/*
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Copyright 2014 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package versioned_test
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import (
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"encoding/json"
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"io"
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"testing"
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"time"
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"k8s.io/api/core/v1"
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apiequality "k8s.io/apimachinery/pkg/api/equality"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/runtime"
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runtimejson "k8s.io/apimachinery/pkg/runtime/serializer/json"
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"k8s.io/apimachinery/pkg/runtime/serializer/streaming"
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"k8s.io/apimachinery/pkg/util/wait"
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"k8s.io/apimachinery/pkg/watch"
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"k8s.io/client-go/kubernetes/scheme"
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restclientwatch "k8s.io/client-go/rest/watch"
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)
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// getDecoder mimics how k8s.io/client-go/rest.createSerializers creates a decoder
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func getDecoder() runtime.Decoder {
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jsonSerializer := runtimejson.NewSerializer(runtimejson.DefaultMetaFactory, scheme.Scheme, scheme.Scheme, false)
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directCodecFactory := scheme.Codecs.WithoutConversion()
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return directCodecFactory.DecoderToVersion(jsonSerializer, v1.SchemeGroupVersion)
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}
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func TestDecoder(t *testing.T) {
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table := []watch.EventType{watch.Added, watch.Deleted, watch.Modified, watch.Error, watch.Bookmark}
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for _, eventType := range table {
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out, in := io.Pipe()
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decoder := restclientwatch.NewDecoder(streaming.NewDecoder(out, getDecoder()), getDecoder())
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expect := &v1.Pod{ObjectMeta: metav1.ObjectMeta{Name: "foo"}}
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encoder := json.NewEncoder(in)
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eType := eventType
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go func() {
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data, err := runtime.Encode(scheme.Codecs.LegacyCodec(v1.SchemeGroupVersion), expect)
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if err != nil {
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t.Fatalf("Unexpected error %v", err)
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}
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event := metav1.WatchEvent{
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Type: string(eType),
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Object: runtime.RawExtension{Raw: json.RawMessage(data)},
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}
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if err := encoder.Encode(&event); err != nil {
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t.Errorf("Unexpected error %v", err)
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}
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in.Close()
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}()
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done := make(chan struct{})
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go func() {
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action, got, err := decoder.Decode()
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if err != nil {
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t.Fatalf("Unexpected error %v", err)
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}
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if e, a := eType, action; e != a {
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t.Errorf("Expected %v, got %v", e, a)
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}
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if e, a := expect, got; !apiequality.Semantic.DeepDerivative(e, a) {
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t.Errorf("Expected %v, got %v", e, a)
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}
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t.Logf("Exited read")
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close(done)
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}()
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<-done
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done = make(chan struct{})
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go func() {
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_, _, err := decoder.Decode()
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if err == nil {
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t.Errorf("Unexpected nil error")
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}
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close(done)
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}()
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<-done
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decoder.Close()
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}
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}
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func TestDecoder_SourceClose(t *testing.T) {
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out, in := io.Pipe()
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decoder := restclientwatch.NewDecoder(streaming.NewDecoder(out, getDecoder()), getDecoder())
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done := make(chan struct{})
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go func() {
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_, _, err := decoder.Decode()
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if err == nil {
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t.Errorf("Unexpected nil error")
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}
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close(done)
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}()
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in.Close()
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select {
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case <-done:
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break
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case <-time.After(wait.ForeverTestTimeout):
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t.Error("Timeout")
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}
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}
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