a4024b2f90
Because manifests and their signatures are a discrete component of the registry, we are moving the definitions into a separate package. This causes us to lose some test coverage, but we can fill this in shortly. No changes have been made to the external interfaces, but they are likely to come. Signed-off-by: Stephen J Day <stephen.day@docker.com>
114 lines
3.5 KiB
Go
114 lines
3.5 KiB
Go
package registry
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import (
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"encoding/json"
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"fmt"
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"net/http"
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"github.com/docker/distribution/api/v2"
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"github.com/docker/distribution/digest"
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"github.com/docker/distribution/manifest"
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"github.com/docker/distribution/storage"
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"github.com/gorilla/handlers"
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)
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// imageManifestDispatcher takes the request context and builds the
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// appropriate handler for handling image manifest requests.
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func imageManifestDispatcher(ctx *Context, r *http.Request) http.Handler {
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imageManifestHandler := &imageManifestHandler{
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Context: ctx,
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Tag: ctx.vars["tag"],
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}
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imageManifestHandler.log = imageManifestHandler.log.WithField("tag", imageManifestHandler.Tag)
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return handlers.MethodHandler{
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"GET": http.HandlerFunc(imageManifestHandler.GetImageManifest),
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"PUT": http.HandlerFunc(imageManifestHandler.PutImageManifest),
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"DELETE": http.HandlerFunc(imageManifestHandler.DeleteImageManifest),
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}
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}
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// imageManifestHandler handles http operations on image manifests.
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type imageManifestHandler struct {
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*Context
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Tag string
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}
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// GetImageManifest fetches the image manifest from the storage backend, if it exists.
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func (imh *imageManifestHandler) GetImageManifest(w http.ResponseWriter, r *http.Request) {
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manifests := imh.services.Manifests()
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manifest, err := manifests.Get(imh.Name, imh.Tag)
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if err != nil {
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imh.Errors.Push(v2.ErrorCodeManifestUnknown, err)
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w.WriteHeader(http.StatusNotFound)
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return
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}
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w.Header().Set("Content-Type", "application/json")
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w.Header().Set("Content-Length", fmt.Sprint(len(manifest.Raw)))
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w.Write(manifest.Raw)
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}
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// PutImageManifest validates and stores and image in the registry.
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func (imh *imageManifestHandler) PutImageManifest(w http.ResponseWriter, r *http.Request) {
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manifests := imh.services.Manifests()
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dec := json.NewDecoder(r.Body)
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var manifest manifest.SignedManifest
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if err := dec.Decode(&manifest); err != nil {
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imh.Errors.Push(v2.ErrorCodeManifestInvalid, err)
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w.WriteHeader(http.StatusBadRequest)
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return
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}
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if err := manifests.Put(imh.Name, imh.Tag, &manifest); err != nil {
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// TODO(stevvooe): These error handling switches really need to be
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// handled by an app global mapper.
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switch err := err.(type) {
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case storage.ErrManifestVerification:
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for _, verificationError := range err {
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switch verificationError := verificationError.(type) {
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case storage.ErrUnknownLayer:
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imh.Errors.Push(v2.ErrorCodeBlobUnknown, verificationError.FSLayer)
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case storage.ErrManifestUnverified:
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imh.Errors.Push(v2.ErrorCodeManifestUnverified)
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default:
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if verificationError == digest.ErrDigestInvalidFormat {
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// TODO(stevvooe): We need to really need to move all
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// errors to types. Its much more straightforward.
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imh.Errors.Push(v2.ErrorCodeDigestInvalid)
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} else {
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imh.Errors.PushErr(verificationError)
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}
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}
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}
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default:
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imh.Errors.PushErr(err)
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}
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w.WriteHeader(http.StatusBadRequest)
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return
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}
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}
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// DeleteImageManifest removes the image with the given tag from the registry.
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func (imh *imageManifestHandler) DeleteImageManifest(w http.ResponseWriter, r *http.Request) {
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manifests := imh.services.Manifests()
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if err := manifests.Delete(imh.Name, imh.Tag); err != nil {
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switch err := err.(type) {
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case storage.ErrUnknownManifest:
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imh.Errors.Push(v2.ErrorCodeManifestUnknown, err)
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w.WriteHeader(http.StatusNotFound)
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default:
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imh.Errors.Push(v2.ErrorCodeUnknown, err)
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w.WriteHeader(http.StatusBadRequest)
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}
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return
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}
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w.Header().Set("Content-Length", "0")
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w.WriteHeader(http.StatusAccepted)
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}
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