refactor: move wait for endpoints to new pkg

test/e2e/framework/endpoints/wait.go

@@ -0,0 +1,56 @@
+/*
+Copyright 2019 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.
+*/
+
+/*
+This soak tests places a specified number of pods on each node and then
+repeatedly sends queries to a service running on these pods via
+a serivce
+*/
+
+package endpoints
+
+import (
+	"fmt"
+	"time"
+
+	apierrs "k8s.io/apimachinery/pkg/api/errors"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	clientset "k8s.io/client-go/kubernetes"
+	"k8s.io/kubernetes/test/e2e/framework"
+)
+
+const (
+	// registerTimeout is how long to wait for an endpoint to be registered.
+	registerTimeout = time.Minute
+)
+
+// WaitForEndpoint waits for the specified endpoint to be ready.
+func WaitForEndpoint(c clientset.Interface, ns, name string) error {
+	for t := time.Now(); time.Since(t) < registerTimeout; time.Sleep(framework.Poll) {
+		endpoint, err := c.CoreV1().Endpoints(ns).Get(name, metav1.GetOptions{})
+		if apierrs.IsNotFound(err) {
+			framework.Logf("Endpoint %s/%s is not ready yet", ns, name)
+			continue
+		}
+		framework.ExpectNoError(err, "Failed to get endpoints for %s/%s", ns, name)
+		if len(endpoint.Subsets) == 0 || len(endpoint.Subsets[0].Addresses) == 0 {
+			framework.Logf("Endpoint %s/%s is not ready yet", ns, name)
+			continue
+		}
+		return nil
+	}
+	return fmt.Errorf("failed to get endpoints for %s/%s", ns, name)
+}