Implement updating for semver_major

registry.go

@@ -0,0 +1,50 @@
+package main
+
+import (
+	"fmt"
+	"github.com/heroku/docker-registry-client/registry"
+	d "github.com/opencontainers/go-digest"
+	//"github.com/docker/distribution/digest"
+	//"github.com/docker/distribution/manifest"
+	//"github.com/docker/libtrust"
+)
+
+type Tag struct {
+	Name   string
+	SemVer *SemVerTag
+	Digest d.Digest
+}
+
+func anonymousClient() (*registry.Registry, error) {
+	url      := "https://registry-1.docker.io/"
+	username := "" // anonymous
+	password := "" // anonymous
+
+	return registry.New(url, username, password)
+}
+
+func getDockerRepoTags(hub *registry.Registry, maybe_owner *string, repository string) ([]Tag, error) {
+	if maybe_owner != nil {
+		repository = fmt.Sprintf("%s/%s", *maybe_owner, repository)
+	}
+
+	tags, err := hub.Tags(repository)
+	if err != nil {
+		return nil, err
+	}
+
+	out := []Tag{}
+
+	for _, tag := range tags {
+		digest, err := hub.ManifestDigest(repository, tag)
+		if err != nil {
+			return nil, err
+		}
+
+		svt := parseTagAsSemVer(tag)
+
+		out = append(out, Tag { tag, svt, digest })
+	}
+
+	return out, nil
+}