d08f0edcf1
Routes and errors are now all referenced from a single v2 package. This packages exports are acceptable for use in the server side as well as integration into docker core.
113 lines
3.5 KiB
Go
113 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/docker-registry/api/v2"
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"github.com/docker/docker-registry/digest"
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"github.com/docker/docker-registry/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 storage.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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