forked from TrueCloudLab/distribution
Merge remote-tracking branch 'upstream-registry/next-generation'
This commit is contained in:
Stephen J Day
commit
bd631a32b3
13 changed files with 3823 additions and 282 deletions
|
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@ -1,9 +1,246 @@
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package v2
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import "net/http"
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import (
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"net/http"
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"regexp"
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// TODO(stevvooe): Add route descriptors for each named route, along with
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// accepted methods, parameters, returned status codes and error codes.
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"github.com/docker/docker-registry/common"
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"github.com/docker/docker-registry/digest"
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)
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var (
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nameParameterDescriptor = ParameterDescriptor{
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Name: "name",
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Type: "string",
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Format: common.RepositoryNameRegexp.String(),
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Required: true,
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Description: `Name of the target repository.`,
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}
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tagParameterDescriptor = ParameterDescriptor{
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Name: "tag",
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Type: "string",
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Format: common.TagNameRegexp.String(),
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Required: true,
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Description: `Tag of the target manifiest.`,
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}
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uuidParameterDescriptor = ParameterDescriptor{
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Name: "uuid",
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Type: "opaque",
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Required: true,
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Description: `A uuid identifying the upload. This field can accept almost anything.`,
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}
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digestPathParameter = ParameterDescriptor{
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Name: "digest",
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Type: "path",
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Required: true,
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Format: digest.DigestRegexp.String(),
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Description: `Digest of desired blob.`,
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}
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authHeader = ParameterDescriptor{
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Name: "Authorization",
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Type: "string",
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Description: "rfc7235 compliant authorization header.",
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Format: "<scheme> <token>",
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Examples: []string{"Bearer dGhpcyBpcyBhIGZha2UgYmVhcmVyIHRva2VuIQ=="},
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}
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authChallengeHeader = ParameterDescriptor{
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Name: "WWW-Authenticate",
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Type: "string",
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Description: "An RFC7235 compliant authentication challenge header.",
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Format: `<scheme> realm="<realm>", ..."`,
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Examples: []string{
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`Bearer realm="https://auth.docker.com/", service="registry.docker.com", scopes="repository:library/ubuntu:pull"`,
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},
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}
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contentLengthZeroHeader = ParameterDescriptor{
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Name: "Content-Length",
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Description: "The `Content-Length` header must be zero and the body must be empty.",
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Type: "integer",
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Format: "0",
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}
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)
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const (
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manifestBody = `{
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"name": <name>,
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"tag": <tag>,
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"fsLayers": [
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{
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"blobSum": <tarsum>
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},
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...
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]
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],
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"history": <v1 images>,
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"signature": <JWS>
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}`
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errorsBody = `{
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"errors:" [{
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"code": <error code>,
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"message": "<error message>",
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"detail": ...
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},
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...
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]
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}`
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)
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// APIDescriptor exports descriptions of the layout of the v2 registry API.
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var APIDescriptor = struct {
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// RouteDescriptors provides a list of the routes available in the API.
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RouteDescriptors []RouteDescriptor
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// ErrorDescriptors provides a list of the error codes and their
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// associated documentation and metadata.
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ErrorDescriptors []ErrorDescriptor
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}{
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RouteDescriptors: routeDescriptors,
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ErrorDescriptors: errorDescriptors,
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}
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// RouteDescriptor describes a route specified by name.
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type RouteDescriptor struct {
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// Name is the name of the route, as specified in RouteNameXXX exports.
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// These names a should be considered a unique reference for a route. If
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// the route is registered with gorilla, this is the name that will be
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// used.
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Name string
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// Path is a gorilla/mux-compatible regexp that can be used to match the
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// route. For any incoming method and path, only one route descriptor
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// should match.
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Path string
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// Entity should be a short, human-readalbe description of the object
|
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// targeted by the endpoint.
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Entity string
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|
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// Description should provide an accurate overview of the functionality
|
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// provided by the route.
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Description string
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|
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// Methods should describe the various HTTP methods that may be used on
|
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// this route, including request and response formats.
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Methods []MethodDescriptor
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}
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|
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// MethodDescriptor provides a description of the requests that may be
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// conducted with the target method.
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type MethodDescriptor struct {
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// Method is an HTTP method, such as GET, PUT or POST.
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Method string
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// Description should provide an overview of the functionality provided by
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// the covered method, suitable for use in documentation. Use of markdown
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// here is encouraged.
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Description string
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|
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// Requests is a slice of request descriptors enumerating how this
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// endpoint may be used.
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Requests []RequestDescriptor
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}
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|
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// RequestDescriptor covers a particular set of headers and parameters that
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// can be carried out with the parent method. Its most helpful to have one
|
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// RequestDescriptor per API use case.
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type RequestDescriptor struct {
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// Name provides a short identifier for the request, usable as a title or
|
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// to provide quick context for the particalar request.
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Name string
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|
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// Description should cover the requests purpose, covering any details for
|
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// this particular use case.
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Description string
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|
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// Headers describes headers that must be used with the HTTP request.
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Headers []ParameterDescriptor
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|
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// PathParameters enumerate the parameterized path components for the
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// given request, as defined in the route's regular expression.
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PathParameters []ParameterDescriptor
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|
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// QueryParameters provides a list of query parameters for the given
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// request.
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QueryParameters []ParameterDescriptor
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// Body describes the format of the request body.
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Body BodyDescriptor
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|
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// Successes enumerates the possible responses that are considered to be
|
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// the result of a successful request.
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Successes []ResponseDescriptor
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// Failures covers the possible failures from this particular request.
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Failures []ResponseDescriptor
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}
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// ResponseDescriptor describes the components of an API response.
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type ResponseDescriptor struct {
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// Name provides a short identifier for the response, usable as a title or
|
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// to provide quick context for the particalar response.
|
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Name string
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|
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// Description should provide a brief overview of the role of the
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// response.
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Description string
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// StatusCode specifies the status recieved by this particular response.
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StatusCode int
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// Headers covers any headers that may be returned from the response.
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Headers []ParameterDescriptor
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|
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// ErrorCodes enumerates the error codes that may be returned along with
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// the response.
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ErrorCodes []ErrorCode
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|
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// Body describes the body of the response, if any.
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Body BodyDescriptor
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}
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|
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// BodyDescriptor describes a request body and its expected content type. For
|
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// the most part, it should be example json or some placeholder for body
|
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// data in documentation.
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type BodyDescriptor struct {
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ContentType string
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Format string
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}
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|
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// ParameterDescriptor describes the format of a request parameter, which may
|
||||
// be a header, path parameter or query parameter.
|
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type ParameterDescriptor struct {
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// Name is the name of the parameter, either of the path component or
|
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// query parameter.
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Name string
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// Type specifies the type of the parameter, such as string, integer, etc.
|
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Type string
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// Description provides a human-readable description of the parameter.
|
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Description string
|
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|
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// Required means the field is required when set.
|
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Required bool
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||||
|
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// Format is a specifying the string format accepted by this parameter.
|
||||
Format string
|
||||
|
||||
// Regexp is a compiled regular expression that can be used to validate
|
||||
// the contents of the parameter.
|
||||
Regexp *regexp.Regexp
|
||||
|
||||
// Examples provides multiple examples for the values that might be valid
|
||||
// for this parameter.
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||||
Examples []string
|
||||
}
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||||
|
||||
// ErrorDescriptor provides relevant information about a given error code.
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type ErrorDescriptor struct {
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|
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@ -29,9 +266,613 @@ type ErrorDescriptor struct {
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HTTPStatusCodes []int
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}
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var routeDescriptors = []RouteDescriptor{
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{
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Name: RouteNameBase,
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Path: "/v2/",
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Entity: "Base",
|
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Description: `Base V2 API route. Typically, this can be used for lightweight version checks and to validate registry authorization.`,
|
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Methods: []MethodDescriptor{
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{
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Method: "GET",
|
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Description: "Check that the endpoint implements Docker Registry API V2.",
|
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Requests: []RequestDescriptor{
|
||||
{
|
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Headers: []ParameterDescriptor{
|
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authHeader,
|
||||
},
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Successes: []ResponseDescriptor{
|
||||
{
|
||||
Description: "The API implements V2 protocol and is accessible.",
|
||||
StatusCode: http.StatusOK,
|
||||
},
|
||||
},
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Failures: []ResponseDescriptor{
|
||||
{
|
||||
Description: "The client is not authorized to access the registry.",
|
||||
StatusCode: http.StatusUnauthorized,
|
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Headers: []ParameterDescriptor{
|
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authChallengeHeader,
|
||||
},
|
||||
},
|
||||
{
|
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Description: "The registry does not implement the V2 API.",
|
||||
StatusCode: http.StatusNotFound,
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
{
|
||||
Name: RouteNameTags,
|
||||
Path: "/v2/{name:" + common.RepositoryNameRegexp.String() + "}/tags/list",
|
||||
Entity: "Tags",
|
||||
Description: "Retrieve information about tags.",
|
||||
Methods: []MethodDescriptor{
|
||||
{
|
||||
Method: "GET",
|
||||
Description: "Fetch the tags under the repository identified by `name`.",
|
||||
Requests: []RequestDescriptor{
|
||||
{
|
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PathParameters: []ParameterDescriptor{
|
||||
nameParameterDescriptor,
|
||||
},
|
||||
Successes: []ResponseDescriptor{
|
||||
{
|
||||
StatusCode: http.StatusOK,
|
||||
Description: "A list of tags for the named repository.",
|
||||
Body: BodyDescriptor{
|
||||
ContentType: "application/json",
|
||||
Format: `{
|
||||
"name": <name>,
|
||||
"tags": [
|
||||
<tag>,
|
||||
...
|
||||
]
|
||||
}`,
|
||||
},
|
||||
},
|
||||
},
|
||||
Failures: []ResponseDescriptor{
|
||||
{
|
||||
StatusCode: http.StatusNotFound,
|
||||
Description: "The repository is not known to the registry.",
|
||||
},
|
||||
{
|
||||
StatusCode: http.StatusUnauthorized,
|
||||
Description: "The client doesn't have access to repository.",
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
{
|
||||
Name: RouteNameManifest,
|
||||
Path: "/v2/{name:" + common.RepositoryNameRegexp.String() + "}/manifests/{tag:" + common.TagNameRegexp.String() + "}",
|
||||
Entity: "Manifest",
|
||||
Description: "Create, update and retrieve manifests.",
|
||||
Methods: []MethodDescriptor{
|
||||
{
|
||||
Method: "GET",
|
||||
Description: "Fetch the manifest identified by `name` and `tag`.",
|
||||
Requests: []RequestDescriptor{
|
||||
{
|
||||
PathParameters: []ParameterDescriptor{
|
||||
nameParameterDescriptor,
|
||||
tagParameterDescriptor,
|
||||
},
|
||||
Successes: []ResponseDescriptor{
|
||||
{
|
||||
Description: "The manifest idenfied by `name` and `tag`.",
|
||||
StatusCode: http.StatusOK,
|
||||
Body: BodyDescriptor{
|
||||
ContentType: "application/json",
|
||||
Format: manifestBody,
|
||||
},
|
||||
},
|
||||
},
|
||||
Failures: []ResponseDescriptor{
|
||||
{
|
||||
Description: "The name or tag was invalid.",
|
||||
StatusCode: http.StatusBadRequest,
|
||||
ErrorCodes: []ErrorCode{
|
||||
ErrorCodeNameInvalid,
|
||||
ErrorCodeTagInvalid,
|
||||
},
|
||||
Body: BodyDescriptor{
|
||||
ContentType: "application/json",
|
||||
Format: errorsBody,
|
||||
},
|
||||
},
|
||||
{
|
||||
Description: "The named manifest is not known to the registry.",
|
||||
StatusCode: http.StatusNotFound,
|
||||
ErrorCodes: []ErrorCode{
|
||||
ErrorCodeNameUnknown,
|
||||
ErrorCodeManifestUnknown,
|
||||
},
|
||||
Body: BodyDescriptor{
|
||||
ContentType: "application/json",
|
||||
Format: errorsBody,
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
{
|
||||
Method: "PUT",
|
||||
Description: "Put the manifest identified by `name` and `tag`.",
|
||||
Requests: []RequestDescriptor{
|
||||
{
|
||||
Headers: []ParameterDescriptor{
|
||||
authHeader,
|
||||
},
|
||||
PathParameters: []ParameterDescriptor{
|
||||
nameParameterDescriptor,
|
||||
tagParameterDescriptor,
|
||||
},
|
||||
Body: BodyDescriptor{
|
||||
ContentType: "application/json",
|
||||
Format: manifestBody,
|
||||
},
|
||||
Successes: []ResponseDescriptor{
|
||||
{
|
||||
StatusCode: http.StatusAccepted,
|
||||
},
|
||||
},
|
||||
Failures: []ResponseDescriptor{
|
||||
{
|
||||
StatusCode: http.StatusBadRequest,
|
||||
ErrorCodes: []ErrorCode{
|
||||
ErrorCodeNameInvalid,
|
||||
ErrorCodeTagInvalid,
|
||||
ErrorCodeManifestInvalid,
|
||||
ErrorCodeManifestUnverified,
|
||||
ErrorCodeBlobUnknown,
|
||||
},
|
||||
},
|
||||
{
|
||||
Description: "One or more layers may be missing during a manifest upload. If so, the missing layers will be enumerated in the error response.",
|
||||
StatusCode: http.StatusBadRequest,
|
||||
ErrorCodes: []ErrorCode{
|
||||
ErrorCodeBlobUnknown,
|
||||
},
|
||||
Body: BodyDescriptor{
|
||||
ContentType: "application/json",
|
||||
Format: `{
|
||||
"errors:" [{
|
||||
"code": "BLOB_UNKNOWN",
|
||||
"message": "blob unknown to registry",
|
||||
"detail": {
|
||||
"digest": <tarsum>
|
||||
}
|
||||
},
|
||||
...
