goodwill,
work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses), even if such Contributor
has been advised of the possibility of such damages.
9. Accepting Warranty or Additional Liability. While redistributing
the Work or Derivative Works thereof, You may choose to offer,
and charge a fee for, acceptance of support, warranty, indemnity,
or other liability obligations and/or rights consistent with this
License. However, in accepting such obligations, You may act only
on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS

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# Gophercloud: an OpenStack SDK for Go
[![Build Status](https://travis-ci.org/gophercloud/gophercloud.svg?branch=master)](https://travis-ci.org/gophercloud/gophercloud)
[![Coverage Status](https://coveralls.io/repos/github/gophercloud/gophercloud/badge.svg?branch=master)](https://coveralls.io/github/gophercloud/gophercloud?branch=master)
Gophercloud is an OpenStack Go SDK.
## Useful links
* [Reference documentation](http://godoc.org/github.com/gophercloud/gophercloud)
* [Effective Go](https://golang.org/doc/effective_go.html)
## How to install
Before installing, you need to ensure that your [GOPATH environment variable](https://golang.org/doc/code.html#GOPATH)
is pointing to an appropriate directory where you want to install Gophercloud:
```bash
mkdir $HOME/go
export GOPATH=$HOME/go
```
To protect yourself against changes in your dependencies, we highly recommend choosing a
[dependency management solution](https://github.com/golang/go/wiki/PackageManagementTools) for
your projects, such as [godep](https://github.com/tools/godep). Once this is set up, you can install
Gophercloud as a dependency like so:
```bash
go get github.com/gophercloud/gophercloud
# Edit your code to import relevant packages from "github.com/gophercloud/gophercloud"
godep save ./...
```
This will install all the source files you need into a `Godeps/_workspace` directory, which is
referenceable from your own source files when you use the `godep go` command.
## Getting started
### Credentials
Because you'll be hitting an API, you will need to retrieve your OpenStack
credentials and either store them as environment variables or in your local Go
files. The first method is recommended because it decouples credential
information from source code, allowing you to push the latter to your version
control system without any security risk.
You will need to retrieve the following:
* username
* password
* a valid Keystone identity URL
For users that have the OpenStack dashboard installed, there's a shortcut. If
you visit the `project/access_and_security` path in Horizon and click on the
"Download OpenStack RC File" button at the top right hand corner, you will
download a bash file that exports all of your access details to environment
variables. To execute the file, run `source admin-openrc.sh` and you will be
prompted for your password.
### Authentication
Once you have access to your credentials, you can begin plugging them into
Gophercloud. The next step is authentication, and this is handled by a base
"Provider" struct. To get one, you can either pass in your credentials
explicitly, or tell Gophercloud to use environment variables:
```go
import (
"github.com/gophercloud/gophercloud"
"github.com/gophercloud/gophercloud/openstack"
"github.com/gophercloud/gophercloud/openstack/utils"
)
// Option 1: Pass in the values yourself
opts := gophercloud.AuthOptions{
IdentityEndpoint: "https://openstack.example.com:5000/v2.0",
Username: "{username}",
Password: "{password}",
}
// Option 2: Use a utility function to retrieve all your environment variables
opts, err := openstack.AuthOptionsFromEnv()
```
Once you have the `opts` variable, you can pass it in and get back a
`ProviderClient` struct:
```go
provider, err := openstack.AuthenticatedClient(opts)
```
The `ProviderClient` is the top-level client that all of your OpenStack services
derive from. The provider contains all of the authentication details that allow
your Go code to access the API - such as the base URL and token ID.
### Provision a server
Once we have a base Provider, we inject it as a dependency into each OpenStack
service. In order to work with the Compute API, we need a Compute service
client; which can be created like so:
```go
client, err := openstack.NewComputeV2(provider, gophercloud.EndpointOpts{
Region: os.Getenv("OS_REGION_NAME"),
})
```
We then use this `client` for any Compute API operation we want. In our case,
we want to provision a new server - so we invoke the `Create` method and pass
in the flavor ID (hardware specification) and image ID (operating system) we're
interested in:
```go
import "github.com/gophercloud/gophercloud/openstack/compute/v2/servers"
server, err := servers.Create(client, servers.CreateOpts{
Name: "My new server!",
FlavorRef: "flavor_id",
ImageRef: "image_id",
}).Extract()
```
The above code sample creates a new server with the parameters, and embodies the
new resource in the `server` variable (a
[`servers.Server`](http://godoc.org/github.com/gophercloud/gophercloud) struct).
## Advanced Usage
Have a look at the [FAQ](./docs/FAQ.md) for some tips on customizing the way Gophercloud works.
## Backwards-Compatibility Guarantees
None. Vendor it and write tests covering the parts you use.
## Contributing
See the [contributing guide](./.github/CONTRIBUTING.md).
## Help and feedback
If you're struggling with something or have spotted a potential bug, feel free
to submit an issue to our [bug tracker](https://github.com/gophercloud/gophercloud/issues).
## Thank You
We'd like to extend special thanks and appreciation to the following:
### OpenLab
<a href="http://openlabtesting.org/"><img src="./docs/assets/openlab.png" width="600px"></a>
OpenLab is providing a full CI environment to test each PR and merge for a variety of OpenStack releases.
### VEXXHOST
<a href="https://vexxhost.com/"><img src="./docs/assets/vexxhost.png" width="600px"></a>
VEXXHOST is providing their services to assist with the development and testing of Gophercloud.

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package gophercloud
/*
AuthOptions stores information needed to authenticate to an OpenStack Cloud.
You can populate one manually, or use a provider's AuthOptionsFromEnv() function
to read relevant information from the standard environment variables. Pass one
to a provider's AuthenticatedClient function to authenticate and obtain a
ProviderClient representing an active session on that provider.
Its fields are the union of those recognized by each identity implementation and
provider.
An example of manually providing authentication information:
opts := gophercloud.AuthOptions{
IdentityEndpoint: "https://openstack.example.com:5000/v2.0",
Username: "{username}",
Password: "{password}",
TenantID: "{tenant_id}",
}
provider, err := openstack.AuthenticatedClient(opts)
An example of using AuthOptionsFromEnv(), where the environment variables can
be read from a file, such as a standard openrc file:
opts, err := openstack.AuthOptionsFromEnv()
provider, err := openstack.AuthenticatedClient(opts)
*/
type AuthOptions struct {
// IdentityEndpoint specifies the HTTP endpoint that is required to work with
// the Identity API of the appropriate version. While it's ultimately needed by
// all of the identity services, it will often be populated by a provider-level
// function.
//
// The IdentityEndpoint is typically referred to as the "auth_url" or
// "OS_AUTH_URL" in the information provided by the cloud operator.
IdentityEndpoint string `json:"-"`
// Username is required if using Identity V2 API. Consult with your provider's
// control panel to discover your account's username. In Identity V3, either
// UserID or a combination of Username and DomainID or DomainName are needed.
Username string `json:"username,omitempty"`
UserID string `json:"-"`
Password string `json:"password,omitempty"`
// At most one of DomainID and DomainName must be provided if using Username
// with Identity V3. Otherwise, either are optional.
DomainID string `json:"-"`
DomainName string `json:"name,omitempty"`
// The TenantID and TenantName fields are optional for the Identity V2 API.
// The same fields are known as project_id and project_name in the Identity
// V3 API, but are collected as TenantID and TenantName here in both cases.
// Some providers allow you to specify a TenantName instead of the TenantId.
// Some require both. Your provider's authentication policies will determine
// how these fields influence authentication.
// If DomainID or DomainName are provided, they will also apply to TenantName.
// It is not currently possible to authenticate with Username and a Domain
// and scope to a Project in a different Domain by using TenantName. To
// accomplish that, the ProjectID will need to be provided as the TenantID
// option.
TenantID string `json:"tenantId,omitempty"`
TenantName string `json:"tenantName,omitempty"`
// AllowReauth should be set to true if you grant permission for Gophercloud to
// cache your credentials in memory, and to allow Gophercloud to attempt to
// re-authenticate automatically if/when your token expires. If you set it to
// false, it will not cache these settings, but re-authentication will not be
// possible. This setting defaults to false.
//
// NOTE: The reauth function will try to re-authenticate endlessly if left
// unchecked. The way to limit the number of attempts is to provide a custom
// HTTP client to the provider client and provide a transport that implements
// the RoundTripper interface and stores the number of failed retries. For an
// example of this, see here:
// https://github.com/rackspace/rack/blob/1.0.0/auth/clients.go#L311
AllowReauth bool `json:"-"`
// TokenID allows users to authenticate (possibly as another user) with an
// authentication token ID.
TokenID string `json:"-"`
// Scope determines the scoping of the authentication request.
Scope *AuthScope `json:"-"`
// Authentication through Application Credentials requires supplying name, project and secret
// For project we can use TenantID
ApplicationCredentialID string `json:"-"`
ApplicationCredentialName string `json:"-"`
ApplicationCredentialSecret string `json:"-"`
}
// AuthScope allows a created token to be limited to a specific domain or project.
type AuthScope struct {
ProjectID string
ProjectName string
DomainID string
DomainName string
}
// ToTokenV2CreateMap allows AuthOptions to satisfy the AuthOptionsBuilder
// interface in the v2 tokens package
func (opts AuthOptions) ToTokenV2CreateMap() (map[string]interface{}, error) {
// Populate the request map.
authMap := make(map[string]interface{})
if opts.Username != "" {
if opts.Password != "" {
authMap["passwordCredentials"] = map[string]interface{}{
"username": opts.Username,
"password": opts.Password,
}
} else {
return nil, ErrMissingInput{Argument: "Password"}
}
} else if opts.TokenID != "" {
authMap["token"] = map[string]interface{}{
"id": opts.TokenID,
}
} else {
return nil, ErrMissingInput{Argument: "Username"}
}
if opts.TenantID != "" {
authMap["tenantId"] = opts.TenantID
}
if opts.TenantName != "" {
authMap["tenantName"] = opts.TenantName
}
return map[string]interface{}{"auth": authMap}, nil
}
func (opts *AuthOptions) ToTokenV3CreateMap(scope map[string]interface{}) (map[string]interface{}, error) {
type domainReq struct {
ID *string `json:"id,omitempty"`
Name *string `json:"name,omitempty"`
}
type projectReq struct {
Domain *domainReq `json:"domain,omitempty"`
Name *string `json:"name,omitempty"`
ID *string `json:"id,omitempty"`
}
type userReq struct {
ID *string `json:"id,omitempty"`
Name *string `json:"name,omitempty"`
Password string `json:"password,omitempty"`
Domain *domainReq `json:"domain,omitempty"`
}
type passwordReq struct {
User userReq `json:"user"`
}
type tokenReq struct {
ID string `json:"id"`
}
type applicationCredentialReq struct {
ID *string `json:"id,omitempty"`
Name *string `json:"name,omitempty"`
User *userReq `json:"user,omitempty"`
Secret *string `json:"secret,omitempty"`
}
type identityReq struct {
Methods []string `json:"methods"`
Password *passwordReq `json:"password,omitempty"`
Token *tokenReq `json:"token,omitempty"`
ApplicationCredential *applicationCredentialReq `json:"application_credential,omitempty"`
}
type authReq struct {
Identity identityReq `json:"identity"`
}
type request struct {
Auth authReq `json:"auth"`
}
// Populate the request structure based on the provided arguments. Create and return an error
// if insufficient or incompatible information is present.
var req request
var userRequest userReq
if opts.Password == "" {
if opts.TokenID != "" {
// Because we aren't using password authentication, it's an error to also provide any of the user-based authentication
// parameters.
if opts.Username != "" {
return nil, ErrUsernameWithToken{}
}
if opts.UserID != "" {
return nil, ErrUserIDWithToken{}
}
if opts.DomainID != "" {
return nil, ErrDomainIDWithToken{}
}
if opts.DomainName != "" {
return nil, ErrDomainNameWithToken{}
}
// Configure the request for Token authentication.
req.Auth.Identity.Methods = []string{"token"}
req.Auth.Identity.Token = &tokenReq{
ID: opts.TokenID,
}
} else if opts.ApplicationCredentialID != "" {
// Configure the request for ApplicationCredentialID authentication.
// https://github.com/openstack/keystoneauth/blob/stable/rocky/keystoneauth1/identity/v3/application_credential.py#L48-L67
// There are three kinds of possible application_credential requests
// 1. application_credential id + secret
// 2. application_credential name + secret + user_id
// 3. application_credential name + secret + username + domain_id / domain_name
if opts.ApplicationCredentialSecret == "" {
return nil, ErrAppCredMissingSecret{}
}
req.Auth.Identity.Methods = []string{"application_credential"}
req.Auth.Identity.ApplicationCredential = &applicationCredentialReq{
ID: &opts.ApplicationCredentialID,
Secret: &opts.ApplicationCredentialSecret,
}
} else if opts.ApplicationCredentialName != "" {
if opts.ApplicationCredentialSecret == "" {
return nil, ErrAppCredMissingSecret{}
}
// make sure that only one of DomainName or DomainID were provided
if opts.DomainID == "" && opts.DomainName == "" {
return nil, ErrDomainIDOrDomainName{}
}
req.Auth.Identity.Methods = []string{"application_credential"}
if opts.DomainID != "" {
userRequest = userReq{
Name: &opts.Username,
Domain: &domainReq{ID: &opts.DomainID},
}
} else if opts.DomainName != "" {
userRequest = userReq{
Name: &opts.Username,
Domain: &domainReq{Name: &opts.DomainName},
}
}
req.Auth.Identity.ApplicationCredential = &applicationCredentialReq{
Name: &opts.ApplicationCredentialName,
User: &userRequest,
Secret: &opts.ApplicationCredentialSecret,
}
} else {
// If no password or token ID or ApplicationCredential are available, authentication can't continue.
return nil, ErrMissingPassword{}
}
} else {
// Password authentication.
req.Auth.Identity.Methods = []string{"password"}
// At least one of Username and UserID must be specified.
if opts.Username == "" && opts.UserID == "" {
return nil, ErrUsernameOrUserID{}
}
if opts.Username != "" {
// If Username is provided, UserID may not be provided.
if opts.UserID != "" {
return nil, ErrUsernameOrUserID{}
}
// Either DomainID or DomainName must also be specified.
if opts.DomainID == "" && opts.DomainName == "" {
return nil, ErrDomainIDOrDomainName{}
}
if opts.DomainID != "" {
if opts.DomainName != "" {
return nil, ErrDomainIDOrDomainName{}
}
// Configure the request for Username and Password authentication with a DomainID.
req.Auth.Identity.Password = &passwordReq{
User: userReq{
Name: &opts.Username,
Password: opts.Password,
Domain: &domainReq{ID: &opts.DomainID},
},
}
}
if opts.DomainName != "" {
// Configure the request for Username and Password authentication with a DomainName.
req.Auth.Identity.Password = &passwordReq{
User: userReq{
Name: &opts.Username,
Password: opts.Password,
Domain: &domainReq{Name: &opts.DomainName},
},
}
}
}
if opts.UserID != "" {
// If UserID is specified, neither DomainID nor DomainName may be.
if opts.DomainID != "" {
return nil, ErrDomainIDWithUserID{}
}
if opts.DomainName != "" {
return nil, ErrDomainNameWithUserID{}
}
// Configure the request for UserID and Password authentication.
req.Auth.Identity.Password = &passwordReq{
User: userReq{ID: &opts.UserID, Password: opts.Password},
}
}
}
b, err := BuildRequestBody(req, "")
if err != nil {
return nil, err
}
if len(scope) != 0 {
b["auth"].(map[string]interface{})["scope"] = scope
}
return b, nil
}
func (opts *AuthOptions) ToTokenV3ScopeMap() (map[string]interface{}, error) {
// For backwards compatibility.
// If AuthOptions.Scope was not set, try to determine it.
// This works well for common scenarios.
if opts.Scope == nil {
opts.Scope = new(AuthScope)
if opts.TenantID != "" {
opts.Scope.ProjectID = opts.TenantID
} else {
if opts.TenantName != "" {
opts.Scope.ProjectName = opts.TenantName
opts.Scope.DomainID = opts.DomainID
opts.Scope.DomainName = opts.DomainName
}
}
}
if opts.Scope.ProjectName != "" {
// ProjectName provided: either DomainID or DomainName must also be supplied.
// ProjectID may not be supplied.
if opts.Scope.DomainID == "" && opts.Scope.DomainName == "" {
return nil, ErrScopeDomainIDOrDomainName{}
}
if opts.Scope.ProjectID != "" {
return nil, ErrScopeProjectIDOrProjectName{}
}
if opts.Scope.DomainID != "" {
// ProjectName + DomainID
return map[string]interface{}{
"project": map[string]interface{}{
"name": &opts.Scope.ProjectName,
"domain": map[string]interface{}{"id": &opts.Scope.DomainID},
},
}, nil
}
if opts.Scope.DomainName != "" {
// ProjectName + DomainName
return map[string]interface{}{
"project": map[string]interface{}{
"name": &opts.Scope.ProjectName,
"domain": map[string]interface{}{"name": &opts.Scope.DomainName},
},
}, nil
}
} else if opts.Scope.ProjectID != "" {
// ProjectID provided. ProjectName, DomainID, and DomainName may not be provided.
if opts.Scope.DomainID != "" {
return nil, ErrScopeProjectIDAlone{}
}
if opts.Scope.DomainName != "" {
return nil, ErrScopeProjectIDAlone{}
}
// ProjectID
return map[string]interface{}{
"project": map[string]interface{}{
"id": &opts.Scope.ProjectID,
},
}, nil
} else if opts.Scope.DomainID != "" {
// DomainID provided. ProjectID, ProjectName, and DomainName may not be provided.
if opts.Scope.DomainName != "" {
return nil, ErrScopeDomainIDOrDomainName{}
}
// DomainID
return map[string]interface{}{
"domain": map[string]interface{}{
"id": &opts.Scope.DomainID,
},
}, nil
} else if opts.Scope.DomainName != "" {
// DomainName
return map[string]interface{}{
"domain": map[string]interface{}{
"name": &opts.Scope.DomainName,
},
}, nil
}
return nil, nil
}
func (opts AuthOptions) CanReauth() bool {
return opts.AllowReauth
}

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/*
Package gophercloud provides a multi-vendor interface to OpenStack-compatible
clouds. The library has a three-level hierarchy: providers, services, and
resources.
Authenticating with Providers
Provider structs represent the cloud providers that offer and manage a
collection of services. You will generally want to create one Provider
client per OpenStack cloud.
Use your OpenStack credentials to create a Provider client. The
IdentityEndpoint is typically refered to as "auth_url" or "OS_AUTH_URL" in
information provided by the cloud operator. Additionally, the cloud may refer to
TenantID or TenantName as project_id and project_name. Credentials are
specified like so:
opts := gophercloud.AuthOptions{
IdentityEndpoint: "https://openstack.example.com:5000/v2.0",
Username: "{username}",
Password: "{password}",
TenantID: "{tenant_id}",
}
provider, err := openstack.AuthenticatedClient(opts)
You may also use the openstack.AuthOptionsFromEnv() helper function. This
function reads in standard environment variables frequently found in an
OpenStack `openrc` file. Again note that Gophercloud currently uses "tenant"
instead of "project".
opts, err := openstack.AuthOptionsFromEnv()
provider, err := openstack.AuthenticatedClient(opts)
Service Clients
Service structs are specific to a provider and handle all of the logic and
operations for a particular OpenStack service. Examples of services include:
Compute, Object Storage, Block Storage. In order to define one, you need to
pass in the parent provider, like so:
opts := gophercloud.EndpointOpts{Region: "RegionOne"}
client := openstack.NewComputeV2(provider, opts)
Resources
Resource structs are the domain models that services make use of in order
to work with and represent the state of API resources:
server, err := servers.Get(client, "{serverId}").Extract()
Intermediate Result structs are returned for API operations, which allow
generic access to the HTTP headers, response body, and any errors associated
with the network transaction. To turn a result into a usable resource struct,
you must call the Extract method which is chained to the response, or an
Extract function from an applicable extension:
result := servers.Get(client, "{serverId}")
// Attempt to extract the disk configuration from the OS-DCF disk config
// extension:
config, err := diskconfig.ExtractGet(result)
All requests that enumerate a collection return a Pager struct that is used to
iterate through the results one page at a time. Use the EachPage method on that
Pager to handle each successive Page in a closure, then use the appropriate
extraction method from that request's package to interpret that Page as a slice
of results:
err := servers.List(client, nil).EachPage(func (page pagination.Page) (bool, error) {
s, err := servers.ExtractServers(page)
if err != nil {
return false, err
}
// Handle the []servers.Server slice.
// Return "false" or an error to prematurely stop fetching new pages.
return true, nil
})
If you want to obtain the entire collection of pages without doing any
intermediary processing on each page, you can use the AllPages method:
allPages, err := servers.List(client, nil).AllPages()
allServers, err := servers.ExtractServers(allPages)
This top-level package contains utility functions and data types that are used
throughout the provider and service packages. Of particular note for end users
are the AuthOptions and EndpointOpts structs.
*/
package gophercloud

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package gophercloud
// Availability indicates to whom a specific service endpoint is accessible:
// the internet at large, internal networks only, or only to administrators.
// Different identity services use different terminology for these. Identity v2
// lists them as different kinds of URLs within the service catalog ("adminURL",
// "internalURL", and "publicURL"), while v3 lists them as "Interfaces" in an
// endpoint's response.
type Availability string
const (
// AvailabilityAdmin indicates that an endpoint is only available to
// administrators.
AvailabilityAdmin Availability = "admin"
// AvailabilityPublic indicates that an endpoint is available to everyone on
// the internet.
AvailabilityPublic Availability = "public"
// AvailabilityInternal indicates that an endpoint is only available within
// the cluster's internal network.
AvailabilityInternal Availability = "internal"
)
// EndpointOpts specifies search criteria used by queries against an
// OpenStack service catalog. The options must contain enough information to
// unambiguously identify one, and only one, endpoint within the catalog.
//
// Usually, these are passed to service client factory functions in a provider
// package, like "openstack.NewComputeV2()".
type EndpointOpts struct {
// Type [required] is the service type for the client (e.g., "compute",
// "object-store"). Generally, this will be supplied by the service client
// function, but a user-given value will be honored if provided.
Type string
// Name [optional] is the service name for the client (e.g., "nova") as it
// appears in the service catalog. Services can have the same Type but a
// different Name, which is why both Type and Name are sometimes needed.
Name string
// Region [required] is the geographic region in which the endpoint resides,
// generally specifying which datacenter should house your resources.
// Required only for services that span multiple regions.
Region string
// Availability [optional] is the visibility of the endpoint to be returned.
// Valid types include the constants AvailabilityPublic, AvailabilityInternal,
// or AvailabilityAdmin from this package.
//
// Availability is not required, and defaults to AvailabilityPublic. Not all
// providers or services offer all Availability options.
Availability Availability
}
/*
EndpointLocator is an internal function to be used by provider implementations.
It provides an implementation that locates a single endpoint from a service
catalog for a specific ProviderClient based on user-provided EndpointOpts. The
provider then uses it to discover related ServiceClients.
*/
type EndpointLocator func(EndpointOpts) (string, error)
// ApplyDefaults is an internal method to be used by provider implementations.
//
// It sets EndpointOpts fields if not already set, including a default type.
// Currently, EndpointOpts.Availability defaults to the public endpoint.
func (eo *EndpointOpts) ApplyDefaults(t string) {
if eo.Type == "" {
eo.Type = t
}
if eo.Availability == "" {
eo.Availability = AvailabilityPublic
}
}

460
vendor/github.com/gophercloud/gophercloud/errors.go generated vendored Normal file
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package gophercloud
import (
"fmt"
"strings"
)
// BaseError is an error type that all other error types embed.
type BaseError struct {
DefaultErrString string
Info string
}
func (e BaseError) Error() string {
e.DefaultErrString = "An error occurred while executing a Gophercloud request."
return e.choseErrString()
}
func (e BaseError) choseErrString() string {
if e.Info != "" {
return e.Info
}
return e.DefaultErrString
}
// ErrMissingInput is the error when input is required in a particular
// situation but not provided by the user
type ErrMissingInput struct {
BaseError
Argument string
}
func (e ErrMissingInput) Error() string {
e.DefaultErrString = fmt.Sprintf("Missing input for argument [%s]", e.Argument)
return e.choseErrString()
}
// ErrInvalidInput is an error type used for most non-HTTP Gophercloud errors.
type ErrInvalidInput struct {
ErrMissingInput
Value interface{}
}
func (e ErrInvalidInput) Error() string {
e.DefaultErrString = fmt.Sprintf("Invalid input provided for argument [%s]: [%+v]", e.Argument, e.Value)
return e.choseErrString()
}
// ErrMissingEnvironmentVariable is the error when environment variable is required
// in a particular situation but not provided by the user
type ErrMissingEnvironmentVariable struct {
BaseError
EnvironmentVariable string
}
func (e ErrMissingEnvironmentVariable) Error() string {
e.DefaultErrString = fmt.Sprintf("Missing environment variable [%s]", e.EnvironmentVariable)
return e.choseErrString()
}
// ErrMissingAnyoneOfEnvironmentVariables is the error when anyone of the environment variables
// is required in a particular situation but not provided by the user
type ErrMissingAnyoneOfEnvironmentVariables struct {
BaseError
EnvironmentVariables []string
}
func (e ErrMissingAnyoneOfEnvironmentVariables) Error() string {
e.DefaultErrString = fmt.Sprintf(
"Missing one of the following environment variables [%s]",
strings.Join(e.EnvironmentVariables, ", "),
)
return e.choseErrString()
}
// ErrUnexpectedResponseCode is returned by the Request method when a response code other than
// those listed in OkCodes is encountered.
type ErrUnexpectedResponseCode struct {
BaseError
URL string
Method string
Expected []int
Actual int
Body []byte
}
func (e ErrUnexpectedResponseCode) Error() string {
e.DefaultErrString = fmt.Sprintf(
"Expected HTTP response code %v when accessing [%s %s], but got %d instead\n%s",
e.Expected, e.Method, e.URL, e.Actual, e.Body,
)
return e.choseErrString()
}
// ErrDefault400 is the default error type returned on a 400 HTTP response code.
type ErrDefault400 struct {
ErrUnexpectedResponseCode
}
// ErrDefault401 is the default error type returned on a 401 HTTP response code.
type ErrDefault401 struct {
ErrUnexpectedResponseCode
}
// ErrDefault403 is the default error type returned on a 403 HTTP response code.
type ErrDefault403 struct {
ErrUnexpectedResponseCode
}
// ErrDefault404 is the default error type returned on a 404 HTTP response code.
type ErrDefault404 struct {
ErrUnexpectedResponseCode
}
// ErrDefault405 is the default error type returned on a 405 HTTP response code.
type ErrDefault405 struct {
ErrUnexpectedResponseCode
}
// ErrDefault408 is the default error type returned on a 408 HTTP response code.
type ErrDefault408 struct {
ErrUnexpectedResponseCode
}
// ErrDefault429 is the default error type returned on a 429 HTTP response code.
type ErrDefault429 struct {
ErrUnexpectedResponseCode
}
// ErrDefault500 is the default error type returned on a 500 HTTP response code.
type ErrDefault500 struct {
ErrUnexpectedResponseCode
}
// ErrDefault503 is the default error type returned on a 503 HTTP response code.
type ErrDefault503 struct {
ErrUnexpectedResponseCode
}
func (e ErrDefault400) Error() string {
e.DefaultErrString = fmt.Sprintf(
"Bad request with: [%s %s], error message: %s",
e.Method, e.URL, e.Body,
)
return e.choseErrString()
}
func (e ErrDefault401) Error() string {
return "Authentication failed"
}
func (e ErrDefault403) Error() string {
e.DefaultErrString = fmt.Sprintf(
"Request forbidden: [%s %s], error message: %s",
e.Method, e.URL, e.Body,
)
return e.choseErrString()
}
func (e ErrDefault404) Error() string {
return "Resource not found"
}
func (e ErrDefault405) Error() string {
return "Method not allowed"
}
func (e ErrDefault408) Error() string {
return "The server timed out waiting for the request"
}
func (e ErrDefault429) Error() string {
return "Too many requests have been sent in a given amount of time. Pause" +
" requests, wait up to one minute, and try again."
}
func (e ErrDefault500) Error() string {
return "Internal Server Error"
}
func (e ErrDefault503) Error() string {
return "The service is currently unable to handle the request due to a temporary" +
" overloading or maintenance. This is a temporary condition. Try again later."
}
// Err400er is the interface resource error types implement to override the error message
// from a 400 error.
type Err400er interface {
Error400(ErrUnexpectedResponseCode) error
}
// Err401er is the interface resource error types implement to override the error message
// from a 401 error.
type Err401er interface {
Error401(ErrUnexpectedResponseCode) error
}
// Err403er is the interface resource error types implement to override the error message
// from a 403 error.
type Err403er interface {
Error403(ErrUnexpectedResponseCode) error
}
// Err404er is the interface resource error types implement to override the error message
// from a 404 error.
type Err404er interface {
Error404(ErrUnexpectedResponseCode) error
}
// Err405er is the interface resource error types implement to override the error message
// from a 405 error.
type Err405er interface {
Error405(ErrUnexpectedResponseCode) error
}
// Err408er is the interface resource error types implement to override the error message
// from a 408 error.
type Err408er interface {
Error408(ErrUnexpectedResponseCode) error
}
// Err429er is the interface resource error types implement to override the error message
// from a 429 error.
type Err429er interface {
Error429(ErrUnexpectedResponseCode) error
}
// Err500er is the interface resource error types implement to override the error message
// from a 500 error.
type Err500er interface {
Error500(ErrUnexpectedResponseCode) error
}
// Err503er is the interface resource error types implement to override the error message
// from a 503 error.
type Err503er interface {
Error503(ErrUnexpectedResponseCode) error
}
// ErrTimeOut is the error type returned when an operations times out.
type ErrTimeOut struct {
BaseError
}
func (e ErrTimeOut) Error() string {
e.DefaultErrString = "A time out occurred"
return e.choseErrString()
}
// ErrUnableToReauthenticate is the error type returned when reauthentication fails.
type ErrUnableToReauthenticate struct {
BaseError
ErrOriginal error
}
func (e ErrUnableToReauthenticate) Error() string {
e.DefaultErrString = fmt.Sprintf("Unable to re-authenticate: %s", e.ErrOriginal)
return e.choseErrString()
}
// ErrErrorAfterReauthentication is the error type returned when reauthentication
// succeeds, but an error occurs afterword (usually an HTTP error).
type ErrErrorAfterReauthentication struct {
BaseError
ErrOriginal error
}
func (e ErrErrorAfterReauthentication) Error() string {
e.DefaultErrString = fmt.Sprintf("Successfully re-authenticated, but got error executing request: %s", e.ErrOriginal)
return e.choseErrString()
}
// ErrServiceNotFound is returned when no service in a service catalog matches
// the provided EndpointOpts. This is generally returned by provider service
// factory methods like "NewComputeV2()" and can mean that a service is not
// enabled for your account.
type ErrServiceNotFound struct {
BaseError
}
func (e ErrServiceNotFound) Error() string {
e.DefaultErrString = "No suitable service could be found in the service catalog."
return e.choseErrString()
}
// ErrEndpointNotFound is returned when no available endpoints match the
// provided EndpointOpts. This is also generally returned by provider service
// factory methods, and usually indicates that a region was specified
// incorrectly.
type ErrEndpointNotFound struct {
BaseError
}
func (e ErrEndpointNotFound) Error() string {
e.DefaultErrString = "No suitable endpoint could be found in the service catalog."
return e.choseErrString()
}
// ErrResourceNotFound is the error when trying to retrieve a resource's
// ID by name and the resource doesn't exist.
type ErrResourceNotFound struct {
BaseError
Name string
ResourceType string
}
func (e ErrResourceNotFound) Error() string {
e.DefaultErrString = fmt.Sprintf("Unable to find %s with name %s", e.ResourceType, e.Name)
return e.choseErrString()
}
// ErrMultipleResourcesFound is the error when trying to retrieve a resource's
// ID by name and multiple resources have the user-provided name.
type ErrMultipleResourcesFound struct {
BaseError
Name string
Count int
ResourceType string
}
func (e ErrMultipleResourcesFound) Error() string {
e.DefaultErrString = fmt.Sprintf("Found %d %ss matching %s", e.Count, e.ResourceType, e.Name)
return e.choseErrString()
}
// ErrUnexpectedType is the error when an unexpected type is encountered
type ErrUnexpectedType struct {
BaseError
Expected string
Actual string
}
func (e ErrUnexpectedType) Error() string {
e.DefaultErrString = fmt.Sprintf("Expected %s but got %s", e.Expected, e.Actual)
return e.choseErrString()
}
func unacceptedAttributeErr(attribute string) string {
return fmt.Sprintf("The base Identity V3 API does not accept authentication by %s", attribute)
}
func redundantWithTokenErr(attribute string) string {
return fmt.Sprintf("%s may not be provided when authenticating with a TokenID", attribute)
}
func redundantWithUserID(attribute string) string {
return fmt.Sprintf("%s may not be provided when authenticating with a UserID", attribute)
}
// ErrAPIKeyProvided indicates that an APIKey was provided but can't be used.
type ErrAPIKeyProvided struct{ BaseError }
func (e ErrAPIKeyProvided) Error() string {
return unacceptedAttributeErr("APIKey")
}
// ErrTenantIDProvided indicates that a TenantID was provided but can't be used.
type ErrTenantIDProvided struct{ BaseError }
func (e ErrTenantIDProvided) Error() string {
return unacceptedAttributeErr("TenantID")
}
// ErrTenantNameProvided indicates that a TenantName was provided but can't be used.
type ErrTenantNameProvided struct{ BaseError }
func (e ErrTenantNameProvided) Error() string {
return unacceptedAttributeErr("TenantName")
}
// ErrUsernameWithToken indicates that a Username was provided, but token authentication is being used instead.
type ErrUsernameWithToken struct{ BaseError }
func (e ErrUsernameWithToken) Error() string {
return redundantWithTokenErr("Username")
}
// ErrUserIDWithToken indicates that a UserID was provided, but token authentication is being used instead.
type ErrUserIDWithToken struct{ BaseError }
func (e ErrUserIDWithToken) Error() string {
return redundantWithTokenErr("UserID")
}
// ErrDomainIDWithToken indicates that a DomainID was provided, but token authentication is being used instead.
type ErrDomainIDWithToken struct{ BaseError }
func (e ErrDomainIDWithToken) Error() string {
return redundantWithTokenErr("DomainID")
}
// ErrDomainNameWithToken indicates that a DomainName was provided, but token authentication is being used instead.s
type ErrDomainNameWithToken struct{ BaseError }
func (e ErrDomainNameWithToken) Error() string {
return redundantWithTokenErr("DomainName")
}
// ErrUsernameOrUserID indicates that neither username nor userID are specified, or both are at once.
type ErrUsernameOrUserID struct{ BaseError }
func (e ErrUsernameOrUserID) Error() string {
return "Exactly one of Username and UserID must be provided for password authentication"
}
// ErrDomainIDWithUserID indicates that a DomainID was provided, but unnecessary because a UserID is being used.
type ErrDomainIDWithUserID struct{ BaseError }
func (e ErrDomainIDWithUserID) Error() string {
return redundantWithUserID("DomainID")
}
// ErrDomainNameWithUserID indicates that a DomainName was provided, but unnecessary because a UserID is being used.
type ErrDomainNameWithUserID struct{ BaseError }
func (e ErrDomainNameWithUserID) Error() string {
return redundantWithUserID("DomainName")
}
// ErrDomainIDOrDomainName indicates that a username was provided, but no domain to scope it.
// It may also indicate that both a DomainID and a DomainName were provided at once.
type ErrDomainIDOrDomainName struct{ BaseError }
func (e ErrDomainIDOrDomainName) Error() string {
return "You must provide exactly one of DomainID or DomainName to authenticate by Username"
}
// ErrMissingPassword indicates that no password was provided and no token is available.
type ErrMissingPassword struct{ BaseError }
func (e ErrMissingPassword) Error() string {
return "You must provide a password to authenticate"
}
// ErrScopeDomainIDOrDomainName indicates that a domain ID or Name was required in a Scope, but not present.
type ErrScopeDomainIDOrDomainName struct{ BaseError }
func (e ErrScopeDomainIDOrDomainName) Error() string {
return "You must provide exactly one of DomainID or DomainName in a Scope with ProjectName"
}
// ErrScopeProjectIDOrProjectName indicates that both a ProjectID and a ProjectName were provided in a Scope.
type ErrScopeProjectIDOrProjectName struct{ BaseError }
func (e ErrScopeProjectIDOrProjectName) Error() string {
return "You must provide at most one of ProjectID or ProjectName in a Scope"
}
// ErrScopeProjectIDAlone indicates that a ProjectID was provided with other constraints in a Scope.
type ErrScopeProjectIDAlone struct{ BaseError }
func (e ErrScopeProjectIDAlone) Error() string {
return "ProjectID must be supplied alone in a Scope"
}
// ErrScopeEmpty indicates that no credentials were provided in a Scope.
type ErrScopeEmpty struct{ BaseError }
func (e ErrScopeEmpty) Error() string {
return "You must provide either a Project or Domain in a Scope"
}
// ErrAppCredMissingSecret indicates that no Application Credential Secret was provided with Application Credential ID or Name
type ErrAppCredMissingSecret struct{ BaseError }
func (e ErrAppCredMissingSecret) Error() string {
return "You must provide an Application Credential Secret"
}

