make addition group registration easier

api/swagger-spec/resourceListing.json

@@ -26,6 +26,14 @@
     "description": "get information of a group"
    },
    {
+    "path": "/apis/apps/v1alpha1",
+    "description": "API at /apis/apps/v1alpha1"
+   },
+   {
+    "path": "/apis/apps",
+    "description": "get information of a group"
+   },
+   {
     "path": "/apis/autoscaling/v1",
     "description": "API at /apis/autoscaling/v1"
    },
@@ -46,27 +54,19 @@
     "description": "get information of a group"
    },
    {
-    "path": "/apis/policy/v1alpha1",
-    "description": "API at /apis/policy/v1alpha1"
-   },
-   {
-    "path": "/apis/policy",
-    "description": "get information of a group"
-   },
-   {
-    "path": "/apis/apps/v1alpha1",
-    "description": "API at /apis/apps/v1alpha1"
+    "path": "/apis/certificates/v1alpha1",
+    "description": "API at /apis/certificates/v1alpha1"
    },
    {
-    "path": "/apis/apps",
+    "path": "/apis/certificates",
     "description": "get information of a group"
    },
    {
-    "path": "/apis/certificates/v1alpha1",
-    "description": "API at /apis/certificates/v1alpha1"
+    "path": "/apis/policy/v1alpha1",
+    "description": "API at /apis/policy/v1alpha1"
    },
    {
-    "path": "/apis/certificates",
+    "path": "/apis/policy",
     "description": "get information of a group"
    },
    {

pkg/genericapiserver/resource_config.go

@@ -27,6 +27,7 @@ type APIResourceConfigSource interface {
 	ResourceEnabled(resource unversioned.GroupVersionResource) bool
 	AllResourcesForVersionEnabled(version unversioned.GroupVersion) bool
 	AnyResourcesForVersionEnabled(version unversioned.GroupVersion) bool
+	AnyResourcesForGroupEnabled(group string) bool
 }
 
 // Specifies the overrides for various API group versions.
@@ -170,3 +171,15 @@ func (o *ResourceConfig) AnyResourcesForVersionEnabled(version unversioned.Group
 
 	return versionOverride.Enable
 }
+
+func (o *ResourceConfig) AnyResourcesForGroupEnabled(group string) bool {
+	for version := range o.GroupVersionResourceConfigs {
+		if version.Group == group {
+			if o.AnyResourcesForVersionEnabled(version) {
+				return true
+			}
+		}
+	}
+
+	return false
+}

pkg/genericapiserver/resource_config_test.go

@@ -97,3 +97,64 @@ func TestDisabledVersion(t *testing.T) {
 	}
 
 }
+
+func TestAnyResourcesForGroupEnabled(t *testing.T) {
+	tests := []struct {
+		name      string
+		creator   func() APIResourceConfigSource
+		testGroup string
+
+		expectedResult bool
+	}{
+		{
+			name: "empty",
+			creator: func() APIResourceConfigSource {
+				return NewResourceConfig()
+			},
+			testGroup: "one",
+
+			expectedResult: false,
+		},
+		{
+			name: "present, but disabled",
+			creator: func() APIResourceConfigSource {
+				ret := NewResourceConfig()
+				ret.DisableVersions(unversioned.GroupVersion{Group: "one", Version: "version1"})
+				return ret
+			},
+			testGroup: "one",
+
+			expectedResult: false,
+		},
+		{
+			name: "present, and one version enabled",
+			creator: func() APIResourceConfigSource {
+				ret := NewResourceConfig()
+				ret.DisableVersions(unversioned.GroupVersion{Group: "one", Version: "version1"})
+				ret.EnableVersions(unversioned.GroupVersion{Group: "one", Version: "version2"})
+				return ret
+			},
+			testGroup: "one",
+
+			expectedResult: true,
+		},
+		{
+			name: "present, and one resource",
+			creator: func() APIResourceConfigSource {
+				ret := NewResourceConfig()
+				ret.DisableVersions(unversioned.GroupVersion{Group: "one", Version: "version1"})
+				ret.EnableResources(unversioned.GroupVersionResource{Group: "one", Version: "version2", Resource: "foo"})
+				return ret
+			},
+			testGroup: "one",
+
+			expectedResult: true,
+		},
+	}
+
+	for _, tc := range tests {
+		if e, a := tc.expectedResult, tc.creator().AnyResourcesForGroupEnabled(tc.testGroup); e != a {
+			t.Errorf("%s: expected %v, got %v", tc.name, e, a)
+		}
+	}
+}

pkg/master/master_test.go

@@ -136,9 +136,14 @@ func newMaster(t *testing.T) (*Master, *etcdtesting.EtcdTestServer, Config, *ass
 // limitedAPIResourceConfigSource only enables the core group, the extensions group, the batch group, and the autoscaling group.
 func limitedAPIResourceConfigSource() *genericapiserver.ResourceConfig {
 	ret := genericapiserver.NewResourceConfig()
-	ret.EnableVersions(apiv1.SchemeGroupVersion, extensionsapiv1beta1.SchemeGroupVersion,
-		batchapiv1.SchemeGroupVersion, batchapiv2alpha1.SchemeGroupVersion,
-		appsapi.SchemeGroupVersion, autoscalingapiv1.SchemeGroupVersion)
+	ret.EnableVersions(
+		apiv1.SchemeGroupVersion,
+		extensionsapiv1beta1.SchemeGroupVersion,
+		batchapiv1.SchemeGroupVersion,
+		batchapiv2alpha1.SchemeGroupVersion,
+		appsapi.SchemeGroupVersion,
+		autoscalingapiv1.SchemeGroupVersion,
+	)
 	return ret
 }
 
@@ -493,7 +498,7 @@ func TestDiscoveryAtAPIS(t *testing.T) {
 		},
 	}
 
-	assert.Equal(3, len(groupList.Groups))
+	assert.Equal(4, len(groupList.Groups))
 	for _, group := range groupList.Groups {
 		if !expectGroupNames.Has(group.Name) {
 			t.Errorf("got unexpected group %s", group.Name)
@@ -520,7 +525,7 @@ func TestDiscoveryAtAPIS(t *testing.T) {
 		t.Fatalf("unexpected error: %v", err)
 	}
 
-	assert.Equal(4, len(groupList.Groups))
+	assert.Equal(5, len(groupList.Groups))
 
 	expectGroupNames.Insert("company.com")
 	expectVersions["company.com"] = []unversioned.GroupVersionForDiscovery{thirdPartyGV}