|
||||
]
|
||||
}`,
|
||||
},
|
||||
},
|
||||
{
|
||||
StatusCode: http.StatusUnauthorized,
|
||||
Headers: []ParameterDescriptor{
|
||||
authChallengeHeader,
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
{
|
||||
Method: "DELETE",
|
||||
Description: "Delete the manifest identified by `name` and `tag`.",
|
||||
Requests: []RequestDescriptor{
|
||||
{
|
||||
Headers: []ParameterDescriptor{
|
||||
authHeader,
|
||||
},
|
||||
PathParameters: []ParameterDescriptor{
|
||||
nameParameterDescriptor,
|
||||
tagParameterDescriptor,
|
||||
},
|
||||
Successes: []ResponseDescriptor{
|
||||
{
|
||||
StatusCode: http.StatusAccepted,
|
||||
},
|
||||
},
|
||||
Failures: []ResponseDescriptor{
|
||||
{
|
||||
StatusCode: http.StatusBadRequest,
|
||||
ErrorCodes: []ErrorCode{
|
||||
ErrorCodeNameInvalid,
|
||||
ErrorCodeTagInvalid,
|
||||
},
|
||||
},
|
||||
{
|
||||
StatusCode: http.StatusUnauthorized,
|
||||
Headers: []ParameterDescriptor{
|
||||
authChallengeHeader,
|
||||
},
|
||||
},
|
||||
{
|
||||
StatusCode: http.StatusNotFound,
|
||||
ErrorCodes: []ErrorCode{
|
||||
ErrorCodeNameUnknown,
|
||||
ErrorCodeManifestUnknown,
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
|
||||
{
|
||||
Name: RouteNameBlob,
|
||||
Path: "/v2/{name:" + common.RepositoryNameRegexp.String() + "}/blobs/{digest:" + digest.DigestRegexp.String() + "}",
|
||||
Entity: "Blob",
|
||||
Description: "Fetch the blob identified by `name` and `digest`. Used to fetch layers by tarsum digest.",
|
||||
Methods: []MethodDescriptor{
|
||||
|
||||
{
|
||||
Method: "GET",
|
||||
Description: "Retrieve the blob from the registry identified by `digest`.",
|
||||
Requests: []RequestDescriptor{
|
||||
{
|
||||
PathParameters: []ParameterDescriptor{
|
||||
nameParameterDescriptor,
|
||||
digestPathParameter,
|
||||
},
|
||||
Successes: []ResponseDescriptor{
|
||||
{
|
||||
Description: "The blob identified by `digest` is available. The blob content will be present in the body of the request.",
|
||||
StatusCode: http.StatusOK,
|
||||
Body: BodyDescriptor{
|
||||
ContentType: "application/octet-stream",
|
||||
Format: "<blob binary data>",
|
||||
},
|
||||
},
|
||||
{
|
||||
Description: "The blob identified by `digest` is available at the provided location.",
|
||||
StatusCode: http.StatusTemporaryRedirect,
|
||||
Headers: []ParameterDescriptor{
|
||||
{
|
||||
Name: "Location",
|
||||
Type: "url",
|
||||
Description: "The location where the layer should be accessible.",
|
||||
Format: "<blob location>",
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
Failures: []ResponseDescriptor{
|
||||
{
|
||||
StatusCode: http.StatusBadRequest,
|
||||
ErrorCodes: []ErrorCode{
|
||||
ErrorCodeNameInvalid,
|
||||
ErrorCodeDigestInvalid,
|
||||
},
|
||||
},
|
||||
{
|
||||
StatusCode: http.StatusUnauthorized,
|
||||
},
|
||||
{
|
||||
StatusCode: http.StatusNotFound,
|
||||
ErrorCodes: []ErrorCode{
|
||||
ErrorCodeNameUnknown,
|
||||
ErrorCodeBlobUnknown,
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
{
|
||||
Method: "HEAD",
|
||||
Description: "Check if the blob is known to the registry.",
|
||||
Requests: []RequestDescriptor{
|
||||
{
|
||||
PathParameters: []ParameterDescriptor{
|
||||
nameParameterDescriptor,
|
||||
digestPathParameter,
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
// TODO(stevvooe): We may want to add a PUT request here to
|
||||
// kickoff an upload of a blob, integrated with the blob upload
|
||||
// API.
|
||||
},
|
||||
},
|
||||
|
||||
{
|
||||
Name: RouteNameBlobUpload,
|
||||
Path: "/v2/{name:" + common.RepositoryNameRegexp.String() + "}/blobs/uploads/",
|
||||
Entity: "Intiate Blob Upload",
|
||||
Description: "Initiate a blob upload. This endpoint can be used to create resumable uploads or monolithic uploads.",
|
||||
Methods: []MethodDescriptor{
|
||||
{
|
||||
Method: "POST",
|
||||
Description: "Initiate a resumable blob upload. If successful, an upload location will be provided to complete the upload. Optionally, if the `digest` parameter is present, the request body will be used to complete the upload in a single request.",
|
||||
Requests: []RequestDescriptor{
|
||||
{
|
||||
Name: "Initiate Monolithic Blob Upload",
|
||||
Description: "Upload a blob identified by the `digest` parameter in single request. This upload will not be resumable unless a recoverable error is returned.",
|
||||
Headers: []ParameterDescriptor{
|
||||
authHeader,
|
||||
{
|
||||
Name: "Content-Length",
|
||||
Type: "integer",
|
||||
Format: "<length of blob>",
|
||||
},
|
||||
},
|
||||
PathParameters: []ParameterDescriptor{
|
||||
nameParameterDescriptor,
|
||||
},
|
||||
QueryParameters: []ParameterDescriptor{
|
||||
{
|
||||
Name: "digest",
|
||||
Type: "query",
|
||||
Format: "<tarsum>",
|
||||
Regexp: digest.DigestRegexp,
|
||||
Description: `Digest of uploaded blob. If present, the upload will be completed, in a single request, with contents of the request body as the resulting blob.`,
|
||||
},
|
||||
},
|
||||
Body: BodyDescriptor{
|
||||
ContentType: "application/octect-stream",
|
||||
Format: "<binary data>",
|
||||
},
|
||||
Successes: []ResponseDescriptor{
|
||||
{
|
||||
StatusCode: http.StatusCreated,
|
||||
Headers: []ParameterDescriptor{
|
||||
{
|
||||
Name: "Location",
|
||||
Type: "url",
|
||||
Format: "<blob location>",
|
||||
},
|
||||
contentLengthZeroHeader,
|
||||
},
|
||||
},
|
||||
},
|
||||
Failures: []ResponseDescriptor{
|
||||
{
|
||||
Name: "Invalid Name or Digest",
|
||||
StatusCode: http.StatusBadRequest,
|
||||
ErrorCodes: []ErrorCode{
|
||||
ErrorCodeDigestInvalid,
|
||||
ErrorCodeNameInvalid,
|
||||
},
|
||||
},
|
||||
{
|
||||
Name: "Unauthorized",
|
||||
StatusCode: http.StatusUnauthorized,
|
||||
Headers: []ParameterDescriptor{
|
||||
authChallengeHeader,
|
||||
},
|
||||
ErrorCodes: []ErrorCode{
|
||||
ErrorCodeDigestInvalid,
|
||||
ErrorCodeNameInvalid,
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
{
|
||||
Name: "Initiate Resumable Blob Upload",
|
||||
Description: "Initiate a resumable blob upload with an empty request body.",
|
||||
Headers: []ParameterDescriptor{
|
||||
authHeader,
|
||||
contentLengthZeroHeader,
|
||||
},
|
||||
PathParameters: []ParameterDescriptor{
|
||||
nameParameterDescriptor,
|
||||
},
|
||||
Successes: []ResponseDescriptor{
|
||||
{
|
||||
Description: "The upload has been created. The `Location` header must be used to complete the upload. The response should identical to a `GET` request on the contents of the returned `Location` header.",
|
||||
StatusCode: http.StatusAccepted,
|
||||
Headers: []ParameterDescriptor{
|
||||
contentLengthZeroHeader,
|
||||
{
|
||||
Name: "Location",
|
||||
Type: "url",
|
||||
Format: "/v2/<name>/blobs/uploads/<uuid>",
|
||||
Description: "The location of the created upload. Clients should use the contents verbatim to complete the upload, adding parameters where required.",
|
||||
},
|
||||
{
|
||||
Name: "Range",
|
||||
Format: "0-0",
|
||||
Description: "Range header indicating the progress of the upload. When starting an upload, it will return an empty range, since no content has been received.",
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
|
||||
{
|
||||
Name: RouteNameBlobUploadChunk,
|
||||
Path: "/v2/{name:" + common.RepositoryNameRegexp.String() + "}/blobs/uploads/{uuid}",
|
||||
Entity: "Blob Upload",
|
||||
Description: "Interact with blob uploads. Clients should never assemble URLs for this endpoint and should only take it through the `Location` header on related API requests.",
|
||||
Methods: []MethodDescriptor{
|
||||
{
|
||||
Method: "GET",
|
||||
Description: "Retrieve status of upload identified by `uuid`. The primary purpose of this endpoint is to resolve the current status of a resumable upload.",
|
||||
Requests: []RequestDescriptor{
|
||||
{
|
||||
Description: "Retrieve the progress of the current upload, as reported by the `Range` header.",
|
||||
PathParameters: []ParameterDescriptor{
|
||||
nameParameterDescriptor,
|
||||
uuidParameterDescriptor,
|
||||
},
|
||||
Successes: []ResponseDescriptor{
|
||||
{
|
||||
StatusCode: http.StatusNoContent,
|
||||
Headers: []ParameterDescriptor{
|
||||
{
|
||||
Name: "Range",
|
||||
Type: "header",
|
||||
Format: "0-<offset>",
|
||||
Description: "Range indicating the current progress of the upload.",
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
{
|
||||
Method: "HEAD",
|
||||
Description: "Retrieve status of upload identified by `uuid`. This is identical to the GET request.",
|
||||
Requests: []RequestDescriptor{
|
||||
{
|
||||
Description: "Retrieve the progress of the current upload, as reported by the `Range` header.",
|
||||
PathParameters: []ParameterDescriptor{
|
||||
nameParameterDescriptor,
|
||||
uuidParameterDescriptor,
|
||||
},
|
||||
Successes: []ResponseDescriptor{
|
||||
{
|
||||
StatusCode: http.StatusNoContent,
|
||||
Headers: []ParameterDescriptor{
|
||||
{
|
||||
Name: "Range",
|
||||
Type: "header",
|
||||
Format: "0-<offset>",
|
||||
Description: "Range indicating the current progress of the upload.",
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
{
|
||||
Method: "PATCH",
|
||||
Description: "Upload a chunk of data for the specified upload.",
|
||||
Requests: []RequestDescriptor{
|
||||
{
|
||||
Description: "Upload a chunk of data to specified upload without completing the upload.",
|
||||
PathParameters: []ParameterDescriptor{
|
||||
nameParameterDescriptor,
|
||||
uuidParameterDescriptor,
|
||||
},
|
||||
Headers: []ParameterDescriptor{
|
||||
{
|
||||
Name: "Content-Range",
|
||||
Type: "header",
|
||||
Format: "<start of range>-<end of range, inclusive>",
|
||||
Required: true,
|
||||
Description: "Range of bytes identifying the desired block of content represented by the body. Start must the end offset retrieved via status check plus one. Note that this is a non-standard use of the `Content-Range` header.",
|
||||
},
|
||||
{
|
||||
Name: "Content-Length",
|
||||
Type: "integer",
|
||||
Format: "<length of chunk>",
|
||||
Description: "Length of the chunk being uploaded, corresponding the length of the request body.",
|
||||
},
|
||||
},
|
||||
Body: BodyDescriptor{
|
||||
ContentType: "application/octet-stream",
|
||||
Format: "<binary chunk>",
|
||||
},
|
||||
Successes: []ResponseDescriptor{
|
||||
{
|
||||
StatusCode: http.StatusNoContent,
|
||||
Headers: []ParameterDescriptor{
|
||||
{
|
||||
Name: "Range",
|
||||
Type: "header",
|
||||
Format: "0-<offset>",
|
||||
Description: "Range indicating the current progress of the upload.",
|
||||
},
|
||||
contentLengthZeroHeader,
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
{
|
||||
Method: "PUT",
|
||||
Description: "Complete the upload specified by `uuid`, optionally appending the body as the final chunk.",
|
||||
Requests: []RequestDescriptor{
|
||||
{
|
||||
// TODO(stevvooe): Break this down into three separate requests:
|
||||
// 1. Complete an upload where all data has already been sent.
|
||||
// 2. Complete an upload where the entire body is in the PUT.
|
||||
// 3. Complete an upload where the final, partial chunk is the body.
