Commit graph

441 commits

Author SHA1 Message Date
Richard Scothern
5bd2cfaddd Merge pull request #2000 from jessfraz/1950-comment-on-non-dryrun-as-well
storage/garbagecollect: add emit comments for when dryRun is false
2016-10-18 10:00:04 -07:00
Matt Bentley
3857f50825
Added new us-east-2 region for S3
Signed-off-by: Matt Bentley <mbentley@mbentley.net>
2016-10-18 12:30:34 -04:00
Richard Scothern
d0cdc4802b Merge pull request #2002 from lnr0626/1996-instance-roles-with-regionendpoint
Allow using ec2 roles when specifying region endpoint
2016-10-17 13:50:02 -07:00
Richard Scothern
a621a86cb4 Fix aliyun OSS Delete method's notion of subpaths
Deleting "/a" was deleting "/a/b" but also "/ab".

Signed-off-by: Richard Scothern <richard.scothern@docker.com>
2016-10-17 09:43:15 -07:00
Noah Treuhaft
12e73f01d2 Fix s3-goamz Delete method's notion of subpaths
Deleting "/a" was deleting "/a/b" but also "/ab".

Signed-off-by: Noah Treuhaft <noah.treuhaft@docker.com>
2016-10-17 09:43:15 -07:00
Richard Scothern
bd91493195 Satisfy the latest go lint rules
Signed-off-by: Richard Scothern <richard.scothern@docker.com>
2016-10-14 17:03:08 -07:00
Lloyd Ramey
c8ea7840d3 Allow using ec2 roles when specifying region endpoint
Signed-off-by: Lloyd Ramey <lnr0626@gmail.com>
2016-10-13 18:07:37 -04:00
Jess Frazelle
809774c33f
storage/garbagecollect: add emit commits for when dryRun is false
Signed-off-by: Jess Frazelle <acidburn@google.com>
2016-10-13 08:04:19 -07:00
Richard Scothern
252cc27ab1 Merge pull request #1988 from nwt/fix-s3-delete
Fix S3 Delete method's notion of subpaths
2016-10-11 11:14:29 -07:00
HuKeping
b984f91b32 Fix unit test
Signed-off-by: Hu Keping <hukeping@huawei.com>
2016-10-10 11:37:30 +08:00
Noah Treuhaft
76226c61a9 Fix S3 Delete method's notion of subpaths
Deleting "/a" was deleting "/a/b" but also "/ab".

Signed-off-by: Noah Treuhaft <noah.treuhaft@docker.com>
2016-10-06 11:21:55 -07:00
Derek McGowan
d35d94dcec
Update to fix lint errors
Context should use type values instead of strings.
Updated direct calls to WithValue, but still other uses of string keys.
Update Acl to ACL in s3 driver.

Signed-off-by: Derek McGowan <derek@mcgstyle.net> (github: dmcgowan)
2016-10-05 17:47:12 -07:00
Noah Treuhaft
cafeae4ecd Fix connection pool exhaustion in Redis tests
The Redis tests were failing with a "connection pool exhausted" error
from Redigo. Closing the connection used for FLUSHDB fixes the problem.

Signed-off-by: Noah Treuhaft <noah.treuhaft@docker.com>
2016-09-19 15:30:32 -07:00
Fabio Berchtold
7dcac52f18 Add v2 signature signing to S3 storage driver (#1800)
* Add v2 signature signing to S3 storage driver

Closes #1796
Closes #1606

Signed-off-by: Fabio Berchtold <fabio.berchtold@swisscom.com>

* use Logrus for debug logging

Signed-off-by: Fabio Berchtold <fabio.berchtold@swisscom.com>

* use 'date' instead of 'x-amz-date' in request header

Signed-off-by: Fabio Berchtold <fabio.berchtold@swisscom.com>

* only allow v4 signature signing against AWS S3

Signed-off-by: Fabio Berchtold <fabio.berchtold@swisscom.com>
2016-09-01 13:52:40 -07:00
Richard Scothern
49da29ee46 Merge pull request #1925 from dmcgowan/reenable-race-detector
Re-enable race detector in circleci
2016-09-01 13:36:12 -07:00
Derek McGowan
a50ce1ab93 Add locking to repository access in memory cache
Signed-off-by: Derek McGowan <derek@mcgstyle.net> (github: dmcgowan)
2016-08-26 18:10:42 -07:00
Matthew Green
dea554fc7c Swift driver now bulk deletes in chunks specified by the server (#1915)
Swift driver now bulk deletes in chunks specified by the server

Signed-off-by: Matthew Green <matthew.green@uk.ibm.com>
2016-08-24 10:09:25 -07:00
Noah Treuhaft
63468ef4a8 Use multipart upload API in S3 Move method
This change to the S3 Move method uses S3's multipart upload API to copy
objects whose size exceeds a threshold.  Parts are copied concurrently.
The level of concurrency, part size, and threshold are all configurable
with reasonable defaults.