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vendor/github.com/gophercloud/gophercloud/openstack/auth_env.go generated vendored Normal file
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package openstack
import (
"os"
"github.com/gophercloud/gophercloud"
)
var nilOptions = gophercloud.AuthOptions{}
/*
AuthOptionsFromEnv fills out an identity.AuthOptions structure with the
settings found on the various OpenStack OS_* environment variables.
The following variables provide sources of truth: OS_AUTH_URL, OS_USERNAME,
OS_PASSWORD, OS_TENANT_ID, and OS_TENANT_NAME.
Of these, OS_USERNAME, OS_PASSWORD, and OS_AUTH_URL must have settings,
or an error will result. OS_TENANT_ID, OS_TENANT_NAME, OS_PROJECT_ID, and
OS_PROJECT_NAME are optional.
OS_TENANT_ID and OS_TENANT_NAME are mutually exclusive to OS_PROJECT_ID and
OS_PROJECT_NAME. If OS_PROJECT_ID and OS_PROJECT_NAME are set, they will
still be referred as "tenant" in Gophercloud.
To use this function, first set the OS_* environment variables (for example,
by sourcing an `openrc` file), then:
opts, err := openstack.AuthOptionsFromEnv()
provider, err := openstack.AuthenticatedClient(opts)
*/
func AuthOptionsFromEnv() (gophercloud.AuthOptions, error) {
authURL := os.Getenv("OS_AUTH_URL")
username := os.Getenv("OS_USERNAME")
userID := os.Getenv("OS_USERID")
password := os.Getenv("OS_PASSWORD")
tenantID := os.Getenv("OS_TENANT_ID")
tenantName := os.Getenv("OS_TENANT_NAME")
domainID := os.Getenv("OS_DOMAIN_ID")
domainName := os.Getenv("OS_DOMAIN_NAME")
applicationCredentialID := os.Getenv("OS_APPLICATION_CREDENTIAL_ID")
applicationCredentialName := os.Getenv("OS_APPLICATION_CREDENTIAL_NAME")
applicationCredentialSecret := os.Getenv("OS_APPLICATION_CREDENTIAL_SECRET")
// If OS_PROJECT_ID is set, overwrite tenantID with the value.
if v := os.Getenv("OS_PROJECT_ID"); v != "" {
tenantID = v
}
// If OS_PROJECT_NAME is set, overwrite tenantName with the value.
if v := os.Getenv("OS_PROJECT_NAME"); v != "" {
tenantName = v
}
if authURL == "" {
err := gophercloud.ErrMissingEnvironmentVariable{
EnvironmentVariable: "OS_AUTH_URL",
}
return nilOptions, err
}
if username == "" && userID == "" {
err := gophercloud.ErrMissingAnyoneOfEnvironmentVariables{
EnvironmentVariables: []string{"OS_USERNAME", "OS_USERID"},
}
return nilOptions, err
}
if password == "" && applicationCredentialID == "" && applicationCredentialName == "" {
err := gophercloud.ErrMissingEnvironmentVariable{
EnvironmentVariable: "OS_PASSWORD",
}
return nilOptions, err
}
if (applicationCredentialID != "" || applicationCredentialName != "") && applicationCredentialSecret == "" {
err := gophercloud.ErrMissingEnvironmentVariable{
EnvironmentVariable: "OS_APPLICATION_CREDENTIAL_SECRET",
}
return nilOptions, err
}
ao := gophercloud.AuthOptions{
IdentityEndpoint: authURL,
UserID: userID,
Username: username,
Password: password,
TenantID: tenantID,
TenantName: tenantName,
DomainID: domainID,
DomainName: domainName,
ApplicationCredentialID: applicationCredentialID,
ApplicationCredentialName: applicationCredentialName,
ApplicationCredentialSecret: applicationCredentialSecret,
}
return ao, nil
}

427
vendor/github.com/gophercloud/gophercloud/openstack/client.go generated vendored Normal file
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package openstack
import (
"fmt"
"reflect"
"github.com/gophercloud/gophercloud"
tokens2 "github.com/gophercloud/gophercloud/openstack/identity/v2/tokens"
tokens3 "github.com/gophercloud/gophercloud/openstack/identity/v3/tokens"
"github.com/gophercloud/gophercloud/openstack/utils"
)
const (
// v2 represents Keystone v2.
// It should never increase beyond 2.0.
v2 = "v2.0"
// v3 represents Keystone v3.
// The version can be anything from v3 to v3.x.
v3 = "v3"
)
/*
NewClient prepares an unauthenticated ProviderClient instance.
Most users will probably prefer using the AuthenticatedClient function
instead.
This is useful if you wish to explicitly control the version of the identity
service that's used for authentication explicitly, for example.
A basic example of using this would be:
ao, err := openstack.AuthOptionsFromEnv()
provider, err := openstack.NewClient(ao.IdentityEndpoint)
client, err := openstack.NewIdentityV3(provider, gophercloud.EndpointOpts{})
*/
func NewClient(endpoint string) (*gophercloud.ProviderClient, error) {
base, err := utils.BaseEndpoint(endpoint)
if err != nil {
return nil, err
}
endpoint = gophercloud.NormalizeURL(endpoint)
base = gophercloud.NormalizeURL(base)
p := new(gophercloud.ProviderClient)
p.IdentityBase = base
p.IdentityEndpoint = endpoint
p.UseTokenLock()
return p, nil
}
/*
AuthenticatedClient logs in to an OpenStack cloud found at the identity endpoint
specified by the options, acquires a token, and returns a Provider Client
instance that's ready to operate.
If the full path to a versioned identity endpoint was specified (example:
http://example.com:5000/v3), that path will be used as the endpoint to query.
If a versionless endpoint was specified (example: http://example.com:5000/),
the endpoint will be queried to determine which versions of the identity service
are available, then chooses the most recent or most supported version.
Example:
ao, err := openstack.AuthOptionsFromEnv()
provider, err := openstack.AuthenticatedClient(ao)
client, err := openstack.NewNetworkV2(client, gophercloud.EndpointOpts{
Region: os.Getenv("OS_REGION_NAME"),
})
*/
func AuthenticatedClient(options gophercloud.AuthOptions) (*gophercloud.ProviderClient, error) {
client, err := NewClient(options.IdentityEndpoint)
if err != nil {
return nil, err
}
err = Authenticate(client, options)
if err != nil {
return nil, err
}
return client, nil
}
// Authenticate or re-authenticate against the most recent identity service
// supported at the provided endpoint.
func Authenticate(client *gophercloud.ProviderClient, options gophercloud.AuthOptions) error {
versions := []*utils.Version{
{ID: v2, Priority: 20, Suffix: "/v2.0/"},
{ID: v3, Priority: 30, Suffix: "/v3/"},
}
chosen, endpoint, err := utils.ChooseVersion(client, versions)
if err != nil {
return err
}
switch chosen.ID {
case v2:
return v2auth(client, endpoint, options, gophercloud.EndpointOpts{})
case v3:
return v3auth(client, endpoint, &options, gophercloud.EndpointOpts{})
default:
// The switch statement must be out of date from the versions list.
return fmt.Errorf("Unrecognized identity version: %s", chosen.ID)
}
}
// AuthenticateV2 explicitly authenticates against the identity v2 endpoint.
func AuthenticateV2(client *gophercloud.ProviderClient, options gophercloud.AuthOptions, eo gophercloud.EndpointOpts) error {
return v2auth(client, "", options, eo)
}
func v2auth(client *gophercloud.ProviderClient, endpoint string, options gophercloud.AuthOptions, eo gophercloud.EndpointOpts) error {
v2Client, err := NewIdentityV2(client, eo)
if err != nil {
return err
}
if endpoint != "" {
v2Client.Endpoint = endpoint
}
v2Opts := tokens2.AuthOptions{
IdentityEndpoint: options.IdentityEndpoint,
Username: options.Username,
Password: options.Password,
TenantID: options.TenantID,
TenantName: options.TenantName,
AllowReauth: options.AllowReauth,
TokenID: options.TokenID,
}
result := tokens2.Create(v2Client, v2Opts)
token, err := result.ExtractToken()
if err != nil {
return err
}
catalog, err := result.ExtractServiceCatalog()
if err != nil {
return err
}
if options.AllowReauth {
// here we're creating a throw-away client (tac). it's a copy of the user's provider client, but
// with the token and reauth func zeroed out. combined with setting `AllowReauth` to `false`,
// this should retry authentication only once
tac := *client
tac.ReauthFunc = nil
tac.TokenID = ""
tao := options
tao.AllowReauth = false
client.ReauthFunc = func() error {
err := v2auth(&tac, endpoint, tao, eo)
if err != nil {
return err
}
client.TokenID = tac.TokenID
return nil
}
}
client.TokenID = token.ID
client.EndpointLocator = func(opts gophercloud.EndpointOpts) (string, error) {
return V2EndpointURL(catalog, opts)
}
return nil
}
// AuthenticateV3 explicitly authenticates against the identity v3 service.
func AuthenticateV3(client *gophercloud.ProviderClient, options tokens3.AuthOptionsBuilder, eo gophercloud.EndpointOpts) error {
return v3auth(client, "", options, eo)
}
func v3auth(client *gophercloud.ProviderClient, endpoint string, opts tokens3.AuthOptionsBuilder, eo gophercloud.EndpointOpts) error {
// Override the generated service endpoint with the one returned by the version endpoint.
v3Client, err := NewIdentityV3(client, eo)
if err != nil {
return err
}
if endpoint != "" {
v3Client.Endpoint = endpoint
}
result := tokens3.Create(v3Client, opts)
token, err := result.ExtractToken()
if err != nil {
return err
}
catalog, err := result.ExtractServiceCatalog()
if err != nil {
return err
}
client.TokenID = token.ID
if opts.CanReauth() {
// here we're creating a throw-away client (tac). it's a copy of the user's provider client, but
// with the token and reauth func zeroed out. combined with setting `AllowReauth` to `false`,
// this should retry authentication only once
tac := *client
tac.ReauthFunc = nil
tac.TokenID = ""
var tao tokens3.AuthOptionsBuilder
switch ot := opts.(type) {
case *gophercloud.AuthOptions:
o := *ot
o.AllowReauth = false
tao = &o
case *tokens3.AuthOptions:
o := *ot
o.AllowReauth = false
tao = &o
default:
tao = opts
}
client.ReauthFunc = func() error {
err := v3auth(&tac, endpoint, tao, eo)
if err != nil {
return err
}
client.TokenID = tac.TokenID
return nil
}
}
client.EndpointLocator = func(opts gophercloud.EndpointOpts) (string, error) {
return V3EndpointURL(catalog, opts)
}
return nil
}
// NewIdentityV2 creates a ServiceClient that may be used to interact with the
// v2 identity service.
func NewIdentityV2(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
endpoint := client.IdentityBase + "v2.0/"
clientType := "identity"
var err error
if !reflect.DeepEqual(eo, gophercloud.EndpointOpts{}) {
eo.ApplyDefaults(clientType)
endpoint, err = client.EndpointLocator(eo)
if err != nil {
return nil, err
}
}
return &gophercloud.ServiceClient{
ProviderClient: client,
Endpoint: endpoint,
Type: clientType,
}, nil
}
// NewIdentityV3 creates a ServiceClient that may be used to access the v3
// identity service.
func NewIdentityV3(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
endpoint := client.IdentityBase + "v3/"
clientType := "identity"
var err error
if !reflect.DeepEqual(eo, gophercloud.EndpointOpts{}) {
eo.ApplyDefaults(clientType)
endpoint, err = client.EndpointLocator(eo)
if err != nil {
return nil, err
}
}
// Ensure endpoint still has a suffix of v3.
// This is because EndpointLocator might have found a versionless
// endpoint or the published endpoint is still /v2.0. In both
// cases, we need to fix the endpoint to point to /v3.
base, err := utils.BaseEndpoint(endpoint)
if err != nil {
return nil, err
}
base = gophercloud.NormalizeURL(base)
endpoint = base + "v3/"
return &gophercloud.ServiceClient{
ProviderClient: client,
Endpoint: endpoint,
Type: clientType,
}, nil
}
func initClientOpts(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts, clientType string) (*gophercloud.ServiceClient, error) {
sc := new(gophercloud.ServiceClient)
eo.ApplyDefaults(clientType)
url, err := client.EndpointLocator(eo)
if err != nil {
return sc, err
}
sc.ProviderClient = client
sc.Endpoint = url
sc.Type = clientType
return sc, nil
}
// NewObjectStorageV1 creates a ServiceClient that may be used with the v1
// object storage package.
func NewObjectStorageV1(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
return initClientOpts(client, eo, "object-store")
}
// NewComputeV2 creates a ServiceClient that may be used with the v2 compute
// package.
func NewComputeV2(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
return initClientOpts(client, eo, "compute")
}
// NewNetworkV2 creates a ServiceClient that may be used with the v2 network
// package.
func NewNetworkV2(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
sc, err := initClientOpts(client, eo, "network")
sc.ResourceBase = sc.Endpoint + "v2.0/"
return sc, err
}
// NewBlockStorageV1 creates a ServiceClient that may be used to access the v1
// block storage service.
func NewBlockStorageV1(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
return initClientOpts(client, eo, "volume")
}
// NewBlockStorageV2 creates a ServiceClient that may be used to access the v2
// block storage service.
func NewBlockStorageV2(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
return initClientOpts(client, eo, "volumev2")
}
// NewBlockStorageV3 creates a ServiceClient that may be used to access the v3 block storage service.
func NewBlockStorageV3(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
return initClientOpts(client, eo, "volumev3")
}
// NewSharedFileSystemV2 creates a ServiceClient that may be used to access the v2 shared file system service.
func NewSharedFileSystemV2(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
return initClientOpts(client, eo, "sharev2")
}
// NewCDNV1 creates a ServiceClient that may be used to access the OpenStack v1
// CDN service.
func NewCDNV1(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
return initClientOpts(client, eo, "cdn")
}
// NewOrchestrationV1 creates a ServiceClient that may be used to access the v1
// orchestration service.
func NewOrchestrationV1(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
return initClientOpts(client, eo, "orchestration")
}
// NewDBV1 creates a ServiceClient that may be used to access the v1 DB service.
func NewDBV1(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
return initClientOpts(client, eo, "database")
}
// NewDNSV2 creates a ServiceClient that may be used to access the v2 DNS
// service.
func NewDNSV2(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
sc, err := initClientOpts(client, eo, "dns")
sc.ResourceBase = sc.Endpoint + "v2/"
return sc, err
}
// NewImageServiceV2 creates a ServiceClient that may be used to access the v2
// image service.
func NewImageServiceV2(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
sc, err := initClientOpts(client, eo, "image")
sc.ResourceBase = sc.Endpoint + "v2/"
return sc, err
}
// NewLoadBalancerV2 creates a ServiceClient that may be used to access the v2
// load balancer service.
func NewLoadBalancerV2(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
sc, err := initClientOpts(client, eo, "load-balancer")
sc.ResourceBase = sc.Endpoint + "v2.0/"
return sc, err
}
// NewClusteringV1 creates a ServiceClient that may be used with the v1 clustering
// package.
func NewClusteringV1(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
return initClientOpts(client, eo, "clustering")
}
// NewMessagingV2 creates a ServiceClient that may be used with the v2 messaging
// service.
func NewMessagingV2(client *gophercloud.ProviderClient, clientID string, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
sc, err := initClientOpts(client, eo, "messaging")
sc.MoreHeaders = map[string]string{"Client-ID": clientID}
return sc, err
}
// NewContainerV1 creates a ServiceClient that may be used with v1 container package
func NewContainerV1(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
return initClientOpts(client, eo, "container")
}
// NewKeyManagerV1 creates a ServiceClient that may be used with the v1 key
// manager service.
func NewKeyManagerV1(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
sc, err := initClientOpts(client, eo, "key-manager")
sc.ResourceBase = sc.Endpoint + "v1/"
return sc, err
}
// NewContainerInfraV1 creates a ServiceClient that may be used with the v1 container infra management
// package.
func NewContainerInfraV1(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
return initClientOpts(client, eo, "container-infra")
}
// NewWorkflowV2 creates a ServiceClient that may be used with the v2 workflow management package.
func NewWorkflowV2(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
return initClientOpts(client, eo, "workflowv2")
}

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/*
Package openstack contains resources for the individual OpenStack projects
supported in Gophercloud. It also includes functions to authenticate to an
OpenStack cloud and for provisioning various service-level clients.
Example of Creating a Service Client
ao, err := openstack.AuthOptionsFromEnv()
provider, err := openstack.AuthenticatedClient(ao)
client, err := openstack.NewNetworkV2(client, gophercloud.EndpointOpts{
Region: os.Getenv("OS_REGION_NAME"),
})
*/
package openstack

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package openstack
import (
"github.com/gophercloud/gophercloud"
tokens2 "github.com/gophercloud/gophercloud/openstack/identity/v2/tokens"
tokens3 "github.com/gophercloud/gophercloud/openstack/identity/v3/tokens"
)
/*
V2EndpointURL discovers the endpoint URL for a specific service from a
ServiceCatalog acquired during the v2 identity service.
The specified EndpointOpts are used to identify a unique, unambiguous endpoint
to return. It's an error both when multiple endpoints match the provided
criteria and when none do. The minimum that can be specified is a Type, but you
will also often need to specify a Name and/or a Region depending on what's
available on your OpenStack deployment.
*/
func V2EndpointURL(catalog *tokens2.ServiceCatalog, opts gophercloud.EndpointOpts) (string, error) {
// Extract Endpoints from the catalog entries that match the requested Type, Name if provided, and Region if provided.
var endpoints = make([]tokens2.Endpoint, 0, 1)
for _, entry := range catalog.Entries {
if (entry.Type == opts.Type) && (opts.Name == "" || entry.Name == opts.Name) {
for _, endpoint := range entry.Endpoints {
if opts.Region == "" || endpoint.Region == opts.Region {
endpoints = append(endpoints, endpoint)
}
}
}
}
// Report an error if the options were ambiguous.
if len(endpoints) > 1 {
err := &ErrMultipleMatchingEndpointsV2{}
err.Endpoints = endpoints
return "", err
}
// Extract the appropriate URL from the matching Endpoint.
for _, endpoint := range endpoints {
switch opts.Availability {
case gophercloud.AvailabilityPublic:
return gophercloud.NormalizeURL(endpoint.PublicURL), nil
case gophercloud.AvailabilityInternal:
return gophercloud.NormalizeURL(endpoint.InternalURL), nil
case gophercloud.AvailabilityAdmin:
return gophercloud.NormalizeURL(endpoint.AdminURL), nil
default:
err := &ErrInvalidAvailabilityProvided{}
err.Argument = "Availability"
err.Value = opts.Availability
return "", err
}
}
// Report an error if there were no matching endpoints.
err := &gophercloud.ErrEndpointNotFound{}
return "", err
}
/*
V3EndpointURL discovers the endpoint URL for a specific service from a Catalog
acquired during the v3 identity service.
The specified EndpointOpts are used to identify a unique, unambiguous endpoint
to return. It's an error both when multiple endpoints match the provided
criteria and when none do. The minimum that can be specified is a Type, but you
will also often need to specify a Name and/or a Region depending on what's
available on your OpenStack deployment.
*/
func V3EndpointURL(catalog *tokens3.ServiceCatalog, opts gophercloud.EndpointOpts) (string, error) {
// Extract Endpoints from the catalog entries that match the requested Type, Interface,
// Name if provided, and Region if provided.
var endpoints = make([]tokens3.Endpoint, 0, 1)
for _, entry := range catalog.Entries {
if (entry.Type == opts.Type) && (opts.Name == "" || entry.Name == opts.Name) {
for _, endpoint := range entry.Endpoints {
if opts.Availability != gophercloud.AvailabilityAdmin &&
opts.Availability != gophercloud.AvailabilityPublic &&
opts.Availability != gophercloud.AvailabilityInternal {
err := &ErrInvalidAvailabilityProvided{}
err.Argument = "Availability"
err.Value = opts.Availability
return "", err
}
if (opts.Availability == gophercloud.Availability(endpoint.Interface)) &&
(opts.Region == "" || endpoint.Region == opts.Region || endpoint.RegionID == opts.Region) {
endpoints = append(endpoints, endpoint)
}
}
}
}
// Report an error if the options were ambiguous.
if len(endpoints) > 1 {
return "", ErrMultipleMatchingEndpointsV3{Endpoints: endpoints}
}
// Extract the URL from the matching Endpoint.
for _, endpoint := range endpoints {
return gophercloud.NormalizeURL(endpoint.URL), nil
}
// Report an error if there were no matching endpoints.
err := &gophercloud.ErrEndpointNotFound{}
return "", err
}

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package openstack
import (
"fmt"
"github.com/gophercloud/gophercloud"
tokens2 "github.com/gophercloud/gophercloud/openstack/identity/v2/tokens"
tokens3 "github.com/gophercloud/gophercloud/openstack/identity/v3/tokens"
)
// ErrEndpointNotFound is the error when no suitable endpoint can be found
// in the user's catalog
type ErrEndpointNotFound struct{ gophercloud.BaseError }
func (e ErrEndpointNotFound) Error() string {
return "No suitable endpoint could be found in the service catalog."
}
// ErrInvalidAvailabilityProvided is the error when an invalid endpoint
// availability is provided
type ErrInvalidAvailabilityProvided struct{ gophercloud.ErrInvalidInput }
func (e ErrInvalidAvailabilityProvided) Error() string {
return fmt.Sprintf("Unexpected availability in endpoint query: %s", e.Value)
}
// ErrMultipleMatchingEndpointsV2 is the error when more than one endpoint
// for the given options is found in the v2 catalog
type ErrMultipleMatchingEndpointsV2 struct {
gophercloud.BaseError
Endpoints []tokens2.Endpoint
}
func (e ErrMultipleMatchingEndpointsV2) Error() string {
return fmt.Sprintf("Discovered %d matching endpoints: %#v", len(e.Endpoints), e.Endpoints)
}
// ErrMultipleMatchingEndpointsV3 is the error when more than one endpoint
// for the given options is found in the v3 catalog
type ErrMultipleMatchingEndpointsV3 struct {
gophercloud.BaseError
Endpoints []tokens3.Endpoint
}
func (e ErrMultipleMatchingEndpointsV3) Error() string {
return fmt.Sprintf("Discovered %d matching endpoints: %#v", len(e.Endpoints), e.Endpoints)
}
// ErrNoAuthURL is the error when the OS_AUTH_URL environment variable is not
// found
type ErrNoAuthURL struct{ gophercloud.ErrInvalidInput }
func (e ErrNoAuthURL) Error() string {
return "Environment variable OS_AUTH_URL needs to be set."
}
// ErrNoUsername is the error when the OS_USERNAME environment variable is not
// found
type ErrNoUsername struct{ gophercloud.ErrInvalidInput }
func (e ErrNoUsername) Error() string {
return "Environment variable OS_USERNAME needs to be set."
}
// ErrNoPassword is the error when the OS_PASSWORD environment variable is not
// found
type ErrNoPassword struct{ gophercloud.ErrInvalidInput }
func (e ErrNoPassword) Error() string {
return "Environment variable OS_PASSWORD needs to be set."
}

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/*
Package tenants provides information and interaction with the
tenants API resource for the OpenStack Identity service.
See http://developer.openstack.org/api-ref-identity-v2.html#identity-auth-v2
and http://developer.openstack.org/api-ref-identity-v2.html#admin-tenants
for more information.
Example to List Tenants
listOpts := tenants.ListOpts{
Limit: 2,
}
allPages, err := tenants.List(identityClient, listOpts).AllPages()
if err != nil {
panic(err)
}
allTenants, err := tenants.ExtractTenants(allPages)
if err != nil {
panic(err)
}
for _, tenant := range allTenants {
fmt.Printf("%+v\n", tenant)
}
Example to Create a Tenant
createOpts := tenants.CreateOpts{
Name: "tenant_name",
Description: "this is a tenant",
Enabled: gophercloud.Enabled,
}
tenant, err := tenants.Create(identityClient, createOpts).Extract()
if err != nil {
panic(err)
}
Example to Update a Tenant
tenantID := "e6db6ed6277c461a853458589063b295"
updateOpts := tenants.UpdateOpts{
Description: "this is a new description",
Enabled: gophercloud.Disabled,
}
tenant, err := tenants.Update(identityClient, tenantID, updateOpts).Extract()
if err != nil {
panic(err)
}
Example to Delete a Tenant
tenantID := "e6db6ed6277c461a853458589063b295"
err := tenants.Delete(identitYClient, tenantID).ExtractErr()
if err != nil {
panic(err)
}
*/
package tenants

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package tenants
import (
"github.com/gophercloud/gophercloud"
"github.com/gophercloud/gophercloud/pagination"
)
// ListOpts filters the Tenants that are returned by the List call.
type ListOpts struct {
// Marker is the ID of the last Tenant on the previous page.
Marker string `q:"marker"`
// Limit specifies the page size.
Limit int `q:"limit"`
}
// List enumerates the Tenants to which the current token has access.
func List(client *gophercloud.ServiceClient, opts *ListOpts) pagination.Pager {
url := listURL(client)
if opts != nil {
q, err := gophercloud.BuildQueryString(opts)
if err != nil {
return pagination.Pager{Err: err}
}
url += q.String()
}
return pagination.NewPager(client, url, func(r pagination.PageResult) pagination.Page {
return TenantPage{pagination.LinkedPageBase{PageResult: r}}
})
}
// CreateOpts represents the options needed when creating new tenant.
type CreateOpts struct {
// Name is the name of the tenant.
Name string `json:"name" required:"true"`
// Description is the description of the tenant.
Description string `json:"description,omitempty"`
// Enabled sets the tenant status to enabled or disabled.
Enabled *bool `json:"enabled,omitempty"`
}
// CreateOptsBuilder enables extensions to add additional parameters to the
// Create request.
type CreateOptsBuilder interface {
ToTenantCreateMap() (map[string]interface{}, error)
}
// ToTenantCreateMap assembles a request body based on the contents of
// a CreateOpts.
func (opts CreateOpts) ToTenantCreateMap() (map[string]interface{}, error) {
return gophercloud.BuildRequestBody(opts, "tenant")
}
// Create is the operation responsible for creating new tenant.
func Create(client *gophercloud.ServiceClient, opts CreateOptsBuilder) (r CreateResult) {
b, err := opts.ToTenantCreateMap()
if err != nil {
r.Err = err
return
}
_, r.Err = client.Post(createURL(client), b, &r.Body, &gophercloud.RequestOpts{
OkCodes: []int{200, 201},
})
return
}
// Get requests details on a single tenant by ID.
func Get(client *gophercloud.ServiceClient, id string) (r GetResult) {
_, r.Err = client.Get(getURL(client, id), &r.Body, nil)
return
}
// UpdateOptsBuilder allows extensions to add additional parameters to the
// Update request.
type UpdateOptsBuilder interface {
ToTenantUpdateMap() (map[string]interface{}, error)
}
// UpdateOpts specifies the base attributes that may be updated on an existing
// tenant.
type UpdateOpts struct {
// Name is the name of the tenant.
Name string `json:"name,omitempty"`
// Description is the description of the tenant.
Description string `json:"description,omitempty"`
// Enabled sets the tenant status to enabled or disabled.
Enabled *bool `json:"enabled,omitempty"`
}
// ToTenantUpdateMap formats an UpdateOpts structure into a request body.
func (opts UpdateOpts) ToTenantUpdateMap() (map[string]interface{}, error) {
return gophercloud.BuildRequestBody(opts, "tenant")
}
// Update is the operation responsible for updating exist tenants by their TenantID.
func Update(client *gophercloud.ServiceClient, id string, opts UpdateOptsBuilder) (r UpdateResult) {
b, err := opts.ToTenantUpdateMap()
if err != nil {
r.Err = err
return
}
_, r.Err = client.Put(updateURL(client, id), &b, &r.Body, &gophercloud.RequestOpts{
OkCodes: []int{200},
})
return
}
// Delete is the operation responsible for permanently deleting a tenant.
func Delete(client *gophercloud.ServiceClient, id string) (r DeleteResult) {
_, r.Err = client.Delete(deleteURL(client, id), nil)
return
}

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package tenants
import (
"github.com/gophercloud/gophercloud"
"github.com/gophercloud/gophercloud/pagination"
)
// Tenant is a grouping of users in the identity service.
type Tenant struct {
// ID is a unique identifier for this tenant.
ID string `json:"id"`
// Name is a friendlier user-facing name for this tenant.
Name string `json:"name"`
// Description is a human-readable explanation of this Tenant's purpose.
Description string `json:"description"`
// Enabled indicates whether or not a tenant is active.
Enabled bool `json:"enabled"`
}
// TenantPage is a single page of Tenant results.
type TenantPage struct {
pagination.LinkedPageBase
}
// IsEmpty determines whether or not a page of Tenants contains any results.
func (r TenantPage) IsEmpty() (bool, error) {
tenants, err := ExtractTenants(r)
return len(tenants) == 0, err
}
// NextPageURL extracts the "next" link from the tenants_links section of the result.
func (r TenantPage) NextPageURL() (string, error) {
var s struct {
Links []gophercloud.Link `json:"tenants_links"`
}
err := r.ExtractInto(&s)
if err != nil {
return "", err
}
return gophercloud.ExtractNextURL(s.Links)
}
// ExtractTenants returns a slice of Tenants contained in a single page of
// results.
func ExtractTenants(r pagination.Page) ([]Tenant, error) {
var s struct {
Tenants []Tenant `json:"tenants"`
}
err := (r.(TenantPage)).ExtractInto(&s)
return s.Tenants, err
}
type tenantResult struct {
gophercloud.Result
}
// Extract interprets any tenantResults as a Tenant.
func (r tenantResult) Extract() (*Tenant, error) {
var s struct {
Tenant *Tenant `json:"tenant"`
}
err := r.ExtractInto(&s)
return s.Tenant, err
}
// GetResult is the response from a Get request. Call its Extract method to
// interpret it as a Tenant.
type GetResult struct {
tenantResult
}
// CreateResult is the response from a Create request. Call its Extract method
// to interpret it as a Tenant.
type CreateResult struct {
tenantResult
}
// DeleteResult is the response from a Get request. Call its ExtractErr method
// to determine if the call succeeded or failed.
type DeleteResult struct {
gophercloud.ErrResult
}
// UpdateResult is the response from a Update request. Call its Extract method
// to interpret it as a Tenant.
type UpdateResult struct {
tenantResult
}