|
||||
|
||||
Description: "Upload the _final_ chunk of data.",
|
||||
PathParameters: []ParameterDescriptor{
|
||||
nameParameterDescriptor,
|
||||
uuidParameterDescriptor,
|
||||
},
|
||||
QueryParameters: []ParameterDescriptor{
|
||||
{
|
||||
Name: "digest",
|
||||
Type: "string",
|
||||
Format: "<tarsum>",
|
||||
Regexp: digest.DigestRegexp,
|
||||
Required: true,
|
||||
Description: `Digest of uploaded blob.`,
|
||||
},
|
||||
},
|
||||
Successes: []ResponseDescriptor{
|
||||
{
|
||||
StatusCode: http.StatusNoContent,
|
||||
Headers: []ParameterDescriptor{
|
||||
{
|
||||
Name: "Content-Range",
|
||||
Type: "header",
|
||||
Format: "<start of range>-<end of range, inclusive>",
|
||||
Description: "Range of bytes identifying the desired block of content represented by the body. Start must match the end of offset retrieved via status check. Note that this is a non-standard use of the `Content-Range` header.",
|
||||
},
|
||||
{
|
||||
Name: "Content-Length",
|
||||
Type: "integer",
|
||||
Format: "<length of chunk>",
|
||||
Description: "Length of the chunk being uploaded, corresponding the length of the request body.",
|
||||
},
|
||||
},
|
||||
Body: BodyDescriptor{
|
||||
ContentType: "application/octet-stream",
|
||||
Format: "<binary chunk>",
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
{
|
||||
Method: "DELETE",
|
||||
Description: "Cancel outstanding upload processes, releasing associated resources. If this is not called, the unfinished uploads will eventually timeout.",
|
||||
Requests: []RequestDescriptor{
|
||||
{
|
||||
Description: "Cancel the upload specified by `uuid`.",
|
||||
PathParameters: []ParameterDescriptor{
|
||||
nameParameterDescriptor,
|
||||
uuidParameterDescriptor,
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
}
|
||||
|
||||
// ErrorDescriptors provides a list of HTTP API Error codes that may be
|
||||
// encountered when interacting with the registry API.
|
||||
var ErrorDescriptors = []ErrorDescriptor{
|
||||
var errorDescriptors = []ErrorDescriptor{
|
||||
{
|
||||
Code: ErrorCodeUnknown,
|
||||
Value: "UNKNOWN",
|
||||
|
|
@ -142,10 +983,10 @@ var errorCodeToDescriptors map[ErrorCode]ErrorDescriptor
|
|||
var idToDescriptors map[string]ErrorDescriptor
|
||||
|
||||
func init() {
|
||||
errorCodeToDescriptors = make(map[ErrorCode]ErrorDescriptor, len(ErrorDescriptors))
|
||||
idToDescriptors = make(map[string]ErrorDescriptor, len(ErrorDescriptors))
|
||||
errorCodeToDescriptors = make(map[ErrorCode]ErrorDescriptor, len(errorDescriptors))
|
||||
idToDescriptors = make(map[string]ErrorDescriptor, len(errorDescriptors))
|
||||
|
||||
for _, descriptor := range ErrorDescriptors {
|
||||
for _, descriptor := range errorDescriptors {
|
||||
errorCodeToDescriptors[descriptor.Code] = descriptor
|
||||
idToDescriptors[descriptor.Value] = descriptor
|
||||
}
|
||||
|
|
|
|||
|
|
@ -11,7 +11,7 @@ import (
|
|||
// TestErrorCodes ensures that error code format, mappings and
|
||||
// marshaling/unmarshaling. round trips are stable.
|
||||
func TestErrorCodes(t *testing.T) {
|
||||
for _, desc := range ErrorDescriptors {
|
||||
for _, desc := range errorDescriptors {
|
||||
if desc.Code.String() != desc.Value {
|
||||
t.Fatalf("error code string incorrect: %q != %q", desc.Code.String(), desc.Value)
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,9 +1,6 @@
|
|||
package v2
|
||||
|
||||
import (
|
||||
"github.com/docker/docker-registry/common"
|
||||
"github.com/gorilla/mux"
|
||||
)
|
||||
import "github.com/gorilla/mux"
|
||||
|
||||
// The following are definitions of the name under which all V2 routes are
|
||||
// registered. These symbols can be used to look up a route based on the name.
|
||||
|
|
@ -31,39 +28,9 @@ func Router() *mux.Router {
|
|||
router := mux.NewRouter().
|
||||
StrictSlash(true)
|
||||
|
||||
// GET /v2/ Check Check that the registry implements API version 2(.1)
|
||||
router.
|
||||
Path("/v2/").
|
||||
Name(RouteNameBase)
|
||||
|
||||
// GET /v2/<name>/manifest/<tag> Image Manifest Fetch the image manifest identified by name and tag.
|
||||
// PUT /v2/<name>/manifest/<tag> Image Manifest Upload the image manifest identified by name and tag.
|
||||
// DELETE /v2/<name>/manifest/<tag> Image Manifest Delete the image identified by name and tag.
|
||||
router.
|
||||
Path("/v2/{name:" + common.RepositoryNameRegexp.String() + "}/manifests/{tag:" + common.TagNameRegexp.String() + "}").
|
||||
Name(RouteNameManifest)
|
||||
|
||||
// GET /v2/<name>/tags/list Tags Fetch the tags under the repository identified by name.
|
||||
router.
|
||||
Path("/v2/{name:" + common.RepositoryNameRegexp.String() + "}/tags/list").
|
||||
Name(RouteNameTags)
|
||||
|
||||
// GET /v2/<name>/blob/<digest> Layer Fetch the blob identified by digest.
|
||||
router.
|
||||
Path("/v2/{name:" + common.RepositoryNameRegexp.String() + "}/blobs/{digest:[a-zA-Z0-9-_+.]+:[a-zA-Z0-9-_+.=]+}").
|
||||
Name(RouteNameBlob)
|
||||
|
||||
// POST /v2/<name>/blob/upload/ Layer Upload Initiate an upload of the layer identified by tarsum.
|
||||
router.
|
||||
Path("/v2/{name:" + common.RepositoryNameRegexp.String() + "}/blobs/uploads/").
|
||||
Name(RouteNameBlobUpload)
|
||||
|
||||
// GET /v2/<name>/blob/upload/<uuid> Layer Upload Get the status of the upload identified by tarsum and uuid.
|
||||
// PUT /v2/<name>/blob/upload/<uuid> Layer Upload Upload all or a chunk of the upload identified by tarsum and uuid.
|
||||
// DELETE /v2/<name>/blob/upload/<uuid> Layer Upload Cancel the upload identified by layer and uuid
|
||||
router.
|
||||
Path("/v2/{name:" + common.RepositoryNameRegexp.String() + "}/blobs/uploads/{uuid}").
|
||||
Name(RouteNameBlobUploadChunk)
|
||||
for _, descriptor := range routeDescriptors {
|
||||
router.Path(descriptor.Path).Name(descriptor.Name)
|
||||
}
|
||||
|
||||
return router
|
||||
}
|
||||
|
|
|
|||
|
|
@ -140,7 +140,13 @@ func TestRouter(t *testing.T) {
|
|||
},
|
||||
} {
|
||||
// Register the endpoint
|
||||
router.GetRoute(testcase.RouteName).Handler(testHandler)
|
||||
route := router.GetRoute(testcase.RouteName)
|
||||
if route == nil {
|
||||
t.Fatalf("route for name %q not found", testcase.RouteName)
|
||||
}
|
||||
|
||||
route.Handler(testHandler)
|
||||
|
||||
u := server.URL + testcase.RequestURI
|
||||
|
||||
resp, err := http.Get(u)
|
||||
|
|
|
|||
118
cmd/registry-api-descriptor-template/main.go
Normal file
118
cmd/registry-api-descriptor-template/main.go
Normal file
|
|
@ -0,0 +1,118 @@
|
|||
// registry-api-descriptor-template uses the APIDescriptor defined in the
|
||||
// api/v2 package to execute templates passed to the command line.
|
||||
//
|
||||
// For example, to generate a new API specification, one would execute the
|
||||
// following command from the repo root:
|
||||
//
|
||||
// $ registry-api-descriptor-template doc/SPEC.md.tmpl > doc/SPEC.md
|
||||
//
|
||||
// The templates are passed in the api/v2.APIDescriptor object. Please see the
|
||||
// package documentation for fields available on that object. The template
|
||||
// syntax is from Go's standard library text/template package. For information
|
||||
// on Go's template syntax, please see golang.org/pkg/text/template.
|
||||
package main
|
||||
|
||||
import (
|
||||
"log"
|
||||
"net/http"
|
||||
"os"
|
||||
"path/filepath"
|
||||
"regexp"
|
||||
"text/template"
|
||||
|
||||
"github.com/docker/docker-registry/api/v2"
|
||||
)
|
||||
|
||||
var spaceRegex = regexp.MustCompile(`\n\s*`)
|
||||
|
||||
func main() {
|
||||
|
||||
if len(os.Args) != 2 {
|
||||
log.Fatalln("please specify a template to execute.")
|
||||
}
|
||||
|
||||
path := os.Args[1]
|
||||
filename := filepath.Base(path)
|
||||
|
||||
funcMap := template.FuncMap{
|
||||
"removenewlines": func(s string) string {
|
||||
return spaceRegex.ReplaceAllString(s, " ")
|
||||
},
|
||||
"statustext": http.StatusText,
|
||||
"prettygorilla": prettyGorillaMuxPath,
|
||||
}
|
||||
|
||||
tmpl := template.Must(template.New(filename).Funcs(funcMap).ParseFiles(path))
|
||||
|
||||
if err := tmpl.Execute(os.Stdout, v2.APIDescriptor); err != nil {
|
||||
log.Fatalln(err)
|
||||
}
|
||||
}
|
||||
|
||||
// prettyGorillaMuxPath removes the regular expressions from a gorilla/mux
|
||||
// route string, making it suitable for documentation.
|
||||
func prettyGorillaMuxPath(s string) string {
|
||||
// Stateful parser that removes regular expressions from gorilla
|
||||
// routes. It correctly handles balanced bracket pairs.
|
||||
|
||||
var output string
|
||||
var label string
|
||||
var level int
|
||||
|
||||
start:
|
||||
if s[0] == '{' {
|
||||
s = s[1:]
|
||||
level++
|
||||
goto capture
|
||||
}
|
||||
|
||||
output += string(s[0])
|
||||
s = s[1:]
|
||||
|
||||
goto end
|
||||
capture:
|
||||
switch s[0] {
|
||||
case '{':
|
||||
level++
|
||||
case '}':
|
||||
level--
|
||||
|
||||
if level == 0 {
|
||||
s = s[1:]
|
||||
goto label
|
||||
}
|
||||
case ':':
|
||||
s = s[1:]
|
||||
goto skip
|
||||
default:
|
||||
label += string(s[0])
|
||||
}
|
||||
s = s[1:]
|
||||
goto capture
|
||||
skip:
|
||||
switch s[0] {
|
||||
case '{':
|
||||
level++
|
||||
case '}':
|
||||
level--
|
||||
}
|
||||
s = s[1:]
|
||||
|
||||
if level == 0 {
|
||||
goto label
|
||||
}
|
||||
|
||||
goto skip
|
||||
label:
|
||||
if label != "" {
|
||||
output += "<" + label + ">"
|
||||
label = ""
|
||||
}
|
||||
end:
|
||||
if s != "" {
|
||||
goto start
|
||||
}
|
||||
|
||||
return output
|
||||
|
||||
}
|
||||
|
|
@ -1,95 +0,0 @@
|
|||
// registry-api-doctable-gen uses various descriptors within the registry code
|
||||
// base to generate markdown tables for use in documentation. This is only
|
||||
// meant to facilitate updates to documentation and not as an automated tool.
|
||||
//
|
||||
// For now, this only includes support for error codes:
|
||||
//
|
||||
// $ registry-api-doctable-gen errors
|
||||
//
|
||||
package main
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"io"
|
||||
"log"
|
||||
"os"
|
||||
"reflect"
|
||||
"strings"
|
||||
"text/tabwriter"
|
||||
|
||||
"github.com/docker/docker-registry/api/v2"
|
||||
)
|
||||
|
||||
func main() {
|
||||
|
||||
if len(os.Args) < 2 {
|
||||
log.Fatalln("please specify a table to generate: (errors)")
|
||||
}
|
||||
|
||||
switch os.Args[1] {
|
||||
case "errors":
|
||||
dumpErrors(os.Stdout)
|
||||
default:
|
||||
log.Fatalln("unknown descriptor table:", os.Args[1])
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
func dumpErrors(wr io.Writer) {
|
||||
writer := tabwriter.NewWriter(os.Stdout, 8, 8, 0, '\t', 0)
|
||||
defer writer.Flush()
|
||||
|
||||
fmt.Fprint(writer, "|")
|
||||
dtype := reflect.TypeOf(v2.ErrorDescriptor{})
|
||||
var fieldsPrinted int
|
||||
for i := 0; i < dtype.NumField(); i++ {
|
||||
field := dtype.Field(i)
|
||||
if field.Name == "Value" {
|
||||
continue
|
||||
}
|
||||
|
||||
fmt.Fprint(writer, field.Name, "|")
|
||||
fieldsPrinted++
|
||||
}
|
||||
|
||||
divider := strings.Repeat("-", 8)
|
||||
var parts []string
|
||||
for i := 0; i < fieldsPrinted; i++ {
|
||||
parts = append(parts, divider)
|
||||
}
|
||||
divider = strings.Join(parts, "|")
|
||||
|
||||
fmt.Fprintln(writer, "\n"+divider)
|
||||
|
||||
for _, descriptor := range v2.ErrorDescriptors {
|
||||
fmt.Fprint(writer, "|")
|
||||
|
||||
v := reflect.ValueOf(descriptor)
|
||||
for i := 0; i < dtype.NumField(); i++ {
|
||||
value := v.Field(i).Interface()
|
||||
field := v.Type().Field(i)
|
||||
if field.Name == "Value" {
|
||||
continue
|
||||
} else if field.Name == "Description" {
|
||||
value = strings.Replace(value.(string), "\n", " ", -1)
|
||||
} else if field.Name == "Code" {
|
||||
value = fmt.Sprintf("`%s`", value)
|
||||
} else if field.Name == "HTTPStatusCodes" {
|
||||
if len(value.([]int)) > 0 {
|
||||
var codes []string
|
||||
for _, code := range value.([]int) {
|
||||
codes = append(codes, fmt.Sprint(code))
|
||||
}
|
||||
value = strings.Join(codes, ", ")
|
||||
} else {
|
||||
value = "Any"
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
fmt.Fprint(writer, value, "|")
|
||||
}
|
||||
|
||||
fmt.Fprint(writer, "\n")
|
||||
}
|
||||
}
|
||||
|
|
@ -7,6 +7,7 @@ import (
|
|||
"hash"
|
||||
"io"
|
||||
"io/ioutil"
|
||||
"regexp"
|
||||
"strings"
|
||||
|
||||
"github.com/docker/docker-registry/common"
|
||||
|
|
@ -36,6 +37,9 @@ func NewDigest(alg string, h hash.Hash) Digest {
|
|||
return Digest(fmt.Sprintf("%s:%x", alg, h.Sum(nil)))
|
||||
}
|
||||
|
||||
// DigestRegexp matches valid digest types.
|
||||
var DigestRegexp = regexp.MustCompile(`[a-zA-Z0-9-_+.]+:[a-zA-Z0-9-_+.=]+`)
|
||||
|
||||
var (
|
||||
// ErrDigestInvalidFormat returned when digest format invalid.
|
||||
ErrDigestInvalidFormat = fmt.Errorf("invalid checksum digest format")
|
||||
|
|
@ -125,6 +129,8 @@ func (d Digest) Validate() error {
|
|||
return ErrDigestUnsupported
|
||||
}
|
||||
|
||||
// TODO(stevvooe): Use DigestRegexp to validate digest here.
