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helm/pkg/kube/client_test.go

597 lines
15 KiB

/*
Copyright 2016 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 kube
import (
"bytes"
"encoding/json"
"io"
"io/ioutil"
"net/http"
"strings"
"testing"
"time"
"k8s.io/kubernetes/pkg/api"
"k8s.io/kubernetes/pkg/api/meta"
"k8s.io/kubernetes/pkg/api/testapi"
"k8s.io/kubernetes/pkg/api/unversioned"
"k8s.io/kubernetes/pkg/api/validation"
"k8s.io/kubernetes/pkg/client/restclient/fake"
"k8s.io/kubernetes/pkg/kubectl"
cmdtesting "k8s.io/kubernetes/pkg/kubectl/cmd/testing"
cmdutil "k8s.io/kubernetes/pkg/kubectl/cmd/util"
"k8s.io/kubernetes/pkg/kubectl/resource"
"k8s.io/kubernetes/pkg/runtime"
"k8s.io/kubernetes/pkg/watch"
watchjson "k8s.io/kubernetes/pkg/watch/json"
)
func objBody(codec runtime.Codec, obj runtime.Object) io.ReadCloser {
return ioutil.NopCloser(bytes.NewReader([]byte(runtime.EncodeOrDie(codec, obj))))
}
func newPod(name string) api.Pod {
return newPodWithStatus(name, api.PodStatus{}, "")
}
func newPodWithStatus(name string, status api.PodStatus, namespace string) api.Pod {
ns := api.NamespaceDefault
if namespace != "" {
ns = namespace
}
return api.Pod{
ObjectMeta: api.ObjectMeta{
Name: name,
Namespace: ns,
},
Spec: api.PodSpec{
Containers: []api.Container{{
Name: "app:v4",
Image: "abc/app:v4",
Ports: []api.ContainerPort{{Name: "http", ContainerPort: 80}},
}},
},
Status: status,
}
}
func newPodList(names ...string) api.PodList {
var list api.PodList
for _, name := range names {
list.Items = append(list.Items, newPod(name))
}
return list
}
func notFoundBody() *unversioned.Status {
return &unversioned.Status{
Code: http.StatusNotFound,
Status: unversioned.StatusFailure,
Reason: unversioned.StatusReasonNotFound,
Message: " \"\" not found",
Details: &unversioned.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(testapi.Default.Codec(), obj))))
return &http.Response{StatusCode: code, Header: header, Body: body}, nil
}
type fakeReaper struct {
name string
}
func (r *fakeReaper) Stop(namespace, name string, timeout time.Duration, gracePeriod *api.DeleteOptions) error {
r.name = name
return nil
}
type fakeReaperFactory struct {
cmdutil.Factory
reaper kubectl.Reaper
}
func (f *fakeReaperFactory) Reaper(mapping *meta.RESTMapping) (kubectl.Reaper, error) {
return f.reaper, nil
}
func newEventResponse(code int, e *watch.Event) (*http.Response, error) {
dispatchedEvent, err := encodeAndMarshalEvent(e)
if err != nil {
return nil, err
}
header := http.Header{}
header.Set("Content-Type", runtime.ContentTypeJSON)
body := ioutil.NopCloser(bytes.NewReader(dispatchedEvent))
return &http.Response{StatusCode: 200, Header: header, Body: body}, nil
}
func encodeAndMarshalEvent(e *watch.Event) ([]byte, error) {
encodedEvent, err := watchjson.Object(testapi.Default.Codec(), e)
if err != nil {
return nil, err
}
marshaledEvent, err := json.Marshal(encodedEvent)
if err != nil {
return nil, err
}
return marshaledEvent, nil
}
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 = []api.ContainerPort{{Name: "https", ContainerPort: 443}}
listC.Items[0].Spec.Containers[0].Ports = []api.ContainerPort{{Name: "https", ContainerPort: 443}}
var actions []string
f, tf, codec, ns := cmdtesting.NewAPIFactory()
tf.Client = &fake.RESTClient{
NegotiatedSerializer: ns,
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/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":{"containers":[{"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])