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package tenants
import "github.com/gophercloud/gophercloud"
func listURL(client *gophercloud.ServiceClient) string {
return client.ServiceURL("tenants")
}
func getURL(client *gophercloud.ServiceClient, tenantID string) string {
return client.ServiceURL("tenants", tenantID)
}
func createURL(client *gophercloud.ServiceClient) string {
return client.ServiceURL("tenants")
}
func deleteURL(client *gophercloud.ServiceClient, tenantID string) string {
return client.ServiceURL("tenants", tenantID)
}
func updateURL(client *gophercloud.ServiceClient, tenantID string) string {
return client.ServiceURL("tenants", tenantID)
}

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/*
Package tokens provides information and interaction with the token API
resource for the OpenStack Identity service.
For more information, see:
http://developer.openstack.org/api-ref-identity-v2.html#identity-auth-v2
Example to Create an Unscoped Token from a Password
authOpts := gophercloud.AuthOptions{
Username: "user",
Password: "pass"
}
token, err := tokens.Create(identityClient, authOpts).ExtractToken()
if err != nil {
panic(err)
}
Example to Create a Token from a Tenant ID and Password
authOpts := gophercloud.AuthOptions{
Username: "user",
Password: "password",
TenantID: "fc394f2ab2df4114bde39905f800dc57"
}
token, err := tokens.Create(identityClient, authOpts).ExtractToken()
if err != nil {
panic(err)
}
Example to Create a Token from a Tenant Name and Password
authOpts := gophercloud.AuthOptions{
Username: "user",
Password: "password",
TenantName: "tenantname"
}
token, err := tokens.Create(identityClient, authOpts).ExtractToken()
if err != nil {
panic(err)
}
*/
package tokens

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package tokens
import "github.com/gophercloud/gophercloud"
// PasswordCredentialsV2 represents the required options to authenticate
// with a username and password.
type PasswordCredentialsV2 struct {
Username string `json:"username" required:"true"`
Password string `json:"password" required:"true"`
}
// TokenCredentialsV2 represents the required options to authenticate
// with a token.
type TokenCredentialsV2 struct {
ID string `json:"id,omitempty" required:"true"`
}
// AuthOptionsV2 wraps a gophercloud AuthOptions in order to adhere to the
// AuthOptionsBuilder interface.
type AuthOptionsV2 struct {
PasswordCredentials *PasswordCredentialsV2 `json:"passwordCredentials,omitempty" xor:"TokenCredentials"`
// The TenantID and TenantName fields are optional for the Identity V2 API.
// Some providers allow you to specify a TenantName instead of the TenantId.
// Some require both. Your provider's authentication policies will determine
// how these fields influence authentication.
TenantID string `json:"tenantId,omitempty"`
TenantName string `json:"tenantName,omitempty"`
// TokenCredentials allows users to authenticate (possibly as another user)
// with an authentication token ID.
TokenCredentials *TokenCredentialsV2 `json:"token,omitempty" xor:"PasswordCredentials"`
}
// AuthOptionsBuilder allows extensions to add additional parameters to the
// token create request.
type AuthOptionsBuilder interface {
// ToTokenCreateMap assembles the Create request body, returning an error
// if parameters are missing or inconsistent.
ToTokenV2CreateMap() (map[string]interface{}, error)
}
// AuthOptions are the valid options for Openstack Identity v2 authentication.
// For field descriptions, see gophercloud.AuthOptions.
type AuthOptions struct {
IdentityEndpoint string `json:"-"`
Username string `json:"username,omitempty"`
Password string `json:"password,omitempty"`
TenantID string `json:"tenantId,omitempty"`
TenantName string `json:"tenantName,omitempty"`
AllowReauth bool `json:"-"`
TokenID string
}
// ToTokenV2CreateMap builds a token request body from the given AuthOptions.
func (opts AuthOptions) ToTokenV2CreateMap() (map[string]interface{}, error) {
v2Opts := AuthOptionsV2{
TenantID: opts.TenantID,
TenantName: opts.TenantName,
}
if opts.Password != "" {
v2Opts.PasswordCredentials = &PasswordCredentialsV2{
Username: opts.Username,
Password: opts.Password,
}
} else {
v2Opts.TokenCredentials = &TokenCredentialsV2{
ID: opts.TokenID,
}
}
b, err := gophercloud.BuildRequestBody(v2Opts, "auth")
if err != nil {
return nil, err
}
return b, nil
}
// Create authenticates to the identity service and attempts to acquire a Token.
// Generally, rather than interact with this call directly, end users should
// call openstack.AuthenticatedClient(), which abstracts all of the gory details
// about navigating service catalogs and such.
func Create(client *gophercloud.ServiceClient, auth AuthOptionsBuilder) (r CreateResult) {
b, err := auth.ToTokenV2CreateMap()
if err != nil {
r.Err = err
return
}
_, r.Err = client.Post(CreateURL(client), b, &r.Body, &gophercloud.RequestOpts{
OkCodes: []int{200, 203},
MoreHeaders: map[string]string{"X-Auth-Token": ""},
})
return
}
// Get validates and retrieves information for user's token.
func Get(client *gophercloud.ServiceClient, token string) (r GetResult) {
_, r.Err = client.Get(GetURL(client, token), &r.Body, &gophercloud.RequestOpts{
OkCodes: []int{200, 203},
})
return
}

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package tokens
import (
"time"
"github.com/gophercloud/gophercloud"
"github.com/gophercloud/gophercloud/openstack/identity/v2/tenants"
)
// Token provides only the most basic information related to an authentication
// token.
type Token struct {
// ID provides the primary means of identifying a user to the OpenStack API.
// OpenStack defines this field as an opaque value, so do not depend on its
// content. It is safe, however, to compare for equality.
ID string
// ExpiresAt provides a timestamp in ISO 8601 format, indicating when the
// authentication token becomes invalid. After this point in time, future
// API requests made using this authentication token will respond with
// errors. Either the caller will need to reauthenticate manually, or more
// preferably, the caller should exploit automatic re-authentication.
// See the AuthOptions structure for more details.
ExpiresAt time.Time
// Tenant provides information about the tenant to which this token grants
// access.
Tenant tenants.Tenant
}
// Role is a role for a user.
type Role struct {
Name string `json:"name"`
}
// User is an OpenStack user.
type User struct {
ID string `json:"id"`
Name string `json:"name"`
UserName string `json:"username"`
Roles []Role `json:"roles"`
}
// Endpoint represents a single API endpoint offered by a service.
// It provides the public and internal URLs, if supported, along with a region
// specifier, again if provided.
//
// The significance of the Region field will depend upon your provider.
//
// In addition, the interface offered by the service will have version
// information associated with it through the VersionId, VersionInfo, and
// VersionList fields, if provided or supported.
//
// In all cases, fields which aren't supported by the provider and service
// combined will assume a zero-value ("").
type Endpoint struct {
TenantID string `json:"tenantId"`
PublicURL string `json:"publicURL"`
InternalURL string `json:"internalURL"`
AdminURL string `json:"adminURL"`
Region string `json:"region"`
VersionID string `json:"versionId"`
VersionInfo string `json:"versionInfo"`
VersionList string `json:"versionList"`
}
// CatalogEntry provides a type-safe interface to an Identity API V2 service
// catalog listing.
//
// Each class of service, such as cloud DNS or block storage services, will have
// a single CatalogEntry representing it.
//
// Note: when looking for the desired service, try, whenever possible, to key
// off the type field. Otherwise, you'll tie the representation of the service
// to a specific provider.
type CatalogEntry struct {
// Name will contain the provider-specified name for the service.
Name string `json:"name"`
// Type will contain a type string if OpenStack defines a type for the
// service. Otherwise, for provider-specific services, the provider may assign
// their own type strings.
Type string `json:"type"`
// Endpoints will let the caller iterate over all the different endpoints that
// may exist for the service.
Endpoints []Endpoint `json:"endpoints"`
}
// ServiceCatalog provides a view into the service catalog from a previous,
// successful authentication.
type ServiceCatalog struct {
Entries []CatalogEntry
}
// CreateResult is the response from a Create request. Use ExtractToken() to
// interpret it as a Token, or ExtractServiceCatalog() to interpret it as a
// service catalog.
type CreateResult struct {
gophercloud.Result
}
// GetResult is the deferred response from a Get call, which is the same with a
// Created token. Use ExtractUser() to interpret it as a User.
type GetResult struct {
CreateResult
}
// ExtractToken returns the just-created Token from a CreateResult.
func (r CreateResult) ExtractToken() (*Token, error) {
var s struct {
Access struct {
Token struct {
Expires string `json:"expires"`
ID string `json:"id"`
Tenant tenants.Tenant `json:"tenant"`
} `json:"token"`
} `json:"access"`
}
err := r.ExtractInto(&s)
if err != nil {
return nil, err
}
expiresTs, err := time.Parse(gophercloud.RFC3339Milli, s.Access.Token.Expires)
if err != nil {
return nil, err
}
return &Token{
ID: s.Access.Token.ID,
ExpiresAt: expiresTs,
Tenant: s.Access.Token.Tenant,
}, nil
}
// ExtractServiceCatalog returns the ServiceCatalog that was generated along
// with the user's Token.
func (r CreateResult) ExtractServiceCatalog() (*ServiceCatalog, error) {
var s struct {
Access struct {
Entries []CatalogEntry `json:"serviceCatalog"`
} `json:"access"`
}
err := r.ExtractInto(&s)
return &ServiceCatalog{Entries: s.Access.Entries}, err
}
// ExtractUser returns the User from a GetResult.
func (r GetResult) ExtractUser() (*User, error) {
var s struct {
Access struct {
User User `json:"user"`
} `json:"access"`
}
err := r.ExtractInto(&s)
return &s.Access.User, err
}

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package tokens
import "github.com/gophercloud/gophercloud"
// CreateURL generates the URL used to create new Tokens.
func CreateURL(client *gophercloud.ServiceClient) string {
return client.ServiceURL("tokens")
}
// GetURL generates the URL used to Validate Tokens.
func GetURL(client *gophercloud.ServiceClient, token string) string {
return client.ServiceURL("tokens", token)
}

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/*
Package tokens provides information and interaction with the token API
resource for the OpenStack Identity service.
For more information, see:
http://developer.openstack.org/api-ref-identity-v3.html#tokens-v3
Example to Create a Token From a Username and Password
authOptions := tokens.AuthOptions{
UserID: "username",
Password: "password",
}
token, err := tokens.Create(identityClient, authOptions).ExtractToken()
if err != nil {
panic(err)
}
Example to Create a Token From a Username, Password, and Domain
authOptions := tokens.AuthOptions{
UserID: "username",
Password: "password",
DomainID: "default",
}
token, err := tokens.Create(identityClient, authOptions).ExtractToken()
if err != nil {
panic(err)
}
authOptions = tokens.AuthOptions{
UserID: "username",
Password: "password",
DomainName: "default",
}
token, err = tokens.Create(identityClient, authOptions).ExtractToken()
if err != nil {
panic(err)
}
Example to Create a Token From a Token
authOptions := tokens.AuthOptions{
TokenID: "token_id",
}
token, err := tokens.Create(identityClient, authOptions).ExtractToken()
if err != nil {
panic(err)
}
Example to Create a Token from a Username and Password with Project ID Scope
scope := tokens.Scope{
ProjectID: "0fe36e73809d46aeae6705c39077b1b3",
}
authOptions := tokens.AuthOptions{
Scope: &scope,
UserID: "username",
Password: "password",
}
token, err = tokens.Create(identityClient, authOptions).ExtractToken()
if err != nil {
panic(err)
}
Example to Create a Token from a Username and Password with Domain ID Scope
scope := tokens.Scope{
DomainID: "default",
}
authOptions := tokens.AuthOptions{
Scope: &scope,
UserID: "username",
Password: "password",
}
token, err = tokens.Create(identityClient, authOptions).ExtractToken()
if err != nil {
panic(err)
}
Example to Create a Token from a Username and Password with Project Name Scope
scope := tokens.Scope{
ProjectName: "project_name",
DomainID: "default",
}
authOptions := tokens.AuthOptions{
Scope: &scope,
UserID: "username",
Password: "password",
}
token, err = tokens.Create(identityClient, authOptions).ExtractToken()
if err != nil {
panic(err)
}
*/
package tokens

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package tokens
import "github.com/gophercloud/gophercloud"
// Scope allows a created token to be limited to a specific domain or project.
type Scope struct {
ProjectID string
ProjectName string
DomainID string
DomainName string
}
// AuthOptionsBuilder provides the ability for extensions to add additional
// parameters to AuthOptions. Extensions must satisfy all required methods.
type AuthOptionsBuilder interface {
// ToTokenV3CreateMap assembles the Create request body, returning an error
// if parameters are missing or inconsistent.
ToTokenV3CreateMap(map[string]interface{}) (map[string]interface{}, error)
ToTokenV3ScopeMap() (map[string]interface{}, error)
CanReauth() bool
}
// AuthOptions represents options for authenticating a user.
type AuthOptions struct {
// IdentityEndpoint specifies the HTTP endpoint that is required to work with
// the Identity API of the appropriate version. While it's ultimately needed
// by all of the identity services, it will often be populated by a
// provider-level function.
IdentityEndpoint string `json:"-"`
// Username is required if using Identity V2 API. Consult with your provider's
// control panel to discover your account's username. In Identity V3, either
// UserID or a combination of Username and DomainID or DomainName are needed.
Username string `json:"username,omitempty"`
UserID string `json:"id,omitempty"`
Password string `json:"password,omitempty"`
// At most one of DomainID and DomainName must be provided if using Username
// with Identity V3. Otherwise, either are optional.
DomainID string `json:"-"`
DomainName string `json:"name,omitempty"`
// AllowReauth should be set to true if you grant permission for Gophercloud
// to cache your credentials in memory, and to allow Gophercloud to attempt
// to re-authenticate automatically if/when your token expires. If you set
// it to false, it will not cache these settings, but re-authentication will
// not be possible. This setting defaults to false.
AllowReauth bool `json:"-"`
// TokenID allows users to authenticate (possibly as another user) with an
// authentication token ID.
TokenID string `json:"-"`
// Authentication through Application Credentials requires supplying name, project and secret
// For project we can use TenantID
ApplicationCredentialID string `json:"-"`
ApplicationCredentialName string `json:"-"`
ApplicationCredentialSecret string `json:"-"`
Scope Scope `json:"-"`
}
// ToTokenV3CreateMap builds a request body from AuthOptions.
func (opts *AuthOptions) ToTokenV3CreateMap(scope map[string]interface{}) (map[string]interface{}, error) {
gophercloudAuthOpts := gophercloud.AuthOptions{
Username: opts.Username,
UserID: opts.UserID,
Password: opts.Password,
DomainID: opts.DomainID,
DomainName: opts.DomainName,
AllowReauth: opts.AllowReauth,
TokenID: opts.TokenID,
ApplicationCredentialID: opts.ApplicationCredentialID,
ApplicationCredentialName: opts.ApplicationCredentialName,
ApplicationCredentialSecret: opts.ApplicationCredentialSecret,
}
return gophercloudAuthOpts.ToTokenV3CreateMap(scope)
}
// ToTokenV3CreateMap builds a scope request body from AuthOptions.
func (opts *AuthOptions) ToTokenV3ScopeMap() (map[string]interface{}, error) {
scope := gophercloud.AuthScope(opts.Scope)
gophercloudAuthOpts := gophercloud.AuthOptions{
Scope: &scope,
DomainID: opts.DomainID,
DomainName: opts.DomainName,
}
return gophercloudAuthOpts.ToTokenV3ScopeMap()
}
func (opts *AuthOptions) CanReauth() bool {
return opts.AllowReauth
}
func subjectTokenHeaders(c *gophercloud.ServiceClient, subjectToken string) map[string]string {
return map[string]string{
"X-Subject-Token": subjectToken,
}
}
// Create authenticates and either generates a new token, or changes the Scope
// of an existing token.
func Create(c *gophercloud.ServiceClient, opts AuthOptionsBuilder) (r CreateResult) {
scope, err := opts.ToTokenV3ScopeMap()
if err != nil {
r.Err = err
return
}
b, err := opts.ToTokenV3CreateMap(scope)
if err != nil {
r.Err = err
return
}
resp, err := c.Post(tokenURL(c), b, &r.Body, &gophercloud.RequestOpts{
MoreHeaders: map[string]string{"X-Auth-Token": ""},
})
r.Err = err
if resp != nil {
r.Header = resp.Header
}
return
}
// Get validates and retrieves information about another token.
func Get(c *gophercloud.ServiceClient, token string) (r GetResult) {
resp, err := c.Get(tokenURL(c), &r.Body, &gophercloud.RequestOpts{
MoreHeaders: subjectTokenHeaders(c, token),
OkCodes: []int{200, 203},
})
if resp != nil {
r.Err = err
r.Header = resp.Header
}
return
}
// Validate determines if a specified token is valid or not.
func Validate(c *gophercloud.ServiceClient, token string) (bool, error) {
resp, err := c.Head(tokenURL(c), &gophercloud.RequestOpts{
MoreHeaders: subjectTokenHeaders(c, token),
OkCodes: []int{200, 204, 404},
})
if err != nil {
return false, err
}
return resp.StatusCode == 200 || resp.StatusCode == 204, nil
}
// Revoke immediately makes specified token invalid.
func Revoke(c *gophercloud.ServiceClient, token string) (r RevokeResult) {
_, r.Err = c.Delete(tokenURL(c), &gophercloud.RequestOpts{
MoreHeaders: subjectTokenHeaders(c, token),
})
return
}

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package tokens
import (
"time"
"github.com/gophercloud/gophercloud"
)
// Endpoint represents a single API endpoint offered by a service.
// It matches either a public, internal or admin URL.
// If supported, it contains a region specifier, again if provided.
// The significance of the Region field will depend upon your provider.
type Endpoint struct {
ID string `json:"id"`
Region string `json:"region"`
RegionID string `json:"region_id"`
Interface string `json:"interface"`
URL string `json:"url"`
}
// CatalogEntry provides a type-safe interface to an Identity API V3 service
// catalog listing. Each class of service, such as cloud DNS or block storage
// services, could have multiple CatalogEntry representing it (one by interface
// type, e.g public, admin or internal).
//
// Note: when looking for the desired service, try, whenever possible, to key
// off the type field. Otherwise, you'll tie the representation of the service
// to a specific provider.
type CatalogEntry struct {
// Service ID
ID string `json:"id"`
// Name will contain the provider-specified name for the service.
Name string `json:"name"`
// Type will contain a type string if OpenStack defines a type for the
// service. Otherwise, for provider-specific services, the provider may
// assign their own type strings.
Type string `json:"type"`
// Endpoints will let the caller iterate over all the different endpoints that
// may exist for the service.
Endpoints []Endpoint `json:"endpoints"`
}
// ServiceCatalog provides a view into the service catalog from a previous,
// successful authentication.
type ServiceCatalog struct {
Entries []CatalogEntry `json:"catalog"`
}
// Domain provides information about the domain to which this token grants
// access.
type Domain struct {
ID string `json:"id"`
Name string `json:"name"`
}
// User represents a user resource that exists in the Identity Service.
type User struct {
Domain Domain `json:"domain"`
ID string `json:"id"`
Name string `json:"name"`
}
// Role provides information about roles to which User is authorized.
type Role struct {
ID string `json:"id"`
Name string `json:"name"`
}
// Project provides information about project to which User is authorized.
type Project struct {
Domain Domain `json:"domain"`
ID string `json:"id"`
Name string `json:"name"`
}
// commonResult is the response from a request. A commonResult has various
// methods which can be used to extract different details about the result.
type commonResult struct {
gophercloud.Result
}
// Extract is a shortcut for ExtractToken.
// This function is deprecated and still present for backward compatibility.
func (r commonResult) Extract() (*Token, error) {
return r.ExtractToken()
}
// ExtractToken interprets a commonResult as a Token.
func (r commonResult) ExtractToken() (*Token, error) {
var s Token
err := r.ExtractInto(&s)
if err != nil {
return nil, err
}
// Parse the token itself from the stored headers.
s.ID = r.Header.Get("X-Subject-Token")
return &s, err
}
// ExtractServiceCatalog returns the ServiceCatalog that was generated along
// with the user's Token.
func (r commonResult) ExtractServiceCatalog() (*ServiceCatalog, error) {
var s ServiceCatalog
err := r.ExtractInto(&s)
return &s, err
}
// ExtractUser returns the User that is the owner of the Token.
func (r commonResult) ExtractUser() (*User, error) {
var s struct {
User *User `json:"user"`
}
err := r.ExtractInto(&s)
return s.User, err
}
// ExtractRoles returns Roles to which User is authorized.
func (r commonResult) ExtractRoles() ([]Role, error) {
var s struct {
Roles []Role `json:"roles"`
}
err := r.ExtractInto(&s)
return s.Roles, err
}
// ExtractProject returns Project to which User is authorized.
func (r commonResult) ExtractProject() (*Project, error) {
var s struct {
Project *Project `json:"project"`
}
err := r.ExtractInto(&s)
return s.Project, err
}
// CreateResult is the response from a Create request. Use ExtractToken()
// to interpret it as a Token, or ExtractServiceCatalog() to interpret it
// as a service catalog.
type CreateResult struct {
commonResult
}
// GetResult is the response from a Get request. Use ExtractToken()
// to interpret it as a Token, or ExtractServiceCatalog() to interpret it
// as a service catalog.
type GetResult struct {
commonResult
}
// RevokeResult is response from a Revoke request.
type RevokeResult struct {
commonResult
}
// Token is a string that grants a user access to a controlled set of services
// in an OpenStack provider. Each Token is valid for a set length of time.
type Token struct {
// ID is the issued token.
ID string `json:"id"`
// ExpiresAt is the timestamp at which this token will no longer be accepted.
ExpiresAt time.Time `json:"expires_at"`
}
func (r commonResult) ExtractInto(v interface{}) error {
return r.ExtractIntoStructPtr(v, "token")
}

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vendor/github.com/gophercloud/gophercloud/openstack/identity/v3/tokens/urls.go generated vendored Normal file
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package tokens
import "github.com/gophercloud/gophercloud"
func tokenURL(c *gophercloud.ServiceClient) string {
return c.ServiceURL("auth", "tokens")
}

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vendor/github.com/gophercloud/gophercloud/openstack/utils/base_endpoint.go generated vendored Normal file
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package utils
import (
"net/url"
"regexp"
"strings"
)
// BaseEndpoint will return a URL without the /vX.Y
// portion of the URL.
func BaseEndpoint(endpoint string) (string, error) {
u, err := url.Parse(endpoint)
if err != nil {
return "", err
}
u.RawQuery, u.Fragment = "", ""
path := u.Path
versionRe := regexp.MustCompile("v[0-9.]+/?")
if version := versionRe.FindString(path); version != "" {
versionIndex := strings.Index(path, version)
u.Path = path[:versionIndex]
}
return u.String(), nil
}

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vendor/github.com/gophercloud/gophercloud/openstack/utils/choose_version.go generated vendored Normal file
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package utils
import (
"fmt"
"strings"
"github.com/gophercloud/gophercloud"
)
// Version is a supported API version, corresponding to a vN package within the appropriate service.
type Version struct {
ID string
Suffix string
Priority int
}
var goodStatus = map[string]bool{
"current": true,
"supported": true,
"stable": true,
}
// ChooseVersion queries the base endpoint of an API to choose the most recent non-experimental alternative from a service's
// published versions.
// It returns the highest-Priority Version among the alternatives that are provided, as well as its corresponding endpoint.
func ChooseVersion(client *gophercloud.ProviderClient, recognized []*Version) (*Version, string, error) {
type linkResp struct {
Href string `json:"href"`
Rel string `json:"rel"`
}
type valueResp struct {
ID string `json:"id"`
Status string `json:"status"`
Links []linkResp `json:"links"`
}
type versionsResp struct {
Values []valueResp `json:"values"`
}
type response struct {
Versions versionsResp `json:"versions"`
}
normalize := func(endpoint string) string {
if !strings.HasSuffix(endpoint, "/") {
return endpoint + "/"
}
return endpoint
}
identityEndpoint := normalize(client.IdentityEndpoint)
// If a full endpoint is specified, check version suffixes for a match first.
for _, v := range recognized {
if strings.HasSuffix(identityEndpoint, v.Suffix) {
return v, identityEndpoint, nil
}
}
var resp response
_, err := client.Request("GET", client.IdentityBase, &gophercloud.RequestOpts{
JSONResponse: &resp,
OkCodes: []int{200, 300},
})
if err != nil {
return nil, "", err
}
var highest *Version
var endpoint string
for _, value := range resp.Versions.Values {
href := ""
for _, link := range value.Links {
if link.Rel == "self" {
href = normalize(link.Href)
}
}
for _, version := range recognized {
if strings.Contains(value.ID, version.ID) {
// Prefer a version that exactly matches the provided endpoint.
if href == identityEndpoint {
if href == "" {
return nil, "", fmt.Errorf("Endpoint missing in version %s response from %s", value.ID, client.IdentityBase)
}
return version, href, nil
}
// Otherwise, find the highest-priority version with a whitelisted status.
if goodStatus[strings.ToLower(value.Status)] {
if highest == nil || version.Priority > highest.Priority {
highest = version
endpoint = href
}
}
}
}
}
if highest == nil {
return nil, "", fmt.Errorf("No supported version available from endpoint %s", client.IdentityBase)
}
if endpoint == "" {
return nil, "", fmt.Errorf("Endpoint missing in version %s response from %s", highest.ID, client.IdentityBase)
}
return highest, endpoint, nil
}

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vendor/github.com/gophercloud/gophercloud/pagination/http.go generated vendored Normal file
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package pagination
import (
"encoding/json"
"io/ioutil"
"net/http"
"net/url"
"strings"
"github.com/gophercloud/gophercloud"
)
// PageResult stores the HTTP response that returned the current page of results.
type PageResult struct {
gophercloud.Result
url.URL
}
// PageResultFrom parses an HTTP response as JSON and returns a PageResult containing the
// results, interpreting it as JSON if the content type indicates.
func PageResultFrom(resp *http.Response) (PageResult, error) {
var parsedBody interface{}
defer resp.Body.Close()
rawBody, err := ioutil.ReadAll(resp.Body)
if err != nil {
return PageResult{}, err
}
if strings.HasPrefix(resp.Header.Get("Content-Type"), "application/json") {
err = json.Unmarshal(rawBody, &parsedBody)
if err != nil {
return PageResult{}, err
}
} else {
parsedBody = rawBody
}
return PageResultFromParsed(resp, parsedBody), err
}
// PageResultFromParsed constructs a PageResult from an HTTP response that has already had its
// body parsed as JSON (and closed).
func PageResultFromParsed(resp *http.Response, body interface{}) PageResult {
return PageResult{
Result: gophercloud.Result{
Body: body,
Header: resp.Header,
},
URL: *resp.Request.URL,
}
}
// Request performs an HTTP request and extracts the http.Response from the result.
func Request(client *gophercloud.ServiceClient, headers map[string]string, url string) (*http.Response, error) {
return client.Get(url, nil, &gophercloud.RequestOpts{
MoreHeaders: headers,
OkCodes: []int{200, 204, 300},
})
}

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vendor/github.com/gophercloud/gophercloud/pagination/linked.go generated vendored Normal file
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package pagination
import (
"fmt"
"reflect"
"github.com/gophercloud/gophercloud"
)
// LinkedPageBase may be embedded to implement a page that provides navigational "Next" and "Previous" links within its result.
type LinkedPageBase struct {
PageResult
// LinkPath lists the keys that should be traversed within a response to arrive at the "next" pointer.
// If any link along the path is missing, an empty URL will be returned.
// If any link results in an unexpected value type, an error will be returned.
// When left as "nil", []string{"links", "next"} will be used as a default.
LinkPath []string
}
// NextPageURL extracts the pagination structure from a JSON response and returns the "next" link, if one is present.
// It assumes that the links are available in a "links" element of the top-level response object.
// If this is not the case, override NextPageURL on your result type.
func (current LinkedPageBase) NextPageURL() (string, error) {
var path []string
var key string
if current.LinkPath == nil {
path = []string{"links", "next"}
} else {
path = current.LinkPath
}
submap, ok := current.Body.(map[string]interface{})
if !ok {
err := gophercloud.ErrUnexpectedType{}
err.Expected = "map[string]interface{}"
err.Actual = fmt.Sprintf("%v", reflect.TypeOf(current.Body))
return "", err
}
for {
key, path = path[0], path[1:len(path)]
value, ok := submap[key]
if !ok {
return "", nil
}
if len(path) > 0 {
submap, ok = value.(map[string]interface{})
if !ok {
err := gophercloud.ErrUnexpectedType{}
err.Expected = "map[string]interface{}"
err.Actual = fmt.Sprintf("%v", reflect.TypeOf(value))
return "", err
}
} else {
if value == nil {
// Actual null element.
return "", nil
}
url, ok := value.(string)
if !ok {
err := gophercloud.ErrUnexpectedType{}
err.Expected = "string"
err.Actual = fmt.Sprintf("%v", reflect.TypeOf(value))
return "", err
}
return url, nil
}
}
}
// IsEmpty satisifies the IsEmpty method of the Page interface
func (current LinkedPageBase) IsEmpty() (bool, error) {
if b, ok := current.Body.([]interface{}); ok {
return len(b) == 0, nil
}
err := gophercloud.ErrUnexpectedType{}
err.Expected = "[]interface{}"
err.Actual = fmt.Sprintf("%v", reflect.TypeOf(current.Body))
return true, err
}
// GetBody returns the linked page's body. This method is needed to satisfy the
// Page interface.
func (current LinkedPageBase) GetBody() interface{} {
return current.Body
}

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vendor/github.com/gophercloud/gophercloud/pagination/marker.go generated vendored Normal file
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package pagination
import (
"fmt"
"reflect"
"github.com/gophercloud/gophercloud"
)
// MarkerPage is a stricter Page interface that describes additional functionality required for use with NewMarkerPager.
// For convenience, embed the MarkedPageBase struct.
type MarkerPage interface {
Page
// LastMarker returns the last "marker" value on this page.
LastMarker() (string, error)
}
// MarkerPageBase is a page in a collection that's paginated by "limit" and "marker" query parameters.
type MarkerPageBase struct {
PageResult
// Owner is a reference to the embedding struct.
Owner MarkerPage
}
// NextPageURL generates the URL for the page of results after this one.
func (current MarkerPageBase) NextPageURL() (string, error) {
currentURL := current.URL
mark, err := current.Owner.LastMarker()
if err != nil {
return "", err
}
q := currentURL.Query()
q.Set("marker", mark)
currentURL.RawQuery = q.Encode()
return currentURL.String(), nil
}
// IsEmpty satisifies the IsEmpty method of the Page interface
func (current MarkerPageBase) IsEmpty() (bool, error) {
if b, ok := current.Body.([]interface{}); ok {
return len(b) == 0, nil
}
err := gophercloud.ErrUnexpectedType{}
err.Expected = "[]interface{}"
err.Actual = fmt.Sprintf("%v", reflect.TypeOf(current.Body))
return true, err
}
// GetBody returns the linked page's body. This method is needed to satisfy the
// Page interface.
func (current MarkerPageBase) GetBody() interface{} {
return current.Body
}