Using the multipart upload API has two benefits.

* The S3 Move method can now handle objects over 5 GB, fixing #886.

* Moving most objects, and espectially large ones, is faster.  For
  example, moving a 1 GB object averaged 30 seconds but now averages 10.

Signed-off-by: Noah Treuhaft <noah.treuhaft@docker.com>
2016-08-16 10:53:24 -07:00
Stefan Majewsky
a7c6bfd59f [swift] support different user-domain and tenant-domain
This is already supported by ncw/swift, so we just need to pass the
parameters from the storage driver.

Signed-off-by: Stefan Majewsky <stefan.majewsky@sap.com>
2016-08-15 11:21:42 +02:00
Richard Scothern
c9fd26e9ef Merge pull request #1895 from hinshun/improve-enumerate
Improve catalog enumerate runtime by an order of magnitude
2016-08-11 10:53:36 -07:00
Richard Scothern
baca174469 Merge pull request #1892 from stevvooe/use-math-rand-reader
testutil, storage: use math/rand.Read where possible
2016-08-11 10:04:36 -07:00
Stephen J Day
040db51795
testutil, storage: use math/rand.Read where possible
Use the much faster math/rand.Read function where cryptographic
guarantees are not required. The unit test suite should speed up a
little bit but we've already optimized around this, so it may not
matter.

Signed-off-by: Stephen J Day <stephen.day@docker.com>
2016-08-10 14:26:12 -07:00
Edgar Lee
2f81b3b058 Improve catalog enumerate runtime by an order of magnitude
Signed-off-by: Edgar Lee <edgar.lee@docker.com>
2016-08-09 17:42:26 -07:00
Richard Scothern
9000745401 Merge pull request #1888 from stevvooe/more-efficient-path-comparison
registry/storage: more efficient path compare in catalog
2016-08-09 13:45:07 -07:00
Stephen J Day
308faf00f1
catalog: add benchmarks for overridden path comparison
Signed-off-by: Stephen J Day <stephen.day@docker.com>
2016-08-08 17:09:49 -07:00
Stephen J Day
bba5a0d05c
registry/storage: more efficient path compare in catalog
Previous component-wise path comparison is recursive and generates a
large amount of garbage. This more efficient version simply replaces the
path comparison with the zero-value to sort before everything. We do
this by replacing the byte-wise comparison that swaps a single character
inline for the separator comparison, such that separators sort first.

The resulting implementation provides component-wise path comparison
with no cost incurred for allocation or stack frame.

Direction of the comparison is also reversed to match Go style.

Signed-off-by: Stephen J Day <stephen.day@docker.com>
2016-08-08 15:55:26 -07:00
Edgar Lee
379312c148 Stop ErrFinishedWalk from escaping from Repositories walk
Signed-off-by: Edgar Lee <edgar.lee@docker.com>
2016-08-05 17:21:48 -07:00
Michal Minář
7365003236 Provide stat descriptor for Create method during cross-repo mount (#1857)
* Allow precomputed stats on cross-mounted blobs

Signed-off-by: Michal Minář <miminar@redhat.com>

* Extended cross-repo mount tests

Signed-off-by: Michal Minář <miminar@redhat.com>
2016-08-01 19:07:11 -07:00
Frank Chen
87917f3052 Add 'objectAcl' Option to the S3 Storage Backend (#1867)
* Add Object ACL Support to the S3 Storage Backend

Signed-off-by: Frank Chen <frankchn@gmail.com>

* Made changes per @RichardScothern's comments

Signed-off-by: Frank Chen <frankchn@gmail.com>

* Fix Typos

Signed-off-by: Frank Chen <frankchn@gmail.com>
2016-07-27 12:26:57 -07:00
Richard Scothern
c2a201dabf Merge pull request #1860 from Seb-Solon/master
Fix #1854
2016-07-22 10:04:01 -07:00
Richard Scothern
2287f1c42f Fix the build.
Pass the manifestURL directly into the schema2 manifest handler instead of
accessing through the repository as it has since the reference is now an
interface.