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
|
|
|
|||
1630
doc/SPEC.md
Normal file
1630
doc/SPEC.md
Normal file
File diff suppressed because it is too large
Load diff
733
doc/SPEC.md.tmpl
Normal file
733
doc/SPEC.md.tmpl
Normal file
|
|
@ -0,0 +1,733 @@
|
|||
# Docker Registry API V2.1
|
||||
|
||||
> **Note**: This specification has been ported over from the proposal on
|
||||
> docker/docker#9015. Much of the language in this document is still written
|
||||
> in the proposal tense and needs to be converted.
|
||||
|
||||
## Abstract
|
||||
|
||||
> **TODO**: Merge this section into the overview/introduction.
|
||||
|
||||
The docker registry is a service to manage information about docker images and
|
||||
enable their distribution. While the current registry is usable, there are
|
||||
several problems with the architecture that have led to this proposal. For
|
||||
relevant details, please see the following issues:
|
||||
|
||||
- docker/docker#8093
|
||||
- docker/docker-registry#612
|
||||
|
||||
The main driver of this proposal are changes to the docker the image format,
|
||||
covered in docker/docker#8093. The new, self-contained image manifest
|
||||
simplifies the image definition and the underlying backend layout. To reduce
|
||||
bandwidth usage, the new registry will be architected to avoid uploading
|
||||
existing layers and will support resumable layer uploads.
|
||||
|
||||
While out of scope for this specification, the URI layout of the new API will
|
||||
be structured to support a rich Authentication and Authorization model by
|
||||
leveraging namespaces.
|
||||
|
||||
Furthermore, to bring docker registry in line with docker core, the registry is written in Go.
|
||||
|
||||
## Scope
|
||||
|
||||
> **TODO**: Merge this section into the overview/introduction.
|
||||
|
||||
This proposal covers the URL layout and protocols of the Docker Registry V2
|
||||
JSON API. This will affect the docker core registry API and the rewrite of
|
||||
docker-registry.
|
||||
|
||||
This includes the following features:
|
||||
|
||||
- Namespace-oriented URI Layout
|
||||
- PUSH/PULL registry server for V2 image manifest format
|
||||
- Resumable layer PUSH support
|
||||
- V2 Client library implementation
|
||||
|
||||
While authentication and authorization support will influence this
|
||||
specification, details of the protocol will be left to a future specification.
|
||||
Other features marked as next generation will be incorporated when the initial
|
||||
support is complete. Please see the road map for details.
|
||||
|
||||
## Use Cases
|
||||
|
||||
> **TODO**: Merge this section into the overview/introduction.
|
||||
|
||||
For the most part, the use cases of the former registry API apply to the new
|
||||
version. Differentiating uses cases are covered below.
|
||||
|
||||
### Resumable Push
|
||||
|
||||
Company X's build servers lose connectivity to docker registry before
|
||||
completing an image layer transfer. After connectivity returns, the build
|
||||
server attempts to re-upload the image. The registry notifies the build server
|
||||
that the upload has already been partially attempted. The build server
|
||||
responds by only sending the remaining data to complete the image file.
|
||||
|
||||
### Resumable Pull
|
||||
|
||||
Company X is having more connectivity problems but this time in their
|
||||
deployment datacenter. When downloading an image, the connection is
|
||||
interrupted before completion. The client keeps the partial data and uses http
|
||||
`Range` requests to avoid downloading repeated data.
|
||||
|
||||
### Layer Upload De-duplication
|
||||
|
||||
Company Y's build system creates two identical docker layers from build
|
||||
processes A and B. Build process A completes uploading the layer before B.
|
||||
When process B attempts to upload the layer, the registry indicates that its
|
||||
not necessary because the layer is already known.
|
||||
|
||||
If process A and B upload the same layer at the same time, both operations
|
||||
will proceed and the first to complete will be stored in the registry (Note:
|
||||
we may modify this to prevent dogpile with some locking mechanism).
|
||||
|
||||
## Overview
|
||||
|
||||
This section covers client flows and details of the API endpoints. All
|
||||
endpoints will be prefixed by the API version and the repository name:
|
||||
|
||||
/v2/<name>/
|
||||
|
||||
For example, an API endpoint that will work with the `library/ubuntu`
|
||||
repository, the URI prefix will be:
|
||||
|
||||
/v2/library/ubuntu/
|
||||
|
||||
This scheme provides rich access control over various operations and methods
|
||||
using the URI prefix and http methods that can be controlled in variety of
|
||||
ways.
|
||||
|
||||
Classically, repository names have always been two path components where each
|
||||
path component is less than 30 characters. The V2 registry API does not
|
||||
enforce this. The rules for a repository name are as follows:
|
||||
|
||||
1. A repository name is broken up into _path components_. A component of a
|
||||
repository name must be at least two characters, optionally separated by
|
||||
periods, dashes or underscores. More strictly, it must match the regular
|
||||
expression `[a-z0-9]+(?:[._-][a-z0-9]+)*` and the matched result must be 2
|
||||
or more characters in length.
|
||||
2. The name of a repository must have at least two path components, separated
|
||||
by a forward slash.
|
||||
3. The total length of a repository name, including slashes, must be less the
|
||||
256 characters.
|
||||
|
||||
These name requirements _only_ apply to the registry API and should accept a
|
||||
superset of what is supported by other docker ecosystem components.
|
||||
|
||||
All endpoints should support aggressive http caching, compression and range
|
||||
headers, where appropriate. The new API attempts to leverage HTTP semantics
|
||||
where possible but may break from standards to implement targeted features.
|
||||
|
||||
For detail on individual endpoints, please see the _Detail_ section.
|
||||
|
||||
### Errors
|
||||
|
||||
Actionable failure conditions, covered in detail in their relevant sections,
|
||||
are reported as part of 4xx responses, in a json response body. One or more
|
||||
errors will be returned in the following format:
|
||||
|
||||
{
|
||||
"errors:" [{
|
||||
"code": <error identifier>,
|
||||
"message": <message describing condition>,
|
||||
"detail": <unstructured>
|
||||
},
|
||||
...
|
||||
]
|
||||
}
|
||||
|
||||
The `code` field will be a unique identifier, all caps with underscores by
|
||||
convention. The `message` field will be a human readable string. The optional
|
||||
`detail` field may contain arbitrary json data providing information the
|
||||
client can use to resolve the issue.
|
||||
|
||||
While the client can take action on certain error codes, the registry may add
|
||||
new error codes over time. All client implementations should treat unknown
|
||||
error codes as `UNKNOWN`, allowing future error codes to be added without
|
||||
breaking API compatibility. For the purposes of the specification error codes
|
||||
will only be added and never removed.
|
||||
|
||||
For a complete account of all error codes, please see the _Detail_ section.
|
||||
|
||||
### API Version Check
|
||||
|
||||
A minimal endpoint, mounted at `/v2/` will provide version support information
|
||||
based on its response statuses. The request format is as follows:
|
||||
|
||||
GET /v2/
|
||||
|
||||
If a `200 OK` response is returned, the registry implements the V2(.1)
|
||||
registry API and the client may proceed safely with other V2 operations.
|
||||
Optionally, the response may contain information about the supported paths in
|
||||
the response body. The client should be prepared to ignore this data.
|
||||
|
||||
If a `401 Unauthorized` response is returned, the client should take action
|
||||
based on the contents of the "WWW-Authenticate" header and try the endpoint
|
||||
again. Depending on access control setup, the client may still have to
|
||||
authenticate against different resources, even if this check succeeds.
|
||||
|
||||
If `404 Not Found` response status, or other unexpected status, is returned,
|
||||
the client should proceed with the assumption that the registry does not
|
||||
implement V2 of the API.
|
||||
|
||||
### Pulling An Image
|
||||
|
||||
An "image" is a combination of a JSON manifest and individual layer files. The
|
||||
process of pulling an image centers around retrieving these two components.
|
||||
|
||||
The first step in pulling an image is to retrieve the manifest. For reference,
|
||||
the relevant manifest fields for the registry are the following:
|
||||
|
||||
field | description |
|
||||
----------|------------------------------------------------|
|
||||
name | The name of the image. |
|
||||
tag | The tag for this version of the image. |
|
||||
fsLayers | A list of layer descriptors (including tarsum) |
|
||||
signature | A JWS used to verify the manifest content |
|
||||
|
||||
For more information about the manifest format, please see
|
||||
[docker/docker#8093](https://github.com/docker/docker/issues/8093).
|
||||
|
||||
When the manifest is in hand, the client must verify the signature to ensure
|
||||
the names and layers are valid. Once confirmed, the client will then use the
|
||||
tarsums to download the individual layers. Layers are stored in as blobs in
|
||||
the V2 registry API, keyed by their tarsum digest.
|
||||
|
||||
#### Pulling an Image Manifest
|
||||
|
||||
The image manifest can be fetched with the following url:
|
||||
|
||||
```
|
||||
GET /v2/<name>/manifests/<tag>
|
||||
```
|
||||
|
||||
The "name" and "tag" parameter identify the image and are required.
|
||||
|
||||
A `404 Not Found` response will be returned if the image is unknown to the
|
||||
registry. If the image exists and the response is successful, the image
|
||||
manifest will be returned, with the following format (see docker/docker#8093
|
||||
for details):
|
||||
|
||||
{
|
||||
"name": <name>,
|
||||
"tag": <tag>,
|
||||
"fsLayers": [
|
||||
{
|
||||
"blobSum": <tarsum>
|
||||
},
|
||||
...
|
||||
]
|
||||
],
|
||||
"history": <v1 images>,
|
||||
"signature": <JWS>
|
||||
}
|
||||
|
||||
The client should verify the returned manifest signature for authenticity
|
||||
before fetching layers.
|
||||
|
||||
#### Pulling a Layer
|
||||
|
||||
Layers are stored in the blob portion of the registry, keyed by tarsum digest.
|
||||
Pulling a layer is carried out by a standard http request. The URL is as
|
||||
follows:
|
||||
|
||||
GET /v2/<name>/blobs/<tarsum>
|
||||
|
||||
Access to a layer will be gated by the `name` of the repository but is
|
||||
identified uniquely in the registry by `tarsum`. The `tarsum` parameter is an
|
||||
opaque field, to be interpreted by the tarsum library.
|
||||
|
||||
This endpoint may issue a 307 (302 for <HTTP 1.1) redirect to another service
|
||||
for downloading the layer and clients should be prepared to handle redirects.
|
||||
|
||||
This endpoint should support aggressive HTTP caching for image layers. Support
|
||||
for Etags, modification dates and other cache control headers should be
|
||||
included. To allow for incremental downloads, `Range` requests should be
|
||||
supported, as well.
|
||||
|
||||
### Pushing An Image
|
||||
|
||||
Pushing an image works in the opposite order as a pull. After assembling the
|
||||
image manifest, the client must first push the individual layers. When the
|
||||
layers are fully pushed into the registry, the client should upload the signed
|
||||
manifest.
|
||||
|
||||
The details of each step of the process are covered in the following sections.
|
||||
|
||||
#### Pushing a Layer
|
||||
|
||||
All layer uploads use two steps to manage the upload process. The first step
|
||||
starts the upload in the registry service, returning a url to carry out the
|
||||
second step. The second step uses the upload url to transfer the actual data.
|
||||
Uploads are started with a POST request which returns a url that can be used
|
||||
to push data and check upload status.
|
||||
|
||||
The `Location` header will be used to communicate the upload location after
|
||||
each request. While it won't change in the this specification, clients should
|
||||
use the most recent value returned by the API.
|
||||
|
||||
##### Starting An Upload
|
||||
|
||||
To begin the process, a POST request should be issued in the following format:
|
||||
|
||||
```
|
||||
POST /v2/<name>/blobs/uploads/
|
||||
```
|
||||
|
||||
The parameters of this request are the image namespace under which the layer
|
||||
will be linked. Responses to this request are covered below.
