vendor files

vendor/k8s.io/kubernetes/test/e2e/upgrades/services.go

@@ -0,0 +1,112 @@
+/*
+Copyright 2017 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 upgrades
+
+import (
+	"k8s.io/api/core/v1"
+	"k8s.io/apimachinery/pkg/util/wait"
+	"k8s.io/kubernetes/test/e2e/framework"
+
+	. "github.com/onsi/ginkgo"
+)
+
+// ServiceUpgradeTest tests that a service is available before and
+// after a cluster upgrade. During a master-only upgrade, it will test
+// that a service remains available during the upgrade.
+type ServiceUpgradeTest struct {
+	jig          *framework.ServiceTestJig
+	tcpService   *v1.Service
+	tcpIngressIP string
+	svcPort      int
+}
+
+func (ServiceUpgradeTest) Name() string { return "service-upgrade" }
+
+func shouldTestPDBs() bool { return framework.ProviderIs("gce", "gke") }
+
+// Setup creates a service with a load balancer and makes sure it's reachable.
+func (t *ServiceUpgradeTest) Setup(f *framework.Framework) {
+	serviceName := "service-test"
+	jig := framework.NewServiceTestJig(f.ClientSet, serviceName)
+
+	ns := f.Namespace
+
+	By("creating a TCP service " + serviceName + " with type=LoadBalancer in namespace " + ns.Name)
+	tcpService := jig.CreateTCPServiceOrFail(ns.Name, func(s *v1.Service) {
+		s.Spec.Type = v1.ServiceTypeLoadBalancer
+	})
+	tcpService = jig.WaitForLoadBalancerOrFail(ns.Name, tcpService.Name, framework.LoadBalancerCreateTimeoutDefault)
+	jig.SanityCheckService(tcpService, v1.ServiceTypeLoadBalancer)
+
+	// Get info to hit it with
+	tcpIngressIP := framework.GetIngressPoint(&tcpService.Status.LoadBalancer.Ingress[0])
+	svcPort := int(tcpService.Spec.Ports[0].Port)
+
+	By("creating pod to be part of service " + serviceName)
+	rc := jig.RunOrFail(ns.Name, jig.AddRCAntiAffinity)
+
+	if shouldTestPDBs() {
+		By("creating a PodDisruptionBudget to cover the ReplicationController")
+		jig.CreatePDBOrFail(ns.Name, rc)
+	}
+
+	// Hit it once before considering ourselves ready
+	By("hitting the pod through the service's LoadBalancer")
+	jig.TestReachableHTTP(tcpIngressIP, svcPort, framework.LoadBalancerLagTimeoutDefault)
+
+	t.jig = jig
+	t.tcpService = tcpService
+	t.tcpIngressIP = tcpIngressIP
+	t.svcPort = svcPort
+}
+
+// Test runs a connectivity check to the service.
+func (t *ServiceUpgradeTest) Test(f *framework.Framework, done <-chan struct{}, upgrade UpgradeType) {
+	switch upgrade {
+	case MasterUpgrade:
+		t.test(f, done, true)
+	case NodeUpgrade:
+		// Node upgrades should test during disruption only on GCE/GKE for now.
+		t.test(f, done, shouldTestPDBs())
+	default:
+		t.test(f, done, false)
+	}
+}
+
+// Teardown cleans up any remaining resources.
+func (t *ServiceUpgradeTest) Teardown(f *framework.Framework) {
+	// rely on the namespace deletion to clean up everything
+}
+
+func (t *ServiceUpgradeTest) test(f *framework.Framework, done <-chan struct{}, testDuringDisruption bool) {
+	if testDuringDisruption {
+		// Continuous validation
+		By("continuously hitting the pod through the service's LoadBalancer")
+		wait.Until(func() {
+			t.jig.TestReachableHTTP(t.tcpIngressIP, t.svcPort, framework.LoadBalancerLagTimeoutDefault)
+		}, framework.Poll, done)
+	} else {
+		// Block until upgrade is done
+		By("waiting for upgrade to finish without checking if service remains up")
+		<-done
+	}
+
+	// Sanity check and hit it once more
+	By("hitting the pod through the service's LoadBalancer")
+	t.jig.TestReachableHTTP(t.tcpIngressIP, t.svcPort, framework.LoadBalancerLagTimeoutDefault)
+	t.jig.SanityCheckService(t.tcpService, v1.ServiceTypeLoadBalancer)
+}