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vendor/github.com/gophercloud/gophercloud/pagination/pager.go generated vendored Normal file
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package pagination
import (
"errors"
"fmt"
"net/http"
"reflect"
"strings"
"github.com/gophercloud/gophercloud"
)
var (
// ErrPageNotAvailable is returned from a Pager when a next or previous page is requested, but does not exist.
ErrPageNotAvailable = errors.New("The requested page does not exist.")
)
// Page must be satisfied by the result type of any resource collection.
// It allows clients to interact with the resource uniformly, regardless of whether or not or how it's paginated.
// Generally, rather than implementing this interface directly, implementors should embed one of the concrete PageBase structs,
// instead.
// Depending on the pagination strategy of a particular resource, there may be an additional subinterface that the result type
// will need to implement.
type Page interface {
// NextPageURL generates the URL for the page of data that follows this collection.
// Return "" if no such page exists.
NextPageURL() (string, error)
// IsEmpty returns true if this Page has no items in it.
IsEmpty() (bool, error)
// GetBody returns the Page Body. This is used in the `AllPages` method.
GetBody() interface{}
}
// Pager knows how to advance through a specific resource collection, one page at a time.
type Pager struct {
client *gophercloud.ServiceClient
initialURL string
createPage func(r PageResult) Page
firstPage Page
Err error
// Headers supplies additional HTTP headers to populate on each paged request.
Headers map[string]string
}
// NewPager constructs a manually-configured pager.
// Supply the URL for the first page, a function that requests a specific page given a URL, and a function that counts a page.
func NewPager(client *gophercloud.ServiceClient, initialURL string, createPage func(r PageResult) Page) Pager {
return Pager{
client: client,
initialURL: initialURL,
createPage: createPage,
}
}
// WithPageCreator returns a new Pager that substitutes a different page creation function. This is
// useful for overriding List functions in delegation.
func (p Pager) WithPageCreator(createPage func(r PageResult) Page) Pager {
return Pager{
client: p.client,
initialURL: p.initialURL,
createPage: createPage,
}
}
func (p Pager) fetchNextPage(url string) (Page, error) {
resp, err := Request(p.client, p.Headers, url)
if err != nil {
return nil, err
}
remembered, err := PageResultFrom(resp)
if err != nil {
return nil, err
}
return p.createPage(remembered), nil
}
// EachPage iterates over each page returned by a Pager, yielding one at a time to a handler function.
// Return "false" from the handler to prematurely stop iterating.
func (p Pager) EachPage(handler func(Page) (bool, error)) error {
if p.Err != nil {
return p.Err
}
currentURL := p.initialURL
for {
var currentPage Page
// if first page has already been fetched, no need to fetch it again
if p.firstPage != nil {
currentPage = p.firstPage
p.firstPage = nil
} else {
var err error
currentPage, err = p.fetchNextPage(currentURL)
if err != nil {
return err
}
}
empty, err := currentPage.IsEmpty()
if err != nil {
return err
}
if empty {
return nil
}
ok, err := handler(currentPage)
if err != nil {
return err
}
if !ok {
return nil
}
currentURL, err = currentPage.NextPageURL()
if err != nil {
return err
}
if currentURL == "" {
return nil
}
}
}
// AllPages returns all the pages from a `List` operation in a single page,
// allowing the user to retrieve all the pages at once.
func (p Pager) AllPages() (Page, error) {
// pagesSlice holds all the pages until they get converted into as Page Body.
var pagesSlice []interface{}
// body will contain the final concatenated Page body.
var body reflect.Value
// Grab a first page to ascertain the page body type.
firstPage, err := p.fetchNextPage(p.initialURL)
if err != nil {
return nil, err
}
// Store the page type so we can use reflection to create a new mega-page of
// that type.
pageType := reflect.TypeOf(firstPage)
// if it's a single page, just return the firstPage (first page)
if _, found := pageType.FieldByName("SinglePageBase"); found {
return firstPage, nil
}
// store the first page to avoid getting it twice
p.firstPage = firstPage
// Switch on the page body type. Recognized types are `map[string]interface{}`,
// `[]byte`, and `[]interface{}`.
switch pb := firstPage.GetBody().(type) {
case map[string]interface{}:
// key is the map key for the page body if the body type is `map[string]interface{}`.
var key string
// Iterate over the pages to concatenate the bodies.
err = p.EachPage(func(page Page) (bool, error) {
b := page.GetBody().(map[string]interface{})
for k, v := range b {
// If it's a linked page, we don't want the `links`, we want the other one.
if !strings.HasSuffix(k, "links") {
// check the field's type. we only want []interface{} (which is really []map[string]interface{})
switch vt := v.(type) {
case []interface{}:
key = k
pagesSlice = append(pagesSlice, vt...)
}
}
}
return true, nil
})
if err != nil {
return nil, err
}
// Set body to value of type `map[string]interface{}`
body = reflect.MakeMap(reflect.MapOf(reflect.TypeOf(key), reflect.TypeOf(pagesSlice)))
body.SetMapIndex(reflect.ValueOf(key), reflect.ValueOf(pagesSlice))
case []byte:
// Iterate over the pages to concatenate the bodies.
err = p.EachPage(func(page Page) (bool, error) {
b := page.GetBody().([]byte)
pagesSlice = append(pagesSlice, b)
// seperate pages with a comma
pagesSlice = append(pagesSlice, []byte{10})
return true, nil
})
if err != nil {
return nil, err
}
if len(pagesSlice) > 0 {
// Remove the trailing comma.
pagesSlice = pagesSlice[:len(pagesSlice)-1]
}
var b []byte
// Combine the slice of slices in to a single slice.
for _, slice := range pagesSlice {
b = append(b, slice.([]byte)...)
}
// Set body to value of type `bytes`.
body = reflect.New(reflect.TypeOf(b)).Elem()
body.SetBytes(b)
case []interface{}:
// Iterate over the pages to concatenate the bodies.
err = p.EachPage(func(page Page) (bool, error) {
b := page.GetBody().([]interface{})
pagesSlice = append(pagesSlice, b...)
return true, nil
})
if err != nil {
return nil, err
}
// Set body to value of type `[]interface{}`
body = reflect.MakeSlice(reflect.TypeOf(pagesSlice), len(pagesSlice), len(pagesSlice))
for i, s := range pagesSlice {
body.Index(i).Set(reflect.ValueOf(s))
}
default:
err := gophercloud.ErrUnexpectedType{}
err.Expected = "map[string]interface{}/[]byte/[]interface{}"
err.Actual = fmt.Sprintf("%T", pb)
return nil, err
}
// Each `Extract*` function is expecting a specific type of page coming back,
// otherwise the type assertion in those functions will fail. pageType is needed
// to create a type in this method that has the same type that the `Extract*`
// function is expecting and set the Body of that object to the concatenated
// pages.
page := reflect.New(pageType)
// Set the page body to be the concatenated pages.
page.Elem().FieldByName("Body").Set(body)
// Set any additional headers that were pass along. The `objectstorage` pacakge,
// for example, passes a Content-Type header.
h := make(http.Header)
for k, v := range p.Headers {
h.Add(k, v)
}
page.Elem().FieldByName("Header").Set(reflect.ValueOf(h))
// Type assert the page to a Page interface so that the type assertion in the
// `Extract*` methods will work.
return page.Elem().Interface().(Page), err
}

4
vendor/github.com/gophercloud/gophercloud/pagination/pkg.go generated vendored Normal file
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/*
Package pagination contains utilities and convenience structs that implement common pagination idioms within OpenStack APIs.
*/
package pagination

33
vendor/github.com/gophercloud/gophercloud/pagination/single.go generated vendored Normal file
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package pagination
import (
"fmt"
"reflect"
"github.com/gophercloud/gophercloud"
)
// SinglePageBase may be embedded in a Page that contains all of the results from an operation at once.
type SinglePageBase PageResult
// NextPageURL always returns "" to indicate that there are no more pages to return.
func (current SinglePageBase) NextPageURL() (string, error) {
return "", nil
}
// IsEmpty satisifies the IsEmpty method of the Page interface
func (current SinglePageBase) IsEmpty() (bool, error) {
if b, ok := current.Body.([]interface{}); ok {
return len(b) == 0, nil
}
err := gophercloud.ErrUnexpectedType{}
err.Expected = "[]interface{}"
err.Actual = fmt.Sprintf("%v", reflect.TypeOf(current.Body))
return true, err
}
// GetBody returns the single page's body. This method is needed to satisfy the
// Page interface.
func (current SinglePageBase) GetBody() interface{} {
return current.Body
}

475
vendor/github.com/gophercloud/gophercloud/params.go generated vendored Normal file
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package gophercloud
import (
"encoding/json"
"fmt"
"net/url"
"reflect"
"strconv"
"strings"
"time"
)
/*
BuildRequestBody builds a map[string]interface from the given `struct`. If
parent is not an empty string, the final map[string]interface returned will
encapsulate the built one. For example:
disk := 1
createOpts := flavors.CreateOpts{
ID: "1",
Name: "m1.tiny",
Disk: &disk,
RAM: 512,
VCPUs: 1,
RxTxFactor: 1.0,
}
body, err := gophercloud.BuildRequestBody(createOpts, "flavor")
The above example can be run as-is, however it is recommended to look at how
BuildRequestBody is used within Gophercloud to more fully understand how it
fits within the request process as a whole rather than use it directly as shown
above.
*/
func BuildRequestBody(opts interface{}, parent string) (map[string]interface{}, error) {
optsValue := reflect.ValueOf(opts)
if optsValue.Kind() == reflect.Ptr {
optsValue = optsValue.Elem()
}
optsType := reflect.TypeOf(opts)
if optsType.Kind() == reflect.Ptr {
optsType = optsType.Elem()
}
optsMap := make(map[string]interface{})
if optsValue.Kind() == reflect.Struct {
//fmt.Printf("optsValue.Kind() is a reflect.Struct: %+v\n", optsValue.Kind())
for i := 0; i < optsValue.NumField(); i++ {
v := optsValue.Field(i)
f := optsType.Field(i)
if f.Name != strings.Title(f.Name) {
//fmt.Printf("Skipping field: %s...\n", f.Name)
continue
}
//fmt.Printf("Starting on field: %s...\n", f.Name)
zero := isZero(v)
//fmt.Printf("v is zero?: %v\n", zero)
// if the field has a required tag that's set to "true"
if requiredTag := f.Tag.Get("required"); requiredTag == "true" {
//fmt.Printf("Checking required field [%s]:\n\tv: %+v\n\tisZero:%v\n", f.Name, v.Interface(), zero)
// if the field's value is zero, return a missing-argument error
if zero {
// if the field has a 'required' tag, it can't have a zero-value
err := ErrMissingInput{}
err.Argument = f.Name
return nil, err
}
}
if xorTag := f.Tag.Get("xor"); xorTag != "" {
//fmt.Printf("Checking `xor` tag for field [%s] with value %+v:\n\txorTag: %s\n", f.Name, v, xorTag)
xorField := optsValue.FieldByName(xorTag)
var xorFieldIsZero bool
if reflect.ValueOf(xorField.Interface()) == reflect.Zero(xorField.Type()) {
xorFieldIsZero = true
} else {
if xorField.Kind() == reflect.Ptr {
xorField = xorField.Elem()
}
xorFieldIsZero = isZero(xorField)
}
if !(zero != xorFieldIsZero) {
err := ErrMissingInput{}
err.Argument = fmt.Sprintf("%s/%s", f.Name, xorTag)
err.Info = fmt.Sprintf("Exactly one of %s and %s must be provided", f.Name, xorTag)
return nil, err
}
}
if orTag := f.Tag.Get("or"); orTag != "" {
//fmt.Printf("Checking `or` tag for field with:\n\tname: %+v\n\torTag:%s\n", f.Name, orTag)
//fmt.Printf("field is zero?: %v\n", zero)
if zero {
orField := optsValue.FieldByName(orTag)
var orFieldIsZero bool
if reflect.ValueOf(orField.Interface()) == reflect.Zero(orField.Type()) {
orFieldIsZero = true
} else {
if orField.Kind() == reflect.Ptr {
orField = orField.Elem()
}
orFieldIsZero = isZero(orField)
}
if orFieldIsZero {
err := ErrMissingInput{}
err.Argument = fmt.Sprintf("%s/%s", f.Name, orTag)
err.Info = fmt.Sprintf("At least one of %s and %s must be provided", f.Name, orTag)
return nil, err
}
}
}
jsonTag := f.Tag.Get("json")
if jsonTag == "-" {
continue
}
if v.Kind() == reflect.Struct || (v.Kind() == reflect.Ptr && v.Elem().Kind() == reflect.Struct) {
if zero {
//fmt.Printf("value before change: %+v\n", optsValue.Field(i))
if jsonTag != "" {
jsonTagPieces := strings.Split(jsonTag, ",")
if len(jsonTagPieces) > 1 && jsonTagPieces[1] == "omitempty" {
if v.CanSet() {
if !v.IsNil() {
if v.Kind() == reflect.Ptr {
v.Set(reflect.Zero(v.Type()))
}
}
//fmt.Printf("value after change: %+v\n", optsValue.Field(i))
}
}
}
continue
}
//fmt.Printf("Calling BuildRequestBody with:\n\tv: %+v\n\tf.Name:%s\n", v.Interface(), f.Name)
_, err := BuildRequestBody(v.Interface(), f.Name)
if err != nil {
return nil, err
}
}
}
//fmt.Printf("opts: %+v \n", opts)
b, err := json.Marshal(opts)
if err != nil {
return nil, err
}
//fmt.Printf("string(b): %s\n", string(b))
err = json.Unmarshal(b, &optsMap)
if err != nil {
return nil, err
}
//fmt.Printf("optsMap: %+v\n", optsMap)
if parent != "" {
optsMap = map[string]interface{}{parent: optsMap}
}
//fmt.Printf("optsMap after parent added: %+v\n", optsMap)
return optsMap, nil
}
// Return an error if the underlying type of 'opts' isn't a struct.
return nil, fmt.Errorf("Options type is not a struct.")
}
// EnabledState is a convenience type, mostly used in Create and Update
// operations. Because the zero value of a bool is FALSE, we need to use a
// pointer instead to indicate zero-ness.
type EnabledState *bool
// Convenience vars for EnabledState values.
var (
iTrue = true
iFalse = false
Enabled EnabledState = &iTrue
Disabled EnabledState = &iFalse
)
// IPVersion is a type for the possible IP address versions. Valid instances
// are IPv4 and IPv6
type IPVersion int
const (
// IPv4 is used for IP version 4 addresses
IPv4 IPVersion = 4
// IPv6 is used for IP version 6 addresses
IPv6 IPVersion = 6
)
// IntToPointer is a function for converting integers into integer pointers.
// This is useful when passing in options to operations.
func IntToPointer(i int) *int {
return &i
}
/*
MaybeString is an internal function to be used by request methods in individual
resource packages.
It takes a string that might be a zero value and returns either a pointer to its
address or nil. This is useful for allowing users to conveniently omit values
from an options struct by leaving them zeroed, but still pass nil to the JSON
serializer so they'll be omitted from the request body.
*/
func MaybeString(original string) *string {
if original != "" {
return &original
}
return nil
}
/*
MaybeInt is an internal function to be used by request methods in individual
resource packages.
Like MaybeString, it accepts an int that may or may not be a zero value, and
returns either a pointer to its address or nil. It's intended to hint that the
JSON serializer should omit its field.
*/
func MaybeInt(original int) *int {
if original != 0 {
return &original
}
return nil
}
/*
func isUnderlyingStructZero(v reflect.Value) bool {
switch v.Kind() {
case reflect.Ptr:
return isUnderlyingStructZero(v.Elem())
default:
return isZero(v)
}
}
*/
var t time.Time
func isZero(v reflect.Value) bool {
//fmt.Printf("\n\nchecking isZero for value: %+v\n", v)
switch v.Kind() {
case reflect.Ptr:
if v.IsNil() {
return true
}
return false
case reflect.Func, reflect.Map, reflect.Slice:
return v.IsNil()
case reflect.Array:
z := true
for i := 0; i < v.Len(); i++ {
z = z && isZero(v.Index(i))
}
return z
case reflect.Struct:
if v.Type() == reflect.TypeOf(t) {
if v.Interface().(time.Time).IsZero() {
return true
}
return false
}
z := true
for i := 0; i < v.NumField(); i++ {
z = z && isZero(v.Field(i))
}
return z
}
// Compare other types directly:
z := reflect.Zero(v.Type())
//fmt.Printf("zero type for value: %+v\n\n\n", z)
return v.Interface() == z.Interface()
}
/*
BuildQueryString is an internal function to be used by request methods in
individual resource packages.
It accepts a tagged structure and expands it into a URL struct. Field names are
converted into query parameters based on a "q" tag. For example:
type struct Something {
Bar string `q:"x_bar"`
Baz int `q:"lorem_ipsum"`
}
instance := Something{
Bar: "AAA",
Baz: "BBB",
}
will be converted into "?x_bar=AAA&lorem_ipsum=BBB".
The struct's fields may be strings, integers, or boolean values. Fields left at
their type's zero value will be omitted from the query.
*/
func BuildQueryString(opts interface{}) (*url.URL, error) {
optsValue := reflect.ValueOf(opts)
if optsValue.Kind() == reflect.Ptr {
optsValue = optsValue.Elem()
}
optsType := reflect.TypeOf(opts)
if optsType.Kind() == reflect.Ptr {
optsType = optsType.Elem()
}
params := url.Values{}
if optsValue.Kind() == reflect.Struct {
for i := 0; i < optsValue.NumField(); i++ {
v := optsValue.Field(i)
f := optsType.Field(i)
qTag := f.Tag.Get("q")
// if the field has a 'q' tag, it goes in the query string
if qTag != "" {
tags := strings.Split(qTag, ",")
// if the field is set, add it to the slice of query pieces
if !isZero(v) {
loop:
switch v.Kind() {
case reflect.Ptr:
v = v.Elem()
goto loop
case reflect.String:
params.Add(tags[0], v.String())
case reflect.Int:
params.Add(tags[0], strconv.FormatInt(v.Int(), 10))
case reflect.Bool:
params.Add(tags[0], strconv.FormatBool(v.Bool()))
case reflect.Slice:
switch v.Type().Elem() {
case reflect.TypeOf(0):
for i := 0; i < v.Len(); i++ {
params.Add(tags[0], strconv.FormatInt(v.Index(i).Int(), 10))
}
default:
for i := 0; i < v.Len(); i++ {
params.Add(tags[0], v.Index(i).String())
}
}
case reflect.Map:
if v.Type().Key().Kind() == reflect.String && v.Type().Elem().Kind() == reflect.String {
var s []string
for _, k := range v.MapKeys() {
value := v.MapIndex(k).String()
s = append(s, fmt.Sprintf("'%s':'%s'", k.String(), value))
}
params.Add(tags[0], fmt.Sprintf("{%s}", strings.Join(s, ", ")))
}
}
} else {
// if the field has a 'required' tag, it can't have a zero-value
if requiredTag := f.Tag.Get("required"); requiredTag == "true" {
return &url.URL{}, fmt.Errorf("Required query parameter [%s] not set.", f.Name)
}
}
}
}
return &url.URL{RawQuery: params.Encode()}, nil
}
// Return an error if the underlying type of 'opts' isn't a struct.
return nil, fmt.Errorf("Options type is not a struct.")
}
/*
BuildHeaders is an internal function to be used by request methods in
individual resource packages.
It accepts an arbitrary tagged structure and produces a string map that's
suitable for use as the HTTP headers of an outgoing request. Field names are
mapped to header names based in "h" tags.
type struct Something {
Bar string `h:"x_bar"`
Baz int `h:"lorem_ipsum"`
}
instance := Something{
Bar: "AAA",
Baz: "BBB",
}
will be converted into:
map[string]string{
"x_bar": "AAA",
"lorem_ipsum": "BBB",
}
Untagged fields and fields left at their zero values are skipped. Integers,
booleans and string values are supported.
*/
func BuildHeaders(opts interface{}) (map[string]string, error) {
optsValue := reflect.ValueOf(opts)
if optsValue.Kind() == reflect.Ptr {
optsValue = optsValue.Elem()
}
optsType := reflect.TypeOf(opts)
if optsType.Kind() == reflect.Ptr {
optsType = optsType.Elem()
}
optsMap := make(map[string]string)
if optsValue.Kind() == reflect.Struct {
for i := 0; i < optsValue.NumField(); i++ {
v := optsValue.Field(i)
f := optsType.Field(i)
hTag := f.Tag.Get("h")
// if the field has a 'h' tag, it goes in the header
if hTag != "" {
tags := strings.Split(hTag, ",")
// if the field is set, add it to the slice of query pieces
if !isZero(v) {
switch v.Kind() {
case reflect.String:
optsMap[tags[0]] = v.String()
case reflect.Int:
optsMap[tags[0]] = strconv.FormatInt(v.Int(), 10)
case reflect.Bool:
optsMap[tags[0]] = strconv.FormatBool(v.Bool())
}
} else {
// if the field has a 'required' tag, it can't have a zero-value
if requiredTag := f.Tag.Get("required"); requiredTag == "true" {
return optsMap, fmt.Errorf("Required header [%s] not set.", f.Name)
}
}
}
}
return optsMap, nil
}
// Return an error if the underlying type of 'opts' isn't a struct.
return optsMap, fmt.Errorf("Options type is not a struct.")
}
// IDSliceToQueryString takes a slice of elements and converts them into a query
// string. For example, if name=foo and slice=[]int{20, 40, 60}, then the
// result would be `?name=20&name=40&name=60'
func IDSliceToQueryString(name string, ids []int) string {
str := ""
for k, v := range ids {
if k == 0 {
str += "?"
} else {
str += "&"
}
str += fmt.Sprintf("%s=%s", name, strconv.Itoa(v))
}
return str
}
// IntWithinRange returns TRUE if an integer falls within a defined range, and
// FALSE if not.
func IntWithinRange(val, min, max int) bool {
return val > min && val < max
}

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vendor/github.com/gophercloud/gophercloud/provider_client.go generated vendored Normal file
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package gophercloud
import (
"bytes"
"encoding/json"
"io"
"io/ioutil"
"net/http"
"strings"
"sync"
)
// DefaultUserAgent is the default User-Agent string set in the request header.
const DefaultUserAgent = "gophercloud/2.0.0"
// UserAgent represents a User-Agent header.
type UserAgent struct {
// prepend is the slice of User-Agent strings to prepend to DefaultUserAgent.
// All the strings to prepend are accumulated and prepended in the Join method.
prepend []string
}
// Prepend prepends a user-defined string to the default User-Agent string. Users
// may pass in one or more strings to prepend.
func (ua *UserAgent) Prepend(s ...string) {
ua.prepend = append(s, ua.prepend...)
}
// Join concatenates all the user-defined User-Agend strings with the default
// Gophercloud User-Agent string.
func (ua *UserAgent) Join() string {
uaSlice := append(ua.prepend, DefaultUserAgent)
return strings.Join(uaSlice, " ")
}
// ProviderClient stores details that are required to interact with any
// services within a specific provider's API.
//
// Generally, you acquire a ProviderClient by calling the NewClient method in
// the appropriate provider's child package, providing whatever authentication
// credentials are required.
type ProviderClient struct {
// IdentityBase is the base URL used for a particular provider's identity
// service - it will be used when issuing authenticatation requests. It
// should point to the root resource of the identity service, not a specific
// identity version.
IdentityBase string
// IdentityEndpoint is the identity endpoint. This may be a specific version
// of the identity service. If this is the case, this endpoint is used rather
// than querying versions first.
IdentityEndpoint string
// TokenID is the ID of the most recently issued valid token.
// NOTE: Aside from within a custom ReauthFunc, this field shouldn't be set by an application.
// To safely read or write this value, call `Token` or `SetToken`, respectively
TokenID string
// EndpointLocator describes how this provider discovers the endpoints for
// its constituent services.
EndpointLocator EndpointLocator
// HTTPClient allows users to interject arbitrary http, https, or other transit behaviors.
HTTPClient http.Client
// UserAgent represents the User-Agent header in the HTTP request.
UserAgent UserAgent
// ReauthFunc is the function used to re-authenticate the user if the request
// fails with a 401 HTTP response code. This a needed because there may be multiple
// authentication functions for different Identity service versions.
ReauthFunc func() error
mut *sync.RWMutex
reauthmut *reauthlock
}
type reauthlock struct {
sync.RWMutex
reauthing bool
}
// AuthenticatedHeaders returns a map of HTTP headers that are common for all
// authenticated service requests.
func (client *ProviderClient) AuthenticatedHeaders() (m map[string]string) {
if client.reauthmut != nil {
client.reauthmut.RLock()
if client.reauthmut.reauthing {
client.reauthmut.RUnlock()
return
}
client.reauthmut.RUnlock()
}
t := client.Token()
if t == "" {
return
}
return map[string]string{"X-Auth-Token": t}
}
// UseTokenLock creates a mutex that is used to allow safe concurrent access to the auth token.
// If the application's ProviderClient is not used concurrently, this doesn't need to be called.
func (client *ProviderClient) UseTokenLock() {
client.mut = new(sync.RWMutex)
client.reauthmut = new(reauthlock)
}
// Token safely reads the value of the auth token from the ProviderClient. Applications should
// call this method to access the token instead of the TokenID field
func (client *ProviderClient) Token() string {
if client.mut != nil {
client.mut.RLock()
defer client.mut.RUnlock()
}
return client.TokenID
}
// SetToken safely sets the value of the auth token in the ProviderClient. Applications may
// use this method in a custom ReauthFunc
func (client *ProviderClient) SetToken(t string) {
if client.mut != nil {
client.mut.Lock()
defer client.mut.Unlock()
}
client.TokenID = t
}
//Reauthenticate calls client.ReauthFunc in a thread-safe way. If this is
//called because of a 401 response, the caller may pass the previous token. In
//this case, the reauthentication can be skipped if another thread has already
//reauthenticated in the meantime. If no previous token is known, an empty
//string should be passed instead to force unconditional reauthentication.
func (client *ProviderClient) Reauthenticate(previousToken string) (err error) {
if client.ReauthFunc == nil {
return nil
}
if client.mut == nil {
return client.ReauthFunc()
}
client.mut.Lock()
defer client.mut.Unlock()
client.reauthmut.Lock()
client.reauthmut.reauthing = true
client.reauthmut.Unlock()
if previousToken == "" || client.TokenID == previousToken {
err = client.ReauthFunc()
}
client.reauthmut.Lock()
client.reauthmut.reauthing = false
client.reauthmut.Unlock()
return
}
// RequestOpts customizes the behavior of the provider.Request() method.
type RequestOpts struct {
// JSONBody, if provided, will be encoded as JSON and used as the body of the HTTP request. The
// content type of the request will default to "application/json" unless overridden by MoreHeaders.
// It's an error to specify both a JSONBody and a RawBody.
JSONBody interface{}
// RawBody contains an io.Reader that will be consumed by the request directly. No content-type
// will be set unless one is provided explicitly by MoreHeaders.
RawBody io.Reader
// JSONResponse, if provided, will be populated with the contents of the response body parsed as
// JSON.
JSONResponse interface{}
// OkCodes contains a list of numeric HTTP status codes that should be interpreted as success. If
// the response has a different code, an error will be returned.
OkCodes []int
// MoreHeaders specifies additional HTTP headers to be provide on the request. If a header is
// provided with a blank value (""), that header will be *omitted* instead: use this to suppress
// the default Accept header or an inferred Content-Type, for example.
MoreHeaders map[string]string
// ErrorContext specifies the resource error type to return if an error is encountered.
// This lets resources override default error messages based on the response status code.
ErrorContext error
}
var applicationJSON = "application/json"
// Request performs an HTTP request using the ProviderClient's current HTTPClient. An authentication
// header will automatically be provided.
func (client *ProviderClient) Request(method, url string, options *RequestOpts) (*http.Response, error) {
var body io.Reader
var contentType *string
// Derive the content body by either encoding an arbitrary object as JSON, or by taking a provided
// io.ReadSeeker as-is. Default the content-type to application/json.
if options.JSONBody != nil {
if options.RawBody != nil {
panic("Please provide only one of JSONBody or RawBody to gophercloud.Request().")
}
rendered, err := json.Marshal(options.JSONBody)
if err != nil {
return nil, err
}
body = bytes.NewReader(rendered)
contentType = &applicationJSON
}
if options.RawBody != nil {
body = options.RawBody
}
// Construct the http.Request.
req, err := http.NewRequest(method, url, body)
if err != nil {
return nil, err
}
// Populate the request headers. Apply options.MoreHeaders last, to give the caller the chance to
// modify or omit any header.
if contentType != nil {
req.Header.Set("Content-Type", *contentType)
}
req.Header.Set("Accept", applicationJSON)
// Set the User-Agent header
req.Header.Set("User-Agent", client.UserAgent.Join())
if options.MoreHeaders != nil {
for k, v := range options.MoreHeaders {
if v != "" {
req.Header.Set(k, v)
} else {
req.Header.Del(k)
}
}
}
// get latest token from client
for k, v := range client.AuthenticatedHeaders() {
req.Header.Set(k, v)
}
// Set connection parameter to close the connection immediately when we've got the response
req.Close = true
prereqtok := req.Header.Get("X-Auth-Token")
// Issue the request.
resp, err := client.HTTPClient.Do(req)
if err != nil {
return nil, err
}
// Allow default OkCodes if none explicitly set
if options.OkCodes == nil {
options.OkCodes = defaultOkCodes(method)
}
// Validate the HTTP response status.
var ok bool
for _, code := range options.OkCodes {
if resp.StatusCode == code {
ok = true
break
}
}
if !ok {
body, _ := ioutil.ReadAll(resp.Body)
resp.Body.Close()
respErr := ErrUnexpectedResponseCode{
URL: url,
Method: method,
Expected: options.OkCodes,
Actual: resp.StatusCode,
Body: body,
}
errType := options.ErrorContext
switch resp.StatusCode {
case http.StatusBadRequest:
err = ErrDefault400{respErr}
if error400er, ok := errType.(Err400er); ok {
err = error400er.Error400(respErr)
}
case http.StatusUnauthorized:
if client.ReauthFunc != nil {
err = client.Reauthenticate(prereqtok)
if err != nil {
e := &ErrUnableToReauthenticate{}
e.ErrOriginal = respErr
return nil, e
}
if options.RawBody != nil {
if seeker, ok := options.RawBody.(io.Seeker); ok {
seeker.Seek(0, 0)
}
}
// make a new call to request with a nil reauth func in order to avoid infinite loop
reauthFunc := client.ReauthFunc
client.ReauthFunc = nil
resp, err = client.Request(method, url, options)
client.ReauthFunc = reauthFunc
if err != nil {
switch err.(type) {
case *ErrUnexpectedResponseCode:
e := &ErrErrorAfterReauthentication{}
e.ErrOriginal = err.(*ErrUnexpectedResponseCode)
return nil, e
default:
e := &ErrErrorAfterReauthentication{}
e.ErrOriginal = err
return nil, e
}
}
return resp, nil
}
err = ErrDefault401{respErr}
if error401er, ok := errType.(Err401er); ok {
err = error401er.Error401(respErr)
}
case http.StatusForbidden:
err = ErrDefault403{respErr}
if error403er, ok := errType.(Err403er); ok {
err = error403er.Error403(respErr)
}
case http.StatusNotFound:
err = ErrDefault404{respErr}
if error404er, ok := errType.(Err404er); ok {
err = error404er.Error404(respErr)
}
case http.StatusMethodNotAllowed:
err = ErrDefault405{respErr}
if error405er, ok := errType.(Err405er); ok {
err = error405er.Error405(respErr)
}
case http.StatusRequestTimeout:
err = ErrDefault408{respErr}
if error408er, ok := errType.(Err408er); ok {
err = error408er.Error408(respErr)
}
case 429:
err = ErrDefault429{respErr}
if error429er, ok := errType.(Err429er); ok {
err = error429er.Error429(respErr)
}
case http.StatusInternalServerError:
err = ErrDefault500{respErr}
if error500er, ok := errType.(Err500er); ok {
err = error500er.Error500(respErr)
}
case http.StatusServiceUnavailable:
err = ErrDefault503{respErr}
if error503er, ok := errType.(Err503er); ok {
err = error503er.Error503(respErr)
}
}
if err == nil {
err = respErr
}
return resp, err
}
// Parse the response body as JSON, if requested to do so.
if options.JSONResponse != nil {
defer resp.Body.Close()
if err := json.NewDecoder(resp.Body).Decode(options.JSONResponse); err != nil {
return nil, err
}
}
return resp, nil
}
func defaultOkCodes(method string) []int {
switch {
case method == "GET":
return []int{200}
case method == "POST":
return []int{201, 202}
case method == "PUT":
return []int{201, 202}
case method == "PATCH":
return []int{200, 202, 204}
case method == "DELETE":
return []int{202, 204}
}
return []int{}
}