|
||||
|
||||
##### Existing Layers
|
||||
|
||||
The existence of a layer can be checked via a `HEAD` request to the blob store
|
||||
API. The request should be formatted as follows:
|
||||
|
||||
```
|
||||
HEAD /v2/<name>/blobs/<digest>
|
||||
```
|
||||
|
||||
If the layer with the tarsum specified in `digest` is available, a 200 OK
|
||||
response will be received, with no actual body content (this is according to
|
||||
http specification). The response will look as follows:
|
||||
|
||||
```
|
||||
200 OK
|
||||
Content-Length: <length of blob>
|
||||
```
|
||||
|
||||
When this response is received, the client can assume that the layer is
|
||||
already available in the registry under the given name and should take no
|
||||
further action to upload the layer. Note that the binary digests may differ
|
||||
for the existing registry layer, but the tarsums will be guaranteed to match.
|
||||
|
||||
##### Uploading the Layer
|
||||
|
||||
If the POST request is successful, a `202 Accepted` response will be returned
|
||||
with the upload URL in the `Location` header:
|
||||
|
||||
```
|
||||
202 Accepted
|
||||
Location: /v2/<name>/blobs/uploads/<uuid>
|
||||
Range: bytes=0-<offset>
|
||||
Content-Length: 0
|
||||
```
|
||||
|
||||
The rest of the upload process can be carried out with the returned url,
|
||||
called the "Upload URL" from the `Location` header. All responses to the
|
||||
upload url, whether sending data or getting status, will be in this format.
|
||||
Though the URI format (`/v2/<name>/blobs/uploads/<uuid>`) for the `Location`
|
||||
header is specified, clients should treat it as an opaque url and should never
|
||||
try to assemble the it. While the `uuid` parameter may be an actual UUID, this
|
||||
proposal imposes no constraints on the format and clients should never impose
|
||||
any.
|
||||
|
||||
##### Upload Progress
|
||||
|
||||
The progress and chunk coordination of the upload process will be coordinated
|
||||
through the `Range` header. While this is a non-standard use of the `Range`
|
||||
header, there are examples of [similar approaches](https://developers.google.c
|
||||
om/youtube/v3/guides/using_resumable_upload_protocol) in APIs with heavy use.
|
||||
For an upload that just started, for an example with a 1000 byte layer file,
|
||||
the `Range` header would be as follows:
|
||||
|
||||
```
|
||||
Range: bytes=0-0
|
||||
```
|
||||
|
||||
To get the status of an upload, issue a GET request to the upload URL:
|
||||
|
||||
```
|
||||
GET /v2/<name>/blobs/uploads/<uuid>
|
||||
Host: <registry host>
|
||||
```
|
||||
|
||||
The response will be similar to the above, except will return 204 status:
|
||||
|
||||
```
|
||||
204 No Content
|
||||
Location: /v2/<name>/blobs/uploads/<uuid>
|
||||
Range: bytes=0-<offset>
|
||||
```
|
||||
|
||||
Note that the HTTP `Range` header byte ranges are inclusive and that will be
|
||||
honored, even in non-standard use cases.
|
||||
|
||||
##### Monolithic Upload
|
||||
|
||||
A monolithic upload is simply a chunked upload with a single chunk and may be
|
||||
favored by clients that would like to avoided the complexity of chunking. To
|
||||
carry out a "monolithic" upload, one can simply put the entire content blob to
|
||||
the provided URL:
|
||||
|
||||
```
|
||||
PUT /v2/<name>/blobs/uploads/<uuid>?digest=<tarsum>[&digest=sha256:<hex digest>]
|
||||
Content-Length: <size of layer>
|
||||
Content-Type: application/octet-stream
|
||||
|
||||
<Layer Binary Data>
|
||||
```
|
||||
|
||||
The "digest" parameter must be included with the PUT request. Please see the
|
||||
_Completed Upload_ section for details on the parameters and expected
|
||||
responses.
|
||||
|
||||
Additionally, the download can be completed with a single `POST` request to
|
||||
the uploads endpoint, including the "size" and "digest" parameters:
|
||||
|
||||
```
|
||||
POST /v2/<name>/blobs/uploads/?digest=<tarsum>[&digest=sha256:<hex digest>]
|
||||
Content-Length: <size of layer>
|
||||
Content-Type: application/octet-stream
|
||||
|
||||
<Layer Binary Data>
|
||||
```
|
||||
|
||||
On the registry service, this should allocate a download, accept and verify
|
||||
the data and return the same response as the final chunk of an upload. If the
|
||||
POST request fails collecting the data in any way, the registry should attempt
|
||||
to return an error response to the client with the `Location` header providing
|
||||
a place to continue the download.
|
||||
|
||||
The single `POST` method is provided for convenience and most clients should
|
||||
implement `POST` + `PUT` to support reliable resume of uploads.
|
||||
|
||||
##### Chunked Upload
|
||||
|
||||
To carry out an upload of a chunk, the client can specify a range header and
|
||||
only include that part of the layer file:
|
||||
|
||||
```
|
||||
PATCH /v2/<name>/blobs/uploads/<uuid>
|
||||
Content-Length: <size of chunk>
|
||||
Content-Range: <start of range>-<end of range>
|
||||
Content-Type: application/octet-stream
|
||||
|
||||
<Layer Chunk Binary Data>
|
||||
```
|
||||
|
||||
There is no enforcement on layer chunk splits other than that the server must
|
||||
receive them in order. The server may enforce a minimum chunk size. If the
|
||||
server cannot accept the chunk, a `416 Requested Range Not Satisfiable`
|
||||
response will be returned and will include a `Range` header indicating the
|
||||
current status:
|
||||
|
||||
```
|
||||
416 Requested Range Not Satisfiable
|
||||
Location: /v2/<name>/blobs/uploads/<uuid>
|
||||
Range: 0-<last valid range>
|
||||
Content-Length: 0
|
||||
```
|
||||
|
||||
If this response is received, the client should resume from the "last valid
|
||||
range" and upload the subsequent chunk. A 416 will be returned under the
|
||||
following conditions:
|
||||
|
||||
- Invalid Content-Range header format
|
||||
- Out of order chunk: the range of the next chunk must start immediately after
|
||||
the "last valid range" from the previous response.
|
||||
|
||||
When a chunk is accepted as part of the upload, a `202 Accepted` response will
|
||||
be returned, including a `Range` header with the current upload status:
|
||||
|
||||
```
|
||||
202 Accepted
|
||||
Location: /v2/<name>/blobs/uploads/<uuid>
|
||||
Range: bytes=0-<offset>
|
||||
Content-Length: 0
|
||||
```
|
||||
|
||||
##### Completed Upload
|
||||
|
||||
For an upload to be considered complete, the client must submit a `PUT`
|
||||
request on the upload endpoint with a digest parameter. If it is not provided,
|
||||
the download will not be considered complete. The format for the final chunk
|
||||
will be as follows:
|
||||
|
||||
```
|
||||
PUT /v2/<name>/blob/uploads/<uuid>?digest=<tarsum>[&digest=sha256:<hex digest>]
|
||||
Content-Length: <size of chunk>
|
||||
Content-Range: <start of range>-<end of range>
|
||||
Content-Type: application/octet-stream
|
||||
|
||||
<Last Layer Chunk Binary Data>
|
||||
```
|
||||
|
||||
Optionally, if all chunks have already been uploaded, a `PUT` request with a
|
||||
`digest` parameter and zero-length body may be sent to complete and validated
|
||||
the upload. Multiple "digest" parameters may be provided with different
|
||||
digests. The server may verify none or all of them but _must_ notify the
|
||||
client if the content is rejected.
|
||||
|
||||
When the last chunk is received and the layer has been validated, the client
|
||||
will receive a `201 Created` response:
|
||||
|
||||
```
|
||||
201 Created
|
||||
Location: /v2/<name>/blobs/<tarsum>
|
||||
Content-Length: 0
|
||||
```
|
||||
|
||||
The `Location` header will contain the registry URL to access the accepted
|
||||
layer file.
|
||||
|
||||
###### Digest Parameter
|
||||
|
||||
The "digest" parameter is designed as an opaque parameter to support
|
||||
verification of a successful transfer. The initial version of the registry API
|
||||
will support a tarsum digest, in the standard tarsum format. For example, a
|
||||
HTTP URI parameter might be as follows:
|
||||
|
||||
```
|
||||
tarsum.v1+sha256:6c3c624b58dbbcd3c0dd82b4c53f04194d1247c6eebdaab7c610cf7d66709b3b
|
||||
```
|
||||
|
||||
Given this parameter, the registry will verify that the provided content does
|
||||
result in this tarsum. Optionally, the registry can support other other digest
|
||||
parameters for non-tarfile content stored as a layer. A regular hash digest
|
||||
might be specified as follows:
|
||||
|
||||
```
|
||||
sha256:6c3c624b58dbbcd3c0dd82b4c53f04194d1247c6eebdaab7c610cf7d66709b3b
|
||||
```
|
||||
|
||||
Such a parameter would be used to verify that the binary content (as opposed
|
||||
to the tar content) would be verified at the end of the upload process.
|
||||
|
||||
For the initial version, registry servers are only required to support the
|
||||
tarsum format.
|
||||
|
||||
##### Canceling an Upload
|
||||
|
||||
An upload can be cancelled by issuing a DELETE request to the upload endpoint.
|
||||
The format will be as follows:
|
||||
|
||||
```
|
||||
DELETE /v2/<name>/blobs/uploads/<uuid>
|
||||
```
|
||||
|
||||
After this request is issued, the upload uuid will no longer be valid and the
|
||||
registry server will dump all intermediate data. While uploads will time out
|
||||
if not completed, clients should issue this request if they encounter a fatal
|
||||
error but still have the ability to issue an http request.
|
||||
|
||||
##### Errors
|
||||
|
||||
If an 502, 503 or 504 error is received, the client should assume that the
|
||||
download can proceed due to a temporary condition, honoring the appropriate
|
||||
retry mechanism. Other 5xx errors should be treated as terminal.
|
||||
|
||||
If there is a problem with the upload, a 4xx error will be returned indicating
|
||||
the problem. After receiving a 4xx response (except 416, as called out above),
|
||||
the upload will be considered failed and the client should take appropriate
|
||||
action.
|
||||
|
||||
Note that the upload url will not be available forever. If the upload uuid is
|
||||
unknown to the registry, a `404 Not Found` response will be returned and the
|
||||
client must restart the upload process.
|
||||
|
||||
#### Pushing an Image Manifest
|
||||
|
||||
Once all of the layers for an image are uploaded, the client can upload the
|
||||
image manifest. An image can be pushed using the following request format:
|
||||
|
||||
PUT /v2/<name>/manifests/<tag>
|
||||
|
||||
{
|
||||
"name": <name>,
|
||||
"tag": <tag>,
|
||||
"fsLayers": [
|
||||
{
|
||||
"blobSum": <tarsum>
|
||||
},
|
||||
...
|
||||
]
|
||||
],
|
||||
"history": <v1 images>,
|
||||
"signature": <JWS>,
|
||||
...
|
||||
}
|
||||
|
||||
The `name` and `tag` fields of the response body must match those specified in
|
||||
the URL.
|
||||
|
||||
If there is a problem with pushing the manifest, a relevant 4xx response will
|
||||
be returned with a JSON error message. Please see the _PUT Manifest section
|
||||
for details on possible error codes that may be returned.
|
||||
|
||||
If one or more layers are unknown to the registry, `BLOB_UNKNOWN` errors are
|
||||
returned. The `detail` field of the error response will have a `digest` field
|
||||
identifying the missing blob, which will be a tarsum. An error is returned for
|
||||
each unknown blob. The response format is as follows:
|
||||
|
||||
{
|
||||
"errors:" [{
|
||||
"code": "BLOB_UNKNOWN",
|
||||
"message": "blob unknown to registry",
|
||||
"detail": {
|
||||
"digest": <tarsum>
|
||||
}
|
||||
},
|
||||
...
|
||||
]
|
||||
}
|
||||
|
||||
#### Listing Image Tags
|
||||
|
||||
It may be necessary to list all of the tags under a given repository. The tags
|
||||
for an image repository can be retrieved with the following request:
|
||||
|
||||
GET /v2/<name>/tags/list
|
||||
|
||||
The response will be in the following format:
|
||||
|
||||
200 OK
|
||||
Content-Type: application/json
|
||||
|
||||
{
|
||||
"name": <name>,
|
||||
"tags": [
|
||||
<tag>,
|
||||
...
|
||||
]
|
||||
}
|
||||
|
||||
For repositories with a large number of tags, this response may be quite
|
||||
large, so care should be taken by the client when parsing the response to
|
||||
reduce copying.
|
||||
|
||||
### Deleting an Image
|
||||
|
||||
An image may be deleted from the registry via its `name` and `tag`. A delete
|
||||
may be issued with the following request format:
|
||||
|
||||
DELETE /v2/<name>/manifests/<tag>
|
||||
|
||||
If the image exists and has been successfully deleted, the following response
|
||||
will be issued:
|
||||
|
||||
202 Accepted
|
||||
Content-Length: None
|
||||
|
||||
If the image had already been deleted or did not exist, a `404 Not Found`
|
||||
response will be issued instead.
|
||||
|
||||
## Detail
|
||||
|
||||
> **Note**: This section is still under construction. For the purposes of
|
||||
> implementation, if any details below differ from the described request flows
|
||||
> above, the section below should be corrected. When they match, this note
|
||||
> should be removed.
|
||||
|
||||
The behavior of the endpoints are covered in detail in this section, organized
|
||||
by route and entity. All aspects of the request and responses are covered,
|
||||
including headers, parameters and body formats. Examples of requests and their
|
||||
corresponding responses, with success and failure, are enumerated.