default:
t.Fatalf("unexpected request: %s %s", req.Method, req.URL.Path)
return nil, nil
}
}),
}
reaper := &fakeReaper{}
rf := &fakeReaperFactory{Factory: f, reaper: reaper}
c := &Client{Factory: rf}
if err := c.Update(api.NamespaceDefault, objBody(codec, &listA), objBody(codec, &listB), false, 0, false); err != nil {
t.Fatal(err)
}
// 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:PATCH",
"/namespaces/default/pods/otter:GET",
"/namespaces/default/pods/otter:GET",
"/namespaces/default/pods/dolphin:GET",
"/namespaces/default/pods:POST",
}
if len(expectedActions) != len(actions) {
t.Errorf("unexpected number of requests, expected %d, got %d", len(expectedActions), len(actions))
return
}
for k, v := range expectedActions {
if actions[k] != v {
t.Errorf("expected %s request got %s", v, actions[k])
}
}
if reaper.name != "squid" {
t.Errorf("unexpected reaper: %#v", reaper)
}
}
func TestBuild(t *testing.T) {
tests := []struct {
name string
namespace string
reader io.Reader
count int
swaggerFile string
err bool
errMessage string
}{
{
name: "Valid input",
namespace: "test",
reader: strings.NewReader(guestbookManifest),
count: 6,
}, {
name: "Invalid schema",
namespace: "test",
reader: strings.NewReader(testInvalidServiceManifest),
swaggerFile: "../../vendor/k8s.io/kubernetes/api/swagger-spec/" + testapi.Default.GroupVersion().Version + ".json",
err: true,
errMessage: `error validating "": error validating data: expected type int, for field spec.ports[0].port, got string`,
},
}
for _, tt := range tests {
f, tf, _, _ := cmdtesting.NewAPIFactory()
c := &Client{Factory: f}
if tt.swaggerFile != "" {
data, err := ioutil.ReadFile(tt.swaggerFile)
if err != nil {
t.Fatalf("could not read swagger spec: %s", err)
}
validator, err := validation.NewSwaggerSchemaFromBytes(data, nil)
if err != nil {
t.Fatalf("could not load swagger spec: %s", err)
}
tf.Validator = validator
}
// Test for an invalid manifest
infos, err := c.Build(tt.namespace, tt.reader)
if err != nil && err.Error() != tt.errMessage {
t.Errorf("%q. expected error message: %v, got %v", tt.name, tt.errMessage, err)
} else if err != nil && !tt.err {
t.Errorf("%q. Got error message when no error should have occurred: %v, got %v", tt.name, tt.errMessage, err)
}
if len(infos) != tt.count {
t.Errorf("%q. expected %d result objects, got %d", tt.name, tt.count, len(infos))
}
}
}
func TestPerform(t *testing.T) {
tests := []struct {
name string
namespace string
reader io.Reader
count int
swaggerFile string
err bool
errMessage string
}{
{
name: "Valid input",
namespace: "test",
reader: strings.NewReader(guestbookManifest),
count: 6,
}, {
name: "Empty manifests",
namespace: "test",
reader: strings.NewReader(""),
err: true,
errMessage: "no objects visited",
},
}
for _, tt := range tests {
results := []*resource.Info{}
fn := func(info *resource.Info) error {
results = append(results, info)
if info.Namespace != tt.namespace {
t.Errorf("%q. expected namespace to be '%s', got %s", tt.name, tt.namespace, info.Namespace)
}
return nil
}
f, tf, _, _ := cmdtesting.NewAPIFactory()
c := &Client{Factory: f}
if tt.swaggerFile != "" {
data, err := ioutil.ReadFile(tt.swaggerFile)
if err != nil {
t.Fatalf("could not read swagger spec: %s", err)
}
validator, err := validation.NewSwaggerSchemaFromBytes(data, nil)
if err != nil {
t.Fatalf("could not load swagger spec: %s", err)
}