446
vendor/github.com/gophercloud/gophercloud/results.go generated vendored Normal file
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@ -0,0 +1,446 @@
package gophercloud
import (
"bytes"
"encoding/json"
"fmt"
"io"
"net/http"
"reflect"
"strconv"
"time"
)
/*
Result is an internal type to be used by individual resource packages, but its
methods will be available on a wide variety of user-facing embedding types.
It acts as a base struct that other Result types, returned from request
functions, can embed for convenience. All Results capture basic information
from the HTTP transaction that was performed, including the response body,
HTTP headers, and any errors that happened.
Generally, each Result type will have an Extract method that can be used to
further interpret the result's payload in a specific context. Extensions or
providers can then provide additional extraction functions to pull out
provider- or extension-specific information as well.
*/
type Result struct {
// Body is the payload of the HTTP response from the server. In most cases,
// this will be the deserialized JSON structure.
Body interface{}
// Header contains the HTTP header structure from the original response.
Header http.Header
// Err is an error that occurred during the operation. It's deferred until
// extraction to make it easier to chain the Extract call.
Err error
}
// ExtractInto allows users to provide an object into which `Extract` will extract
// the `Result.Body`. This would be useful for OpenStack providers that have
// different fields in the response object than OpenStack proper.
func (r Result) ExtractInto(to interface{}) error {
if r.Err != nil {
return r.Err
}
if reader, ok := r.Body.(io.Reader); ok {
if readCloser, ok := reader.(io.Closer); ok {
defer readCloser.Close()
}
return json.NewDecoder(reader).Decode(to)
}
b, err := json.Marshal(r.Body)
if err != nil {
return err
}
err = json.Unmarshal(b, to)
return err
}
func (r Result) extractIntoPtr(to interface{}, label string) error {
if label == "" {
return r.ExtractInto(&to)
}
var m map[string]interface{}
err := r.ExtractInto(&m)
if err != nil {
return err
}
b, err := json.Marshal(m[label])
if err != nil {
return err
}
toValue := reflect.ValueOf(to)
if toValue.Kind() == reflect.Ptr {
toValue = toValue.Elem()
}
switch toValue.Kind() {
case reflect.Slice:
typeOfV := toValue.Type().Elem()
if typeOfV.Kind() == reflect.Struct {
if typeOfV.NumField() > 0 && typeOfV.Field(0).Anonymous {
newSlice := reflect.MakeSlice(reflect.SliceOf(typeOfV), 0, 0)
for _, v := range m[label].([]interface{}) {
// For each iteration of the slice, we create a new struct.
// This is to work around a bug where elements of a slice
// are reused and not overwritten when the same copy of the
// struct is used:
//
// https://github.com/golang/go/issues/21092
// https://github.com/golang/go/issues/24155
// https://play.golang.org/p/NHo3ywlPZli
newType := reflect.New(typeOfV).Elem()
b, err := json.Marshal(v)
if err != nil {
return err
}
// This is needed for structs with an UnmarshalJSON method.
// Technically this is just unmarshalling the response into
// a struct that is never used, but it's good enough to
// trigger the UnmarshalJSON method.
for i := 0; i < newType.NumField(); i++ {
s := newType.Field(i).Addr().Interface()
// Unmarshal is used rather than NewDecoder to also work
// around the above-mentioned bug.
err = json.Unmarshal(b, s)
if err != nil {
return err
}
}
newSlice = reflect.Append(newSlice, newType)
}
// "to" should now be properly modeled to receive the
// JSON response body and unmarshal into all the correct
// fields of the struct or composed extension struct
// at the end of this method.
toValue.Set(newSlice)
}
}
case reflect.Struct:
typeOfV := toValue.Type()
if typeOfV.NumField() > 0 && typeOfV.Field(0).Anonymous {
for i := 0; i < toValue.NumField(); i++ {
toField := toValue.Field(i)
if toField.Kind() == reflect.Struct {
s := toField.Addr().Interface()
err = json.NewDecoder(bytes.NewReader(b)).Decode(s)
if err != nil {
return err
}
}
}
}
}
err = json.Unmarshal(b, &to)
return err
}
// ExtractIntoStructPtr will unmarshal the Result (r) into the provided
// interface{} (to).
//
// NOTE: For internal use only
//
// `to` must be a pointer to an underlying struct type
//
// If provided, `label` will be filtered out of the response
// body prior to `r` being unmarshalled into `to`.
func (r Result) ExtractIntoStructPtr(to interface{}, label string) error {
if r.Err != nil {
return r.Err
}
t := reflect.TypeOf(to)
if k := t.Kind(); k != reflect.Ptr {
return fmt.Errorf("Expected pointer, got %v", k)
}
switch t.Elem().Kind() {
case reflect.Struct:
return r.extractIntoPtr(to, label)
default:
return fmt.Errorf("Expected pointer to struct, got: %v", t)
}
}
// ExtractIntoSlicePtr will unmarshal the Result (r) into the provided
// interface{} (to).
//
// NOTE: For internal use only
//
// `to` must be a pointer to an underlying slice type
//
// If provided, `label` will be filtered out of the response
// body prior to `r` being unmarshalled into `to`.
func (r Result) ExtractIntoSlicePtr(to interface{}, label string) error {
if r.Err != nil {
return r.Err
}
t := reflect.TypeOf(to)
if k := t.Kind(); k != reflect.Ptr {
return fmt.Errorf("Expected pointer, got %v", k)
}
switch t.Elem().Kind() {
case reflect.Slice:
return r.extractIntoPtr(to, label)
default:
return fmt.Errorf("Expected pointer to slice, got: %v", t)
}
}
// PrettyPrintJSON creates a string containing the full response body as
// pretty-printed JSON. It's useful for capturing test fixtures and for
// debugging extraction bugs. If you include its output in an issue related to
// a buggy extraction function, we will all love you forever.
func (r Result) PrettyPrintJSON() string {
pretty, err := json.MarshalIndent(r.Body, "", " ")
if err != nil {
panic(err.Error())
}
return string(pretty)
}
// ErrResult is an internal type to be used by individual resource packages, but
// its methods will be available on a wide variety of user-facing embedding
// types.
//
// It represents results that only contain a potential error and
// nothing else. Usually, if the operation executed successfully, the Err field
// will be nil; otherwise it will be stocked with a relevant error. Use the
// ExtractErr method
// to cleanly pull it out.
type ErrResult struct {
Result
}
// ExtractErr is a function that extracts error information, or nil, from a result.
func (r ErrResult) ExtractErr() error {
return r.Err
}
/*
HeaderResult is an internal type to be used by individual resource packages, but
its methods will be available on a wide variety of user-facing embedding types.
It represents a result that only contains an error (possibly nil) and an
http.Header. This is used, for example, by the objectstorage packages in
openstack, because most of the operations don't return response bodies, but do
have relevant information in headers.
*/
type HeaderResult struct {
Result
}
// ExtractInto allows users to provide an object into which `Extract` will
// extract the http.Header headers of the result.
func (r HeaderResult) ExtractInto(to interface{}) error {
if r.Err != nil {
return r.Err
}
tmpHeaderMap := map[string]string{}
for k, v := range r.Header {
if len(v) > 0 {
tmpHeaderMap[k] = v[0]
}
}
b, err := json.Marshal(tmpHeaderMap)
if err != nil {
return err
}
err = json.Unmarshal(b, to)
return err
}
// RFC3339Milli describes a common time format used by some API responses.
const RFC3339Milli = "2006-01-02T15:04:05.999999Z"
type JSONRFC3339Milli time.Time
func (jt *JSONRFC3339Milli) UnmarshalJSON(data []byte) error {
b := bytes.NewBuffer(data)
dec := json.NewDecoder(b)
var s string
if err := dec.Decode(&s); err != nil {
return err
}
t, err := time.Parse(RFC3339Milli, s)
if err != nil {
return err
}
*jt = JSONRFC3339Milli(t)
return nil
}
const RFC3339MilliNoZ = "2006-01-02T15:04:05.999999"
type JSONRFC3339MilliNoZ time.Time
func (jt *JSONRFC3339MilliNoZ) UnmarshalJSON(data []byte) error {
var s string
if err := json.Unmarshal(data, &s); err != nil {
return err
}
if s == "" {
return nil
}
t, err := time.Parse(RFC3339MilliNoZ, s)
if err != nil {
return err
}
*jt = JSONRFC3339MilliNoZ(t)
return nil
}
type JSONRFC1123 time.Time
func (jt *JSONRFC1123) UnmarshalJSON(data []byte) error {
var s string
if err := json.Unmarshal(data, &s); err != nil {
return err
}
if s == "" {
return nil
}
t, err := time.Parse(time.RFC1123, s)
if err != nil {
return err
}
*jt = JSONRFC1123(t)
return nil
}
type JSONUnix time.Time
func (jt *JSONUnix) UnmarshalJSON(data []byte) error {
var s string
if err := json.Unmarshal(data, &s); err != nil {
return err
}
if s == "" {
return nil
}
unix, err := strconv.ParseInt(s, 10, 64)
if err != nil {
return err
}
t = time.Unix(unix, 0)
*jt = JSONUnix(t)
return nil
}
// RFC3339NoZ is the time format used in Heat (Orchestration).
const RFC3339NoZ = "2006-01-02T15:04:05"
type JSONRFC3339NoZ time.Time
func (jt *JSONRFC3339NoZ) UnmarshalJSON(data []byte) error {
var s string
if err := json.Unmarshal(data, &s); err != nil {
return err
}
if s == "" {
return nil
}
t, err := time.Parse(RFC3339NoZ, s)
if err != nil {
return err
}
*jt = JSONRFC3339NoZ(t)
return nil
}
// RFC3339ZNoT is the time format used in Zun (Containers Service).
const RFC3339ZNoT = "2006-01-02 15:04:05-07:00"
type JSONRFC3339ZNoT time.Time
func (jt *JSONRFC3339ZNoT) UnmarshalJSON(data []byte) error {
var s string
if err := json.Unmarshal(data, &s); err != nil {
return err
}
if s == "" {
return nil
}
t, err := time.Parse(RFC3339ZNoT, s)
if err != nil {
return err
}
*jt = JSONRFC3339ZNoT(t)
return nil
}
// RFC3339ZNoTNoZ is another time format used in Zun (Containers Service).
const RFC3339ZNoTNoZ = "2006-01-02 15:04:05"
type JSONRFC3339ZNoTNoZ time.Time
func (jt *JSONRFC3339ZNoTNoZ) UnmarshalJSON(data []byte) error {
var s string
if err := json.Unmarshal(data, &s); err != nil {
return err
}
if s == "" {
return nil
}
t, err := time.Parse(RFC3339ZNoTNoZ, s)
if err != nil {
return err
}
*jt = JSONRFC3339ZNoTNoZ(t)
return nil
}
/*
Link is an internal type to be used in packages of collection resources that are
paginated in a certain way.
It's a response substructure common to many paginated collection results that is
used to point to related pages. Usually, the one we care about is the one with
Rel field set to "next".
*/
type Link struct {
Href string `json:"href"`
Rel string `json:"rel"`
}
/*
ExtractNextURL is an internal function useful for packages of collection
resources that are paginated in a certain way.
It attempts to extract the "next" URL from slice of Link structs, or
"" if no such URL is present.
*/
func ExtractNextURL(links []Link) (string, error) {
var url string
for _, l := range links {
if l.Rel == "next" {
url = l.Href
}
}
if url == "" {
return "", nil
}
return url, nil
}

150
vendor/github.com/gophercloud/gophercloud/service_client.go generated vendored Normal file
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package gophercloud
import (
"io"
"net/http"
"strings"
)
// ServiceClient stores details required to interact with a specific service API implemented by a provider.
// Generally, you'll acquire these by calling the appropriate `New` method on a ProviderClient.
type ServiceClient struct {
// ProviderClient is a reference to the provider that implements this service.
*ProviderClient
// Endpoint is the base URL of the service's API, acquired from a service catalog.
// It MUST end with a /.
Endpoint string
// ResourceBase is the base URL shared by the resources within a service's API. It should include
// the API version and, like Endpoint, MUST end with a / if set. If not set, the Endpoint is used
// as-is, instead.
ResourceBase string
// This is the service client type (e.g. compute, sharev2).
// NOTE: FOR INTERNAL USE ONLY. DO NOT SET. GOPHERCLOUD WILL SET THIS.
// It is only exported because it gets set in a different package.
Type string
// The microversion of the service to use. Set this to use a particular microversion.
Microversion string
// MoreHeaders allows users (or Gophercloud) to set service-wide headers on requests. Put another way,
// values set in this field will be set on all the HTTP requests the service client sends.
MoreHeaders map[string]string
}
// ResourceBaseURL returns the base URL of any resources used by this service. It MUST end with a /.
func (client *ServiceClient) ResourceBaseURL() string {
if client.ResourceBase != "" {
return client.ResourceBase
}
return client.Endpoint
}
// ServiceURL constructs a URL for a resource belonging to this provider.
func (client *ServiceClient) ServiceURL(parts ...string) string {
return client.ResourceBaseURL() + strings.Join(parts, "/")
}
func (client *ServiceClient) initReqOpts(url string, JSONBody interface{}, JSONResponse interface{}, opts *RequestOpts) {
if v, ok := (JSONBody).(io.Reader); ok {
opts.RawBody = v
} else if JSONBody != nil {
opts.JSONBody = JSONBody
}
if JSONResponse != nil {
opts.JSONResponse = JSONResponse
}
if opts.MoreHeaders == nil {
opts.MoreHeaders = make(map[string]string)
}
if client.Microversion != "" {
client.setMicroversionHeader(opts)
}
}
// Get calls `Request` with the "GET" HTTP verb.
func (client *ServiceClient) Get(url string, JSONResponse interface{}, opts *RequestOpts) (*http.Response, error) {
if opts == nil {
opts = new(RequestOpts)
}
client.initReqOpts(url, nil, JSONResponse, opts)
return client.Request("GET", url, opts)
}
// Post calls `Request` with the "POST" HTTP verb.
func (client *ServiceClient) Post(url string, JSONBody interface{}, JSONResponse interface{}, opts *RequestOpts) (*http.Response, error) {
if opts == nil {
opts = new(RequestOpts)
}
client.initReqOpts(url, JSONBody, JSONResponse, opts)
return client.Request("POST", url, opts)
}
// Put calls `Request` with the "PUT" HTTP verb.
func (client *ServiceClient) Put(url string, JSONBody interface{}, JSONResponse interface{}, opts *RequestOpts) (*http.Response, error) {
if opts == nil {
opts = new(RequestOpts)
}
client.initReqOpts(url, JSONBody, JSONResponse, opts)
return client.Request("PUT", url, opts)
}
// Patch calls `Request` with the "PATCH" HTTP verb.
func (client *ServiceClient) Patch(url string, JSONBody interface{}, JSONResponse interface{}, opts *RequestOpts) (*http.Response, error) {
if opts == nil {
opts = new(RequestOpts)
}
client.initReqOpts(url, JSONBody, JSONResponse, opts)
return client.Request("PATCH", url, opts)
}
// Delete calls `Request` with the "DELETE" HTTP verb.
func (client *ServiceClient) Delete(url string, opts *RequestOpts) (*http.Response, error) {
if opts == nil {
opts = new(RequestOpts)
}
client.initReqOpts(url, nil, nil, opts)
return client.Request("DELETE", url, opts)
}
// Head calls `Request` with the "HEAD" HTTP verb.
func (client *ServiceClient) Head(url string, opts *RequestOpts) (*http.Response, error) {
if opts == nil {
opts = new(RequestOpts)
}
client.initReqOpts(url, nil, nil, opts)
return client.Request("HEAD", url, opts)
}
func (client *ServiceClient) setMicroversionHeader(opts *RequestOpts) {
switch client.Type {
case "compute":
opts.MoreHeaders["X-OpenStack-Nova-API-Version"] = client.Microversion
case "sharev2":
opts.MoreHeaders["X-OpenStack-Manila-API-Version"] = client.Microversion
case "volume":
opts.MoreHeaders["X-OpenStack-Volume-API-Version"] = client.Microversion
}
if client.Type != "" {
opts.MoreHeaders["OpenStack-API-Version"] = client.Type + " " + client.Microversion
}
}
// Request carries out the HTTP operation for the service client
func (client *ServiceClient) Request(method, url string, options *RequestOpts) (*http.Response, error) {
if len(client.MoreHeaders) > 0 {
if options == nil {
options = new(RequestOpts)
}
for k, v := range client.MoreHeaders {
options.MoreHeaders[k] = v
}
}
return client.ProviderClient.Request(method, url, options)
}

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package gophercloud
import (
"fmt"
"net/url"
"path/filepath"
"strings"
"time"
)
// WaitFor polls a predicate function, once per second, up to a timeout limit.
// This is useful to wait for a resource to transition to a certain state.
// To handle situations when the predicate might hang indefinitely, the
// predicate will be prematurely cancelled after the timeout.
// Resource packages will wrap this in a more convenient function that's
// specific to a certain resource, but it can also be useful on its own.
func WaitFor(timeout int, predicate func() (bool, error)) error {
type WaitForResult struct {
Success bool
Error error
}
start := time.Now().Unix()
for {
// If a timeout is set, and that's been exceeded, shut it down.
if timeout >= 0 && time.Now().Unix()-start >= int64(timeout) {
return fmt.Errorf("A timeout occurred")
}
time.Sleep(1 * time.Second)
var result WaitForResult
ch := make(chan bool, 1)
go func() {
defer close(ch)
satisfied, err := predicate()
result.Success = satisfied
result.Error = err
}()
select {
case <-ch:
if result.Error != nil {
return result.Error
}
if result.Success {
return nil
}
// If the predicate has not finished by the timeout, cancel it.
case <-time.After(time.Duration(timeout) * time.Second):
return fmt.Errorf("A timeout occurred")
}
}
}
// NormalizeURL is an internal function to be used by provider clients.
//
// It ensures that each endpoint URL has a closing `/`, as expected by
// ServiceClient's methods.
func NormalizeURL(url string) string {
if !strings.HasSuffix(url, "/") {
return url + "/"
}
return url
}
// NormalizePathURL is used to convert rawPath to a fqdn, using basePath as
// a reference in the filesystem, if necessary. basePath is assumed to contain
// either '.' when first used, or the file:// type fqdn of the parent resource.
// e.g. myFavScript.yaml => file://opt/lib/myFavScript.yaml
func NormalizePathURL(basePath, rawPath string) (string, error) {
u, err := url.Parse(rawPath)
if err != nil {
return "", err
}
// if a scheme is defined, it must be a fqdn already
if u.Scheme != "" {
return u.String(), nil
}
// if basePath is a url, then child resources are assumed to be relative to it
bu, err := url.Parse(basePath)
if err != nil {
return "", err
}
var basePathSys, absPathSys string
if bu.Scheme != "" {
basePathSys = filepath.FromSlash(bu.Path)
absPathSys = filepath.Join(basePathSys, rawPath)
bu.Path = filepath.ToSlash(absPathSys)
return bu.String(), nil
}
absPathSys = filepath.Join(basePath, rawPath)
u.Path = filepath.ToSlash(absPathSys)
if err != nil {
return "", err
}
u.Scheme = "file"
return u.String(), nil
}

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// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build go1.7
// Package ctxhttp provides helper functions for performing context-aware HTTP requests.
package ctxhttp // import "golang.org/x/net/context/ctxhttp"
import (
"io"
"net/http"
"net/url"
"strings"
"golang.org/x/net/context"
)
// Do sends an HTTP request with the provided http.Client and returns
// an HTTP response.
//
// If the client is nil, http.DefaultClient is used.
//
// The provided ctx must be non-nil. If it is canceled or times out,
// ctx.Err() will be returned.
func Do(ctx context.Context, client *http.Client, req *http.Request) (*http.Response, error) {
if client == nil {
client = http.DefaultClient
}
resp, err := client.Do(req.WithContext(ctx))
// If we got an error, and the context has been canceled,
// the context's error is probably more useful.
if err != nil {
select {
case <-ctx.Done():
err = ctx.Err()
default:
}
}
return resp, err
}
// Get issues a GET request via the Do function.
func Get(ctx context.Context, client *http.Client, url string) (*http.Response, error) {
req, err := http.NewRequest("GET", url, nil)
if err != nil {
return nil, err
}
return Do(ctx, client, req)
}
// Head issues a HEAD request via the Do function.
func Head(ctx context.Context, client *http.Client, url string) (*http.Response, error) {
req, err := http.NewRequest("HEAD", url, nil)
if err != nil {
return nil, err
}
return Do(ctx, client, req)
}
// Post issues a POST request via the Do function.
func Post(ctx context.Context, client *http.Client, url string, bodyType string, body io.Reader) (*http.Response, error) {
req, err := http.NewRequest("POST", url, body)
if err != nil {
return nil, err
}
req.Header.Set("Content-Type", bodyType)
return Do(ctx, client, req)
}
// PostForm issues a POST request via the Do function.
func PostForm(ctx context.Context, client *http.Client, url string, data url.Values) (*http.Response, error) {
return Post(ctx, client, url, "application/x-www-form-urlencoded", strings.NewReader(data.Encode()))
}

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// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build !go1.7
package ctxhttp // import "golang.org/x/net/context/ctxhttp"
import (
"io"
"net/http"
"net/url"
"strings"
"golang.org/x/net/context"
)
func nop() {}
var (
testHookContextDoneBeforeHeaders = nop
testHookDoReturned = nop
testHookDidBodyClose = nop
)
// Do sends an HTTP request with the provided http.Client and returns an HTTP response.
// If the client is nil, http.DefaultClient is used.
// If the context is canceled or times out, ctx.Err() will be returned.
func Do(ctx context.Context, client *http.Client, req *http.Request) (*http.Response, error) {
if client == nil {
client = http.DefaultClient
}
// TODO(djd): Respect any existing value of req.Cancel.
cancel := make(chan struct{})
req.Cancel = cancel
type responseAndError struct {
resp *http.Response
err error
}
result := make(chan responseAndError, 1)
// Make local copies of test hooks closed over by goroutines below.
// Prevents data races in tests.
testHookDoReturned := testHookDoReturned
testHookDidBodyClose := testHookDidBodyClose
go func() {
resp, err := client.Do(req)
testHookDoReturned()
result <- responseAndError{resp, err}
}()
var resp *http.Response
select {
case <-ctx.Done():
testHookContextDoneBeforeHeaders()
close(cancel)
// Clean up after the goroutine calling client.Do:
go func() {
if r := <-result; r.resp != nil {
testHookDidBodyClose()
r.resp.Body.Close()
}
}()
return nil, ctx.Err()
case r := <-result:
var err error
resp, err = r.resp, r.err
if err != nil {
return resp, err
}
}
c := make(chan struct{})
go func() {
select {
case <-ctx.Done():
close(cancel)
case <-c:
// The response's Body is closed.
}
}()
resp.Body = &notifyingReader{resp.Body, c}
return resp, nil
}
// Get issues a GET request via the Do function.
func Get(ctx context.Context, client *http.Client, url string) (*http.Response, error) {
req, err := http.NewRequest("GET", url, nil)
if err != nil {
return nil, err
}
return Do(ctx, client, req)
}
// Head issues a HEAD request via the Do function.
func Head(ctx context.Context, client *http.Client, url string) (*http.Response, error) {
req, err := http.NewRequest("HEAD", url, nil)
if err != nil {
return nil, err
}
return Do(ctx, client, req)
}
// Post issues a POST request via the Do function.
func Post(ctx context.Context, client *http.Client, url string, bodyType string, body io.Reader) (*http.Response, error) {
req, err := http.NewRequest("POST", url, body)
if err != nil {
return nil, err
}
req.Header.Set("Content-Type", bodyType)
return Do(ctx, client, req)
}
// PostForm issues a POST request via the Do function.
func PostForm(ctx context.Context, client *http.Client, url string, data url.Values) (*http.Response, error) {
return Post(ctx, client, url, "application/x-www-form-urlencoded", strings.NewReader(data.Encode()))
}
// notifyingReader is an io.ReadCloser that closes the notify channel after
// Close is called or a Read fails on the underlying ReadCloser.
type notifyingReader struct {
io.ReadCloser
notify chan<- struct{}
}
func (r *notifyingReader) Read(p []byte) (int, error) {
n, err := r.ReadCloser.Read(p)
if err != nil && r.notify != nil {
close(r.notify)
r.notify = nil
}
return n, err
}
func (r *notifyingReader) Close() error {
err := r.ReadCloser.Close()
if r.notify != nil {
close(r.notify)
r.notify = nil
}
return err
}

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language: go
go:
- tip
install:
- export GOPATH="$HOME/gopath"
- mkdir -p "$GOPATH/src/golang.org/x"
- mv "$TRAVIS_BUILD_DIR" "$GOPATH/src/golang.org/x/oauth2"
- go get -v -t -d golang.org/x/oauth2/...
script:
- go test -v golang.org/x/oauth2/...

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vendor/golang.org/x/oauth2/AUTHORS generated vendored Normal file
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# This source code refers to The Go Authors for copyright purposes.
# The master list of authors is in the main Go distribution,
# visible at http://tip.golang.org/AUTHORS.

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# Contributing to Go
Go is an open source project.
It is the work of hundreds of contributors. We appreciate your help!
## Filing issues
When [filing an issue](https://github.com/golang/oauth2/issues), make sure to answer these five questions:
1. What version of Go are you using (`go version`)?
2. What operating system and processor architecture are you using?
3. What did you do?
4. What did you expect to see?
5. What did you see instead?
General questions should go to the [golang-nuts mailing list](https://groups.google.com/group/golang-nuts) instead of the issue tracker.
The gophers there will answer or ask you to file an issue if you've tripped over a bug.
## Contributing code
Please read the [Contribution Guidelines](https://golang.org/doc/contribute.html)
before sending patches.
Unless otherwise noted, the Go source files are distributed under
the BSD-style license found in the LICENSE file.

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# This source code was written by the Go contributors.
# The master list of contributors is in the main Go distribution,
# visible at http://tip.golang.org/CONTRIBUTORS.

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Copyright (c) 2009 The Go Authors. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
* Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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# OAuth2 for Go
[![Build Status](https://travis-ci.org/golang/oauth2.svg?branch=master)](https://travis-ci.org/golang/oauth2)
[![GoDoc](https://godoc.org/golang.org/x/oauth2?status.svg)](https://godoc.org/golang.org/x/oauth2)
oauth2 package contains a client implementation for OAuth 2.0 spec.
## Installation
~~~~
go get golang.org/x/oauth2
~~~~
Or you can manually git clone the repository to
`$(go env GOPATH)/src/golang.org/x/oauth2`.
See godoc for further documentation and examples.
* [godoc.org/golang.org/x/oauth2](http://godoc.org/golang.org/x/oauth2)
* [godoc.org/golang.org/x/oauth2/google](http://godoc.org/golang.org/x/oauth2/google)
## App Engine
In change 96e89be (March 2015), we removed the `oauth2.Context2` type in favor
of the [`context.Context`](https://golang.org/x/net/context#Context) type from
the `golang.org/x/net/context` package
This means it's no longer possible to use the "Classic App Engine"
`appengine.Context` type with the `oauth2` package. (You're using
Classic App Engine if you import the package `"appengine"`.)
To work around this, you may use the new `"google.golang.org/appengine"`
package. This package has almost the same API as the `"appengine"` package,
but it can be fetched with `go get` and used on "Managed VMs" and well as
Classic App Engine.
See the [new `appengine` package's readme](https://github.com/golang/appengine#updating-a-go-app-engine-app)
for information on updating your app.
If you don't want to update your entire app to use the new App Engine packages,
you may use both sets of packages in parallel, using only the new packages
with the `oauth2` package.
```go
import (
"golang.org/x/net/context"
"golang.org/x/oauth2"
"golang.org/x/oauth2/google"
newappengine "google.golang.org/appengine"
newurlfetch "google.golang.org/appengine/urlfetch"
"appengine"
)
func handler(w http.ResponseWriter, r *http.Request) {
var c appengine.Context = appengine.NewContext(r)
c.Infof("Logging a message with the old package")
var ctx context.Context = newappengine.NewContext(r)
client := &http.Client{
Transport: &oauth2.Transport{
Source: google.AppEngineTokenSource(ctx, "scope"),
Base: &newurlfetch.Transport{Context: ctx},
},
}
client.Get("...")
}
```
## Report Issues / Send Patches
This repository uses Gerrit for code changes. To learn how to submit changes to
this repository, see https://golang.org/doc/contribute.html.
The main issue tracker for the oauth2 repository is located at
https://github.com/golang/oauth2/issues.

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// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package google
import (
"sort"
"strings"
"sync"
"time"
"golang.org/x/net/context"
"golang.org/x/oauth2"
)
// appengineFlex is set at init time by appengineflex_hook.go. If true, we are on App Engine Flex.
var appengineFlex bool
// Set at init time by appengine_hook.go. If nil, we're not on App Engine.
var appengineTokenFunc func(c context.Context, scopes ...string) (token string, expiry time.Time, err error)
// Set at init time by appengine_hook.go. If nil, we're not on App Engine.
var appengineAppIDFunc func(c context.Context) string
// AppEngineTokenSource returns a token source that fetches tokens
// issued to the current App Engine application's service account.
// If you are implementing a 3-legged OAuth 2.0 flow on App Engine
// that involves user accounts, see oauth2.Config instead.
//
// The provided context must have come from appengine.NewContext.
func AppEngineTokenSource(ctx context.Context, scope ...string) oauth2.TokenSource {
if appengineTokenFunc == nil {
panic("google: AppEngineTokenSource can only be used on App Engine.")
}
scopes := append([]string{}, scope...)
sort.Strings(scopes)
return &appEngineTokenSource{
ctx: ctx,
scopes: scopes,
key: strings.Join(scopes, " "),
}
}
// aeTokens helps the fetched tokens to be reused until their expiration.
var (
aeTokensMu sync.Mutex
aeTokens = make(map[string]*tokenLock) // key is space-separated scopes
)
type tokenLock struct {
mu sync.Mutex // guards t; held while fetching or updating t
t *oauth2.Token
}
type appEngineTokenSource struct {
ctx context.Context
scopes []string
key string // to aeTokens map; space-separated scopes
}
func (ts *appEngineTokenSource) Token() (*oauth2.Token, error) {
if appengineTokenFunc == nil {
panic("google: AppEngineTokenSource can only be used on App Engine.")
}
aeTokensMu.Lock()
tok, ok := aeTokens[ts.key]
if !ok {
tok = &tokenLock{}
aeTokens[ts.key] = tok
}
aeTokensMu.Unlock()
tok.mu.Lock()
defer tok.mu.Unlock()
if tok.t.Valid() {
return tok.t, nil
}
access, exp, err := appengineTokenFunc(ts.ctx, ts.scopes...)
if err != nil {
return nil, err
}
tok.t = &oauth2.Token{
AccessToken: access,
Expiry: exp,
}
return tok.t, nil
}

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// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build appengine appenginevm
package google
import "google.golang.org/appengine"
func init() {
appengineTokenFunc = appengine.AccessToken
appengineAppIDFunc = appengine.AppID
}

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// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build appenginevm
package google
func init() {
appengineFlex = true // Flex doesn't support appengine.AccessToken; depend on metadata server.
}

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// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package google
import (
"encoding/json"
"fmt"
"io/ioutil"
"net/http"
"os"
"path/filepath"
"runtime"
"cloud.google.com/go/compute/metadata"
"golang.org/x/net/context"
"golang.org/x/oauth2"
)
// DefaultClient returns an HTTP Client that uses the
// DefaultTokenSource to obtain authentication credentials.
func DefaultClient(ctx context.Context, scope ...string) (*http.Client, error) {
ts, err := DefaultTokenSource(ctx, scope...)
if err != nil {
return nil, err
}
return oauth2.NewClient(ctx, ts), nil
}
// DefaultTokenSource returns the token source for
// "Application Default Credentials".
// It is a shortcut for FindDefaultCredentials(ctx, scope).TokenSource.
func DefaultTokenSource(ctx context.Context, scope ...string) (oauth2.TokenSource, error) {
creds, err := FindDefaultCredentials(ctx, scope...)
if err != nil {
return nil, err
}
return creds.TokenSource, nil
}
// Common implementation for FindDefaultCredentials.
func findDefaultCredentials(ctx context.Context, scopes []string) (*DefaultCredentials, error) {
// First, try the environment variable.
const envVar = "GOOGLE_APPLICATION_CREDENTIALS"
if filename := os.Getenv(envVar); filename != "" {
creds, err := readCredentialsFile(ctx, filename, scopes)
if err != nil {
return nil, fmt.Errorf("google: error getting credentials using %v environment variable: %v", envVar, err)
}
return creds, nil
}
// Second, try a well-known file.
filename := wellKnownFile()
if creds, err := readCredentialsFile(ctx, filename, scopes); err == nil {
return creds, nil
} else if !os.IsNotExist(err) {
return nil, fmt.Errorf("google: error getting credentials using well-known file (%v): %v", filename, err)
}
// Third, if we're on Google App Engine use those credentials.
if appengineTokenFunc != nil && !appengineFlex {
return &DefaultCredentials{
ProjectID: appengineAppIDFunc(ctx),
TokenSource: AppEngineTokenSource(ctx, scopes...),
}, nil
}
// Fourth, if we're on Google Compute Engine use the metadata server.
if metadata.OnGCE() {
id, _ := metadata.ProjectID()
return &DefaultCredentials{
ProjectID: id,
TokenSource: ComputeTokenSource(""),
}, nil
}
// None are found; return helpful error.
const url = "https://developers.google.com/accounts/docs/application-default-credentials"
return nil, fmt.Errorf("google: could not find default credentials. See %v for more information.", url)
}
// Common implementation for CredentialsFromJSON.
func credentialsFromJSON(ctx context.Context, jsonData []byte, scopes []string) (*DefaultCredentials, error) {
var f credentialsFile
if err := json.Unmarshal(jsonData, &f); err != nil {
return nil, err
}
ts, err := f.tokenSource(ctx, append([]string(nil), scopes...))
if err != nil {
return nil, err
}
return &DefaultCredentials{
ProjectID: f.ProjectID,
TokenSource: ts,
JSON: jsonData,
}, nil
}
func wellKnownFile() string {
const f = "application_default_credentials.json"
if runtime.GOOS == "windows" {
return filepath.Join(os.Getenv("APPDATA"), "gcloud", f)
}
return filepath.Join(guessUnixHomeDir(), ".config", "gcloud", f)
}
func readCredentialsFile(ctx context.Context, filename string, scopes []string) (*DefaultCredentials, error) {
b, err := ioutil.ReadFile(filename)
if err != nil {
return nil, err
}
return CredentialsFromJSON(ctx, b, scopes...)
}

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// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build go1.9
// Package google provides support for making OAuth2 authorized and authenticated
// HTTP requests to Google APIs. It supports the Web server flow, client-side
// credentials, service accounts, Google Compute Engine service accounts, and Google
// App Engine service accounts.
//
// A brief overview of the package follows. For more information, please read
// https://developers.google.com/accounts/docs/OAuth2
// and
// https://developers.google.com/accounts/docs/application-default-credentials.
//
// OAuth2 Configs
//
// Two functions in this package return golang.org/x/oauth2.Config values from Google credential
// data. Google supports two JSON formats for OAuth2 credentials: one is handled by ConfigFromJSON,
// the other by JWTConfigFromJSON. The returned Config can be used to obtain a TokenSource or
// create an http.Client.
//
//
// Credentials
//
// The Credentials type represents Google credentials, including Application Default
// Credentials.
//
// Use FindDefaultCredentials to obtain Application Default Credentials.
// FindDefaultCredentials looks in some well-known places for a credentials file, and
// will call AppEngineTokenSource or ComputeTokenSource as needed.
//
// DefaultClient and DefaultTokenSource are convenience methods. They first call FindDefaultCredentials,
// then use the credentials to construct an http.Client or an oauth2.TokenSource.
//
// Use CredentialsFromJSON to obtain credentials from either of the two JSON formats
// described in OAuth2 Configs, above. The TokenSource in the returned value is the
// same as the one obtained from the oauth2.Config returned from ConfigFromJSON or
// JWTConfigFromJSON, but the Credentials may contain additional information
// that is useful is some circumstances.
package google // import "golang.org/x/oauth2/google"

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// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build !go1.9
// Package google provides support for making OAuth2 authorized and authenticated
// HTTP requests to Google APIs. It supports the Web server flow, client-side
// credentials, service accounts, Google Compute Engine service accounts, and Google
// App Engine service accounts.
//
// A brief overview of the package follows. For more information, please read
// https://developers.google.com/accounts/docs/OAuth2
// and
// https://developers.google.com/accounts/docs/application-default-credentials.
//
// OAuth2 Configs
//
// Two functions in this package return golang.org/x/oauth2.Config values from Google credential
// data. Google supports two JSON formats for OAuth2 credentials: one is handled by ConfigFromJSON,
// the other by JWTConfigFromJSON. The returned Config can be used to obtain a TokenSource or
// create an http.Client.
//
//
// Credentials
//
// The DefaultCredentials type represents Google Application Default Credentials, as
// well as other forms of credential.
//
// Use FindDefaultCredentials to obtain Application Default Credentials.
// FindDefaultCredentials looks in some well-known places for a credentials file, and
// will call AppEngineTokenSource or ComputeTokenSource as needed.
//
// DefaultClient and DefaultTokenSource are convenience methods. They first call FindDefaultCredentials,
// then use the credentials to construct an http.Client or an oauth2.TokenSource.
//
// Use CredentialsFromJSON to obtain credentials from either of the two JSON
// formats described in OAuth2 Configs, above. (The DefaultCredentials returned may
// not be "Application Default Credentials".) The TokenSource in the returned value
// is the same as the one obtained from the oauth2.Config returned from
// ConfigFromJSON or JWTConfigFromJSON, but the DefaultCredentials may contain
// additional information that is useful is some circumstances.
package google // import "golang.org/x/oauth2/google"

