/* Copyright The Helm 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 kube import ( "bytes" "io" "io/ioutil" "net/http" "strings" "testing" v1 "k8s.io/api/core/v1" metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" "k8s.io/apimachinery/pkg/runtime" "k8s.io/cli-runtime/pkg/resource" "k8s.io/client-go/kubernetes/scheme" "k8s.io/client-go/rest/fake" cmdtesting "k8s.io/kubectl/pkg/cmd/testing" ) var unstructuredSerializer = resource.UnstructuredPlusDefaultContentConfig().NegotiatedSerializer var codec = scheme.Codecs.LegacyCodec(scheme.Scheme.PrioritizedVersionsAllGroups()...) func objBody(obj runtime.Object) io.ReadCloser { return ioutil.NopCloser(bytes.NewReader([]byte(runtime.EncodeOrDie(codec, obj)))) } func newPod(name string) v1.Pod { return newPodWithStatus(name, v1.PodStatus{}, "") } func newPodWithStatus(name string, status v1.PodStatus, namespace string) v1.Pod { ns := v1.NamespaceDefault if namespace != "" { ns = namespace } return v1.Pod{ ObjectMeta: metav1.ObjectMeta{ Name: name, Namespace: ns, SelfLink: "/api/v1/namespaces/default/pods/" + name, }, Spec: v1.PodSpec{ Containers: []v1.Container{{ Name: "app:v4", Image: "abc/app:v4", Ports: []v1.ContainerPort{{Name: "http", ContainerPort: 80}}, }}, }, Status: status, } } func newPodList(names ...string) v1.PodList { var list v1.PodList for _, name := range names { list.Items = append(list.Items, newPod(name)) } return list } func notFoundBody() *metav1.Status { return &metav1.Status{ Code: http.StatusNotFound, Status: metav1.StatusFailure, Reason: metav1.StatusReasonNotFound, Message: " \"\" not found", Details: &metav1.StatusDetails{}, } } func newResponse(code int, obj runtime.Object) (*http.Response, error) { header := http.Header{} header.Set("Content-Type", runtime.ContentTypeJSON) body := ioutil.NopCloser(bytes.NewReader([]byte(runtime.EncodeOrDie(codec, obj)))) return &http.Response{StatusCode: code, Header: header, Body: body}, nil } func newTestClient() *Client { return &Client{ Factory: cmdtesting.NewTestFactory().WithNamespace("default"), Log: nopLogger, } } func TestUpdate(t *testing.T) { listA := newPodList("starfish", "otter", "squid") listB := newPodList("starfish", "otter", "dolphin") listC := newPodList("starfish", "otter", "dolphin") listB.Items[0].Spec.Containers[0].Ports = []v1.ContainerPort{{Name: "https", ContainerPort: 443}} listC.Items[0].Spec.Containers[0].Ports = []v1.ContainerPort{{Name: "https", ContainerPort: 443}} var actions []string c := newTestClient() c.Factory.(*cmdtesting.TestFactory).UnstructuredClient = &fake.RESTClient{ NegotiatedSerializer: unstructuredSerializer, Client: fake.CreateHTTPClient(func(req *http.Request) (*http.Response, error) { p, m := req.URL.Path, req.Method actions = append(actions, p+":"+m) t.Logf("got request %s %s", p, m) switch { case p == "/namespaces/default/pods/starfish" && m == "GET": return newResponse(200, &listA.Items[0]) case p == "/namespaces/default/pods/otter" && m == "GET": return newResponse(200, &listA.Items[1]) case p == "/namespaces/default/pods/otter" && m == "PATCH": data, err := ioutil.ReadAll(req.Body) if err != nil { t.Fatalf("could not dump request: %s", err) } req.Body.Close() expected := `{}` if string(data) != expected { t.Errorf("expected patch\n%s\ngot\n%s", expected, string(data)) } return newResponse(200, &listB.Items[0]) case p == "/namespaces/default/pods/dolphin" && m == "GET": return newResponse(404, notFoundBody()) case p == "/namespaces/default/pods/starfish" && m == "PATCH": data, err := ioutil.ReadAll(req.Body) if err != nil { t.Fatalf("could not dump request: %s", err) } req.Body.Close() expected := `{"spec":{"$setElementOrder/containers":[{"name":"app:v4"}],"containers":[{"$setElementOrder/ports":[{"containerPort":443}],"name":"app:v4","ports":[{"containerPort":443,"name":"https"},{"$patch":"delete","containerPort":80}]}]}}` if string(data) != expected { t.Errorf("expected patch\n%s\ngot\n%s", expected, string(data)) } return newResponse(200, &listB.Items[0]) case p == "/namespaces/default/pods" && m == "POST": return newResponse(200, &listB.Items[1]) case p == "/namespaces/default/pods/squid" && m == "DELETE": return newResponse(200, &listB.Items[1]) case p == "/namespaces/default/pods/squid" && m == "GET": return newResponse(200, &listB.Items[2]) default: t.Fatalf("unexpected request: %s %s", req.Method, req.URL.Path) return nil, nil } }), } first, err := c.Build(objBody(&listA), false) if err != nil { t.Fatal(err) } second, err := c.Build(objBody(&listB), false) if err != nil { t.Fatal(err) } result, err := c.Update(first, second, false) if err != nil { t.Fatal(err) } if len(result.Created) != 1 { t.Errorf("expected 1 resource created, got %d", len(result.Created)) } if len(result.Updated) != 2 { t.Errorf("expected 2 resource updated, got %d", len(result.Updated)) } if len(result.Deleted) != 1 { t.Errorf("expected 1 resource deleted, got %d", len(result.Deleted)) } // TODO: Find a way to test methods that use Client Set // Test with a wait // if err := c.Update("test", objBody(codec, &listB), objBody(codec, &listC), false, 300, true); err != nil { // t.Fatal(err) // } // Test with a wait should fail // TODO: A way to make this not based off of an extremely short timeout? // if err := c.Update("test", objBody(codec, &listC), objBody(codec, &listA), false, 2, true); err != nil { // t.Fatal(err) // } expectedActions := []string{ "/namespaces/default/pods/starfish:GET", "/namespaces/default/pods/starfish:GET", "/namespaces/default/pods/starfish:PATCH", "/namespaces/default/pods/otter:GET", "/namespaces/default/pods/otter:GET", "/namespaces/default/pods/otter:GET", "/namespaces/default/pods/dolphin:GET", "/namespaces/default/pods:POST", "/namespaces/default/pods/squid:GET", "/namespaces/default/pods/squid:DELETE", } if len(expectedActions) != len(actions) { t.Fatalf("unexpected number of requests, expected %d, got %d", len(expectedActions), len(actions)) } for k, v := range expectedActions { if actions[k] != v { t.Errorf("expected %s request got %s", v, actions[k]) } } } func TestBuild(t *testing.T) { tests := []struct { name string namespace string reader io.Reader count int err bool }{ { name: "Valid input", namespace: "test", reader: strings.NewReader(guestbookManifest), count: 6, }, { name: "Valid input, deploying resources into different namespaces", namespace: "test", reader: strings.NewReader(namespacedGuestbookManifest), count: 1, }, } c := newTestClient() for _, tt := range tests { t.Run(tt.name, func(t *testing.T) { // Test for an invalid manifest infos, err := c.Build(tt.reader, false) if err != nil && !tt.err { t.Errorf("Got error message when no error should have occurred: %v", err) } else if err != nil && strings.Contains(err.Error(), "--validate=false") { t.Error("error message was not scrubbed") } if len(infos) != tt.count { t.Errorf("expected %d result objects, got %d", tt.count, len(infos)) } }) } } func TestPerform(t *testing.T) { tests := []struct { name string reader io.Reader count int err bool errMessage string }{ { name: "Valid input", reader: strings.NewReader(guestbookManifest), count: 6, }, { name: "Empty manifests", reader: strings.NewReader(""), err: true, errMessage: "no objects visited", }, } for _, tt := range tests { t.Run(tt.name, func(t *testing.T) { results := []*resource.Info{} fn := func(info *resource.Info) error { results = append(results, info) return nil } c := newTestClient() infos, err := c.Build(tt.reader, false) if err != nil && err.Error() != tt.errMessage { t.Errorf("Error while building manifests: %v", err) } err = perform(infos, fn) if (err != nil) != tt.err { t.Errorf("expected error: %v, got %v", tt.err, err) } if err != nil && err.Error() != tt.errMessage { t.Errorf("expected error message: %v, got %v", tt.errMessage, err) } if len(results) != tt.count { t.Errorf("expected %d result objects, got %d", tt.count, len(results)) } }) } } func TestReal(t *testing.T) { t.Skip("This is a live test, comment this line to run") c := New(nil) resources, err := c.Build(strings.NewReader(guestbookManifest), false) if err != nil { t.Fatal(err) } if _, err := c.Create(resources); err != nil { t.Fatal(err) } testSvcEndpointManifest := testServiceManifest + "\n---\n" + testEndpointManifest c = New(nil) resources, err = c.Build(strings.NewReader(testSvcEndpointManifest), false) if err != nil { t.Fatal(err) } if _, err := c.Create(resources); err != nil { t.Fatal(err) } resources, err = c.Build(strings.NewReader(testEndpointManifest), false) if err != nil { t.Fatal(err) } if _, errs := c.Delete(resources); errs != nil { t.Fatal(errs) } resources, err = c.Build(strings.NewReader(testSvcEndpointManifest), false) if err != nil { t.Fatal(err) } // ensures that delete does not fail if a resource is not found if _, errs := c.Delete(resources); errs != nil { t.Fatal(errs) } } const testServiceManifest = ` kind: Service apiVersion: v1 metadata: name: my-service spec: selector: app: myapp ports: - port: 80 protocol: TCP targetPort: 9376 ` const testEndpointManifest = ` kind: Endpoints apiVersion: v1 metadata: name: my-service subsets: - addresses: - ip: "1.2.3.4" ports: - port: 9376 ` const guestbookManifest = ` apiVersion: v1 kind: Service metadata: name: redis-master labels: app: redis tier: backend role: master spec: ports: - port: 6379 targetPort: 6379 selector: app: redis tier: backend role: master --- apiVersion: extensions/v1beta1 kind: Deployment metadata: name: redis-master spec: replicas: 1 template: metadata: labels: app: redis role: master tier: backend spec: containers: - name: master image: k8s.gcr.io/redis:e2e # or just image: redis resources: requests: cpu: 100m memory: 100Mi ports: - containerPort: 6379 --- apiVersion: v1 kind: Service metadata: name: redis-slave labels: app: redis tier: backend role: slave spec: ports: # the port that this service should serve on - port: 6379 selector: app: redis tier: backend role: slave --- apiVersion: extensions/v1beta1 kind: Deployment metadata: name: redis-slave spec: replicas: 2 template: metadata: labels: app: redis role: slave tier: backend spec: containers: - name: slave image: gcr.io/google_samples/gb-redisslave:v1 resources: requests: cpu: 100m memory: 100Mi env: - name: GET_HOSTS_FROM value: dns ports: - containerPort: 6379 --- apiVersion: v1 kind: Service metadata: name: frontend labels: app: guestbook tier: frontend spec: ports: - port: 80 selector: app: guestbook tier: frontend --- apiVersion: extensions/v1beta1 kind: Deployment metadata: name: frontend spec: replicas: 3 template: metadata: labels: app: guestbook tier: frontend spec: containers: - name: php-redis image: gcr.io/google-samples/gb-frontend:v4 resources: requests: cpu: 100m memory: 100Mi env: - name: GET_HOSTS_FROM value: dns ports: - containerPort: 80 ` const namespacedGuestbookManifest = ` apiVersion: extensions/v1beta1 kind: Deployment metadata: name: frontend namespace: guestbook spec: replicas: 3 template: metadata: labels: app: guestbook tier: frontend spec: containers: - name: php-redis image: gcr.io/google-samples/gb-frontend:v4 resources: requests: cpu: 100m memory: 100Mi env: - name: GET_HOSTS_FROM value: dns ports: - containerPort: 80 `