Refactoring of kubernetes informers and local caches

internal/ingress/controller/store/endpoint.go

@@ -0,0 +1,40 @@
+/*
+Copyright 2015 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package store
+
+import (
+	"fmt"
+
+	apiv1 "k8s.io/api/core/v1"
+	"k8s.io/client-go/tools/cache"
+)
+
+// EndpointLister makes a Store that lists Endpoints.
+type EndpointLister struct {
+	cache.Store
+}
+
+// GetServiceEndpoints returns the endpoints of a service, matched on service name.
+func (s *EndpointLister) GetServiceEndpoints(svc *apiv1.Service) (*apiv1.Endpoints, error) {
+	for _, m := range s.Store.List() {
+		ep := m.(*apiv1.Endpoints)
+		if svc.Name == ep.Name && svc.Namespace == ep.Namespace {
+			return ep, nil
+		}
+	}
+	return nil, fmt.Errorf("could not find endpoints for service: %v", svc.Name)
+}