|
||||
|
||||
> **Note**: The sections on endpoint detail are arranged with an example
|
||||
> request, a description of the request, followed by information about that
|
||||
> request.
|
||||
|
||||
A list of methods and URIs are covered in the table below:
|
||||
|
||||
|Method|Path|Entity|Description|
|
||||
-------|----|------|------------
|
||||
{{range $route := .RouteDescriptors}}{{range $method := .Methods}}| {{$method.Method}} | `{{$route.Path|prettygorilla}}` | {{$route.Entity}} | {{$method.Description}} |
|
||||
{{end}}{{end}}
|
||||
|
||||
The detail for each endpoint is covered in the following sections.
|
||||
|
||||
### Errors
|
||||
|
||||
The error codes encountered via the API are enumerated in the following table:
|
||||
|
||||
|Code|Message|Description|
|
||||
-------|----|------|------------
|
||||
{{range $err := .ErrorDescriptors}} `{{$err.Value}}` | {{$err.Message}} | {{$err.Description|removenewlines}}
|
||||
{{end}}
|
||||
|
||||
{{range $route := .RouteDescriptors}}
|
||||
### {{.Entity}}
|
||||
|
||||
{{.Description}}
|
||||
|
||||
{{range $method := $route.Methods}}
|
||||
|
||||
#### {{.Method}} {{$route.Entity}}
|
||||
|
||||
{{.Description}}
|
||||
|
||||
{{if .Requests}}{{range .Requests}}
|
||||
##### {{.Name}}
|
||||
|
||||
```
|
||||
{{$method.Method}} {{$route.Path|prettygorilla}}{{if .QueryParameters}}?{{range .QueryParameters}}{{.Name}}={{.Format}}{{end}}{{end}}{{range .Headers}}
|
||||
{{.Name}}: {{.Format}}{{end}}{{if .Body.ContentType}}
|
||||
Content-Type: {{.Body.ContentType}}{{end}}{{if .Body.Format}}
|
||||
|
||||
{{.Body.Format}}{{end}}
|
||||
```
|
||||
|
||||
{{.Description}}
|
||||
|
||||
{{if or .Headers .PathParameters .QueryParameters}}
|
||||
The following parameters should be specified on the request:
|
||||
|
||||
|Name|Kind|Description|
|
||||
|----|----|-----------|
|
||||
{{range .Headers}}|`{{.Name}}`|header|{{.Description}}|
|
||||
{{end}}{{range .PathParameters}}|`{{.Name}}`|path|{{.Description}}|
|
||||
{{end}}{{range .QueryParameters}}|`{{.Name}}`|query|{{.Description}}|
|
||||
{{end}}{{end}}
|
||||
|
||||
{{if .Successes}}
|
||||
{{range .Successes}}
|
||||
###### On Success: {{if .Name}}{{.Name}}{{else}}{{.StatusCode | statustext}}{{end}}
|
||||
|
||||
```
|
||||
{{.StatusCode}} {{.StatusCode | statustext}}{{range .Headers}}
|
||||
{{.Name}}: {{.Format}}{{end}}{{if .Body.ContentType}}
|
||||
Content-Type: {{.Body.ContentType}}{{end}}{{if .Body.Format}}
|
||||
|
||||
{{.Body.Format}}{{end}}
|
||||
```
|
||||
|
||||
{{.Description}}{{if .Headers}}
|
||||
The following headers will be returned on the response:
|
||||
|
||||
|Name|Description|
|
||||
|----|-----------|
|
||||
{{range .Headers}}|`{{.Name}}`|{{.Description}}|
|
||||
{{end}}{{end}}{{end}}{{end}}
|
||||
|
||||
{{if .Failures}}
|
||||
{{range .Failures}}
|
||||
###### On Failure: {{if .Name}}{{.Name}}{{else}}{{.StatusCode | statustext}}{{end}}
|
||||
|
||||
```
|
||||
{{.StatusCode}} {{.StatusCode | statustext}}{{range .Headers}}
|
||||
{{.Name}}: {{.Format}}{{end}}{{if .Body.ContentType}}
|
||||
Content-Type: {{.Body.ContentType}}{{end}}{{if .Body.Format}}
|
||||
|
||||
{{.Body.Format}}{{end}}
|
||||
```
|
||||
|
||||
{{.Description}}
|
||||
{{if .Headers}}
|
||||
The following headers will be returned on the response:
|
||||
|
||||
|Name|Description|
|
||||
|----|-----------|
|
||||
{{range .Headers}}|`{{.Name}}`|{{.Description}}|
|
||||
{{end}}{{end}}
|
||||
|
||||
{{if .ErrorCodes}}
|
||||
The error codes that may be included in the response body are enumerated below:
|
||||
|
||||
|Code|Message|Description|
|
||||
-------|----|------|------------
|
||||
{{range $err := .ErrorCodes}}| `{{$err}}` | {{$err.Descriptor.Message}} | {{$err.Descriptor.Description|removenewlines}} |
|
||||
{{end}}
|
||||
|
||||
{{end}}{{end}}{{end}}{{end}}{{end}}{{end}}
|
||||
|
||||
{{end}}
|
||||
|
|
@ -1,13 +1,28 @@
|
|||
// +build ignore
|
||||
|
||||
// Package s3 provides a storagedriver.StorageDriver implementation to
|
||||
// store blobs in Amazon S3 cloud storage.
|
||||
//
|
||||
// This package leverages the crowdmob/goamz client library for interfacing with
|
||||
// s3.
|
||||
//
|
||||
// Because s3 is a key, value store the Stat call does not support last modification
|
||||
// time for directories (directories are an abstraction for key, value stores)
|
||||
//
|
||||
// Keep in mind that s3 guarantees only eventual consistency, so do not assume
|
||||
// that a successful write will mean immediate access to the data written (although
|
||||
// in most regions a new object put has guaranteed read after write). The only true
|
||||
// guarantee is that once you call Stat and receive a certain file size, that much of
|
||||
// the file is already accessible.
|
||||
package s3
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"fmt"
|
||||
"io"
|
||||
"io/ioutil"
|
||||
"net/http"
|
||||
"strconv"
|
||||
"strings"
|
||||
"time"
|
||||
|
||||
"github.com/crowdmob/goamz/aws"
|
||||
"github.com/crowdmob/goamz/s3"
|
||||
|
|
@ -19,10 +34,10 @@ const driverName = "s3"
|
|||
|
||||
// minChunkSize defines the minimum multipart upload chunk size
|
||||
// S3 API requires multipart upload chunks to be at least 5MB
|
||||
const minChunkSize = 5 * 1024 * 1024
|
||||
const chunkSize = 5 * 1024 * 1024
|
||||
|
||||
// listPartsMax is the largest amount of parts you can request from S3
|
||||
const listPartsMax = 1000
|
||||
// listMax is the largest amount of objects you can request from S3 in a list call
|
||||
const listMax = 1000
|
||||
|
||||
func init() {
|
||||
factory.Register(driverName, &s3DriverFactory{})
|
||||
|
|
@ -31,16 +46,17 @@ func init() {
|
|||
// s3DriverFactory implements the factory.StorageDriverFactory interface
|
||||
type s3DriverFactory struct{}
|
||||
|
||||
func (factory *s3DriverFactory) Create(parameters map[string]string) (storagedriver.StorageDriver, error) {
|
||||
func (factory *s3DriverFactory) Create(parameters map[string]interface{}) (storagedriver.StorageDriver, error) {
|
||||
return FromParameters(parameters)
|
||||
}
|
||||
|
||||
// Driver is a storagedriver.StorageDriver implementation backed by Amazon S3
|
||||
// Objects are stored at absolute keys in the provided bucket
|
||||
type Driver struct {
|
||||
S3 *s3.S3
|
||||
Bucket *s3.Bucket
|
||||
Encrypt bool
|
||||
S3 *s3.S3
|
||||
Bucket *s3.Bucket
|
||||
Encrypt bool
|
||||
rootDirectory string
|
||||
}
|
||||
|
||||
// FromParameters constructs a new Driver with a given parameters map
|
||||
|
|
@ -50,28 +66,24 @@ type Driver struct {
|
|||
// - region
|
||||
// - bucket
|
||||
// - encrypt
|
||||
func FromParameters(parameters map[string]string) (*Driver, error) {
|
||||
accessKey, ok := parameters["accesskey"]
|
||||
if !ok || accessKey == "" {
|
||||
return nil, fmt.Errorf("No accesskey parameter provided")
|
||||
}
|
||||
|
||||
secretKey, ok := parameters["secretkey"]
|
||||
if !ok || secretKey == "" {
|
||||
return nil, fmt.Errorf("No secretkey parameter provided")
|
||||
}
|
||||
func FromParameters(parameters map[string]interface{}) (*Driver, error) {
|
||||
// Providing no values for these is valid in case the user is authenticating
|
||||
// with an IAM on an ec2 instance (in which case the instance credentials will
|
||||
// be summoned when GetAuth is called)
|
||||
accessKey, _ := parameters["accesskey"]
|
||||
secretKey, _ := parameters["secretkey"]
|
||||
|
||||
regionName, ok := parameters["region"]
|
||||
if !ok || regionName == "" {
|
||||
if !ok || regionName.(string) == "" {
|
||||
return nil, fmt.Errorf("No region parameter provided")
|
||||
}
|
||||
region := aws.GetRegion(regionName)
|
||||
region := aws.GetRegion(fmt.Sprint(regionName))
|
||||
if region.Name == "" {
|
||||
return nil, fmt.Errorf("Invalid region provided: %v", region)
|
||||
}
|
||||
|
||||
bucket, ok := parameters["bucket"]
|
||||
if !ok || bucket == "" {
|
||||
if !ok || fmt.Sprint(bucket) == "" {
|
||||
return nil, fmt.Errorf("No bucket parameter provided")
|
||||
}
|
||||
|
||||
|
|
@ -80,136 +92,415 @@ func FromParameters(parameters map[string]string) (*Driver, error) {
|
|||
return nil, fmt.Errorf("No encrypt parameter provided")
|
||||
}
|
||||
|
||||
encryptBool, err := strconv.ParseBool(encrypt)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("Unable to parse the encrypt parameter: %v", err)
|
||||
encryptBool, ok := encrypt.(bool)
|
||||
if !ok {
|
||||
return nil, fmt.Errorf("The encrypt parameter should be a boolean")
|
||||
}
|
||||
return New(accessKey, secretKey, region, encryptBool, bucket)
|
||||
|
||||
rootDirectory, ok := parameters["rootdirectory"]
|
||||
if !ok {
|
||||
return nil, fmt.Errorf("No rootdirectory parameter provided")
|
||||
}
|
||||
|
||||
return New(fmt.Sprint(accessKey), fmt.Sprint(secretKey), fmt.Sprint(bucket), fmt.Sprint(rootDirectory), region, encryptBool)
|
||||
}
|
||||
|
||||
// New constructs a new Driver with the given AWS credentials, region, encryption flag, and
|
||||
// bucketName
|
||||
func New(accessKey string, secretKey string, region aws.Region, encrypt bool, bucketName string) (*Driver, error) {
|
||||
auth := aws.Auth{AccessKey: accessKey, SecretKey: secretKey}
|
||||
func New(accessKey, secretKey, bucketName, rootDirectory string, region aws.Region, encrypt bool) (*Driver, error) {
|
||||
auth, err := aws.GetAuth(accessKey, secretKey, "", time.Time{})
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
s3obj := s3.New(auth, region)
|
||||
bucket := s3obj.Bucket(bucketName)
|
||||
|
||||
if err := bucket.PutBucket(getPermissions()); err != nil {
|
||||
s3Err, ok := err.(*s3.Error)
|
||||
if !(ok && s3Err.Code == "BucketAlreadyOwnedByYou") {
|
||||
return nil, err
|
||||
}
|
||||
if _, err := bucket.List("", "", "", 1); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return &Driver{s3obj, bucket, encrypt}, nil
|
||||
// TODO Currently multipart uploads have no timestamps, so this would be unwise
|
||||
// if you initiated a new s3driver while another one is running on the same bucket.
|
||||
// multis, _, err := bucket.ListMulti("", "")
|
||||
// if err != nil {
|
||||
// return nil, err
|
||||
// }
|
||||
|
||||
// for _, multi := range multis {
|
||||
// err := multi.Abort()
|
||||
// //TODO appropriate to do this error checking?
|
||||
// if err != nil {
|
||||
// return nil, err
|
||||
// }
|
||||
// }
|
||||
|
||||
return &Driver{s3obj, bucket, encrypt, rootDirectory}, nil
|
||||
}
|
||||
|
||||
// Implement the storagedriver.StorageDriver interface
|
||||
|
||||
// GetContent retrieves the content stored at "path" as a []byte.
|
||||
func (d *Driver) GetContent(path string) ([]byte, error) {
|
||||
content, err := d.Bucket.Get(path)
|
||||
if !storagedriver.PathRegexp.MatchString(path) {
|
||||
return nil, storagedriver.InvalidPathError{Path: path}
|
||||
}
|
||||
|
||||
content, err := d.Bucket.Get(d.s3Path(path))
|
||||
if err != nil {
|
||||
return nil, storagedriver.PathNotFoundError{Path: path}
|
||||
return nil, parseError(path, err)
|
||||
}
|
||||
return content, nil
|
||||
}
|
||||
|
||||
// PutContent stores the []byte content at a location designated by "path".