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// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build go1.9
package google
import (
"golang.org/x/net/context"
"golang.org/x/oauth2"
)
// Credentials holds Google credentials, including "Application Default Credentials".
// For more details, see:
// https://developers.google.com/accounts/docs/application-default-credentials
type Credentials struct {
ProjectID string // may be empty
TokenSource oauth2.TokenSource
// JSON contains the raw bytes from a JSON credentials file.
// This field may be nil if authentication is provided by the
// environment and not with a credentials file, e.g. when code is
// running on Google Cloud Platform.
JSON []byte
}
// DefaultCredentials is the old name of Credentials.
//
// Deprecated: use Credentials instead.
type DefaultCredentials = Credentials
// FindDefaultCredentials searches for "Application Default Credentials".
//
// It looks for credentials in the following places,
// preferring the first location found:
//
// 1. A JSON file whose path is specified by the
// GOOGLE_APPLICATION_CREDENTIALS environment variable.
// 2. A JSON file in a location known to the gcloud command-line tool.
// On Windows, this is %APPDATA%/gcloud/application_default_credentials.json.
// On other systems, $HOME/.config/gcloud/application_default_credentials.json.
// 3. On Google App Engine it uses the appengine.AccessToken function.
// 4. On Google Compute Engine and Google App Engine Managed VMs, it fetches
// credentials from the metadata server.
// (In this final case any provided scopes are ignored.)
func FindDefaultCredentials(ctx context.Context, scopes ...string) (*Credentials, error) {
return findDefaultCredentials(ctx, scopes)
}
// CredentialsFromJSON obtains Google credentials from a JSON value. The JSON can
// represent either a Google Developers Console client_credentials.json file (as in
// ConfigFromJSON) or a Google Developers service account key file (as in
// JWTConfigFromJSON).
func CredentialsFromJSON(ctx context.Context, jsonData []byte, scopes ...string) (*Credentials, error) {
return credentialsFromJSON(ctx, jsonData, scopes)
}

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// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package google
import (
"encoding/json"
"errors"
"fmt"
"strings"
"time"
"cloud.google.com/go/compute/metadata"
"golang.org/x/net/context"
"golang.org/x/oauth2"
"golang.org/x/oauth2/jwt"
)
// Endpoint is Google's OAuth 2.0 endpoint.
var Endpoint = oauth2.Endpoint{
AuthURL: "https://accounts.google.com/o/oauth2/auth",
TokenURL: "https://accounts.google.com/o/oauth2/token",
}
// JWTTokenURL is Google's OAuth 2.0 token URL to use with the JWT flow.
const JWTTokenURL = "https://accounts.google.com/o/oauth2/token"
// ConfigFromJSON uses a Google Developers Console client_credentials.json
// file to construct a config.
// client_credentials.json can be downloaded from
// https://console.developers.google.com, under "Credentials". Download the Web
// application credentials in the JSON format and provide the contents of the
// file as jsonKey.
func ConfigFromJSON(jsonKey []byte, scope ...string) (*oauth2.Config, error) {
type cred struct {
ClientID string `json:"client_id"`
ClientSecret string `json:"client_secret"`
RedirectURIs []string `json:"redirect_uris"`
AuthURI string `json:"auth_uri"`
TokenURI string `json:"token_uri"`
}
var j struct {
Web *cred `json:"web"`
Installed *cred `json:"installed"`
}
if err := json.Unmarshal(jsonKey, &j); err != nil {
return nil, err
}
var c *cred
switch {
case j.Web != nil:
c = j.Web
case j.Installed != nil:
c = j.Installed
default:
return nil, fmt.Errorf("oauth2/google: no credentials found")
}
if len(c.RedirectURIs) < 1 {
return nil, errors.New("oauth2/google: missing redirect URL in the client_credentials.json")
}
return &oauth2.Config{
ClientID: c.ClientID,
ClientSecret: c.ClientSecret,
RedirectURL: c.RedirectURIs[0],
Scopes: scope,
Endpoint: oauth2.Endpoint{
AuthURL: c.AuthURI,
TokenURL: c.TokenURI,
},
}, nil
}
// JWTConfigFromJSON uses a Google Developers service account JSON key file to read
// the credentials that authorize and authenticate the requests.
// Create a service account on "Credentials" for your project at
// https://console.developers.google.com to download a JSON key file.
func JWTConfigFromJSON(jsonKey []byte, scope ...string) (*jwt.Config, error) {
var f credentialsFile
if err := json.Unmarshal(jsonKey, &f); err != nil {
return nil, err
}
if f.Type != serviceAccountKey {
return nil, fmt.Errorf("google: read JWT from JSON credentials: 'type' field is %q (expected %q)", f.Type, serviceAccountKey)
}
scope = append([]string(nil), scope...) // copy
return f.jwtConfig(scope), nil
}
// JSON key file types.
const (
serviceAccountKey = "service_account"
userCredentialsKey = "authorized_user"
)
// credentialsFile is the unmarshalled representation of a credentials file.
type credentialsFile struct {
Type string `json:"type"` // serviceAccountKey or userCredentialsKey
// Service Account fields
ClientEmail string `json:"client_email"`
PrivateKeyID string `json:"private_key_id"`
PrivateKey string `json:"private_key"`
TokenURL string `json:"token_uri"`
ProjectID string `json:"project_id"`
// User Credential fields
// (These typically come from gcloud auth.)
ClientSecret string `json:"client_secret"`
ClientID string `json:"client_id"`
RefreshToken string `json:"refresh_token"`
}
func (f *credentialsFile) jwtConfig(scopes []string) *jwt.Config {
cfg := &jwt.Config{
Email: f.ClientEmail,
PrivateKey: []byte(f.PrivateKey),
PrivateKeyID: f.PrivateKeyID,
Scopes: scopes,
TokenURL: f.TokenURL,
}
if cfg.TokenURL == "" {
cfg.TokenURL = JWTTokenURL
}
return cfg
}
func (f *credentialsFile) tokenSource(ctx context.Context, scopes []string) (oauth2.TokenSource, error) {
switch f.Type {
case serviceAccountKey:
cfg := f.jwtConfig(scopes)
return cfg.TokenSource(ctx), nil
case userCredentialsKey:
cfg := &oauth2.Config{
ClientID: f.ClientID,
ClientSecret: f.ClientSecret,
Scopes: scopes,
Endpoint: Endpoint,
}
tok := &oauth2.Token{RefreshToken: f.RefreshToken}
return cfg.TokenSource(ctx, tok), nil
case "":
return nil, errors.New("missing 'type' field in credentials")
default:
return nil, fmt.Errorf("unknown credential type: %q", f.Type)
}
}
// ComputeTokenSource returns a token source that fetches access tokens
// from Google Compute Engine (GCE)'s metadata server. It's only valid to use
// this token source if your program is running on a GCE instance.
// If no account is specified, "default" is used.
// Further information about retrieving access tokens from the GCE metadata
// server can be found at https://cloud.google.com/compute/docs/authentication.
func ComputeTokenSource(account string) oauth2.TokenSource {
return oauth2.ReuseTokenSource(nil, computeSource{account: account})
}
type computeSource struct {
account string
}
func (cs computeSource) Token() (*oauth2.Token, error) {
if !metadata.OnGCE() {
return nil, errors.New("oauth2/google: can't get a token from the metadata service; not running on GCE")
}
acct := cs.account
if acct == "" {
acct = "default"
}
tokenJSON, err := metadata.Get("instance/service-accounts/" + acct + "/token")
if err != nil {
return nil, err
}
var res struct {
AccessToken string `json:"access_token"`
ExpiresInSec int `json:"expires_in"`
TokenType string `json:"token_type"`
}
err = json.NewDecoder(strings.NewReader(tokenJSON)).Decode(&res)
if err != nil {
return nil, fmt.Errorf("oauth2/google: invalid token JSON from metadata: %v", err)
}
if res.ExpiresInSec == 0 || res.AccessToken == "" {
return nil, fmt.Errorf("oauth2/google: incomplete token received from metadata")
}
return &oauth2.Token{
AccessToken: res.AccessToken,
TokenType: res.TokenType,
Expiry: time.Now().Add(time.Duration(res.ExpiresInSec) * time.Second),
}, nil
}

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// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package google
import (
"crypto/rsa"
"fmt"
"time"
"golang.org/x/oauth2"
"golang.org/x/oauth2/internal"
"golang.org/x/oauth2/jws"
)
// JWTAccessTokenSourceFromJSON uses a Google Developers service account JSON
// key file to read the credentials that authorize and authenticate the
// requests, and returns a TokenSource that does not use any OAuth2 flow but
// instead creates a JWT and sends that as the access token.
// The audience is typically a URL that specifies the scope of the credentials.
//
// Note that this is not a standard OAuth flow, but rather an
// optimization supported by a few Google services.
// Unless you know otherwise, you should use JWTConfigFromJSON instead.
func JWTAccessTokenSourceFromJSON(jsonKey []byte, audience string) (oauth2.TokenSource, error) {
cfg, err := JWTConfigFromJSON(jsonKey)
if err != nil {
return nil, fmt.Errorf("google: could not parse JSON key: %v", err)
}
pk, err := internal.ParseKey(cfg.PrivateKey)
if err != nil {
return nil, fmt.Errorf("google: could not parse key: %v", err)
}
ts := &jwtAccessTokenSource{
email: cfg.Email,
audience: audience,
pk: pk,
pkID: cfg.PrivateKeyID,
}
tok, err := ts.Token()
if err != nil {
return nil, err
}
return oauth2.ReuseTokenSource(tok, ts), nil
}
type jwtAccessTokenSource struct {
email, audience string
pk *rsa.PrivateKey
pkID string
}
func (ts *jwtAccessTokenSource) Token() (*oauth2.Token, error) {
iat := time.Now()
exp := iat.Add(time.Hour)
cs := &jws.ClaimSet{
Iss: ts.email,
Sub: ts.email,
Aud: ts.audience,
Iat: iat.Unix(),
Exp: exp.Unix(),
}
hdr := &jws.Header{
Algorithm: "RS256",
Typ: "JWT",
KeyID: string(ts.pkID),
}
msg, err := jws.Encode(hdr, cs, ts.pk)
if err != nil {
return nil, fmt.Errorf("google: could not encode JWT: %v", err)
}
return &oauth2.Token{AccessToken: msg, TokenType: "Bearer", Expiry: exp}, nil
}

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// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build !go1.9
package google
import (
"golang.org/x/net/context"
"golang.org/x/oauth2"
)
// DefaultCredentials holds Google credentials, including "Application Default Credentials".
// For more details, see:
// https://developers.google.com/accounts/docs/application-default-credentials
type DefaultCredentials struct {
ProjectID string // may be empty
TokenSource oauth2.TokenSource
// JSON contains the raw bytes from a JSON credentials file.
// This field may be nil if authentication is provided by the
// environment and not with a credentials file, e.g. when code is
// running on Google Cloud Platform.
JSON []byte
}
// FindDefaultCredentials searches for "Application Default Credentials".
//
// It looks for credentials in the following places,
// preferring the first location found:
//
// 1. A JSON file whose path is specified by the
// GOOGLE_APPLICATION_CREDENTIALS environment variable.
// 2. A JSON file in a location known to the gcloud command-line tool.
// On Windows, this is %APPDATA%/gcloud/application_default_credentials.json.
// On other systems, $HOME/.config/gcloud/application_default_credentials.json.
// 3. On Google App Engine it uses the appengine.AccessToken function.
// 4. On Google Compute Engine and Google App Engine Managed VMs, it fetches
// credentials from the metadata server.
// (In this final case any provided scopes are ignored.)
func FindDefaultCredentials(ctx context.Context, scopes ...string) (*DefaultCredentials, error) {
return findDefaultCredentials(ctx, scopes)
}
// CredentialsFromJSON obtains Google credentials from a JSON value. The JSON can
// represent either a Google Developers Console client_credentials.json file (as in
// ConfigFromJSON) or a Google Developers service account key file (as in
// JWTConfigFromJSON).
//
// Note: despite the name, the returned credentials may not be Application Default Credentials.
func CredentialsFromJSON(ctx context.Context, jsonData []byte, scopes ...string) (*DefaultCredentials, error) {
return credentialsFromJSON(ctx, jsonData, scopes)
}

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// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package google
import (
"bufio"
"encoding/json"
"errors"
"fmt"
"io"
"net/http"
"os"
"os/user"
"path/filepath"
"runtime"
"strings"
"time"
"golang.org/x/net/context"
"golang.org/x/oauth2"
)
type sdkCredentials struct {
Data []struct {
Credential struct {
ClientID string `json:"client_id"`
ClientSecret string `json:"client_secret"`
AccessToken string `json:"access_token"`
RefreshToken string `json:"refresh_token"`
TokenExpiry *time.Time `json:"token_expiry"`
} `json:"credential"`
Key struct {
Account string `json:"account"`
Scope string `json:"scope"`
} `json:"key"`
}
}
// An SDKConfig provides access to tokens from an account already
// authorized via the Google Cloud SDK.
type SDKConfig struct {
conf oauth2.Config
initialToken *oauth2.Token
}
// NewSDKConfig creates an SDKConfig for the given Google Cloud SDK
// account. If account is empty, the account currently active in
// Google Cloud SDK properties is used.
// Google Cloud SDK credentials must be created by running `gcloud auth`
// before using this function.
// The Google Cloud SDK is available at https://cloud.google.com/sdk/.
func NewSDKConfig(account string) (*SDKConfig, error) {
configPath, err := sdkConfigPath()
if err != nil {
return nil, fmt.Errorf("oauth2/google: error getting SDK config path: %v", err)
}
credentialsPath := filepath.Join(configPath, "credentials")
f, err := os.Open(credentialsPath)
if err != nil {
return nil, fmt.Errorf("oauth2/google: failed to load SDK credentials: %v", err)
}
defer f.Close()
var c sdkCredentials
if err := json.NewDecoder(f).Decode(&c); err != nil {
return nil, fmt.Errorf("oauth2/google: failed to decode SDK credentials from %q: %v", credentialsPath, err)
}
if len(c.Data) == 0 {
return nil, fmt.Errorf("oauth2/google: no credentials found in %q, run `gcloud auth login` to create one", credentialsPath)
}
if account == "" {
propertiesPath := filepath.Join(configPath, "properties")
f, err := os.Open(propertiesPath)
if err != nil {
return nil, fmt.Errorf("oauth2/google: failed to load SDK properties: %v", err)
}
defer f.Close()
ini, err := parseINI(f)
if err != nil {
return nil, fmt.Errorf("oauth2/google: failed to parse SDK properties %q: %v", propertiesPath, err)
}
core, ok := ini["core"]
if !ok {
return nil, fmt.Errorf("oauth2/google: failed to find [core] section in %v", ini)
}
active, ok := core["account"]
if !ok {
return nil, fmt.Errorf("oauth2/google: failed to find %q attribute in %v", "account", core)
}
account = active
}
for _, d := range c.Data {
if account == "" || d.Key.Account == account {
if d.Credential.AccessToken == "" && d.Credential.RefreshToken == "" {
return nil, fmt.Errorf("oauth2/google: no token available for account %q", account)
}
var expiry time.Time
if d.Credential.TokenExpiry != nil {
expiry = *d.Credential.TokenExpiry
}
return &SDKConfig{
conf: oauth2.Config{
ClientID: d.Credential.ClientID,
ClientSecret: d.Credential.ClientSecret,
Scopes: strings.Split(d.Key.Scope, " "),
Endpoint: Endpoint,
RedirectURL: "oob",
},
initialToken: &oauth2.Token{
AccessToken: d.Credential.AccessToken,
RefreshToken: d.Credential.RefreshToken,
Expiry: expiry,
},
}, nil
}
}
return nil, fmt.Errorf("oauth2/google: no such credentials for account %q", account)
}
// Client returns an HTTP client using Google Cloud SDK credentials to
// authorize requests. The token will auto-refresh as necessary. The
// underlying http.RoundTripper will be obtained using the provided
// context. The returned client and its Transport should not be
// modified.
func (c *SDKConfig) Client(ctx context.Context) *http.Client {
return &http.Client{
Transport: &oauth2.Transport{
Source: c.TokenSource(ctx),
},
}
}
// TokenSource returns an oauth2.TokenSource that retrieve tokens from
// Google Cloud SDK credentials using the provided context.
// It will returns the current access token stored in the credentials,
// and refresh it when it expires, but it won't update the credentials
// with the new access token.
func (c *SDKConfig) TokenSource(ctx context.Context) oauth2.TokenSource {
return c.conf.TokenSource(ctx, c.initialToken)
}
// Scopes are the OAuth 2.0 scopes the current account is authorized for.
func (c *SDKConfig) Scopes() []string {
return c.conf.Scopes
}
func parseINI(ini io.Reader) (map[string]map[string]string, error) {
result := map[string]map[string]string{
"": {}, // root section
}
scanner := bufio.NewScanner(ini)
currentSection := ""
for scanner.Scan() {
line := strings.TrimSpace(scanner.Text())
if strings.HasPrefix(line, ";") {
// comment.
continue
}
if strings.HasPrefix(line, "[") && strings.HasSuffix(line, "]") {
currentSection = strings.TrimSpace(line[1 : len(line)-1])
result[currentSection] = map[string]string{}
continue
}
parts := strings.SplitN(line, "=", 2)
if len(parts) == 2 && parts[0] != "" {
result[currentSection][strings.TrimSpace(parts[0])] = strings.TrimSpace(parts[1])
}
}
if err := scanner.Err(); err != nil {
return nil, fmt.Errorf("error scanning ini: %v", err)
}
return result, nil
}
// sdkConfigPath tries to guess where the gcloud config is located.
// It can be overridden during tests.
var sdkConfigPath = func() (string, error) {
if runtime.GOOS == "windows" {
return filepath.Join(os.Getenv("APPDATA"), "gcloud"), nil
}
homeDir := guessUnixHomeDir()
if homeDir == "" {
return "", errors.New("unable to get current user home directory: os/user lookup failed; $HOME is empty")
}
return filepath.Join(homeDir, ".config", "gcloud"), nil
}
func guessUnixHomeDir() string {
// Prefer $HOME over user.Current due to glibc bug: golang.org/issue/13470
if v := os.Getenv("HOME"); v != "" {
return v
}
// Else, fall back to user.Current:
if u, err := user.Current(); err == nil {
return u.HomeDir
}
return ""
}

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// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build appengine
package internal
import "google.golang.org/appengine/urlfetch"
func init() {
appengineClientHook = urlfetch.Client
}

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// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package internal contains support packages for oauth2 package.
package internal

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// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package internal
import (
"crypto/rsa"
"crypto/x509"
"encoding/pem"
"errors"
"fmt"
)
// ParseKey converts the binary contents of a private key file
// to an *rsa.PrivateKey. It detects whether the private key is in a
// PEM container or not. If so, it extracts the the private key
// from PEM container before conversion. It only supports PEM
// containers with no passphrase.
func ParseKey(key []byte) (*rsa.PrivateKey, error) {
block, _ := pem.Decode(key)
if block != nil {
key = block.Bytes
}
parsedKey, err := x509.ParsePKCS8PrivateKey(key)
if err != nil {
parsedKey, err = x509.ParsePKCS1PrivateKey(key)
if err != nil {
return nil, fmt.Errorf("private key should be a PEM or plain PKSC1 or PKCS8; parse error: %v", err)
}
}
parsed, ok := parsedKey.(*rsa.PrivateKey)
if !ok {
return nil, errors.New("private key is invalid")
}
return parsed, nil
}

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// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package internal
import (
"encoding/json"
"errors"
"fmt"
"io"
"io/ioutil"
"mime"
"net/http"
"net/url"
"strconv"
"strings"
"time"
"golang.org/x/net/context"
"golang.org/x/net/context/ctxhttp"
)
// Token represents the credentials used to authorize
// the requests to access protected resources on the OAuth 2.0
// provider's backend.
//
// This type is a mirror of oauth2.Token and exists to break
// an otherwise-circular dependency. Other internal packages
// should convert this Token into an oauth2.Token before use.
type Token struct {
// AccessToken is the token that authorizes and authenticates
// the requests.
AccessToken string
// TokenType is the type of token.
// The Type method returns either this or "Bearer", the default.
TokenType string
// RefreshToken is a token that's used by the application
// (as opposed to the user) to refresh the access token
// if it expires.
RefreshToken string
// Expiry is the optional expiration time of the access token.
//
// If zero, TokenSource implementations will reuse the same
// token forever and RefreshToken or equivalent
// mechanisms for that TokenSource will not be used.
Expiry time.Time
// Raw optionally contains extra metadata from the server
// when updating a token.
Raw interface{}
}
// tokenJSON is the struct representing the HTTP response from OAuth2
// providers returning a token in JSON form.
type tokenJSON struct {
AccessToken string `json:"access_token"`
TokenType string `json:"token_type"`
RefreshToken string `json:"refresh_token"`
ExpiresIn expirationTime `json:"expires_in"` // at least PayPal returns string, while most return number
Expires expirationTime `json:"expires"` // broken Facebook spelling of expires_in
}
func (e *tokenJSON) expiry() (t time.Time) {
if v := e.ExpiresIn; v != 0 {
return time.Now().Add(time.Duration(v) * time.Second)
}
if v := e.Expires; v != 0 {
return time.Now().Add(time.Duration(v) * time.Second)
}
return
}
type expirationTime int32
func (e *expirationTime) UnmarshalJSON(b []byte) error {
var n json.Number
err := json.Unmarshal(b, &n)
if err != nil {
return err
}
i, err := n.Int64()
if err != nil {
return err
}
*e = expirationTime(i)
return nil
}
var brokenAuthHeaderProviders = []string{
"https://accounts.google.com/",
"https://api.codeswholesale.com/oauth/token",
"https://api.dropbox.com/",
"https://api.dropboxapi.com/",
"https://api.instagram.com/",
"https://api.netatmo.net/",
"https://api.odnoklassniki.ru/",
"https://api.pushbullet.com/",
"https://api.soundcloud.com/",
"https://api.twitch.tv/",
"https://id.twitch.tv/",
"https://app.box.com/",
"https://api.box.com/",
"https://connect.stripe.com/",
"https://login.mailchimp.com/",
"https://login.microsoftonline.com/",
"https://login.salesforce.com/",
"https://login.windows.net",
"https://login.live.com/",
"https://oauth.sandbox.trainingpeaks.com/",
"https://oauth.trainingpeaks.com/",
"https://oauth.vk.com/",
"https://openapi.baidu.com/",
"https://slack.com/",
"https://test-sandbox.auth.corp.google.com",
"https://test.salesforce.com/",
"https://user.gini.net/",
"https://www.douban.com/",
"https://www.googleapis.com/",
"https://www.linkedin.com/",
"https://www.strava.com/oauth/",
"https://www.wunderlist.com/oauth/",
"https://api.patreon.com/",
"https://sandbox.codeswholesale.com/oauth/token",
"https://api.sipgate.com/v1/authorization/oauth",
"https://api.medium.com/v1/tokens",
"https://log.finalsurge.com/oauth/token",
"https://multisport.todaysplan.com.au/rest/oauth/access_token",
"https://whats.todaysplan.com.au/rest/oauth/access_token",
"https://stackoverflow.com/oauth/access_token",
"https://account.health.nokia.com",
}
// brokenAuthHeaderDomains lists broken providers that issue dynamic endpoints.
var brokenAuthHeaderDomains = []string{
".auth0.com",
".force.com",
".myshopify.com",
".okta.com",
".oktapreview.com",
}
func RegisterBrokenAuthHeaderProvider(tokenURL string) {
brokenAuthHeaderProviders = append(brokenAuthHeaderProviders, tokenURL)
}
// providerAuthHeaderWorks reports whether the OAuth2 server identified by the tokenURL
// implements the OAuth2 spec correctly
// See https://code.google.com/p/goauth2/issues/detail?id=31 for background.
// In summary:
// - Reddit only accepts client secret in the Authorization header
// - Dropbox accepts either it in URL param or Auth header, but not both.
// - Google only accepts URL param (not spec compliant?), not Auth header
// - Stripe only accepts client secret in Auth header with Bearer method, not Basic
func providerAuthHeaderWorks(tokenURL string) bool {
for _, s := range brokenAuthHeaderProviders {
if strings.HasPrefix(tokenURL, s) {
// Some sites fail to implement the OAuth2 spec fully.
return false
}
}
if u, err := url.Parse(tokenURL); err == nil {
for _, s := range brokenAuthHeaderDomains {
if strings.HasSuffix(u.Host, s) {
return false
}
}
}
// Assume the provider implements the spec properly
// otherwise. We can add more exceptions as they're
// discovered. We will _not_ be adding configurable hooks
// to this package to let users select server bugs.
return true
}
func RetrieveToken(ctx context.Context, clientID, clientSecret, tokenURL string, v url.Values) (*Token, error) {
bustedAuth := !providerAuthHeaderWorks(tokenURL)
if bustedAuth {
if clientID != "" {
v.Set("client_id", clientID)
}
if clientSecret != "" {
v.Set("client_secret", clientSecret)
}
}
req, err := http.NewRequest("POST", tokenURL, strings.NewReader(v.Encode()))
if err != nil {
return nil, err
}
req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
if !bustedAuth {
req.SetBasicAuth(url.QueryEscape(clientID), url.QueryEscape(clientSecret))
}
r, err := ctxhttp.Do(ctx, ContextClient(ctx), req)
if err != nil {
return nil, err
}
defer r.Body.Close()
body, err := ioutil.ReadAll(io.LimitReader(r.Body, 1<<20))
if err != nil {
return nil, fmt.Errorf("oauth2: cannot fetch token: %v", err)
}
if code := r.StatusCode; code < 200 || code > 299 {
return nil, &RetrieveError{
Response: r,
Body: body,
}
}
var token *Token
content, _, _ := mime.ParseMediaType(r.Header.Get("Content-Type"))
switch content {
case "application/x-www-form-urlencoded", "text/plain":
vals, err := url.ParseQuery(string(body))
if err != nil {
return nil, err
}
token = &Token{
AccessToken: vals.Get("access_token"),
TokenType: vals.Get("token_type"),
RefreshToken: vals.Get("refresh_token"),
Raw: vals,
}
e := vals.Get("expires_in")
if e == "" {
// TODO(jbd): Facebook's OAuth2 implementation is broken and
// returns expires_in field in expires. Remove the fallback to expires,
// when Facebook fixes their implementation.
e = vals.Get("expires")
}
expires, _ := strconv.Atoi(e)
if expires != 0 {
token.Expiry = time.Now().Add(time.Duration(expires) * time.Second)
}
default:
var tj tokenJSON
if err = json.Unmarshal(body, &tj); err != nil {
return nil, err
}
token = &Token{
AccessToken: tj.AccessToken,
TokenType: tj.TokenType,
RefreshToken: tj.RefreshToken,
Expiry: tj.expiry(),
Raw: make(map[string]interface{}),
}
json.Unmarshal(body, &token.Raw) // no error checks for optional fields
}
// Don't overwrite `RefreshToken` with an empty value
// if this was a token refreshing request.
if token.RefreshToken == "" {
token.RefreshToken = v.Get("refresh_token")
}
if token.AccessToken == "" {
return token, errors.New("oauth2: server response missing access_token")
}
return token, nil
}
type RetrieveError struct {
Response *http.Response
Body []byte
}
func (r *RetrieveError) Error() string {
return fmt.Sprintf("oauth2: cannot fetch token: %v\nResponse: %s", r.Response.Status, r.Body)
}

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// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package internal
import (
"net/http"
"golang.org/x/net/context"
)
// HTTPClient is the context key to use with golang.org/x/net/context's
// WithValue function to associate an *http.Client value with a context.
var HTTPClient ContextKey
// ContextKey is just an empty struct. It exists so HTTPClient can be
// an immutable public variable with a unique type. It's immutable
// because nobody else can create a ContextKey, being unexported.
type ContextKey struct{}
var appengineClientHook func(context.Context) *http.Client
func ContextClient(ctx context.Context) *http.Client {
if ctx != nil {
if hc, ok := ctx.Value(HTTPClient).(*http.Client); ok {
return hc
}
}
if appengineClientHook != nil {
return appengineClientHook(ctx)
}
return http.DefaultClient
}

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// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package jws provides a partial implementation
// of JSON Web Signature encoding and decoding.
// It exists to support the golang.org/x/oauth2 package.
//
// See RFC 7515.
//
// Deprecated: this package is not intended for public use and might be
// removed in the future. It exists for internal use only.
// Please switch to another JWS package or copy this package into your own
// source tree.
package jws // import "golang.org/x/oauth2/jws"
import (
"bytes"
"crypto"
"crypto/rand"
"crypto/rsa"
"crypto/sha256"
"encoding/base64"
"encoding/json"
"errors"
"fmt"
"strings"
"time"
)
// ClaimSet contains information about the JWT signature including the
// permissions being requested (scopes), the target of the token, the issuer,
// the time the token was issued, and the lifetime of the token.
type ClaimSet struct {
Iss string `json:"iss"` // email address of the client_id of the application making the access token request
Scope string `json:"scope,omitempty"` // space-delimited list of the permissions the application requests
Aud string `json:"aud"` // descriptor of the intended target of the assertion (Optional).
Exp int64 `json:"exp"` // the expiration time of the assertion (seconds since Unix epoch)
Iat int64 `json:"iat"` // the time the assertion was issued (seconds since Unix epoch)
Typ string `json:"typ,omitempty"` // token type (Optional).
// Email for which the application is requesting delegated access (Optional).
Sub string `json:"sub,omitempty"`
// The old name of Sub. Client keeps setting Prn to be
// complaint with legacy OAuth 2.0 providers. (Optional)
Prn string `json:"prn,omitempty"`
// See http://tools.ietf.org/html/draft-jones-json-web-token-10#section-4.3
// This array is marshalled using custom code (see (c *ClaimSet) encode()).
PrivateClaims map[string]interface{} `json:"-"`
}
func (c *ClaimSet) encode() (string, error) {
// Reverting time back for machines whose time is not perfectly in sync.
// If client machine's time is in the future according
// to Google servers, an access token will not be issued.
now := time.Now().Add(-10 * time.Second)
if c.Iat == 0 {
c.Iat = now.Unix()
}
if c.Exp == 0 {
c.Exp = now.Add(time.Hour).Unix()
}
if c.Exp < c.Iat {
return "", fmt.Errorf("jws: invalid Exp = %v; must be later than Iat = %v", c.Exp, c.Iat)
}
b, err := json.Marshal(c)
if err != nil {
return "", err
}
if len(c.PrivateClaims) == 0 {
return base64.RawURLEncoding.EncodeToString(b), nil
}
// Marshal private claim set and then append it to b.
prv, err := json.Marshal(c.PrivateClaims)
if err != nil {
return "", fmt.Errorf("jws: invalid map of private claims %v", c.PrivateClaims)
}
// Concatenate public and private claim JSON objects.
if !bytes.HasSuffix(b, []byte{'}'}) {
return "", fmt.Errorf("jws: invalid JSON %s", b)
}
if !bytes.HasPrefix(prv, []byte{'{'}) {
return "", fmt.Errorf("jws: invalid JSON %s", prv)
}
b[len(b)-1] = ',' // Replace closing curly brace with a comma.
b = append(b, prv[1:]...) // Append private claims.
return base64.RawURLEncoding.EncodeToString(b), nil
}
// Header represents the header for the signed JWS payloads.
type Header struct {
// The algorithm used for signature.
Algorithm string `json:"alg"`
// Represents the token type.
Typ string `json:"typ"`
// The optional hint of which key is being used.
KeyID string `json:"kid,omitempty"`
}
func (h *Header) encode() (string, error) {
b, err := json.Marshal(h)
if err != nil {
return "", err
}
return base64.RawURLEncoding.EncodeToString(b), nil
}
// Decode decodes a claim set from a JWS payload.
func Decode(payload string) (*ClaimSet, error) {
// decode returned id token to get expiry
s := strings.Split(payload, ".")
if len(s) < 2 {
// TODO(jbd): Provide more context about the error.
return nil, errors.New("jws: invalid token received")
}
decoded, err := base64.RawURLEncoding.DecodeString(s[1])
if err != nil {
return nil, err
}
c := &ClaimSet{}
err = json.NewDecoder(bytes.NewBuffer(decoded)).Decode(c)
return c, err
}
// Signer returns a signature for the given data.
type Signer func(data []byte) (sig []byte, err error)
// EncodeWithSigner encodes a header and claim set with the provided signer.
func EncodeWithSigner(header *Header, c *ClaimSet, sg Signer) (string, error) {
head, err := header.encode()
if err != nil {
return "", err
}
cs, err := c.encode()
if err != nil {
return "", err
}
ss := fmt.Sprintf("%s.%s", head, cs)
sig, err := sg([]byte(ss))
if err != nil {
return "", err
}
return fmt.Sprintf("%s.%s", ss, base64.RawURLEncoding.EncodeToString(sig)), nil
}
// Encode encodes a signed JWS with provided header and claim set.
// This invokes EncodeWithSigner using crypto/rsa.SignPKCS1v15 with the given RSA private key.
func Encode(header *Header, c *ClaimSet, key *rsa.PrivateKey) (string, error) {
sg := func(data []byte) (sig []byte, err error) {
h := sha256.New()
h.Write(data)
return rsa.SignPKCS1v15(rand.Reader, key, crypto.SHA256, h.Sum(nil))
}
return EncodeWithSigner(header, c, sg)
}
// Verify tests whether the provided JWT token's signature was produced by the private key
// associated with the supplied public key.
func Verify(token string, key *rsa.PublicKey) error {
parts := strings.Split(token, ".")
if len(parts) != 3 {
return errors.New("jws: invalid token received, token must have 3 parts")
}
signedContent := parts[0] + "." + parts[1]
signatureString, err := base64.RawURLEncoding.DecodeString(parts[2])
if err != nil {
return err
}
h := sha256.New()
h.Write([]byte(signedContent))
return rsa.VerifyPKCS1v15(key, crypto.SHA256, h.Sum(nil), []byte(signatureString))
}