tf.Validator = validator
}
infos, err := c.Build(tt.namespace, tt.reader)
if err != nil && err.Error() != tt.errMessage {
t.Errorf("%q. Error while building manifests: %v", tt.name, err)
}
err = perform(c, tt.namespace, infos, fn)
if (err != nil) != tt.err {
t.Errorf("%q. expected error: %v, got %v", tt.name, tt.err, err)
}
if err != nil && err.Error() != tt.errMessage {
t.Errorf("%q. expected error message: %v, got %v", tt.name, tt.errMessage, err)
}
if len(results) != tt.count {
t.Errorf("%q. expected %d result objects, got %d", tt.name, tt.count, len(results))
}
}
}
func TestWaitAndGetCompletedPodPhase(t *testing.T) {
tests := []struct {
podPhase api.PodPhase
expectedPhase api.PodPhase
err bool
errMessage string
}{
{
podPhase: api.PodPending,
expectedPhase: api.PodUnknown,
err: true,
errMessage: "timed out waiting for the condition",
}, {
podPhase: api.PodRunning,
expectedPhase: api.PodUnknown,
err: true,
errMessage: "timed out waiting for the condition",
}, {
podPhase: api.PodSucceeded,
expectedPhase: api.PodSucceeded,
}, {
podPhase: api.PodFailed,
expectedPhase: api.PodFailed,
},
}
for _, tt := range tests {
f, tf, codec, ns := cmdtesting.NewAPIFactory()
actions := make(map[string]string)
var testPodList api.PodList
testPodList.Items = append(testPodList.Items, newPodWithStatus("bestpod", api.PodStatus{Phase: tt.podPhase}, "test"))
tf.Client = &fake.RESTClient{
NegotiatedSerializer: ns,
Client: fake.CreateHTTPClient(func(req *http.Request) (*http.Response, error) {
p, m := req.URL.Path, req.Method
actions[p] = m
switch {
case p == "/namespaces/test/pods/bestpod" && m == "GET":
return newResponse(200, &testPodList.Items[0])
case p == "/watch/namespaces/test/pods/bestpod" && m == "GET":
event := watch.Event{Type: watch.Added, Object: &testPodList.Items[0]}
return newEventResponse(200, &event)
default:
t.Fatalf("unexpected request: %#v\n%#v", req.URL, req)
return nil, nil
}
}),
}
c := &Client{Factory: f}
phase, err := c.WaitAndGetCompletedPodPhase("test", objBody(codec, &testPodList), 1*time.Second)
if (err != nil) != tt.err {
t.Fatalf("Expected error but there was none.")
}
if err != nil && err.Error() != tt.errMessage {
t.Fatalf("Expected error %s, got %s", tt.errMessage, err.Error())
}
if phase != tt.expectedPhase {
t.Fatalf("Expected pod phase %s, got %s", tt.expectedPhase, phase)
}
}
}
func TestReal(t *testing.T) {
t.Skip("This is a live test, comment this line to run")
c := New(nil)
if err := c.Create("test", strings.NewReader(guestbookManifest), 300, false); err != nil {
t.Fatal(err)
}
testSvcEndpointManifest := testServiceManifest + "\n---\n" + testEndpointManifest
c = New(nil)
if err := c.Create("test-delete", strings.NewReader(testSvcEndpointManifest), 300, false); err != nil {
t.Fatal(err)
}
if err := c.Delete("test-delete", strings.NewReader(testEndpointManifest)); err != nil {
t.Fatal(err)
}
// ensures that delete does not fail if a resource is not found
if err := c.Delete("test-delete", strings.NewReader(testSvcEndpointManifest)); err != nil {
t.Fatal(err)
}
}
const testServiceManifest = `
kind: Service
apiVersion: v1
metadata:
name: my-service
spec:
selector:
app: myapp
ports:
- port: 80
protocol: TCP
targetPort: 9376
`
const testInvalidServiceManifest = `
kind: Service
apiVersion: v1
spec:
ports:
- port: "80"
`
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: gcr.io/google_containers/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
`