|
||||
func (d *Driver) PutContent(path string, contents []byte) error {
|
||||
return d.Bucket.Put(path, contents, d.getContentType(), getPermissions(), d.getOptions())
|
||||
if !storagedriver.PathRegexp.MatchString(path) {
|
||||
return storagedriver.InvalidPathError{Path: path}
|
||||
}
|
||||
|
||||
return parseError(path, d.Bucket.Put(d.s3Path(path), contents, d.getContentType(), getPermissions(), d.getOptions()))
|
||||
}
|
||||
|
||||
// ReadStream retrieves an io.ReadCloser for the content stored at "path" with a
|
||||
// given byte offset.
|
||||
func (d *Driver) ReadStream(path string, offset int64) (io.ReadCloser, error) {
|
||||
if !storagedriver.PathRegexp.MatchString(path) {
|
||||
return nil, storagedriver.InvalidPathError{Path: path}
|
||||
}
|
||||
|
||||
if offset < 0 {
|
||||
return nil, storagedriver.InvalidOffsetError{Path: path, Offset: offset}
|
||||
}
|
||||
|
||||
headers := make(http.Header)
|
||||
headers.Add("Range", "bytes="+strconv.FormatInt(offset, 10)+"-")
|
||||
|
||||
resp, err := d.Bucket.GetResponseWithHeaders(path, headers)
|
||||
resp, err := d.Bucket.GetResponseWithHeaders(d.s3Path(path), headers)
|
||||
if err != nil {
|
||||
return nil, storagedriver.PathNotFoundError{Path: path}
|
||||
if s3Err, ok := err.(*s3.Error); ok && s3Err.Code == "InvalidRange" {
|
||||
return ioutil.NopCloser(bytes.NewReader(nil)), nil
|
||||
}
|
||||
|
||||
return nil, parseError(path, err)
|
||||
}
|
||||
return resp.Body, nil
|
||||
}
|
||||
|
||||
// WriteStream stores the contents of the provided io.ReadCloser at a location
|
||||
// designated by the given path.
|
||||
func (d *Driver) WriteStream(path string, offset, size int64, reader io.ReadCloser) error {
|
||||
defer reader.Close()
|
||||
// WriteStream stores the contents of the provided io.Reader at a
|
||||
// location designated by the given path. The driver will know it has
|
||||
// received the full contents when the reader returns io.EOF. The number
|
||||
// of successfully READ bytes will be returned, even if an error is
|
||||
// returned. May be used to resume writing a stream by providing a nonzero
|
||||
// offset. Offsets past the current size will write from the position
|
||||
// beyond the end of the file.
|
||||
func (d *Driver) WriteStream(path string, offset int64, reader io.Reader) (totalRead int64, err error) {
|
||||
if !storagedriver.PathRegexp.MatchString(path) {
|
||||
return 0, storagedriver.InvalidPathError{Path: path}
|
||||
}
|
||||
|
||||
chunkSize := int64(minChunkSize)
|
||||
for size/chunkSize >= listPartsMax {
|
||||
chunkSize *= 2
|
||||
if offset < 0 {
|
||||
return 0, storagedriver.InvalidOffsetError{Path: path, Offset: offset}
|
||||
}
|
||||
|
||||
partNumber := 1
|
||||
var totalRead int64
|
||||
multi, parts, err := d.getAllParts(path)
|
||||
bytesRead := 0
|
||||
parts := []s3.Part{}
|
||||
var part s3.Part
|
||||
|
||||
multi, err := d.Bucket.InitMulti(d.s3Path(path), d.getContentType(), getPermissions(), d.getOptions())
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if (offset) > int64(len(parts))*chunkSize || (offset < size && offset%chunkSize != 0) {
|
||||
return storagedriver.InvalidOffsetError{Path: path, Offset: offset}
|
||||
}
|
||||
|
||||
if len(parts) > 0 {
|
||||
partNumber = int(offset/chunkSize) + 1
|
||||
totalRead = offset
|
||||
parts = parts[0 : partNumber-1]
|
||||
return 0, err
|
||||
}
|
||||
|
||||
buf := make([]byte, chunkSize)
|
||||
for {
|
||||
bytesRead, err := io.ReadFull(reader, buf)
|
||||
totalRead += int64(bytesRead)
|
||||
zeroBuf := make([]byte, chunkSize)
|
||||
|
||||
if err != nil && err != io.ErrUnexpectedEOF && err != io.EOF {
|
||||
// We never want to leave a dangling multipart upload, our only consistent state is
|
||||
// when there is a whole object at path. This is in order to remain consistent with
|
||||
// the stat call.
|
||||
//
|
||||
// Note that if the machine dies before executing the defer, we will be left with a dangling
|
||||
// multipart upload, which will eventually be cleaned up, but we will lose all of the progress
|
||||
// made prior to the machine crashing.
|
||||
defer func() {
|
||||
if len(parts) > 0 {
|
||||
if multi == nil {
|
||||
// Parts should be empty if the multi is not initialized
|
||||
panic("Unreachable")
|
||||
} else {
|
||||
if multi.Complete(parts) != nil {
|
||||
multi.Abort()
|
||||
}
|
||||
}
|
||||
}
|
||||
}()
|
||||
|
||||
// Fills from 0 to total from current
|
||||
fromSmallCurrent := func(total int64) error {
|
||||
current, err := d.ReadStream(path, 0)
|
||||
if err != nil {
|
||||
return err
|
||||
} else if (int64(bytesRead) < chunkSize) && totalRead != size {
|
||||
break
|
||||
} else {
|
||||
part, err := multi.PutPart(int(partNumber), bytes.NewReader(buf[0:bytesRead]))
|
||||
}
|
||||
|
||||
bytesRead = 0
|
||||
for int64(bytesRead) < total {
|
||||
//The loop should very rarely enter a second iteration
|
||||
nn, err := current.Read(buf[bytesRead:total])
|
||||
bytesRead += nn
|
||||
if err != nil {
|
||||
if err != io.EOF {
|
||||
return err
|
||||
}
|
||||
|
||||
break
|
||||
}
|
||||
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// Fills from parameter to chunkSize from reader
|
||||
fromReader := func(from int64) error {
|
||||
bytesRead = 0
|
||||
for from+int64(bytesRead) < chunkSize {
|
||||
nn, err := reader.Read(buf[from+int64(bytesRead):])
|
||||
totalRead += int64(nn)
|
||||
bytesRead += nn
|
||||
|
||||
if err != nil {
|
||||
if err != io.EOF {
|
||||
return err
|
||||
}
|
||||
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
if bytesRead > 0 {
|
||||
part, err = multi.PutPart(int(partNumber), bytes.NewReader(buf[0:int64(bytesRead)+from]))
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
parts = append(parts, part)
|
||||
if totalRead == size {
|
||||
multi.Complete(parts)
|
||||
break
|
||||
partNumber++
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
if offset > 0 {
|
||||
resp, err := d.Bucket.Head(d.s3Path(path), nil)
|
||||
if err != nil {
|
||||
if s3Err, ok := err.(*s3.Error); !ok || s3Err.Code != "NoSuchKey" {
|
||||
return 0, err
|
||||
}
|
||||
}
|
||||
|
||||
currentLength := int64(0)
|
||||
if err == nil {
|
||||
currentLength = resp.ContentLength
|
||||
}
|
||||
|
||||
if currentLength >= offset {
|
||||
if offset < chunkSize {
|
||||
// chunkSize > currentLength >= offset
|
||||
if err = fromSmallCurrent(offset); err != nil {
|
||||
return totalRead, err
|
||||
}
|
||||
|
||||
if err = fromReader(offset); err != nil {
|
||||
return totalRead, err
|
||||
}
|
||||
|
||||
if totalRead+offset < chunkSize {
|
||||
return totalRead, nil
|
||||
}
|
||||
} else {
|
||||
// currentLength >= offset >= chunkSize
|
||||
_, part, err = multi.PutPartCopy(partNumber,
|
||||
s3.CopyOptions{CopySourceOptions: "bytes=0-" + strconv.FormatInt(offset-1, 10)},
|
||||
d.Bucket.Name+"/"+d.s3Path(path))
|
||||
if err != nil {
|
||||
return 0, err
|
||||
}
|
||||
|
||||
parts = append(parts, part)
|
||||
partNumber++
|
||||
}
|
||||
} else {
|
||||
// Fills between parameters with 0s but only when to - from <= chunkSize
|
||||
fromZeroFillSmall := func(from, to int64) error {
|
||||
bytesRead = 0
|
||||
for from+int64(bytesRead) < to {
|
||||
nn, err := bytes.NewReader(zeroBuf).Read(buf[from+int64(bytesRead) : to])
|
||||
bytesRead += nn
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// Fills between parameters with 0s, making new parts
|
||||
fromZeroFillLarge := func(from, to int64) error {
|
||||
bytesRead64 := int64(0)
|
||||
for to-(from+bytesRead64) >= chunkSize {
|
||||
part, err := multi.PutPart(int(partNumber), bytes.NewReader(zeroBuf))
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
bytesRead64 += chunkSize
|
||||
|
||||
parts = append(parts, part)
|
||||
partNumber++
|
||||
}
|
||||
|
||||
return fromZeroFillSmall(0, (to-from)%chunkSize)
|
||||
}
|
||||
|
||||
// currentLength < offset
|
||||
if currentLength < chunkSize {
|
||||
if offset < chunkSize {
|
||||
// chunkSize > offset > currentLength
|
||||
if err = fromSmallCurrent(currentLength); err != nil {
|
||||
return totalRead, err
|
||||
}
|
||||
|
||||
if err = fromZeroFillSmall(currentLength, offset); err != nil {
|
||||
return totalRead, err
|
||||
}
|
||||
|
||||
if err = fromReader(offset); err != nil {
|
||||
return totalRead, err
|
||||
}
|
||||
|
||||
if totalRead+offset < chunkSize {
|
||||
return totalRead, nil
|
||||
}
|
||||
} else {
|
||||
// offset >= chunkSize > currentLength
|
||||
if err = fromSmallCurrent(currentLength); err != nil {
|
||||
return totalRead, err
|
||||
}
|
||||
|
||||
if err = fromZeroFillSmall(currentLength, chunkSize); err != nil {
|
||||
return totalRead, err
|
||||
}
|
||||
|
||||
part, err = multi.PutPart(int(partNumber), bytes.NewReader(buf))
|
||||
if err != nil {
|
||||
return totalRead, err
|
||||
}
|
||||
|
||||
parts = append(parts, part)
|
||||
partNumber++
|
||||
|
||||
//Zero fill from chunkSize up to offset, then some reader
|
||||
if err = fromZeroFillLarge(chunkSize, offset); err != nil {
|
||||
return totalRead, err
|
||||
}
|
||||
|
||||
if err = fromReader(offset % chunkSize); err != nil {
|
||||
return totalRead, err
|
||||
}
|
||||
|
||||
if totalRead+(offset%chunkSize) < chunkSize {
|
||||
return totalRead, nil
|
||||
}
|
||||
}
|
||||
} else {
|
||||
// offset > currentLength >= chunkSize
|
||||
_, part, err = multi.PutPartCopy(partNumber,
|
||||
s3.CopyOptions{CopySourceOptions: "bytes=0-" + strconv.FormatInt(currentLength-1, 10)},
|
||||
d.Bucket.Name+"/"+d.s3Path(path))
|
||||
if err != nil {
|
||||
return 0, err
|
||||
}
|
||||
|
||||
parts = append(parts, part)
|
||||
partNumber++
|
||||
|
||||
//Zero fill from currentLength up to offset, then some reader
|
||||
if err = fromZeroFillLarge(currentLength, offset); err != nil {
|
||||
return totalRead, err
|
||||
}
|
||||
|
||||
if err = fromReader((offset - currentLength) % chunkSize); err != nil {
|
||||
return totalRead, err
|
||||
}
|
||||
|
||||
if totalRead+((offset-currentLength)%chunkSize) < chunkSize {
|
||||
return totalRead, nil
|
||||
}
|
||||
}
|
||||
|
||||
partNumber++
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
for {
|
||||
if err = fromReader(0); err != nil {
|
||||
return totalRead, err
|
||||
}
|
||||
|
||||
if int64(bytesRead) < chunkSize {
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
return totalRead, nil
|
||||
}
|
||||
|
||||
// CurrentSize retrieves the curernt size in bytes of the object at the given
|
||||
// path.
|
||||
func (d *Driver) CurrentSize(path string) (uint64, error) {
|
||||
_, parts, err := d.getAllParts(path)
|
||||
// Stat retrieves the FileInfo for the given path, including the current size
|
||||
// in bytes and the creation time.
|
||||
func (d *Driver) Stat(path string) (storagedriver.FileInfo, error) {
|
||||
if !storagedriver.PathRegexp.MatchString(path) {
|
||||
return nil, storagedriver.InvalidPathError{Path: path}
|
||||
}
|
||||
|
||||
listResponse, err := d.Bucket.List(d.s3Path(path), "", "", 1)
|
||||
if err != nil {
|
||||
return 0, err
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if len(parts) == 0 {
|
||||
return 0, nil
|
||||
fi := storagedriver.FileInfoFields{
|
||||
Path: path,
|
||||
}
|
||||
|
||||
return (((uint64(len(parts)) - 1) * uint64(parts[0].Size)) + uint64(parts[len(parts)-1].Size)), nil
|
||||
if len(listResponse.Contents) == 1 {
|
||||
if listResponse.Contents[0].Key != d.s3Path(path) {
|
||||
fi.IsDir = true
|
||||
} else {
|
||||
fi.IsDir = false
|
||||
fi.Size = listResponse.Contents[0].Size
|
||||
|
||||
timestamp, err := time.Parse(time.RFC3339Nano, listResponse.Contents[0].LastModified)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
fi.ModTime = timestamp
|
||||
}
|
||||
} else if len(listResponse.CommonPrefixes) == 1 {
|
||||
fi.IsDir = true
|
||||
} else {
|
||||
return nil, storagedriver.PathNotFoundError{Path: path}
|
||||
}
|
||||
|
||||
return storagedriver.FileInfoInternal{FileInfoFields: fi}, nil
|
||||
}
|
||||
|
||||
// List returns a list of the objects that are direct descendants of the given
|
||||
// path.
