Add debug tool to image

test/e2e/dbg/main.go

@@ -0,0 +1,102 @@
+/*
+Copyright 2018 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 dbg
+
+import (
+	"encoding/json"
+	"strings"
+
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+
+	"k8s.io/ingress-nginx/test/e2e/framework"
+)
+
+var _ = framework.IngressNginxDescribe("Debug Tool", func() {
+	f := framework.NewDefaultFramework("debug-tool")
+	host := "foo.com"
+
+	BeforeEach(func() {
+		f.NewEchoDeploymentWithReplicas(1)
+	})
+
+	AfterEach(func() {
+	})
+
+	It("should list the backend servers", func() {
+		annotations := map[string]string{}
+
+		ing := framework.NewSingleIngress(host, "/", host, f.IngressController.Namespace, "http-svc", 80, &annotations)
+		f.EnsureIngress(ing)
+
+		f.WaitForNginxConfiguration(func(cfg string) bool {
+			return Expect(cfg).Should(ContainSubstring(host))
+		})
+
+		cmd := "/dbg backends list"
+		output, err := f.ExecIngressPod(cmd)
+		Expect(err).Should(BeNil())
+
+		// Should be 2: the default and the echo deployment
+		numUpstreams := len(strings.Split(strings.Trim(string(output), "\n"), "\n"))
+		Expect(numUpstreams).Should(Equal(2))
+
+	})
+
+	It("should get information for a specific backend server", func() {
+		annotations := map[string]string{}
+
+		ing := framework.NewSingleIngress(host, "/", host, f.IngressController.Namespace, "http-svc", 80, &annotations)
+		f.EnsureIngress(ing)
+
+		f.WaitForNginxConfiguration(func(cfg string) bool {
+			return Expect(cfg).Should(ContainSubstring(host))
+		})
+
+		cmd := "/dbg backends list"
+		output, err := f.ExecIngressPod(cmd)
+		Expect(err).Should(BeNil())
+
+		backends := strings.Split(string(output), "\n")
+		Expect(len(backends)).Should(BeNumerically(">", 0))
+
+		getCmd := "/dbg backends get " + backends[0]
+		output, err = f.ExecIngressPod(getCmd)
+
+		var f map[string]interface{}
+		unmarshalErr := json.Unmarshal([]byte(output), &f)
+		Expect(unmarshalErr).Should(BeNil())
+
+		// Check that the backend we've gotten has the same name as the one we requested
+		Expect(backends[0]).Should(Equal(f["name"].(string)))
+	})
+
+	It("should produce valid JSON for /dbg general", func() {
+		annotations := map[string]string{}
+
+		ing := framework.NewSingleIngress(host, "/", host, f.IngressController.Namespace, "http-svc", 80, &annotations)
+		f.EnsureIngress(ing)
+
+		cmd := "/dbg general"
+		output, err := f.ExecIngressPod(cmd)
+		Expect(err).Should(BeNil())
+
+		var f interface{}
+		unmarshalErr := json.Unmarshal([]byte(output), &f)
+		Expect(unmarshalErr).Should(BeNil())
+	})
+})

test/e2e/e2e.go

@@ -32,6 +32,7 @@ import (
 
 	// tests to run
 	_ "k8s.io/ingress-nginx/test/e2e/annotations"
+	_ "k8s.io/ingress-nginx/test/e2e/dbg"
 	_ "k8s.io/ingress-nginx/test/e2e/defaultbackend"
 	_ "k8s.io/ingress-nginx/test/e2e/gracefulshutdown"
 	_ "k8s.io/ingress-nginx/test/e2e/loadbalance"