The method (Registry).Repository may now return an error. This is too allow certain implementationt to validate the name or opt to not return a repository under certain conditions. In conjunction with this change, error declarations have been moved into a single file in the distribution package. Several error declarations that had remained in the storage package have been moved into distribution, as well. The declarations for Layer and LayerUpload have also been moved into the main registry file, as a result. Signed-off-by: Stephen J Day <stephen.day@docker.com>
60 lines
1.3 KiB
Go
60 lines
1.3 KiB
Go
package handlers
|
|
|
|
import (
|
|
"encoding/json"
|
|
"net/http"
|
|
|
|
"github.com/docker/distribution"
|
|
"github.com/docker/distribution/registry/api/v2"
|
|
"github.com/gorilla/handlers"
|
|
)
|
|
|
|
// tagsDispatcher constructs the tags handler api endpoint.
|
|
func tagsDispatcher(ctx *Context, r *http.Request) http.Handler {
|
|
tagsHandler := &tagsHandler{
|
|
Context: ctx,
|
|
}
|
|
|
|
return handlers.MethodHandler{
|
|
"GET": http.HandlerFunc(tagsHandler.GetTags),
|
|
}
|
|
}
|
|
|
|
// tagsHandler handles requests for lists of tags under a repository name.
|
|
type tagsHandler struct {
|
|
*Context
|
|
}
|
|
|
|
type tagsAPIResponse struct {
|
|
Name string `json:"name"`
|
|
Tags []string `json:"tags"`
|
|
}
|
|
|
|
// GetTags returns a json list of tags for a specific image name.
|
|
func (th *tagsHandler) GetTags(w http.ResponseWriter, r *http.Request) {
|
|
defer r.Body.Close()
|
|
manifests := th.Repository.Manifests()
|
|
|
|
tags, err := manifests.Tags()
|
|
if err != nil {
|
|
switch err := err.(type) {
|
|
case distribution.ErrRepositoryUnknown:
|
|
w.WriteHeader(404)
|
|
th.Errors.Push(v2.ErrorCodeNameUnknown, map[string]string{"name": th.Repository.Name()})
|
|
default:
|
|
th.Errors.PushErr(err)
|
|
}
|
|
return
|
|
}
|
|
|
|
w.Header().Set("Content-Type", "application/json; charset=utf-8")
|
|
|
|
enc := json.NewEncoder(w)
|
|
if err := enc.Encode(tagsAPIResponse{
|
|
Name: th.Repository.Name(),
|
|
Tags: tags,
|
|
}); err != nil {
|
|
th.Errors.PushErr(err)
|
|
return
|
|
}
|
|
}
|