|
||||
// List returns a list of the objects that are direct descendants of the given path.
|
||||
func (d *Driver) List(path string) ([]string, error) {
|
||||
if path[len(path)-1] != '/' {
|
||||
if !storagedriver.PathRegexp.MatchString(path) && path != "/" {
|
||||
return nil, storagedriver.InvalidPathError{Path: path}
|
||||
}
|
||||
|
||||
if path != "/" && path[len(path)-1] != '/' {
|
||||
path = path + "/"
|
||||
}
|
||||
listResponse, err := d.Bucket.List(path, "/", "", listPartsMax)
|
||||
listResponse, err := d.Bucket.List(d.s3Path(path), "/", "", listMax)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
|
@ -219,15 +510,15 @@ func (d *Driver) List(path string) ([]string, error) {
|
|||
|
||||
for {
|
||||
for _, key := range listResponse.Contents {
|
||||
files = append(files, key.Key)
|
||||
files = append(files, strings.Replace(key.Key, d.s3Path(""), "", 1))
|
||||
}
|
||||
|
||||
for _, commonPrefix := range listResponse.CommonPrefixes {
|
||||
directories = append(directories, commonPrefix[0:len(commonPrefix)-1])
|
||||
directories = append(directories, strings.Replace(commonPrefix[0:len(commonPrefix)-1], d.s3Path(""), "", 1))
|
||||
}
|
||||
|
||||
if listResponse.IsTruncated {
|
||||
listResponse, err = d.Bucket.List(path, "/", listResponse.NextMarker, listPartsMax)
|
||||
listResponse, err = d.Bucket.List(d.s3Path(path), "/", listResponse.NextMarker, listMax)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
|
@ -242,12 +533,17 @@ func (d *Driver) List(path string) ([]string, error) {
|
|||
// Move moves an object stored at sourcePath to destPath, removing the original
|
||||
// object.
|
||||
func (d *Driver) Move(sourcePath string, destPath string) error {
|
||||
if !storagedriver.PathRegexp.MatchString(sourcePath) {
|
||||
return storagedriver.InvalidPathError{Path: sourcePath}
|
||||
} else if !storagedriver.PathRegexp.MatchString(destPath) {
|
||||
return storagedriver.InvalidPathError{Path: destPath}
|
||||
}
|
||||
|
||||
/* This is terrible, but aws doesn't have an actual move. */
|
||||
_, err := d.Bucket.PutCopy(destPath, getPermissions(),
|
||||
s3.CopyOptions{Options: d.getOptions(), MetadataDirective: "", ContentType: d.getContentType()},
|
||||
d.Bucket.Name+"/"+sourcePath)
|
||||
_, err := d.Bucket.PutCopy(d.s3Path(destPath), getPermissions(),
|
||||
s3.CopyOptions{Options: d.getOptions(), ContentType: d.getContentType()}, d.Bucket.Name+"/"+d.s3Path(sourcePath))
|
||||
if err != nil {
|
||||
return storagedriver.PathNotFoundError{Path: sourcePath}
|
||||
return parseError(sourcePath, err)
|
||||
}
|
||||
|
||||
return d.Delete(sourcePath)
|
||||
|
|
@ -255,12 +551,16 @@ func (d *Driver) Move(sourcePath string, destPath string) error {
|
|||
|
||||
// Delete recursively deletes all objects stored at "path" and its subpaths.
|
||||
func (d *Driver) Delete(path string) error {
|
||||
listResponse, err := d.Bucket.List(path, "", "", listPartsMax)
|
||||
if !storagedriver.PathRegexp.MatchString(path) {
|
||||
return storagedriver.InvalidPathError{Path: path}
|
||||
}
|
||||
|
||||
listResponse, err := d.Bucket.List(d.s3Path(path), "", "", listMax)
|
||||
if err != nil || len(listResponse.Contents) == 0 {
|
||||
return storagedriver.PathNotFoundError{Path: path}
|
||||
}
|
||||
|
||||
s3Objects := make([]s3.Object, listPartsMax)
|
||||
s3Objects := make([]s3.Object, listMax)
|
||||
|
||||
for len(listResponse.Contents) > 0 {
|
||||
for index, key := range listResponse.Contents {
|
||||
|
|
@ -272,7 +572,7 @@ func (d *Driver) Delete(path string) error {
|
|||
return nil
|
||||
}
|
||||
|
||||
listResponse, err = d.Bucket.List(path, "", "", listPartsMax)
|
||||
listResponse, err = d.Bucket.List(d.s3Path(path), "", "", listMax)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
|
@ -281,35 +581,16 @@ func (d *Driver) Delete(path string) error {
|
|||
return nil
|
||||
}
|
||||
|
||||
func (d *Driver) getHighestIDMulti(path string) (multi *s3.Multi, err error) {
|
||||
multis, _, err := d.Bucket.ListMulti(path, "")
|
||||
if err != nil && !hasCode(err, "NoSuchUpload") {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
uploadID := ""
|
||||
|
||||
if len(multis) > 0 {
|
||||
for _, m := range multis {
|
||||
if m.Key == path && m.UploadId >= uploadID {
|
||||
uploadID = m.UploadId
|
||||
multi = m
|
||||
}
|
||||
}
|
||||
return multi, nil
|
||||
}
|
||||
multi, err = d.Bucket.InitMulti(path, d.getContentType(), getPermissions(), d.getOptions())
|
||||
return multi, err
|
||||
func (d *Driver) s3Path(path string) string {
|
||||
return strings.TrimLeft(strings.TrimRight(d.rootDirectory, "/")+path, "/")
|
||||
}
|
||||
|
||||
func (d *Driver) getAllParts(path string) (*s3.Multi, []s3.Part, error) {
|
||||
multi, err := d.getHighestIDMulti(path)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
func parseError(path string, err error) error {
|
||||
if s3Err, ok := err.(*s3.Error); ok && s3Err.Code == "NoSuchKey" {
|
||||
return storagedriver.PathNotFoundError{Path: path}
|
||||
}
|
||||
|
||||
parts, err := multi.ListParts()
|
||||
return multi, parts, err
|
||||
return err
|
||||
}
|
||||
|
||||
func hasCode(err error, code string) bool {
|
||||
|
|
|
|||
|
|
@ -1,8 +1,7 @@
|
|||
// +build ignore
|
||||
|
||||
package s3
|
||||
|
||||
import (
|
||||
"io/ioutil"
|
||||
"os"
|
||||
"strconv"
|
||||
"testing"
|
||||
|
|
@ -22,13 +21,18 @@ func init() {
|
|||
secretKey := os.Getenv("AWS_SECRET_KEY")
|
||||
bucket := os.Getenv("S3_BUCKET")
|
||||
encrypt := os.Getenv("S3_ENCRYPT")
|
||||
region := os.Getenv("AWS_REGION")
|
||||
root, err := ioutil.TempDir("", "driver-")
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
|
||||
s3DriverConstructor := func(region aws.Region) (storagedriver.StorageDriver, error) {
|
||||
shouldEncrypt, err := strconv.ParseBool(encrypt)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return New(accessKey, secretKey, region, shouldEncrypt, bucket)
|
||||
return New(accessKey, secretKey, bucket, root, region, shouldEncrypt)
|
||||
}
|
||||
|
||||
// Skip S3 storage driver tests if environment variable parameters are not provided
|
||||
|
|
@ -39,18 +43,20 @@ func init() {
|
|||
return ""
|
||||
}
|
||||
|
||||
for _, region := range aws.Regions {
|
||||
if region == aws.USGovWest {
|
||||
continue
|
||||
}
|
||||
// for _, region := range aws.Regions {
|
||||
// if region == aws.USGovWest {
|
||||
// continue
|
||||
// }
|
||||
|
||||
testsuites.RegisterInProcessSuite(s3DriverConstructor(region), skipCheck)
|
||||
testsuites.RegisterIPCSuite(driverName, map[string]string{
|
||||
"accesskey": accessKey,
|
||||
"secretkey": secretKey,
|
||||
"region": region.Name,
|
||||
"bucket": bucket,
|
||||
"encrypt": encrypt,
|
||||
}, skipCheck)
|
||||
}
|
||||
testsuites.RegisterInProcessSuite(func() (storagedriver.StorageDriver, error) {
|
||||
return s3DriverConstructor(aws.GetRegion(region))
|
||||
}, skipCheck)
|
||||
// testsuites.RegisterIPCSuite(driverName, map[string]string{
|
||||
// "accesskey": accessKey,
|
||||
// "secretkey": secretKey,
|
||||
// "region": region.Name,
|
||||
// "bucket": bucket,
|
||||
// "encrypt": encrypt,
|
||||
// }, skipCheck)
|
||||
// }
|
||||
}
|
||||
|
|
|
|||
|
|
@ -49,8 +49,6 @@ type StorageDriver interface {
|
|||
|
||||
// WriteStream stores the contents of the provided io.ReadCloser at a
|
||||
// location designated by the given path.
|
||||
// The driver will know it has received the full contents when it has read
|
||||
// "size" bytes.
|
||||
// May be used to resume writing a stream by providing a nonzero offset.
|
||||
// The offset must be no larger than the CurrentSize for this path.
|
||||
WriteStream(path string, offset int64, reader io.Reader) (nn int64, err error)
|
||||
|
|
|
|||
|
|
@ -362,7 +362,7 @@ func (suite *DriverSuite) TestContinueStreamAppend(c *check.C) {
|
|||
filename := randomPath(32)
|
||||
defer suite.StorageDriver.Delete(firstPart(filename))
|
||||
|
||||
chunkSize := int64(10 * 1024 * 1024)
|
||||
chunkSize := int64(5 * 1024 * 1024)
|
||||
|
||||
contentsChunk1 := randomContents(chunkSize)
|
||||
contentsChunk2 := randomContents(chunkSize)
|
||||
|
|
@ -687,9 +687,11 @@ func (suite *DriverSuite) TestStatCall(c *check.C) {
|
|||
c.Assert(fi.Size(), check.Equals, int64(0))
|
||||
c.Assert(fi.IsDir(), check.Equals, true)
|
||||
|
||||
if start.After(fi.ModTime()) {
|
||||
c.Errorf("modtime %s before file created (%v)", fi.ModTime(), start)
|
||||
}
|
||||
// Directories do not need to support ModTime, since key-value stores
|
||||
// cannot support it efficiently.
|
||||
// if start.After(fi.ModTime()) {
|
||||
// c.Errorf("modtime %s before file created (%v)", fi.ModTime(), start)
|
||||
// }
|
||||
|
||||
if fi.ModTime().After(expectedModTime) {
|
||||
c.Errorf("modtime %s after file created (%v)", fi.ModTime(), expectedModTime)
|
||||
|
|
@ -763,6 +765,54 @@ func (suite *DriverSuite) TestConcurrentFileStreams(c *check.C) {
|
|||
wg.Wait()
|
||||
}
|
||||
|
||||
// TestEventualConsistency checks that if stat says that a file is a certain size, then
|
||||
// you can freely read from the file (this is the only guarantee that the driver needs to provide)
|
||||
func (suite *DriverSuite) TestEventualConsistency(c *check.C) {
|
||||
if testing.Short() {
|
||||
c.Skip("Skipping test in short mode")
|
||||
}
|
||||
|
||||
filename := randomPath(32)
|
||||
defer suite.StorageDriver.Delete(firstPart(filename))
|
||||
|
||||
var offset int64
|
||||
var misswrites int
|
||||
var chunkSize int64 = 32
|
||||
|
||||
for i := 0; i < 1024; i++ {
|
||||
contents := randomContents(chunkSize)
|
||||
read, err := suite.StorageDriver.WriteStream(filename, offset, bytes.NewReader(contents))
|
||||
c.Assert(err, check.IsNil)
|
||||
|
||||
fi, err := suite.StorageDriver.Stat(filename)
|
||||
c.Assert(err, check.IsNil)
|
||||
|
||||
// We are most concerned with being able to read data as soon as Stat declares
|
||||
// it is uploaded. This is the strongest guarantee that some drivers (that guarantee
|
||||
// at best eventual consistency) absolutely need to provide.
|
||||
if fi.Size() == offset+chunkSize {
|
||||
reader, err := suite.StorageDriver.ReadStream(filename, offset)
|
||||
c.Assert(err, check.IsNil)
|
||||
|
||||
readContents, err := ioutil.ReadAll(reader)
|
||||
c.Assert(err, check.IsNil)
|
||||
|
||||
c.Assert(readContents, check.DeepEquals, contents)
|
||||
|
||||
reader.Close()
|
||||
offset += read
|
||||
} else {
|
||||
misswrites++
|
||||
}
|
||||
}
|
||||
|
||||
if misswrites > 0 {
|
||||
c.Log("There were " + string(misswrites) + " occurences of a write not being instantly available.")
|
||||
}
|
||||
|
||||
c.Assert(misswrites, check.Not(check.Equals), 1024)
|
||||
}
|
||||
|
||||
// BenchmarkPutGetEmptyFiles benchmarks PutContent/GetContent for 0B files
|
||||
func (suite *DriverSuite) BenchmarkPutGetEmptyFiles(c *check.C) {
|
||||
suite.benchmarkPutGetFiles(c, 0)
|
||||
|
|
|
|||
Loading…
Reference in a new issue