Merge pull request #10948 from satnam6502/e2e

End to end test for Kibana liveness

test/e2e/kibana_logging.go

@@ -0,0 +1,96 @@
+/*
+Copyright 2015 The Kubernetes Authors All rights reserved.
+
+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 e2e
+
+import (
+	"time"
+
+	"github.com/GoogleCloudPlatform/kubernetes/pkg/api"
+	"github.com/GoogleCloudPlatform/kubernetes/pkg/fields"
+	"github.com/GoogleCloudPlatform/kubernetes/pkg/labels"
+
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+)
+
+var _ = Describe("Kibana Logging Instances Is Alive", func() {
+	f := NewFramework("kibana-logging")
+
+	BeforeEach(func() {
+		// TODO: For now assume we are only testing cluster logging with Elasticsearch
+		// and Kibana on GCE. Once we are sure that Elasticsearch and Kibana cluster level logging
+		// works for other providers we should widen this scope of this test.
+		SkipUnlessProviderIs("gce")
+	})
+
+	It("should check that the Kibana logging instance is alive", func() {
+		ClusterLevelLoggingWithKibana(f)
+	})
+})
+
+const (
+	kibanaKey   = "k8s-app"
+	kibanaValue = "kibana-logging"
+)
+
+// ClusterLevelLoggingWithKibana is an end to end test that checks to see if Kibana is alive.
+func ClusterLevelLoggingWithKibana(f *Framework) {
+	// graceTime is how long to keep retrying requests for status information.
+	const graceTime = 2 * time.Minute
+
+	// Check for the existence of the Kibana service.
+	By("Checking the Kibana service exists.")
+	s := f.Client.Services(api.NamespaceSystem)
+	// Make a few attempts to connect. This makes the test robust against
+	// being run as the first e2e test just after the e2e cluster has been created.
+	var err error
+	for start := time.Now(); time.Since(start) < graceTime; time.Sleep(5 * time.Second) {
+		if _, err = s.Get("kibana-logging"); err == nil {
+			break
+		}
+		Logf("Attempt to check for the existence of the Kibana service failed after %v", time.Since(start))
+	}
+	Expect(err).NotTo(HaveOccurred())
+
+	// Wait for the Kibana pod(s) to enter the running state.
+	By("Checking to make sure the Kibana pods are running")
+	label := labels.SelectorFromSet(labels.Set(map[string]string{kibanaKey: kibanaValue}))
+	pods, err := f.Client.Pods(api.NamespaceSystem).List(label, fields.Everything())
+	Expect(err).NotTo(HaveOccurred())
+	for _, pod := range pods.Items {
+		err = waitForPodRunningInNamespace(f.Client, pod.Name, api.NamespaceSystem)
+		Expect(err).NotTo(HaveOccurred())
+	}
+
+	By("Checking to make sure we get a response from the Kibana UI.")
+	err = nil
+	for start := time.Now(); time.Since(start) < graceTime; time.Sleep(5 * time.Second) {
+		// Query against the root URL for Kibana.
+		_, err = f.Client.Get().
+			Namespace(api.NamespaceSystem).
+			Prefix("proxy").
+			Resource("services").
+			Name("kibana-logging").
+			DoRaw()
+		if err != nil {
+			Logf("After %v proxy call to kibana-logging failed: %v", time.Since(start), err)
+			continue
+		}
+		break
+	}
+	Expect(err).NotTo(HaveOccurred())
+}