Remove unnecessary func parameter, add mirror endpoint test

Signed-off-by: Aidan Hobson Sayers <aidanhs@cantab.net>

docs/registry_test.go

@@ -677,6 +677,35 @@ func TestNewIndexInfo(t *testing.T) {
 	testIndexInfo(config, expectedIndexInfos)
 }
 
+func TestMirrorEndpointLookup(t *testing.T) {
+	containsMirror := func(endpoints []APIEndpoint) bool {
+		for _, pe := range endpoints {
+			if pe.URL == "my.mirror" {
+				return true
+			}
+		}
+		return false
+	}
+	s := Service{Config: makeServiceConfig([]string{"my.mirror"}, nil)}
+	imageName := IndexName + "/test/image"
+
+	pushAPIEndpoints, err := s.LookupPushEndpoints(imageName)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if containsMirror(pushAPIEndpoints) {
+		t.Fatal("Push endpoint should not contain mirror")
+	}
+
+	pullAPIEndpoints, err := s.LookupPullEndpoints(imageName)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !containsMirror(pullAPIEndpoints) {
+		t.Fatal("Pull endpoint should contain mirror")
+	}
+}
+
 func TestPushRegistryTag(t *testing.T) {
 	r := spawnTestRegistrySession(t)
 	err := r.PushRegistryTag("foo42/bar", imageID, "stable", makeURL("/v1/"))

docs/service.go

@@ -113,36 +113,42 @@ func (s *Service) tlsConfigForMirror(mirror string) (*tls.Config, error) {
 // It gives preference to v2 endpoints over v1, mirrors over the actual
 // registry, and HTTPS over plain HTTP.
 func (s *Service) LookupPullEndpoints(repoName string) (endpoints []APIEndpoint, err error) {
-	return s.lookupEndpoints(repoName, false)
+	return s.lookupEndpoints(repoName)
 }
 
 // LookupPushEndpoints creates an list of endpoints to try to push to, in order of preference.
 // It gives preference to v2 endpoints over v1, and HTTPS over plain HTTP.
 // Mirrors are not included.
 func (s *Service) LookupPushEndpoints(repoName string) (endpoints []APIEndpoint, err error) {
-	return s.lookupEndpoints(repoName, true)
+	allEndpoints, err := s.lookupEndpoints(repoName)
+	if err == nil {
+		for _, endpoint := range allEndpoints {
+			if !endpoint.Mirror {
+				endpoints = append(endpoints, endpoint)
+			}
+		}
+	}
+	return endpoints, err
 }
 
-func (s *Service) lookupEndpoints(repoName string, isPush bool) (endpoints []APIEndpoint, err error) {
+func (s *Service) lookupEndpoints(repoName string) (endpoints []APIEndpoint, err error) {
 	var cfg = tlsconfig.ServerDefault
 	tlsConfig := &cfg
 	if strings.HasPrefix(repoName, DefaultNamespace+"/") {
-		if !isPush {
+		// v2 mirrors
-			// v2 mirrors for pull only
+		for _, mirror := range s.Config.Mirrors {
-			for _, mirror := range s.Config.Mirrors {
+			mirrorTLSConfig, err := s.tlsConfigForMirror(mirror)
-				mirrorTLSConfig, err := s.tlsConfigForMirror(mirror)
+			if err != nil {
-				if err != nil {
+				return nil, err
-					return nil, err
-				}
-				endpoints = append(endpoints, APIEndpoint{
-					URL: mirror,
-					// guess mirrors are v2
-					Version:      APIVersion2,
-					Mirror:       true,
-					TrimHostname: true,
-					TLSConfig:    mirrorTLSConfig,
-				})
 			}
+			endpoints = append(endpoints, APIEndpoint{
+				URL: mirror,
+				// guess mirrors are v2
+				Version:      APIVersion2,
+				Mirror:       true,
+				TrimHostname: true,
+				TLSConfig:    mirrorTLSConfig,
+			})
 		}
 		// v2 registry
 		endpoints = append(endpoints, APIEndpoint{