Signed-off-by: Richard Scothern <richard.scothern@docker.com>
2016-07-21 17:16:47 -07:00
Richard Scothern
2b72dd3927 Merge pull request #1829 from nwt/foreign-layer-host-whitelist
Add a foreign layer URL host whitelist
2016-07-21 16:02:20 -07:00
Aaron Lehmann
f56b143dc8 Merge pull request #1858 from RichardScothern/decouple
Decouple storage components by redefining dependencies as interfaces
2016-07-21 11:12:05 -07:00
Sebastien Coavoux
a9c9daf0f2 Fix: Compare path properly when list repository in catalog. #1854
Signed-off-by: Sebastien Coavoux <alignak@pyseb.cx>
2016-07-21 11:46:00 -04:00
Sebastien Coavoux
3290e2bef5 Enh: Test - Edit catalog_test to reproduce #1854
Signed-off-by: Sebastien Coavoux <alignak@pyseb.cx>
2016-07-21 11:23:19 -04:00
Richard Scothern
2a5fcacdf0 Decouple storage components by redefining dependencies as interfaces instead of concrete types
Signed-off-by: Richard Scothern <richard.scothern@docker.com>
2016-07-20 15:09:11 -07:00
Richard Scothern
857d0f15c0 Merge pull request #1757 from miminar/cross-mount-middleware-repository
Allow to use repo middleware wrapper during cross-repo mounts
2016-07-19 17:43:10 -07:00
Noah Treuhaft
61e5803b56 Add control over validation of URLs in pushed manifests
Until we have some experience hosting foreign layer manifests, the Hub
operators wish to limit foreign layers on Hub. To that end, this change
adds registry configuration options to restrict the URLs that may appear
in pushed manifests.

Signed-off-by: Noah Treuhaft <noah.treuhaft@docker.com>
2016-07-19 14:38:42 -07:00
Richard Scothern
f27ceb7ab5 Merge pull request #1710 from majewsky/swift/wait-for-dlo-segments-during-read
[Swift] add simple heuristic to detect incomplete DLOs during read ops
2016-07-19 09:07:44 -07:00
Derek McGowan
f8083b7ff3 Merge pull request #1836 from hinshun/catalog-walk-return-error
Fix storage drivers dropping non EOF errors when listing repositories
2016-07-15 14:29:50 -07:00
Derek McGowan
42a7e6e171 Merge pull request #1837 from RichardScothern/catalog-test
Use registry APIs to generate catalog test environment
2016-07-15 14:23:22 -07:00
Edgar Lee
3bfd03cbe6 Refactor errVal named parameter for catalog repositories to err
Signed-off-by: Edgar Lee <edgar.lee@docker.com>
2016-07-14 13:28:08 -07:00
Richard Scothern
b126d6643e Use distribution APIs to generate catalog test environment
Signed-off-by: Richard Scothern <richard.scothern@docker.com>
2016-07-14 09:58:19 -07:00
Edgar Lee
5a0b35ca10 Fix storage drivers dropping non EOF errors when listing repositories
This fixes errors other than io.EOF from being dropped when a storage driver
lists repositories. For example, filesystem driver may point to a missing
directory and errors, which then gets subsequently dropped.

Signed-off-by: Edgar Lee <edgar.lee@docker.com>
2016-07-13 16:41:51 -07:00
Richard Scothern
2052f29be6 Merge pull request #1827 from docker/ec2-creds
Allow EC2 IAM roles to be used when authorizing region endpoints
2016-07-11 13:05:41 -07:00
Noah Treuhaft
042bc06175 Properly validate multi-URL foreign layers
The existing code effectively ignored errors from all but the last of a
foreign layer's URLs.

Signed-off-by: Noah Treuhaft <noah.treuhaft@docker.com>
2016-07-11 12:13:42 -07:00
Richard Scothern
3da5f9088d Allow EC2 IAM roles to be used when authorizing region endpoints
Signed-off-by: Richard Scothern <richard.scothern@docker.com>
2016-07-11 10:54:57 -07:00
Stefan Majewsky
1f03d4e77d [Swift] add simple heuristic to detect incomplete DLOs during read ops
This is similar to waitForSegmentsToShowUp which is called during
Close/Commit. Intuitively, you wouldn't expect missing segments to be a
problem during read operations, since the previous Close/Commit
confirmed that all segments are there.

But due to the distributed nature of Swift, the read request could be
hitting a different storage node of the Swift cluster, where the
segments are still missing.

