61 lines
1.3 KiB
Go
61 lines
1.3 KiB
Go
package handlers
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import (
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"encoding/json"
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"net/http"
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"github.com/docker/distribution"
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"github.com/docker/distribution/registry/api/v2"
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"github.com/gorilla/handlers"
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)
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// tagsDispatcher constructs the tags handler api endpoint.
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func tagsDispatcher(ctx *Context, r *http.Request) http.Handler {
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tagsHandler := &tagsHandler{
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Context: ctx,
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}
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return handlers.MethodHandler{
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"GET": http.HandlerFunc(tagsHandler.GetTags),
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}
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}
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// tagsHandler handles requests for lists of tags under a repository name.
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type tagsHandler struct {
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*Context
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}
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type tagsAPIResponse struct {
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Name string `json:"name"`
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Tags []string `json:"tags"`
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}
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// GetTags returns a json list of tags for a specific image name.
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func (th *tagsHandler) GetTags(w http.ResponseWriter, r *http.Request) {
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defer r.Body.Close()
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manifests := th.Repository.Manifests()
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tags, err := manifests.Tags()
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if err != nil {
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switch err := err.(type) {
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case distribution.ErrRepositoryUnknown:
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w.WriteHeader(404)
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th.Errors.Push(v2.ErrorCodeNameUnknown, map[string]string{"name": th.Repository.Name()})
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default:
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th.Errors.PushErr(err)
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}
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return
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}
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w.Header().Set("Content-Type", "application/json; charset=utf-8")
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enc := json.NewEncoder(w)
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if err := enc.Encode(tagsAPIResponse{
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Name: th.Repository.Name(),
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Tags: tags,
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}); err != nil {
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th.Errors.PushErr(err)
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return
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}
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}
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