chore(e2e): add test for Prometheus trait apache#1547

e2e/common/prometheus_test.go

@@ -0,0 +1,95 @@
+// +build integration
+
+// To enable compilation of this file in Goland, go to "Settings -> Go -> Vendoring & Build Tags -> Custom Tags" and add "integration"
+
+/*
+Licensed to the Apache Software Foundation (ASF) under one or more
+contributor license agreements.  See the NOTICE file distributed with
+this work for additional information regarding copyright ownership.
+The ASF licenses this file to You 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 common
+
+import (
+	"fmt"
+	"testing"
+
+	. "github.com/apache/camel-k/e2e/support"
+	camelv1 "github.com/apache/camel-k/pkg/apis/camel/v1"
+	"github.com/apache/camel-k/pkg/util/openshift"
+
+	. "github.com/onsi/gomega"
+	"github.com/stretchr/testify/assert"
+
+	monitoringv1 "github.com/prometheus-operator/prometheus-operator/pkg/apis/monitoring/v1"
+	v1 "k8s.io/api/core/v1"
+	k8serrors "k8s.io/apimachinery/pkg/api/errors"
+	k8sclient "sigs.k8s.io/controller-runtime/pkg/client"
+)
+
+func TestPrometheusTrait(t *testing.T) {
+	WithNewTestNamespace(t, func(ns string) {
+		ocp, err := openshift.IsOpenShift(TestClient)
+		assert.Nil(t, err)
+
+		Expect(Kamel("install", "-n", ns).Execute()).Should(BeNil())
+
+		Expect(Kamel("run", "-n", ns, "files/Java.java", "-t", "prometheus.enabled=true").Execute()).Should(BeNil())
+		Eventually(IntegrationPodPhase(ns, "java"), TestTimeoutLong).Should(Equal(v1.PodRunning))
+		Eventually(IntegrationCondition(ns, "java", camelv1.IntegrationConditionReady), TestTimeoutShort).Should(Equal(v1.ConditionTrue))
+		Eventually(IntegrationLogs(ns, "java"), TestTimeoutShort).Should(ContainSubstring("Magicstring!"))
+
+		t.Run("Metrics endpoint works", func(t *testing.T) {
+			pod := IntegrationPod(ns, "java")
+			response, err := TestClient.CoreV1().RESTClient().Get().
+				AbsPath(fmt.Sprintf("/api/v1/namespaces/%s/pods/%s/proxy/metrics", ns, pod().Name)).DoRaw(TestContext)
+			if err != nil {
+				assert.Fail(t, err.Error())
+			}
+			assert.Contains(t, string(response), "camel.route.exchanges.total")
+		})
+
+		t.Run("Service is created", func(t *testing.T) {
+			// service name is "<integration name>-prometheus"
+			service := Service(ns, "java-prometheus")
+			Eventually(service, TestTimeoutShort).ShouldNot(BeNil())
+		})
+
+		if ocp {
+			t.Run("Service Monitor is created on OpenShift", func(t *testing.T) {
+				sm := serviceMonitor(ns, "java")
+				Eventually(sm, TestTimeoutShort).ShouldNot(BeNil())
+			})
+		}
+
+		Expect(Kamel("delete", "--all", "-n", ns).Execute()).Should(BeNil())
+	})
+}
+
+func serviceMonitor(ns string, name string) func() *monitoringv1.ServiceMonitor {
+	return func() *monitoringv1.ServiceMonitor {
+		sm := monitoringv1.ServiceMonitor{}
+		key := k8sclient.ObjectKey{
+			Namespace: ns,
+			Name:      name,
+		}
+		err := TestClient.Get(TestContext, key, &sm)
+		if err != nil && k8serrors.IsNotFound(err) {
+			return nil
+		} else if err != nil {
+			panic(err)
+		}
+		return &sm
+	}
+}