Load tests on my team's staging Swift cluster have shown this to occur
about once every 100-200 layer uploads when the Swift proxies are under
high load. The retry logic, borrowed from waitForSegmentsToShowUp, fixes
this temporary inconsistency.

Signed-off-by: Stefan Majewsky <stefan.majewsky@sap.com>
2016-07-08 13:47:41 +02:00
Michal Minář
3f1434525b Export storage.CreateOptions in top-level package
Let the options for `BlobStore.Create()` be modified in middleware
wrappers.

Signed-off-by: Michal Minar <miminar@redhat.com>
2016-07-06 16:40:46 +02:00
Cezar Sa Espinola
e015cbadd6
registry: avoid formatting errors with %#v
Signed-off-by: Cezar Sa Espinola <cezarsa@gmail.com>
2016-07-01 11:30:58 -03:00
Josh Chorlton
2d0a5ecc0e fixed s3 Delete bug due to read-after-delete inconsistency
Signed-off-by: Josh Chorlton <josh.chorlton@docker.com>
2016-06-28 14:22:15 -07:00
bin liu
913e12c8ff fix typos
Signed-off-by: bin liu <liubin0329@gmail.com>
2016-06-22 12:40:21 +08:00
Richard Scothern
edd7cb5249 Merge pull request #1739 from cezarsa/master
[Swift] Expose EndpointType parameter in driver
2016-06-15 10:33:48 -07:00
Richard Scothern
ccfa25cf00 If resumable digest support is disabled, detct this when closing the blobwriter
and allow the close to continue.  Also update the name of the function.

Signed-off-by: Richard Scothern <richard.scothern@docker.com>
2016-06-13 17:35:06 -07:00
Richard Scothern
1fc752c718 Merge pull request #1706 from aibaars/registry-size-close
Blobwriter: call BlobWriter.Size after BlobWriter.Close
2016-06-13 16:29:35 -07:00
Cezar Sa Espinola
7f72092940
Expose EndpointType parameter in swift storage driver
Signed-off-by: Cezar Sa Espinola <cezarsa@gmail.com>
2016-06-13 19:28:45 -03:00
allencloud
db90724ab0 fix typos
Signed-off-by: allencloud <allen.sun@daocloud.io>
2016-06-02 23:03:27 +08:00
Richard Scothern
df2184c810 Merge pull request #1627 from luckyraul/swift_auth_url
Swift auth version param
2016-06-01 11:23:23 -07:00
Richard Scothern
0c15ab6952 Remove signature store from registry. Return a generated signature for manifest
pull.

Signed-off-by: Richard Scothern <richard.scothern@docker.com>
2016-05-27 13:19:26 -07:00
Richard Scothern
32e9779faf Merge pull request #1734 from legionus/blob-access-controller
Add support for  blobAccessController middleware
2016-05-24 10:34:36 -07:00
John Starks
f0052b8434 Add support for layers from foreign sources
This will be used to support downloading Windows base layers from
Microsoft URLs.

Signed-off-by: John Starks <jostarks@microsoft.com>
2016-05-20 12:31:10 -07:00
Alexey Gladkov
f97eca5ad6 Add support for blobAccessController middleware
Signed-off-by: Michal Minar <miminar@redhat.com>
Signed-off-by: Alexey Gladkov <gladkov.alexey@gmail.com>
2016-05-19 14:02:15 +02:00
Richard Scothern
4f2ee029a2 Add 'us-gov-west-1' to the valid region list.
Signed-off-by: Richard Scothern <richard.scothern@docker.com>
2016-05-09 16:38:16 +01:00
Arthur Baars
eca581cf36 StorageDriver: GCS: allow Cancel on a closed FileWriter
Signed-off-by: Arthur Baars <arthur@semmle.com>
2016-05-06 13:04:30 +01:00
Arthur Baars
0490ff450b Blobwriter: call BlobWriter.Size after BlobWriter.Close
Signed-off-by: Arthur Baars <arthur@semmle.com>
2016-05-06 13:04:30 +01:00
Arthur Baars
1d782c38f2 StorageDriver: Test case for #1698
Signed-off-by: Arthur Baars <arthur@semmle.com>
2016-05-06 13:04:30 +01:00
Richard Scothern
c047d34b22 Merge pull request #1695 from tonyhb/add-regulator-to-filesystem
Add regulator to filesystem
2016-05-04 10:05:51 -07:00
Tony Holdstock-Brown
c9c62380ff Don't wrap thead limits when using a negative int
Signed-off-by: Tony Holdstock-Brown <tony@docker.com>
2016-05-03 16:03:44 -07:00
Tony Holdstock-Brown
33c448f147 Implement regulator in filesystem driver
This commit refactors base.regulator into the 2.4 interfaces and adds a
filesystem configuration option `maxthreads` to configure the regulator.