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// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package jwt implements the OAuth 2.0 JSON Web Token flow, commonly
// known as "two-legged OAuth 2.0".
//
// See: https://tools.ietf.org/html/draft-ietf-oauth-jwt-bearer-12
package jwt
import (
"encoding/json"
"fmt"
"io"
"io/ioutil"
"net/http"
"net/url"
"strings"
"time"
"golang.org/x/net/context"
"golang.org/x/oauth2"
"golang.org/x/oauth2/internal"
"golang.org/x/oauth2/jws"
)
var (
defaultGrantType = "urn:ietf:params:oauth:grant-type:jwt-bearer"
defaultHeader = &jws.Header{Algorithm: "RS256", Typ: "JWT"}
)
// Config is the configuration for using JWT to fetch tokens,
// commonly known as "two-legged OAuth 2.0".
type Config struct {
// Email is the OAuth client identifier used when communicating with
// the configured OAuth provider.
Email string
// PrivateKey contains the contents of an RSA private key or the
// contents of a PEM file that contains a private key. The provided
// private key is used to sign JWT payloads.
// PEM containers with a passphrase are not supported.
// Use the following command to convert a PKCS 12 file into a PEM.
//
// $ openssl pkcs12 -in key.p12 -out key.pem -nodes
//
PrivateKey []byte
// PrivateKeyID contains an optional hint indicating which key is being
// used.
PrivateKeyID string
// Subject is the optional user to impersonate.
Subject string
// Scopes optionally specifies a list of requested permission scopes.
Scopes []string
// TokenURL is the endpoint required to complete the 2-legged JWT flow.
TokenURL string
// Expires optionally specifies how long the token is valid for.
Expires time.Duration
}
// TokenSource returns a JWT TokenSource using the configuration
// in c and the HTTP client from the provided context.
func (c *Config) TokenSource(ctx context.Context) oauth2.TokenSource {
return oauth2.ReuseTokenSource(nil, jwtSource{ctx, c})
}
// Client returns an HTTP client wrapping the context's
// HTTP transport and adding Authorization headers with tokens
// obtained from c.
//
// The returned client and its Transport should not be modified.
func (c *Config) Client(ctx context.Context) *http.Client {
return oauth2.NewClient(ctx, c.TokenSource(ctx))
}
// jwtSource is a source that always does a signed JWT request for a token.
// It should typically be wrapped with a reuseTokenSource.
type jwtSource struct {
ctx context.Context
conf *Config
}
func (js jwtSource) Token() (*oauth2.Token, error) {
pk, err := internal.ParseKey(js.conf.PrivateKey)
if err != nil {
return nil, err
}
hc := oauth2.NewClient(js.ctx, nil)
claimSet := &jws.ClaimSet{
Iss: js.conf.Email,
Scope: strings.Join(js.conf.Scopes, " "),
Aud: js.conf.TokenURL,
}
if subject := js.conf.Subject; subject != "" {
claimSet.Sub = subject
// prn is the old name of sub. Keep setting it
// to be compatible with legacy OAuth 2.0 providers.
claimSet.Prn = subject
}
if t := js.conf.Expires; t > 0 {
claimSet.Exp = time.Now().Add(t).Unix()
}
h := *defaultHeader
h.KeyID = js.conf.PrivateKeyID
payload, err := jws.Encode(&h, claimSet, pk)
if err != nil {
return nil, err
}
v := url.Values{}
v.Set("grant_type", defaultGrantType)
v.Set("assertion", payload)
resp, err := hc.PostForm(js.conf.TokenURL, v)
if err != nil {
return nil, fmt.Errorf("oauth2: cannot fetch token: %v", err)
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(io.LimitReader(resp.Body, 1<<20))
if err != nil {
return nil, fmt.Errorf("oauth2: cannot fetch token: %v", err)
}
if c := resp.StatusCode; c < 200 || c > 299 {
return nil, &oauth2.RetrieveError{
Response: resp,
Body: body,
}
}
// tokenRes is the JSON response body.
var tokenRes struct {
AccessToken string `json:"access_token"`
TokenType string `json:"token_type"`
IDToken string `json:"id_token"`
ExpiresIn int64 `json:"expires_in"` // relative seconds from now
}
if err := json.Unmarshal(body, &tokenRes); err != nil {
return nil, fmt.Errorf("oauth2: cannot fetch token: %v", err)
}
token := &oauth2.Token{
AccessToken: tokenRes.AccessToken,
TokenType: tokenRes.TokenType,
}
raw := make(map[string]interface{})
json.Unmarshal(body, &raw) // no error checks for optional fields
token = token.WithExtra(raw)
if secs := tokenRes.ExpiresIn; secs > 0 {
token.Expiry = time.Now().Add(time.Duration(secs) * time.Second)
}
if v := tokenRes.IDToken; v != "" {
// decode returned id token to get expiry
claimSet, err := jws.Decode(v)
if err != nil {
return nil, fmt.Errorf("oauth2: error decoding JWT token: %v", err)
}
token.Expiry = time.Unix(claimSet.Exp, 0)
}
return token, nil
}

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// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package oauth2 provides support for making
// OAuth2 authorized and authenticated HTTP requests,
// as specified in RFC 6749.
// It can additionally grant authorization with Bearer JWT.
package oauth2 // import "golang.org/x/oauth2"
import (
"bytes"
"errors"
"net/http"
"net/url"
"strings"
"sync"
"golang.org/x/net/context"
"golang.org/x/oauth2/internal"
)
// NoContext is the default context you should supply if not using
// your own context.Context (see https://golang.org/x/net/context).
//
// Deprecated: Use context.Background() or context.TODO() instead.
var NoContext = context.TODO()
// RegisterBrokenAuthHeaderProvider registers an OAuth2 server
// identified by the tokenURL prefix as an OAuth2 implementation
// which doesn't support the HTTP Basic authentication
// scheme to authenticate with the authorization server.
// Once a server is registered, credentials (client_id and client_secret)
// will be passed as query parameters rather than being present
// in the Authorization header.
// See https://code.google.com/p/goauth2/issues/detail?id=31 for background.
func RegisterBrokenAuthHeaderProvider(tokenURL string) {
internal.RegisterBrokenAuthHeaderProvider(tokenURL)
}
// Config describes a typical 3-legged OAuth2 flow, with both the
// client application information and the server's endpoint URLs.
// For the client credentials 2-legged OAuth2 flow, see the clientcredentials
// package (https://golang.org/x/oauth2/clientcredentials).
type Config struct {
// ClientID is the application's ID.
ClientID string
// ClientSecret is the application's secret.
ClientSecret string
// Endpoint contains the resource server's token endpoint
// URLs. These are constants specific to each server and are
// often available via site-specific packages, such as
// google.Endpoint or github.Endpoint.
Endpoint Endpoint
// RedirectURL is the URL to redirect users going through
// the OAuth flow, after the resource owner's URLs.
RedirectURL string
// Scope specifies optional requested permissions.
Scopes []string
}
// A TokenSource is anything that can return a token.
type TokenSource interface {
// Token returns a token or an error.
// Token must be safe for concurrent use by multiple goroutines.
// The returned Token must not be modified.
Token() (*Token, error)
}
// Endpoint contains the OAuth 2.0 provider's authorization and token
// endpoint URLs.
type Endpoint struct {
AuthURL string
TokenURL string
}
var (
// AccessTypeOnline and AccessTypeOffline are options passed
// to the Options.AuthCodeURL method. They modify the
// "access_type" field that gets sent in the URL returned by
// AuthCodeURL.
//
// Online is the default if neither is specified. If your
// application needs to refresh access tokens when the user
// is not present at the browser, then use offline. This will
// result in your application obtaining a refresh token the
// first time your application exchanges an authorization
// code for a user.
AccessTypeOnline AuthCodeOption = SetAuthURLParam("access_type", "online")
AccessTypeOffline AuthCodeOption = SetAuthURLParam("access_type", "offline")
// ApprovalForce forces the users to view the consent dialog
// and confirm the permissions request at the URL returned
// from AuthCodeURL, even if they've already done so.
ApprovalForce AuthCodeOption = SetAuthURLParam("approval_prompt", "force")
)
// An AuthCodeOption is passed to Config.AuthCodeURL.
type AuthCodeOption interface {
setValue(url.Values)
}
type setParam struct{ k, v string }
func (p setParam) setValue(m url.Values) { m.Set(p.k, p.v) }
// SetAuthURLParam builds an AuthCodeOption which passes key/value parameters
// to a provider's authorization endpoint.
func SetAuthURLParam(key, value string) AuthCodeOption {
return setParam{key, value}
}
// AuthCodeURL returns a URL to OAuth 2.0 provider's consent page
// that asks for permissions for the required scopes explicitly.
//
// State is a token to protect the user from CSRF attacks. You must
// always provide a non-empty string and validate that it matches the
// the state query parameter on your redirect callback.
// See http://tools.ietf.org/html/rfc6749#section-10.12 for more info.
//
// Opts may include AccessTypeOnline or AccessTypeOffline, as well
// as ApprovalForce.
// It can also be used to pass the PKCE challange.
// See https://www.oauth.com/oauth2-servers/pkce/ for more info.
func (c *Config) AuthCodeURL(state string, opts ...AuthCodeOption) string {
var buf bytes.Buffer
buf.WriteString(c.Endpoint.AuthURL)
v := url.Values{
"response_type": {"code"},
"client_id": {c.ClientID},
}
if c.RedirectURL != "" {
v.Set("redirect_uri", c.RedirectURL)
}
if len(c.Scopes) > 0 {
v.Set("scope", strings.Join(c.Scopes, " "))
}
if state != "" {
// TODO(light): Docs say never to omit state; don't allow empty.
v.Set("state", state)
}
for _, opt := range opts {
opt.setValue(v)
}
if strings.Contains(c.Endpoint.AuthURL, "?") {
buf.WriteByte('&')
} else {
buf.WriteByte('?')
}
buf.WriteString(v.Encode())
return buf.String()
}
// PasswordCredentialsToken converts a resource owner username and password
// pair into a token.
//
// Per the RFC, this grant type should only be used "when there is a high
// degree of trust between the resource owner and the client (e.g., the client
// is part of the device operating system or a highly privileged application),
// and when other authorization grant types are not available."
// See https://tools.ietf.org/html/rfc6749#section-4.3 for more info.
//
// The HTTP client to use is derived from the context.
// If nil, http.DefaultClient is used.
func (c *Config) PasswordCredentialsToken(ctx context.Context, username, password string) (*Token, error) {
v := url.Values{
"grant_type": {"password"},
"username": {username},
"password": {password},
}
if len(c.Scopes) > 0 {
v.Set("scope", strings.Join(c.Scopes, " "))
}
return retrieveToken(ctx, c, v)
}
// Exchange converts an authorization code into a token.
//
// It is used after a resource provider redirects the user back
// to the Redirect URI (the URL obtained from AuthCodeURL).
//
// The HTTP client to use is derived from the context.
// If a client is not provided via the context, http.DefaultClient is used.
//
// The code will be in the *http.Request.FormValue("code"). Before
// calling Exchange, be sure to validate FormValue("state").
//
// Opts may include the PKCE verifier code if previously used in AuthCodeURL.
// See https://www.oauth.com/oauth2-servers/pkce/ for more info.
func (c *Config) Exchange(ctx context.Context, code string, opts ...AuthCodeOption) (*Token, error) {
v := url.Values{
"grant_type": {"authorization_code"},
"code": {code},
}
if c.RedirectURL != "" {
v.Set("redirect_uri", c.RedirectURL)
}
for _, opt := range opts {
opt.setValue(v)
}
return retrieveToken(ctx, c, v)
}
// Client returns an HTTP client using the provided token.
// The token will auto-refresh as necessary. The underlying
// HTTP transport will be obtained using the provided context.
// The returned client and its Transport should not be modified.
func (c *Config) Client(ctx context.Context, t *Token) *http.Client {
return NewClient(ctx, c.TokenSource(ctx, t))
}
// TokenSource returns a TokenSource that returns t until t expires,
// automatically refreshing it as necessary using the provided context.
//
// Most users will use Config.Client instead.
func (c *Config) TokenSource(ctx context.Context, t *Token) TokenSource {
tkr := &tokenRefresher{
ctx: ctx,
conf: c,
}
if t != nil {
tkr.refreshToken = t.RefreshToken
}
return &reuseTokenSource{
t: t,
new: tkr,
}
}
// tokenRefresher is a TokenSource that makes "grant_type"=="refresh_token"
// HTTP requests to renew a token using a RefreshToken.
type tokenRefresher struct {
ctx context.Context // used to get HTTP requests
conf *Config
refreshToken string
}
// WARNING: Token is not safe for concurrent access, as it
// updates the tokenRefresher's refreshToken field.
// Within this package, it is used by reuseTokenSource which
// synchronizes calls to this method with its own mutex.
func (tf *tokenRefresher) Token() (*Token, error) {
if tf.refreshToken == "" {
return nil, errors.New("oauth2: token expired and refresh token is not set")
}
tk, err := retrieveToken(tf.ctx, tf.conf, url.Values{
"grant_type": {"refresh_token"},
"refresh_token": {tf.refreshToken},
})
if err != nil {
return nil, err
}
if tf.refreshToken != tk.RefreshToken {
tf.refreshToken = tk.RefreshToken
}
return tk, err
}
// reuseTokenSource is a TokenSource that holds a single token in memory
// and validates its expiry before each call to retrieve it with
// Token. If it's expired, it will be auto-refreshed using the
// new TokenSource.
type reuseTokenSource struct {
new TokenSource // called when t is expired.
mu sync.Mutex // guards t
t *Token
}
// Token returns the current token if it's still valid, else will
// refresh the current token (using r.Context for HTTP client
// information) and return the new one.
func (s *reuseTokenSource) Token() (*Token, error) {
s.mu.Lock()
defer s.mu.Unlock()
if s.t.Valid() {
return s.t, nil
}
t, err := s.new.Token()
if err != nil {
return nil, err
}
s.t = t
return t, nil
}
// StaticTokenSource returns a TokenSource that always returns the same token.
// Because the provided token t is never refreshed, StaticTokenSource is only
// useful for tokens that never expire.
func StaticTokenSource(t *Token) TokenSource {
return staticTokenSource{t}
}
// staticTokenSource is a TokenSource that always returns the same Token.
type staticTokenSource struct {
t *Token
}
func (s staticTokenSource) Token() (*Token, error) {
return s.t, nil
}
// HTTPClient is the context key to use with golang.org/x/net/context's
// WithValue function to associate an *http.Client value with a context.
var HTTPClient internal.ContextKey
// NewClient creates an *http.Client from a Context and TokenSource.
// The returned client is not valid beyond the lifetime of the context.
//
// Note that if a custom *http.Client is provided via the Context it
// is used only for token acquisition and is not used to configure the
// *http.Client returned from NewClient.
//
// As a special case, if src is nil, a non-OAuth2 client is returned
// using the provided context. This exists to support related OAuth2
// packages.
func NewClient(ctx context.Context, src TokenSource) *http.Client {
if src == nil {
return internal.ContextClient(ctx)
}
return &http.Client{
Transport: &Transport{
Base: internal.ContextClient(ctx).Transport,
Source: ReuseTokenSource(nil, src),
},
}
}
// ReuseTokenSource returns a TokenSource which repeatedly returns the
// same token as long as it's valid, starting with t.
// When its cached token is invalid, a new token is obtained from src.
//
// ReuseTokenSource is typically used to reuse tokens from a cache
// (such as a file on disk) between runs of a program, rather than
// obtaining new tokens unnecessarily.
//
// The initial token t may be nil, in which case the TokenSource is
// wrapped in a caching version if it isn't one already. This also
// means it's always safe to wrap ReuseTokenSource around any other
// TokenSource without adverse effects.
func ReuseTokenSource(t *Token, src TokenSource) TokenSource {
// Don't wrap a reuseTokenSource in itself. That would work,
// but cause an unnecessary number of mutex operations.
// Just build the equivalent one.
if rt, ok := src.(*reuseTokenSource); ok {
if t == nil {
// Just use it directly.
return rt
}
src = rt.new
}
return &reuseTokenSource{
t: t,
new: src,
}
}

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// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package oauth2
import (
"fmt"
"net/http"
"net/url"
"strconv"
"strings"
"time"
"golang.org/x/net/context"
"golang.org/x/oauth2/internal"
)
// expiryDelta determines how earlier a token should be considered
// expired than its actual expiration time. It is used to avoid late
// expirations due to client-server time mismatches.
const expiryDelta = 10 * time.Second
// Token represents the credentials used to authorize
// the requests to access protected resources on the OAuth 2.0
// provider's backend.
//
// Most users of this package should not access fields of Token
// directly. They're exported mostly for use by related packages
// implementing derivative OAuth2 flows.
type Token struct {
// AccessToken is the token that authorizes and authenticates
// the requests.
AccessToken string `json:"access_token"`
// TokenType is the type of token.
// The Type method returns either this or "Bearer", the default.
TokenType string `json:"token_type,omitempty"`
// RefreshToken is a token that's used by the application
// (as opposed to the user) to refresh the access token
// if it expires.
RefreshToken string `json:"refresh_token,omitempty"`
// Expiry is the optional expiration time of the access token.
//
// If zero, TokenSource implementations will reuse the same
// token forever and RefreshToken or equivalent
// mechanisms for that TokenSource will not be used.
Expiry time.Time `json:"expiry,omitempty"`
// raw optionally contains extra metadata from the server
// when updating a token.
raw interface{}
}
// Type returns t.TokenType if non-empty, else "Bearer".
func (t *Token) Type() string {
if strings.EqualFold(t.TokenType, "bearer") {
return "Bearer"
}
if strings.EqualFold(t.TokenType, "mac") {
return "MAC"
}
if strings.EqualFold(t.TokenType, "basic") {
return "Basic"
}
if t.TokenType != "" {
return t.TokenType
}
return "Bearer"
}
// SetAuthHeader sets the Authorization header to r using the access
// token in t.
//
// This method is unnecessary when using Transport or an HTTP Client
// returned by this package.
func (t *Token) SetAuthHeader(r *http.Request) {
r.Header.Set("Authorization", t.Type()+" "+t.AccessToken)
}
// WithExtra returns a new Token that's a clone of t, but using the
// provided raw extra map. This is only intended for use by packages
// implementing derivative OAuth2 flows.
func (t *Token) WithExtra(extra interface{}) *Token {
t2 := new(Token)
*t2 = *t
t2.raw = extra
return t2
}
// Extra returns an extra field.
// Extra fields are key-value pairs returned by the server as a
// part of the token retrieval response.
func (t *Token) Extra(key string) interface{} {
if raw, ok := t.raw.(map[string]interface{}); ok {
return raw[key]
}
vals, ok := t.raw.(url.Values)
if !ok {
return nil
}
v := vals.Get(key)
switch s := strings.TrimSpace(v); strings.Count(s, ".") {
case 0: // Contains no "."; try to parse as int
if i, err := strconv.ParseInt(s, 10, 64); err == nil {
return i
}
case 1: // Contains a single "."; try to parse as float
if f, err := strconv.ParseFloat(s, 64); err == nil {
return f
}
}
return v
}
// expired reports whether the token is expired.
// t must be non-nil.
func (t *Token) expired() bool {
if t.Expiry.IsZero() {
return false
}
return t.Expiry.Round(0).Add(-expiryDelta).Before(time.Now())
}
// Valid reports whether t is non-nil, has an AccessToken, and is not expired.
func (t *Token) Valid() bool {
return t != nil && t.AccessToken != "" && !t.expired()
}
// tokenFromInternal maps an *internal.Token struct into
// a *Token struct.
func tokenFromInternal(t *internal.Token) *Token {
if t == nil {
return nil
}
return &Token{
AccessToken: t.AccessToken,
TokenType: t.TokenType,
RefreshToken: t.RefreshToken,
Expiry: t.Expiry,
raw: t.Raw,
}
}
// retrieveToken takes a *Config and uses that to retrieve an *internal.Token.
// This token is then mapped from *internal.Token into an *oauth2.Token which is returned along
// with an error..
func retrieveToken(ctx context.Context, c *Config, v url.Values) (*Token, error) {
tk, err := internal.RetrieveToken(ctx, c.ClientID, c.ClientSecret, c.Endpoint.TokenURL, v)
if err != nil {
if rErr, ok := err.(*internal.RetrieveError); ok {
return nil, (*RetrieveError)(rErr)
}
return nil, err
}
return tokenFromInternal(tk), nil
}
// RetrieveError is the error returned when the token endpoint returns a
// non-2XX HTTP status code.
type RetrieveError struct {
Response *http.Response
// Body is the body that was consumed by reading Response.Body.
// It may be truncated.
Body []byte
}
func (r *RetrieveError) Error() string {
return fmt.Sprintf("oauth2: cannot fetch token: %v\nResponse: %s", r.Response.Status, r.Body)
}

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// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package oauth2
import (
"errors"
"io"
"net/http"
"sync"
)
// Transport is an http.RoundTripper that makes OAuth 2.0 HTTP requests,
// wrapping a base RoundTripper and adding an Authorization header
// with a token from the supplied Sources.
//
// Transport is a low-level mechanism. Most code will use the
// higher-level Config.Client method instead.
type Transport struct {
// Source supplies the token to add to outgoing requests'
// Authorization headers.
Source TokenSource
// Base is the base RoundTripper used to make HTTP requests.
// If nil, http.DefaultTransport is used.
Base http.RoundTripper
mu sync.Mutex // guards modReq
modReq map[*http.Request]*http.Request // original -> modified
}
// RoundTrip authorizes and authenticates the request with an
// access token from Transport's Source.
func (t *Transport) RoundTrip(req *http.Request) (*http.Response, error) {
reqBodyClosed := false
if req.Body != nil {
defer func() {
if !reqBodyClosed {
req.Body.Close()
}
}()
}
if t.Source == nil {
return nil, errors.New("oauth2: Transport's Source is nil")
}
token, err := t.Source.Token()
if err != nil {
return nil, err
}
req2 := cloneRequest(req) // per RoundTripper contract
token.SetAuthHeader(req2)
t.setModReq(req, req2)
res, err := t.base().RoundTrip(req2)
// req.Body is assumed to have been closed by the base RoundTripper.
reqBodyClosed = true
if err != nil {
t.setModReq(req, nil)
return nil, err
}
res.Body = &onEOFReader{
rc: res.Body,
fn: func() { t.setModReq(req, nil) },
}
return res, nil
}
// CancelRequest cancels an in-flight request by closing its connection.
func (t *Transport) CancelRequest(req *http.Request) {
type canceler interface {
CancelRequest(*http.Request)
}
if cr, ok := t.base().(canceler); ok {
t.mu.Lock()
modReq := t.modReq[req]
delete(t.modReq, req)
t.mu.Unlock()
cr.CancelRequest(modReq)
}
}
func (t *Transport) base() http.RoundTripper {
if t.Base != nil {
return t.Base
}
return http.DefaultTransport
}
func (t *Transport) setModReq(orig, mod *http.Request) {
t.mu.Lock()
defer t.mu.Unlock()
if t.modReq == nil {
t.modReq = make(map[*http.Request]*http.Request)
}
if mod == nil {
delete(t.modReq, orig)
} else {
t.modReq[orig] = mod
}
}
// cloneRequest returns a clone of the provided *http.Request.
// The clone is a shallow copy of the struct and its Header map.
func cloneRequest(r *http.Request) *http.Request {
// shallow copy of the struct
r2 := new(http.Request)
*r2 = *r
// deep copy of the Header
r2.Header = make(http.Header, len(r.Header))
for k, s := range r.Header {
r2.Header[k] = append([]string(nil), s...)
}
return r2
}
type onEOFReader struct {
rc io.ReadCloser
fn func()
}
func (r *onEOFReader) Read(p []byte) (n int, err error) {
n, err = r.rc.Read(p)
if err == io.EOF {
r.runFunc()
}
return
}
func (r *onEOFReader) Close() error {
err := r.rc.Close()
r.runFunc()
return err
}
func (r *onEOFReader) runFunc() {
if fn := r.fn; fn != nil {
fn()
r.fn = nil
}
}

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language: go
go:
- 1.6.x
- 1.7.x
- 1.8.x
- 1.9.x
go_import_path: google.golang.org/appengine
install:
- go get -u -v $(go list -f '{{join .Imports "\n"}}{{"\n"}}{{join .TestImports "\n"}}' ./... | sort | uniq | grep -v appengine)
- mkdir /tmp/sdk
- curl -o /tmp/sdk.zip "https://storage.googleapis.com/appengine-sdks/featured/go_appengine_sdk_linux_amd64-1.9.40.zip"
- unzip -q /tmp/sdk.zip -d /tmp/sdk
- export PATH="$PATH:/tmp/sdk/go_appengine"
- export APPENGINE_DEV_APPSERVER=/tmp/sdk/go_appengine/dev_appserver.py
script:
- goapp version
- go version
- go test -v google.golang.org/appengine/...
- go test -v -race google.golang.org/appengine/...
- goapp test -v google.golang.org/appengine/...

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# Contributing
1. Sign one of the contributor license agreements below.
1. Get the package:
`go get -d google.golang.org/appengine`
1. Change into the checked out source:
`cd $GOPATH/src/google.golang.org/appengine`
1. Fork the repo.
1. Set your fork as a remote:
`git remote add fork git@github.com:GITHUB_USERNAME/appengine.git`
1. Make changes, commit to your fork.
1. Send a pull request with your changes.
The first line of your commit message is conventionally a one-line summary of the change, prefixed by the primary affected package, and is used as the title of your pull request.
# Testing
## Running system tests
Download and install the [Go App Engine SDK](https://cloud.google.com/appengine/docs/go/download). Make sure the `go_appengine` dir is in your `PATH`.
Set the `APPENGINE_DEV_APPSERVER` environment variable to `/path/to/go_appengine/dev_appserver.py`.
Run tests with `goapp test`:
```
goapp test -v google.golang.org/appengine/...
```
## Contributor License Agreements
Before we can accept your pull requests you'll need to sign a Contributor
License Agreement (CLA):
- **If you are an individual writing original source code** and **you own the
intellectual property**, then you'll need to sign an [individual CLA][indvcla].
- **If you work for a company that wants to allow you to contribute your work**,
then you'll need to sign a [corporate CLA][corpcla].
You can sign these electronically (just scroll to the bottom). After that,
we'll be able to accept your pull requests.
## Contributor Code of Conduct
As contributors and maintainers of this project,
and in the interest of fostering an open and welcoming community,
we pledge to respect all people who contribute through reporting issues,
posting feature requests, updating documentation,
submitting pull requests or patches, and other activities.
We are committed to making participation in this project
a harassment-free experience for everyone,
regardless of level of experience, gender, gender identity and expression,
sexual orientation, disability, personal appearance,
body size, race, ethnicity, age, religion, or nationality.
Examples of unacceptable behavior by participants include:
* The use of sexualized language or imagery
* Personal attacks
* Trolling or insulting/derogatory comments
* Public or private harassment
* Publishing other's private information,
such as physical or electronic
addresses, without explicit permission
* Other unethical or unprofessional conduct.
Project maintainers have the right and responsibility to remove, edit, or reject
comments, commits, code, wiki edits, issues, and other contributions
that are not aligned to this Code of Conduct.
By adopting this Code of Conduct,
project maintainers commit themselves to fairly and consistently
applying these principles to every aspect of managing this project.
Project maintainers who do not follow or enforce the Code of Conduct
may be permanently removed from the project team.
This code of conduct applies both within project spaces and in public spaces
when an individual is representing the project or its community.
Instances of abusive, harassing, or otherwise unacceptable behavior
may be reported by opening an issue
or contacting one or more of the project maintainers.
This Code of Conduct is adapted from the [Contributor Covenant](http://contributor-covenant.org), version 1.2.0,
available at [http://contributor-covenant.org/version/1/2/0/](http://contributor-covenant.org/version/1/2/0/)
[indvcla]: https://developers.google.com/open-source/cla/individual
[corpcla]: https://developers.google.com/open-source/cla/corporate

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Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
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outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
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"Work" shall mean the work of authorship, whether in Source or
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# Go App Engine packages
[![Build Status](https://travis-ci.org/golang/appengine.svg)](https://travis-ci.org/golang/appengine)
This repository supports the Go runtime on *App Engine standard*.
It provides APIs for interacting with App Engine services.
Its canonical import path is `google.golang.org/appengine`.
See https://cloud.google.com/appengine/docs/go/
for more information.
File issue reports and feature requests on the [GitHub's issue
tracker](https://github.com/golang/appengine/issues).
## Upgrading an App Engine app to the flexible environment
This package does not work on *App Engine flexible*.
There are many differences between the App Engine standard environment and
the flexible environment.
See the [documentation on upgrading to the flexible environment](https://cloud.google.com/appengine/docs/flexible/go/upgrading).
## Directory structure
The top level directory of this repository is the `appengine` package. It
contains the
basic APIs (e.g. `appengine.NewContext`) that apply across APIs. Specific API
packages are in subdirectories (e.g. `datastore`).
There is an `internal` subdirectory that contains service protocol buffers,
plus packages required for connectivity to make API calls. App Engine apps
should not directly import any package under `internal`.
## Updating from legacy (`import "appengine"`) packages
If you're currently using the bare `appengine` packages
(that is, not these ones, imported via `google.golang.org/appengine`),
then you can use the `aefix` tool to help automate an upgrade to these packages.
Run `go get google.golang.org/appengine/cmd/aefix` to install it.
### 1. Update import paths
The import paths for App Engine packages are now fully qualified, based at `google.golang.org/appengine`.
You will need to update your code to use import paths starting with that; for instance,
code importing `appengine/datastore` will now need to import `google.golang.org/appengine/datastore`.
### 2. Update code using deprecated, removed or modified APIs
Most App Engine services are available with exactly the same API.
A few APIs were cleaned up, and there are some differences:
* `appengine.Context` has been replaced with the `Context` type from `golang.org/x/net/context`.
* Logging methods that were on `appengine.Context` are now functions in `google.golang.org/appengine/log`.
* `appengine.Timeout` has been removed. Use `context.WithTimeout` instead.
* `appengine.Datacenter` now takes a `context.Context` argument.
* `datastore.PropertyLoadSaver` has been simplified to use slices in place of channels.
* `delay.Call` now returns an error.
* `search.FieldLoadSaver` now handles document metadata.
* `urlfetch.Transport` no longer has a Deadline field; set a deadline on the
`context.Context` instead.
* `aetest` no longer declares its own Context type, and uses the standard one instead.
* `taskqueue.QueueStats` no longer takes a maxTasks argument. That argument has been
deprecated and unused for a long time.
* `appengine.BackendHostname` and `appengine.BackendInstance` were for the deprecated backends feature.
Use `appengine.ModuleHostname`and `appengine.ModuleName` instead.
* Most of `appengine/file` and parts of `appengine/blobstore` are deprecated.
Use [Google Cloud Storage](https://godoc.org/cloud.google.com/go/storage) if the
feature you require is not present in the new
[blobstore package](https://google.golang.org/appengine/blobstore).
* `appengine/socket` is not required on App Engine flexible environment / Managed VMs.
Use the standard `net` package instead.