By default `maxthreads` is set to 100. This means the FS driver is
limited to 100 concurrent blocking file operations. Any subsequent
operations will block in Go until previous filesystem operations
complete.

This ensures that the registry can never open thousands of simultaneous
threads from os filesystem operations.

Note that `maxthreads` can never be less than 25.

Add test case covering parsable string maxthreads

Signed-off-by: Tony Holdstock-Brown <tony@docker.com>
2016-05-03 09:33:22 -07:00
Richard Scothern
5d08dfa70c Merge pull request #1650 from majewsky/swift/wait-for-dlo-segments
[Swift] wait for DLO segments to show up when Close()ing the writer
2016-05-02 13:41:26 -07:00
Derek McGowan
a1d7463d67 Merge pull request #1669 from RichardScothern/close-after-commit
Clean uploads
2016-04-29 16:18:29 -07:00
Richard Scothern
ba927007b0 Merge pull request #1677 from RichardScothern/tonyhb-fix-s3-gc-error
Move GC into storage package and add tests
2016-04-28 14:09:58 -07:00
Richard Scothern
a7dda2ce93 Merge pull request #1665 from andrewhsu/middleware-redirect
add middleware storage driver for redirect
2016-04-27 15:05:52 -07:00
Richard Scothern
d2e29acce0 When a blob upload is committed prevent writing out hashstate in the
subsequent close.

When a blob upload is cancelled close the blobwriter before removing
upload state to ensure old hashstates don't persist.

Signed-off-by: Richard Scothern <richard.scothern@docker.com>
2016-04-27 14:42:00 -07:00
Richard Scothern
69ba30dc03 Add a test with a missing _manifests directory
Signed-off-by: Richard Scothern <richard.scothern@docker.com>
2016-04-27 13:34:25 -07:00
Richard Scothern
ea492aca1a Move garbage collect code into storage package
Signed-off-by: Richard Scothern <richard.scothern@docker.com>
2016-04-27 13:34:25 -07:00
Josh Hawn
e4dd3359cc Regulate filesystem driver to max of 100 calls
It's easily possible for a flood of requests to trigger thousands of
concurrent file accesses on the storage driver. Each file I/O call creates
a new OS thread that is not reaped by the Golang runtime. By limiting it
to only 100 at a time we can effectively bound the number of OS threads
in use by the storage driver.

Docker-DCO-1.1-Signed-off-by: Josh Hawn <josh.hawn@docker.com> (github: jlhawn)

Signed-off-by: Tony Holdstock-Brown <tony@docker.com>
2016-04-26 14:44:13 -07:00
Andrew Hsu
09a9b0cf90 separate the go/non-go imports and reorder
Signed-off-by: Andrew Hsu <andrewhsu@acm.org> (github: andrewhsu)
2016-04-26 14:33:54 -07:00
Richard Scothern
c83afea0c9 Merge pull request #1660 from jhaohai/cn-north-1-fix
Add cn-north-1 to valid check
2016-04-25 16:07:54 -07:00
Richard Scothern
ef32134592 Merge pull request #1666 from sergeyfd/master
Add blobWrtiter.Close() call into blobWriter.Commit()
2016-04-25 16:02:48 -07:00
Andrew Hsu
c4df027d41 modify redirect test to include port
Signed-off-by: Andrew Hsu <andrewhsu@acm.org> (github: andrewhsu)
2016-04-25 11:52:46 -07:00
Andrew Hsu
80248c3d3a scheme and host mandatory in baseurl
Signed-off-by: Andrew Hsu <andrewhsu@acm.org> (github: andrewhsu)
2016-04-25 11:52:25 -07:00
Andrew Hsu
059bc5f5ef separate the go/non-go imports and reorder
Signed-off-by: Andrew Hsu <andrewhsu@acm.org> (github: andrewhsu)
2016-04-25 11:52:03 -07:00
Anis Elleuch
987faca8a6 Sorting completed parts by part number for a better accordance with the S3 spec
Signed-off-by: Anis Elleuch <vadmeste@gmail.com>
2016-04-23 22:36:04 +01:00
Serge Dubrouski
21f38a74e6 Add blobWrtiter.Close() call into blobWriter.Commit()
Signed-off-by: Serge Dubrouski <sergeyfd@gmail.com>
2016-04-22 19:23:17 -06:00
Andrew Hsu
4b217ccbf5 add middleware storage driver for redirect
Signed-off-by: Andrew Hsu <andrewhsu@acm.org> (github: andrewhsu)
2016-04-21 16:02:52 -07:00
jhaohai
f76c622d8c add cn-north-1 to valid check
Signed-off-by: jhaohai <jhaohai@foxmail.com>
2016-04-21 11:51:34 +08:00
Stefan Majewsky
9a67520af7 wait for DLO segments to show up when Close()ing the writer
Not just when Commit()ing the result. This fixes some errors I observed
when the layer (i.e. the DLO) is Stat()ed immediately after closing,
and reports the wrong file size because the container listing is not
yet up-to-date.

Signed-off-by: Stefan Majewsky <stefan.majewsky@sap.com>
2016-04-19 14:31:49 +02:00
Nikita Tarasov
b4f060599a docs + fix test
Signed-off-by: Nikita Tarasov <nikita@mygento.ru>
2016-04-17 20:05:51 +03:00
Nikita Tarasov
b51607f9f0 fix test
Signed-off-by: Nikita Tarasov <nikita@mygento.ru>

Signed-off-by: Nikita Tarasov <nikita@mygento.ru>
2016-04-17 19:52:40 +03:00
Nikita
bcb7989fca test
Signed-off-by: Nikita Tarasov <nikita@mygento.ru>
2016-04-13 18:49:38 +03:00
Nikita
e6f8d7c28e Update swift.go
Signed-off-by: Nikita Tarasov <nikita@mygento.ru>
2016-04-13 18:49:25 +03:00
Richard Scothern
4c119524f1 Merge pull request #1604 from ArdaXi/custom-s3-skip-region-check
Only check validity of S3 region if not using custom endpoint
2016-04-08 15:38:24 -07:00
Stefan Majewsky
67321cb622 detect outdated container listings during Stat() and getAllSegments()
Signed-off-by: Stefan Majewsky <stefan.majewsky@sap.com>
2016-04-06 15:21:27 +02:00
Arien Holthuizen
dbb6e28da2 Only check validity of S3 region if not using custom endpoint
Signed-off-by: Arien Holthuizen <aholthuizen@schubergphilis.com>
2016-04-06 13:38:09 +02:00
Richard Scothern
04ff3c0359 Merge pull request #1578 from majewsky/do-not-swallow-error
don't swallow errors in Swift driver's GetContent()
2016-03-30 17:46:27 -07:00
Richard Scothern
4324b70c50 Fix signature handling with GC.
If a schema 1 manifest is uploaded with the `disablesignaturestore` option set
to true, then no signatures will exist.  Handle this case.

If a schema 1 manifest is pushed, deleted, garbage collected and pushed again, the
repository will contain signature links from the first version, but the blobs will
not exist.  Disable the signature store in the garbage-collect command so
signatures are not fetched.

Signed-off-by: Richard Scothern <richard.scothern@docker.com>
2016-03-30 16:10:27 -07:00
Richard Scothern
80b310ca44 Add a --dry-run flag. If enabled this will print the mark and sweep process
with removing any files.

Signed-off-by: Richard Scothern <richard.scothern@gmail.com>
2016-03-30 16:10:27 -07:00
Stefan Majewsky
4c9bed2507 don't swallow errors in Swift driver's GetContent()
In 326c3a9c49, which was only intended to
be a refactoring commit, the behavior of this block subtly changed so
that unknown types of errors would be swallowed instead of propagated.

I noticed this while investigating an error similar to #1539 aka
docker/docker#21290. It appears that during GetContent() for a
hashstate, the Swift proxy produces an error. Since this error was
silently swallowed, an empty []byte is used to restart the hash, then
producing the digest of the empty string instead of the layer's digest.

This PR will not fix the issue, but it should make the actual error more
visible by propagating it into `blobWriter#resumeDigest' and
'blobWriter#validateBlob', respectively.

Signed-off-by: Stefan Majewsky <stefan.majewsky@sap.com>
2016-03-30 16:11:29 +02:00
Aaron Schlesinger
f4bdc6287a Remove the example
Instead, direct users to the one in the factory package

Signed-off-by: Aaron Schlesinger <aschlesinger@deis.com>
2016-03-29 14:42:28 -07:00