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// Copyright 2011 Google Inc. All rights reserved.
// Use of this source code is governed by the Apache 2.0
// license that can be found in the LICENSE file.
// Package appengine provides basic functionality for Google App Engine.
//
// For more information on how to write Go apps for Google App Engine, see:
// https://cloud.google.com/appengine/docs/go/
package appengine // import "google.golang.org/appengine"
import (
"net/http"
"github.com/golang/protobuf/proto"
"golang.org/x/net/context"
"google.golang.org/appengine/internal"
)
// The gophers party all night; the rabbits provide the beats.
// Main is the principal entry point for an app running in App Engine.
//
// On App Engine Flexible it installs a trivial health checker if one isn't
// already registered, and starts listening on port 8080 (overridden by the
// $PORT environment variable).
//
// See https://cloud.google.com/appengine/docs/flexible/custom-runtimes#health_check_requests
// for details on how to do your own health checking.
//
// On App Engine Standard it ensures the server has started and is prepared to
// receive requests.
//
// Main never returns.
//
// Main is designed so that the app's main package looks like this:
//
// package main
//
// import (
// "google.golang.org/appengine"
//
// _ "myapp/package0"
// _ "myapp/package1"
// )
//
// func main() {
// appengine.Main()
// }
//
// The "myapp/packageX" packages are expected to register HTTP handlers
// in their init functions.
func Main() {
internal.Main()
}
// IsDevAppServer reports whether the App Engine app is running in the
// development App Server.
func IsDevAppServer() bool {
return internal.IsDevAppServer()
}
// NewContext returns a context for an in-flight HTTP request.
// This function is cheap.
func NewContext(req *http.Request) context.Context {
return internal.ReqContext(req)
}
// WithContext returns a copy of the parent context
// and associates it with an in-flight HTTP request.
// This function is cheap.
func WithContext(parent context.Context, req *http.Request) context.Context {
return internal.WithContext(parent, req)
}
// TODO(dsymonds): Add a Call function here? Otherwise other packages can't access internal.Call.
// BlobKey is a key for a blobstore blob.
//
// Conceptually, this type belongs in the blobstore package, but it lives in
// the appengine package to avoid a circular dependency: blobstore depends on
// datastore, and datastore needs to refer to the BlobKey type.
type BlobKey string
// GeoPoint represents a location as latitude/longitude in degrees.
type GeoPoint struct {
Lat, Lng float64
}
// Valid returns whether a GeoPoint is within [-90, 90] latitude and [-180, 180] longitude.
func (g GeoPoint) Valid() bool {
return -90 <= g.Lat && g.Lat <= 90 && -180 <= g.Lng && g.Lng <= 180
}
// APICallFunc defines a function type for handling an API call.
// See WithCallOverride.
type APICallFunc func(ctx context.Context, service, method string, in, out proto.Message) error
// WithAPICallFunc returns a copy of the parent context
// that will cause API calls to invoke f instead of their normal operation.
//
// This is intended for advanced users only.
func WithAPICallFunc(ctx context.Context, f APICallFunc) context.Context {
return internal.WithCallOverride(ctx, internal.CallOverrideFunc(f))
}
// APICall performs an API call.
//
// This is not intended for general use; it is exported for use in conjunction
// with WithAPICallFunc.
func APICall(ctx context.Context, service, method string, in, out proto.Message) error {
return internal.Call(ctx, service, method, in, out)
}

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// Copyright 2015 Google Inc. All rights reserved.
// Use of this source code is governed by the Apache 2.0
// license that can be found in the LICENSE file.
// +build !appengine
package appengine
import (
"golang.org/x/net/context"
"google.golang.org/appengine/internal"
)
// BackgroundContext returns a context not associated with a request.
// This should only be used when not servicing a request.
// This only works in App Engine "flexible environment".
func BackgroundContext() context.Context {
return internal.BackgroundContext()
}

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// Copyright 2011 Google Inc. All rights reserved.
// Use of this source code is governed by the Apache 2.0
// license that can be found in the LICENSE file.
// This file provides error functions for common API failure modes.
package appengine
import (
"fmt"
"google.golang.org/appengine/internal"
)
// IsOverQuota reports whether err represents an API call failure
// due to insufficient available quota.
func IsOverQuota(err error) bool {
callErr, ok := err.(*internal.CallError)
return ok && callErr.Code == 4
}
// MultiError is returned by batch operations when there are errors with
// particular elements. Errors will be in a one-to-one correspondence with
// the input elements; successful elements will have a nil entry.
type MultiError []error
func (m MultiError) Error() string {
s, n := "", 0
for _, e := range m {
if e != nil {
if n == 0 {
s = e.Error()
}
n++
}
}
switch n {
case 0:
return "(0 errors)"
case 1:
return s
case 2:
return s + " (and 1 other error)"
}
return fmt.Sprintf("%s (and %d other errors)", s, n-1)
}

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module google.golang.org/appengine
require (
github.com/golang/protobuf v1.2.0
golang.org/x/net v0.0.0-20180724234803-3673e40ba225
golang.org/x/text v0.3.0
)

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github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=

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// Copyright 2011 Google Inc. All rights reserved.
// Use of this source code is governed by the Apache 2.0
// license that can be found in the LICENSE file.
package appengine
import (
"time"
"golang.org/x/net/context"
"google.golang.org/appengine/internal"
pb "google.golang.org/appengine/internal/app_identity"
modpb "google.golang.org/appengine/internal/modules"
)
// AppID returns the application ID for the current application.
// The string will be a plain application ID (e.g. "appid"), with a
// domain prefix for custom domain deployments (e.g. "example.com:appid").
func AppID(c context.Context) string { return internal.AppID(c) }
// DefaultVersionHostname returns the standard hostname of the default version
// of the current application (e.g. "my-app.appspot.com"). This is suitable for
// use in constructing URLs.
func DefaultVersionHostname(c context.Context) string {
return internal.DefaultVersionHostname(c)
}
// ModuleName returns the module name of the current instance.
func ModuleName(c context.Context) string {
return internal.ModuleName(c)
}
// ModuleHostname returns a hostname of a module instance.
// If module is the empty string, it refers to the module of the current instance.
// If version is empty, it refers to the version of the current instance if valid,
// or the default version of the module of the current instance.
// If instance is empty, ModuleHostname returns the load-balancing hostname.
func ModuleHostname(c context.Context, module, version, instance string) (string, error) {
req := &modpb.GetHostnameRequest{}
if module != "" {
req.Module = &module
}
if version != "" {
req.Version = &version
}
if instance != "" {
req.Instance = &instance
}
res := &modpb.GetHostnameResponse{}
if err := internal.Call(c, "modules", "GetHostname", req, res); err != nil {
return "", err
}
return *res.Hostname, nil
}
// VersionID returns the version ID for the current application.
// It will be of the form "X.Y", where X is specified in app.yaml,
// and Y is a number generated when each version of the app is uploaded.
// It does not include a module name.
func VersionID(c context.Context) string { return internal.VersionID(c) }
// InstanceID returns a mostly-unique identifier for this instance.
func InstanceID() string { return internal.InstanceID() }
// Datacenter returns an identifier for the datacenter that the instance is running in.
func Datacenter(c context.Context) string { return internal.Datacenter(c) }
// ServerSoftware returns the App Engine release version.
// In production, it looks like "Google App Engine/X.Y.Z".
// In the development appserver, it looks like "Development/X.Y".
func ServerSoftware() string { return internal.ServerSoftware() }
// RequestID returns a string that uniquely identifies the request.
func RequestID(c context.Context) string { return internal.RequestID(c) }
// AccessToken generates an OAuth2 access token for the specified scopes on
// behalf of service account of this application. This token will expire after
// the returned time.
func AccessToken(c context.Context, scopes ...string) (token string, expiry time.Time, err error) {
req := &pb.GetAccessTokenRequest{Scope: scopes}
res := &pb.GetAccessTokenResponse{}
err = internal.Call(c, "app_identity_service", "GetAccessToken", req, res)
if err != nil {
return "", time.Time{}, err
}
return res.GetAccessToken(), time.Unix(res.GetExpirationTime(), 0), nil
}
// Certificate represents a public certificate for the app.
type Certificate struct {
KeyName string
Data []byte // PEM-encoded X.509 certificate
}
// PublicCertificates retrieves the public certificates for the app.
// They can be used to verify a signature returned by SignBytes.
func PublicCertificates(c context.Context) ([]Certificate, error) {
req := &pb.GetPublicCertificateForAppRequest{}
res := &pb.GetPublicCertificateForAppResponse{}
if err := internal.Call(c, "app_identity_service", "GetPublicCertificatesForApp", req, res); err != nil {
return nil, err
}
var cs []Certificate
for _, pc := range res.PublicCertificateList {
cs = append(cs, Certificate{
KeyName: pc.GetKeyName(),
Data: []byte(pc.GetX509CertificatePem()),
})
}
return cs, nil
}
// ServiceAccount returns a string representing the service account name, in
// the form of an email address (typically app_id@appspot.gserviceaccount.com).
func ServiceAccount(c context.Context) (string, error) {
req := &pb.GetServiceAccountNameRequest{}
res := &pb.GetServiceAccountNameResponse{}
err := internal.Call(c, "app_identity_service", "GetServiceAccountName", req, res)
if err != nil {
return "", err
}
return res.GetServiceAccountName(), err
}
// SignBytes signs bytes using a private key unique to your application.
func SignBytes(c context.Context, bytes []byte) (keyName string, signature []byte, err error) {
req := &pb.SignForAppRequest{BytesToSign: bytes}
res := &pb.SignForAppResponse{}
if err := internal.Call(c, "app_identity_service", "SignForApp", req, res); err != nil {
return "", nil, err
}
return res.GetKeyName(), res.GetSignatureBytes(), nil
}
func init() {
internal.RegisterErrorCodeMap("app_identity_service", pb.AppIdentityServiceError_ErrorCode_name)
internal.RegisterErrorCodeMap("modules", modpb.ModulesServiceError_ErrorCode_name)
}

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// Copyright 2011 Google Inc. All rights reserved.
// Use of this source code is governed by the Apache 2.0
// license that can be found in the LICENSE file.
// +build !appengine
// +build go1.7
package internal
import (
"bytes"
"errors"
"fmt"
"io/ioutil"
"log"
"net"
"net/http"
"net/url"
"os"
"runtime"
"strconv"
"strings"
"sync"
"sync/atomic"
"time"
"github.com/golang/protobuf/proto"
netcontext "golang.org/x/net/context"
basepb "google.golang.org/appengine/internal/base"
logpb "google.golang.org/appengine/internal/log"
remotepb "google.golang.org/appengine/internal/remote_api"
)
const (
apiPath = "/rpc_http"
defaultTicketSuffix = "/default.20150612t184001.0"
)
var (
// Incoming headers.
ticketHeader = http.CanonicalHeaderKey("X-AppEngine-API-Ticket")
dapperHeader = http.CanonicalHeaderKey("X-Google-DapperTraceInfo")
traceHeader = http.CanonicalHeaderKey("X-Cloud-Trace-Context")
curNamespaceHeader = http.CanonicalHeaderKey("X-AppEngine-Current-Namespace")
userIPHeader = http.CanonicalHeaderKey("X-AppEngine-User-IP")
remoteAddrHeader = http.CanonicalHeaderKey("X-AppEngine-Remote-Addr")
// Outgoing headers.
apiEndpointHeader = http.CanonicalHeaderKey("X-Google-RPC-Service-Endpoint")
apiEndpointHeaderValue = []string{"app-engine-apis"}
apiMethodHeader = http.CanonicalHeaderKey("X-Google-RPC-Service-Method")
apiMethodHeaderValue = []string{"/VMRemoteAPI.CallRemoteAPI"}
apiDeadlineHeader = http.CanonicalHeaderKey("X-Google-RPC-Service-Deadline")
apiContentType = http.CanonicalHeaderKey("Content-Type")
apiContentTypeValue = []string{"application/octet-stream"}
logFlushHeader = http.CanonicalHeaderKey("X-AppEngine-Log-Flush-Count")
apiHTTPClient = &http.Client{
Transport: &http.Transport{
Proxy: http.ProxyFromEnvironment,
Dial: limitDial,
},
}
defaultTicketOnce sync.Once
defaultTicket string
backgroundContextOnce sync.Once
backgroundContext netcontext.Context
)
func apiURL() *url.URL {
host, port := "appengine.googleapis.internal", "10001"
if h := os.Getenv("API_HOST"); h != "" {
host = h
}
if p := os.Getenv("API_PORT"); p != "" {
port = p
}
return &url.URL{
Scheme: "http",
Host: host + ":" + port,
Path: apiPath,
}
}
func handleHTTP(w http.ResponseWriter, r *http.Request) {
c := &context{
req: r,
outHeader: w.Header(),
apiURL: apiURL(),
}
r = r.WithContext(withContext(r.Context(), c))
c.req = r
stopFlushing := make(chan int)
// Patch up RemoteAddr so it looks reasonable.
if addr := r.Header.Get(userIPHeader); addr != "" {
r.RemoteAddr = addr
} else if addr = r.Header.Get(remoteAddrHeader); addr != "" {
r.RemoteAddr = addr
} else {
// Should not normally reach here, but pick a sensible default anyway.
r.RemoteAddr = "127.0.0.1"
}
// The address in the headers will most likely be of these forms:
// 123.123.123.123
// 2001:db8::1
// net/http.Request.RemoteAddr is specified to be in "IP:port" form.
if _, _, err := net.SplitHostPort(r.RemoteAddr); err != nil {
// Assume the remote address is only a host; add a default port.
r.RemoteAddr = net.JoinHostPort(r.RemoteAddr, "80")
}
// Start goroutine responsible for flushing app logs.
// This is done after adding c to ctx.m (and stopped before removing it)
// because flushing logs requires making an API call.
go c.logFlusher(stopFlushing)
executeRequestSafely(c, r)
c.outHeader = nil // make sure header changes aren't respected any more
stopFlushing <- 1 // any logging beyond this point will be dropped
// Flush any pending logs asynchronously.
c.pendingLogs.Lock()
flushes := c.pendingLogs.flushes
if len(c.pendingLogs.lines) > 0 {
flushes++
}
c.pendingLogs.Unlock()
go c.flushLog(false)
w.Header().Set(logFlushHeader, strconv.Itoa(flushes))
// Avoid nil Write call if c.Write is never called.
if c.outCode != 0 {
w.WriteHeader(c.outCode)
}
if c.outBody != nil {
w.Write(c.outBody)
}
}
func executeRequestSafely(c *context, r *http.Request) {
defer func() {
if x := recover(); x != nil {
logf(c, 4, "%s", renderPanic(x)) // 4 == critical
c.outCode = 500
}
}()
http.DefaultServeMux.ServeHTTP(c, r)
}
func renderPanic(x interface{}) string {
buf := make([]byte, 16<<10) // 16 KB should be plenty
buf = buf[:runtime.Stack(buf, false)]
// Remove the first few stack frames:
// this func
// the recover closure in the caller
// That will root the stack trace at the site of the panic.
const (
skipStart = "internal.renderPanic"
skipFrames = 2
)
start := bytes.Index(buf, []byte(skipStart))
p := start
for i := 0; i < skipFrames*2 && p+1 < len(buf); i++ {
p = bytes.IndexByte(buf[p+1:], '\n') + p + 1
if p < 0 {
break
}
}
if p >= 0 {
// buf[start:p+1] is the block to remove.
// Copy buf[p+1:] over buf[start:] and shrink buf.
copy(buf[start:], buf[p+1:])
buf = buf[:len(buf)-(p+1-start)]
}
// Add panic heading.
head := fmt.Sprintf("panic: %v\n\n", x)
if len(head) > len(buf) {
// Extremely unlikely to happen.
return head
}
copy(buf[len(head):], buf)
copy(buf, head)
return string(buf)
}
// context represents the context of an in-flight HTTP request.
// It implements the appengine.Context and http.ResponseWriter interfaces.
type context struct {
req *http.Request
outCode int
outHeader http.Header
outBody []byte
pendingLogs struct {
sync.Mutex
lines []*logpb.UserAppLogLine
flushes int
}
apiURL *url.URL
}
var contextKey = "holds a *context"
// jointContext joins two contexts in a superficial way.
// It takes values and timeouts from a base context, and only values from another context.
type jointContext struct {
base netcontext.Context
valuesOnly netcontext.Context
}
func (c jointContext) Deadline() (time.Time, bool) {
return c.base.Deadline()
}
func (c jointContext) Done() <-chan struct{} {
return c.base.Done()
}
func (c jointContext) Err() error {
return c.base.Err()
}
func (c jointContext) Value(key interface{}) interface{} {
if val := c.base.Value(key); val != nil {
return val
}
return c.valuesOnly.Value(key)
}
// fromContext returns the App Engine context or nil if ctx is not
// derived from an App Engine context.
func fromContext(ctx netcontext.Context) *context {
c, _ := ctx.Value(&contextKey).(*context)
return c
}
func withContext(parent netcontext.Context, c *context) netcontext.Context {
ctx := netcontext.WithValue(parent, &contextKey, c)
if ns := c.req.Header.Get(curNamespaceHeader); ns != "" {
ctx = withNamespace(ctx, ns)
}
return ctx
}
func toContext(c *context) netcontext.Context {
return withContext(netcontext.Background(), c)
}
func IncomingHeaders(ctx netcontext.Context) http.Header {
if c := fromContext(ctx); c != nil {
return c.req.Header
}
return nil
}
func ReqContext(req *http.Request) netcontext.Context {
return req.Context()
}
func WithContext(parent netcontext.Context, req *http.Request) netcontext.Context {
return jointContext{
base: parent,
valuesOnly: req.Context(),
}
}
// DefaultTicket returns a ticket used for background context or dev_appserver.
func DefaultTicket() string {
defaultTicketOnce.Do(func() {
if IsDevAppServer() {
defaultTicket = "testapp" + defaultTicketSuffix
return
}
appID := partitionlessAppID()
escAppID := strings.Replace(strings.Replace(appID, ":", "_", -1), ".", "_", -1)
majVersion := VersionID(nil)
if i := strings.Index(majVersion, "."); i > 0 {
majVersion = majVersion[:i]
}
defaultTicket = fmt.Sprintf("%s/%s.%s.%s", escAppID, ModuleName(nil), majVersion, InstanceID())
})
return defaultTicket
}
func BackgroundContext() netcontext.Context {
backgroundContextOnce.Do(func() {
// Compute background security ticket.
ticket := DefaultTicket()
c := &context{
req: &http.Request{
Header: http.Header{
ticketHeader: []string{ticket},
},
},
apiURL: apiURL(),
}
backgroundContext = toContext(c)
// TODO(dsymonds): Wire up the shutdown handler to do a final flush.
go c.logFlusher(make(chan int))
})
return backgroundContext
}
// RegisterTestRequest registers the HTTP request req for testing, such that
// any API calls are sent to the provided URL. It returns a closure to delete
// the registration.
// It should only be used by aetest package.
func RegisterTestRequest(req *http.Request, apiURL *url.URL, decorate func(netcontext.Context) netcontext.Context) (*http.Request, func()) {
c := &context{
req: req,
apiURL: apiURL,
}
ctx := withContext(decorate(req.Context()), c)
req = req.WithContext(ctx)
c.req = req
return req, func() {}
}
var errTimeout = &CallError{
Detail: "Deadline exceeded",
Code: int32(remotepb.RpcError_CANCELLED),
Timeout: true,
}
func (c *context) Header() http.Header { return c.outHeader }
// Copied from $GOROOT/src/pkg/net/http/transfer.go. Some response status
// codes do not permit a response body (nor response entity headers such as
// Content-Length, Content-Type, etc).
func bodyAllowedForStatus(status int) bool {
switch {
case status >= 100 && status <= 199:
return false
case status == 204:
return false
case status == 304:
return false
}
return true
}
func (c *context) Write(b []byte) (int, error) {
if c.outCode == 0 {
c.WriteHeader(http.StatusOK)
}
if len(b) > 0 && !bodyAllowedForStatus(c.outCode) {
return 0, http.ErrBodyNotAllowed
}
c.outBody = append(c.outBody, b...)
return len(b), nil
}
func (c *context) WriteHeader(code int) {
if c.outCode != 0 {
logf(c, 3, "WriteHeader called multiple times on request.") // error level
return
}
c.outCode = code
}
func (c *context) post(body []byte, timeout time.Duration) (b []byte, err error) {
hreq := &http.Request{
Method: "POST",
URL: c.apiURL,
Header: http.Header{
apiEndpointHeader: apiEndpointHeaderValue,
apiMethodHeader: apiMethodHeaderValue,
apiContentType: apiContentTypeValue,
apiDeadlineHeader: []string{strconv.FormatFloat(timeout.Seconds(), 'f', -1, 64)},
},
Body: ioutil.NopCloser(bytes.NewReader(body)),
ContentLength: int64(len(body)),
Host: c.apiURL.Host,
}
if info := c.req.Header.Get(dapperHeader); info != "" {
hreq.Header.Set(dapperHeader, info)
}
if info := c.req.Header.Get(traceHeader); info != "" {
hreq.Header.Set(traceHeader, info)
}
tr := apiHTTPClient.Transport.(*http.Transport)
var timedOut int32 // atomic; set to 1 if timed out
t := time.AfterFunc(timeout, func() {
atomic.StoreInt32(&timedOut, 1)
tr.CancelRequest(hreq)
})
defer t.Stop()
defer func() {
// Check if timeout was exceeded.
if atomic.LoadInt32(&timedOut) != 0 {
err = errTimeout
}
}()
hresp, err := apiHTTPClient.Do(hreq)
if err != nil {
return nil, &CallError{
Detail: fmt.Sprintf("service bridge HTTP failed: %v", err),
Code: int32(remotepb.RpcError_UNKNOWN),
}
}
defer hresp.Body.Close()
hrespBody, err := ioutil.ReadAll(hresp.Body)
if hresp.StatusCode != 200 {
return nil, &CallError{
Detail: fmt.Sprintf("service bridge returned HTTP %d (%q)", hresp.StatusCode, hrespBody),
Code: int32(remotepb.RpcError_UNKNOWN),
}
}
if err != nil {
return nil, &CallError{
Detail: fmt.Sprintf("service bridge response bad: %v", err),
Code: int32(remotepb.RpcError_UNKNOWN),
}
}
return hrespBody, nil
}
func Call(ctx netcontext.Context, service, method string, in, out proto.Message) error {
if ns := NamespaceFromContext(ctx); ns != "" {
if fn, ok := NamespaceMods[service]; ok {
fn(in, ns)
}
}
if f, ctx, ok := callOverrideFromContext(ctx); ok {
return f(ctx, service, method, in, out)
}
// Handle already-done contexts quickly.
select {
case <-ctx.Done():
return ctx.Err()
default:
}
c := fromContext(ctx)
if c == nil {
// Give a good error message rather than a panic lower down.
return errNotAppEngineContext
}
// Apply transaction modifications if we're in a transaction.
if t := transactionFromContext(ctx); t != nil {
if t.finished {
return errors.New("transaction context has expired")
}
applyTransaction(in, &t.transaction)
}
// Default RPC timeout is 60s.
timeout := 60 * time.Second
if deadline, ok := ctx.Deadline(); ok {
timeout = deadline.Sub(time.Now())
}
data, err := proto.Marshal(in)
if err != nil {
return err
}
ticket := c.req.Header.Get(ticketHeader)
// Use a test ticket under test environment.
if ticket == "" {
if appid := ctx.Value(&appIDOverrideKey); appid != nil {
ticket = appid.(string) + defaultTicketSuffix
}
}
// Fall back to use background ticket when the request ticket is not available in Flex or dev_appserver.
if ticket == "" {
ticket = DefaultTicket()
}
req := &remotepb.Request{
ServiceName: &service,
Method: &method,
Request: data,
RequestId: &ticket,
}
hreqBody, err := proto.Marshal(req)
if err != nil {
return err
}
hrespBody, err := c.post(hreqBody, timeout)
if err != nil {
return err
}
res := &remotepb.Response{}
if err := proto.Unmarshal(hrespBody, res); err != nil {
return err
}
if res.RpcError != nil {
ce := &CallError{
Detail: res.RpcError.GetDetail(),
Code: *res.RpcError.Code,
}
switch remotepb.RpcError_ErrorCode(ce.Code) {
case remotepb.RpcError_CANCELLED, remotepb.RpcError_DEADLINE_EXCEEDED:
ce.Timeout = true
}
return ce
}
if res.ApplicationError != nil {
return &APIError{
Service: *req.ServiceName,
Detail: res.ApplicationError.GetDetail(),
Code: *res.ApplicationError.Code,
}
}
if res.Exception != nil || res.JavaException != nil {
// This shouldn't happen, but let's be defensive.
return &CallError{
Detail: "service bridge returned exception",
Code: int32(remotepb.RpcError_UNKNOWN),
}
}
return proto.Unmarshal(res.Response, out)
}
func (c *context) Request() *http.Request {
return c.req
}
func (c *context) addLogLine(ll *logpb.UserAppLogLine) {
// Truncate long log lines.
// TODO(dsymonds): Check if this is still necessary.
const lim = 8 << 10
if len(*ll.Message) > lim {
suffix := fmt.Sprintf("...(length %d)", len(*ll.Message))
ll.Message = proto.String((*ll.Message)[:lim-len(suffix)] + suffix)
}
c.pendingLogs.Lock()
c.pendingLogs.lines = append(c.pendingLogs.lines, ll)
c.pendingLogs.Unlock()
}
var logLevelName = map[int64]string{
0: "DEBUG",
1: "INFO",
2: "WARNING",
3: "ERROR",
4: "CRITICAL",
}
func logf(c *context, level int64, format string, args ...interface{}) {
if c == nil {
panic("not an App Engine context")
}
s := fmt.Sprintf(format, args...)
s = strings.TrimRight(s, "\n") // Remove any trailing newline characters.
c.addLogLine(&logpb.UserAppLogLine{
TimestampUsec: proto.Int64(time.Now().UnixNano() / 1e3),
Level: &level,
Message: &s,
})
log.Print(logLevelName[level] + ": " + s)
}
// flushLog attempts to flush any pending logs to the appserver.
// It should not be called concurrently.
func (c *context) flushLog(force bool) (flushed bool) {
c.pendingLogs.Lock()
// Grab up to 30 MB. We can get away with up to 32 MB, but let's be cautious.
n, rem := 0, 30<<20
for ; n < len(c.pendingLogs.lines); n++ {
ll := c.pendingLogs.lines[n]
// Each log line will require about 3 bytes of overhead.
nb := proto.Size(ll) + 3
if nb > rem {
break
}
rem -= nb
}
lines := c.pendingLogs.lines[:n]
c.pendingLogs.lines = c.pendingLogs.lines[n:]
c.pendingLogs.Unlock()
if len(lines) == 0 && !force {
// Nothing to flush.
return false
}
rescueLogs := false
defer func() {
if rescueLogs {
c.pendingLogs.Lock()
c.pendingLogs.lines = append(lines, c.pendingLogs.lines...)
c.pendingLogs.Unlock()
}
}()
buf, err := proto.Marshal(&logpb.UserAppLogGroup{
LogLine: lines,
})
if err != nil {
log.Printf("internal.flushLog: marshaling UserAppLogGroup: %v", err)
rescueLogs = true
return false
}
req := &logpb.FlushRequest{
Logs: buf,
}
res := &basepb.VoidProto{}
c.pendingLogs.Lock()
c.pendingLogs.flushes++
c.pendingLogs.Unlock()
if err := Call(toContext(c), "logservice", "Flush", req, res); err != nil {
log.Printf("internal.flushLog: Flush RPC: %v", err)
rescueLogs = true
return false
}
return true
}
const (
// Log flushing parameters.
flushInterval = 1 * time.Second
forceFlushInterval = 60 * time.Second
)
func (c *context) logFlusher(stop <-chan int) {
lastFlush := time.Now()
tick := time.NewTicker(flushInterval)
for {
select {
case <-stop:
// Request finished.
tick.Stop()
return
case <-tick.C:
force := time.Now().Sub(lastFlush) > forceFlushInterval
if c.flushLog(force) {
lastFlush = time.Now()
}
}
}
}
func ContextForTesting(req *http.Request) netcontext.Context {
return toContext(&context{req: req})
}

169
vendor/google.golang.org/appengine/internal/api_classic.go generated vendored Normal file
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@ -0,0 +1,169 @@
// Copyright 2015 Google Inc. All rights reserved.
// Use of this source code is governed by the Apache 2.0
// license that can be found in the LICENSE file.
// +build appengine
package internal
import (
"errors"
"fmt"
"net/http"
"time"
"appengine"
"appengine_internal"
basepb "appengine_internal/base"
"github.com/golang/protobuf/proto"
netcontext "golang.org/x/net/context"
)
var contextKey = "holds an appengine.Context"
// fromContext returns the App Engine context or nil if ctx is not
// derived from an App Engine context.
func fromContext(ctx netcontext.Context) appengine.Context {
c, _ := ctx.Value(&contextKey).(appengine.Context)
return c
}
// This is only for classic App Engine adapters.
func ClassicContextFromContext(ctx netcontext.Context) (appengine.Context, error) {
c := fromContext(ctx)
if c == nil {
return nil, errNotAppEngineContext
}
return c, nil
}
func withContext(parent netcontext.Context, c appengine.Context) netcontext.Context {
ctx := netcontext.WithValue(parent, &contextKey, c)
s := &basepb.StringProto{}
c.Call("__go__", "GetNamespace", &basepb.VoidProto{}, s, nil)
if ns := s.GetValue(); ns != "" {
ctx = NamespacedContext(ctx, ns)
}
return ctx
}
func IncomingHeaders(ctx netcontext.Context) http.Header {
if c := fromContext(ctx); c != nil {
if req, ok := c.Request().(*http.Request); ok {
return req.Header
}
}
return nil
}
func ReqContext(req *http.Request) netcontext.Context {
return WithContext(netcontext.Background(), req)
}
func WithContext(parent netcontext.Context, req *http.Request) netcontext.Context {
c := appengine.NewContext(req)
return withContext(parent, c)
}
type testingContext struct {
appengine.Context
req *http.Request
}
func (t *testingContext) FullyQualifiedAppID() string { return "dev~testcontext" }
func (t *testingContext) Call(service, method string, _, _ appengine_internal.ProtoMessage, _ *appengine_internal.CallOptions) error {
if service == "__go__" && method == "GetNamespace" {
return nil
}
return fmt.Errorf("testingContext: unsupported Call")
}
func (t *testingContext) Request() interface{} { return t.req }
func ContextForTesting(req *http.Request) netcontext.Context {
return withContext(netcontext.Background(), &testingContext{req: req})
}
func Call(ctx netcontext.Context, service, method string, in, out proto.Message) error {
if ns := NamespaceFromContext(ctx); ns != "" {
if fn, ok := NamespaceMods[service]; ok {
fn(in, ns)
}
}
if f, ctx, ok := callOverrideFromContext(ctx); ok {
return f(ctx, service, method, in, out)
}
// Handle already-done contexts quickly.
select {
case <-ctx.Done():
return ctx.Err()
default:
}
c := fromContext(ctx)
if c == nil {
// Give a good error message rather than a panic lower down.
return errNotAppEngineContext
}
// Apply transaction modifications if we're in a transaction.
if t := transactionFromContext(ctx); t != nil {
if t.finished {
return errors.New("transaction context has expired")
}
applyTransaction(in, &t.transaction)
}
var opts *appengine_internal.CallOptions
if d, ok := ctx.Deadline(); ok {
opts = &appengine_internal.CallOptions{
Timeout: d.Sub(time.Now()),
}
}
err := c.Call(service, method, in, out, opts)
switch v := err.(type) {
case *appengine_internal.APIError:
return &APIError{
Service: v.Service,
Detail: v.Detail,
Code: v.Code,
}
case *appengine_internal.CallError:
return &CallError{
Detail: v.Detail,
Code: v.Code,
Timeout: v.Timeout,
}
}
return err
}
func handleHTTP(w http.ResponseWriter, r *http.Request) {
panic("handleHTTP called; this should be impossible")
}
func logf(c appengine.Context, level int64, format string, args ...interface{}) {
var fn func(format string, args ...interface{})
switch level {
case 0:
fn = c.Debugf
case 1:
fn = c.Infof
case 2:
fn = c.Warningf
case 3:
fn = c.Errorf
case 4:
fn = c.Criticalf
default:
// This shouldn't happen.
fn = c.Criticalf
}
fn(format, args...)
}

123
vendor/google.golang.org/appengine/internal/api_common.go generated vendored Normal file
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@ -0,0 +1,123 @@
// Copyright 2015 Google Inc. All rights reserved.
// Use of this source code is governed by the Apache 2.0
// license that can be found in the LICENSE file.
package internal
import (
"errors"
"os"
"github.com/golang/protobuf/proto"
netcontext "golang.org/x/net/context"
)
var errNotAppEngineContext = errors.New("not an App Engine context")
type CallOverrideFunc func(ctx netcontext.Context, service, method string, in, out proto.Message) error
var callOverrideKey = "holds []CallOverrideFunc"
func WithCallOverride(ctx netcontext.Context, f CallOverrideFunc) netcontext.Context {
// We avoid appending to any existing call override
// so we don't risk overwriting a popped stack below.
var cofs []CallOverrideFunc
if uf, ok := ctx.Value(&callOverrideKey).([]CallOverrideFunc); ok {
cofs = append(cofs, uf...)
}
cofs = append(cofs, f)
return netcontext.WithValue(ctx, &callOverrideKey, cofs)
}
func callOverrideFromContext(ctx netcontext.Context) (CallOverrideFunc, netcontext.Context, bool) {
cofs, _ := ctx.Value(&callOverrideKey).([]CallOverrideFunc)
if len(cofs) == 0 {
return nil, nil, false
}
// We found a list of overrides; grab the last, and reconstitute a
// context that will hide it.
f := cofs[len(cofs)-1]
ctx = netcontext.WithValue(ctx, &callOverrideKey, cofs[:len(cofs)-1])
return f, ctx, true
}
type logOverrideFunc func(level int64, format string, args ...interface{})
var logOverrideKey = "holds a logOverrideFunc"
func WithLogOverride(ctx netcontext.Context, f logOverrideFunc) netcontext.Context {
return netcontext.WithValue(ctx, &logOverrideKey, f)
}
var appIDOverrideKey = "holds a string, being the full app ID"
func WithAppIDOverride(ctx netcontext.Context, appID string) netcontext.Context {
return netcontext.WithValue(ctx, &appIDOverrideKey, appID)
}
var namespaceKey = "holds the namespace string"
func withNamespace(ctx netcontext.Context, ns string) netcontext.Context {
return netcontext.WithValue(ctx, &namespaceKey, ns)
}
func NamespaceFromContext(ctx netcontext.Context) string {
// If there's no namespace, return the empty string.
ns, _ := ctx.Value(&namespaceKey).(string)
return ns
}
// FullyQualifiedAppID returns the fully-qualified application ID.
// This may contain a partition prefix (e.g. "s~" for High Replication apps),
// or a domain prefix (e.g. "example.com:").
func FullyQualifiedAppID(ctx netcontext.Context) string {
if id, ok := ctx.Value(&appIDOverrideKey).(string); ok {
return id
}
return fullyQualifiedAppID(ctx)
}
func Logf(ctx netcontext.Context, level int64, format string, args ...interface{}) {
if f, ok := ctx.Value(&logOverrideKey).(logOverrideFunc); ok {
f(level, format, args...)
return
}
c := fromContext(ctx)
if c == nil {
panic(errNotAppEngineContext)
}
logf(c, level, format, args...)
}
// NamespacedContext wraps a Context to support namespaces.
func NamespacedContext(ctx netcontext.Context, namespace string) netcontext.Context {
return withNamespace(ctx, namespace)
}
// SetTestEnv sets the env variables for testing background ticket in Flex.
func SetTestEnv() func() {
var environ = []struct {
key, value string
}{
{"GAE_LONG_APP_ID", "my-app-id"},
{"GAE_MINOR_VERSION", "067924799508853122"},
{"GAE_MODULE_INSTANCE", "0"},
{"GAE_MODULE_NAME", "default"},
{"GAE_MODULE_VERSION", "20150612t184001"},
}
for _, v := range environ {
old := os.Getenv(v.key)
os.Setenv(v.key, v.value)
v.value = old
}
return func() { // Restore old environment after the test completes.
for _, v := range environ {
if v.value == "" {
os.Unsetenv(v.key)
continue
}
os.Setenv(v.key, v.value)
}
}
}

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