247 lines
6.1 KiB
Go
247 lines
6.1 KiB
Go
// Copyright 2015 CoreOS, Inc.
|
|
//
|
|
// 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 storage
|
|
|
|
import (
|
|
"bytes"
|
|
"os"
|
|
"reflect"
|
|
"testing"
|
|
"time"
|
|
|
|
"github.com/coreos/etcd/lease"
|
|
"github.com/coreos/etcd/storage/backend"
|
|
)
|
|
|
|
// TestWatcherWatchID tests that each watcher provides unique watchID,
|
|
// and the watched event attaches the correct watchID.
|
|
func TestWatcherWatchID(t *testing.T) {
|
|
b, tmpPath := backend.NewDefaultTmpBackend()
|
|
s := WatchableKV(newWatchableStore(b, &lease.FakeLessor{}))
|
|
defer cleanup(s, b, tmpPath)
|
|
|
|
w := s.NewWatchStream()
|
|
defer w.Close()
|
|
|
|
idm := make(map[WatchID]struct{})
|
|
|
|
for i := 0; i < 10; i++ {
|
|
id := w.Watch([]byte("foo"), nil, 0)
|
|
if _, ok := idm[id]; ok {
|
|
t.Errorf("#%d: id %d exists", i, id)
|
|
}
|
|
idm[id] = struct{}{}
|
|
|
|
s.Put([]byte("foo"), []byte("bar"), lease.NoLease)
|
|
|
|
resp := <-w.Chan()
|
|
if resp.WatchID != id {
|
|
t.Errorf("#%d: watch id in event = %d, want %d", i, resp.WatchID, id)
|
|
}
|
|
|
|
if err := w.Cancel(id); err != nil {
|
|
t.Error(err)
|
|
}
|
|
}
|
|
|
|
s.Put([]byte("foo2"), []byte("bar"), lease.NoLease)
|
|
|
|
// unsynced watchers
|
|
for i := 10; i < 20; i++ {
|
|
id := w.Watch([]byte("foo2"), nil, 1)
|
|
if _, ok := idm[id]; ok {
|
|
t.Errorf("#%d: id %d exists", i, id)
|
|
}
|
|
idm[id] = struct{}{}
|
|
|
|
resp := <-w.Chan()
|
|
if resp.WatchID != id {
|
|
t.Errorf("#%d: watch id in event = %d, want %d", i, resp.WatchID, id)
|
|
}
|
|
|
|
if err := w.Cancel(id); err != nil {
|
|
t.Error(err)
|
|
}
|
|
}
|
|
}
|
|
|
|
// TestWatcherWatchPrefix tests if Watch operation correctly watches
|
|
// and returns events with matching prefixes.
|
|
func TestWatcherWatchPrefix(t *testing.T) {
|
|
b, tmpPath := backend.NewDefaultTmpBackend()
|
|
s := WatchableKV(newWatchableStore(b, &lease.FakeLessor{}))
|
|
defer cleanup(s, b, tmpPath)
|
|
|
|
w := s.NewWatchStream()
|
|
defer w.Close()
|
|
|
|
idm := make(map[WatchID]struct{})
|
|
|
|
val := []byte("bar")
|
|
keyWatch, keyEnd, keyPut := []byte("foo"), []byte("fop"), []byte("foobar")
|
|
|
|
for i := 0; i < 10; i++ {
|
|
id := w.Watch(keyWatch, keyEnd, 0)
|
|
if _, ok := idm[id]; ok {
|
|
t.Errorf("#%d: unexpected duplicated id %x", i, id)
|
|
}
|
|
idm[id] = struct{}{}
|
|
|
|
s.Put(keyPut, val, lease.NoLease)
|
|
|
|
resp := <-w.Chan()
|
|
if resp.WatchID != id {
|
|
t.Errorf("#%d: watch id in event = %d, want %d", i, resp.WatchID, id)
|
|
}
|
|
|
|
if err := w.Cancel(id); err != nil {
|
|
t.Errorf("#%d: unexpected cancel error %v", i, err)
|
|
}
|
|
|
|
if len(resp.Events) != 1 {
|
|
t.Errorf("#%d: len(resp.Events) got = %d, want = 1", i, len(resp.Events))
|
|
}
|
|
if len(resp.Events) == 1 {
|
|
if !bytes.Equal(resp.Events[0].Kv.Key, keyPut) {
|
|
t.Errorf("#%d: resp.Events got = %s, want = %s", i, resp.Events[0].Kv.Key, keyPut)
|
|
}
|
|
}
|
|
}
|
|
|
|
keyWatch1, keyEnd1, keyPut1 := []byte("foo1"), []byte("foo2"), []byte("foo1bar")
|
|
s.Put(keyPut1, val, lease.NoLease)
|
|
|
|
// unsynced watchers
|
|
for i := 10; i < 15; i++ {
|
|
id := w.Watch(keyWatch1, keyEnd1, 1)
|
|
if _, ok := idm[id]; ok {
|
|
t.Errorf("#%d: id %d exists", i, id)
|
|
}
|
|
idm[id] = struct{}{}
|
|
|
|
resp := <-w.Chan()
|
|
if resp.WatchID != id {
|
|
t.Errorf("#%d: watch id in event = %d, want %d", i, resp.WatchID, id)
|
|
}
|
|
|
|
if err := w.Cancel(id); err != nil {
|
|
t.Error(err)
|
|
}
|
|
|
|
if len(resp.Events) != 1 {
|
|
t.Errorf("#%d: len(resp.Events) got = %d, want = 1", i, len(resp.Events))
|
|
}
|
|
if len(resp.Events) == 1 {
|
|
if !bytes.Equal(resp.Events[0].Kv.Key, keyPut1) {
|
|
t.Errorf("#%d: resp.Events got = %s, want = %s", i, resp.Events[0].Kv.Key, keyPut1)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// TestWatchStreamCancelWatcherByID ensures cancel calls the cancel func of the watcher
|
|
// with given id inside watchStream.
|
|
func TestWatchStreamCancelWatcherByID(t *testing.T) {
|
|
b, tmpPath := backend.NewDefaultTmpBackend()
|
|
s := WatchableKV(newWatchableStore(b, &lease.FakeLessor{}))
|
|
defer cleanup(s, b, tmpPath)
|
|
|
|
w := s.NewWatchStream()
|
|
defer w.Close()
|
|
|
|
id := w.Watch([]byte("foo"), nil, 0)
|
|
|
|
tests := []struct {
|
|
cancelID WatchID
|
|
werr error
|
|
}{
|
|
// no error should be returned when cancel the created watcher.
|
|
{id, nil},
|
|
// not exist error should be returned when cancel again.
|
|
{id, ErrWatcherNotExist},
|
|
// not exist error should be returned when cancel a bad id.
|
|
{id + 1, ErrWatcherNotExist},
|
|
}
|
|
|
|
for i, tt := range tests {
|
|
gerr := w.Cancel(tt.cancelID)
|
|
|
|
if gerr != tt.werr {
|
|
t.Errorf("#%d: err = %v, want %v", i, gerr, tt.werr)
|
|
}
|
|
}
|
|
|
|
if l := len(w.(*watchStream).cancels); l != 0 {
|
|
t.Errorf("cancels = %d, want 0", l)
|
|
}
|
|
}
|
|
|
|
// TestWatcherRequestProgress ensures synced watcher can correctly
|
|
// report its correct progress.
|
|
func TestWatcherRequestProgress(t *testing.T) {
|
|
b, tmpPath := backend.NewDefaultTmpBackend()
|
|
|
|
// manually create watchableStore instead of newWatchableStore
|
|
// because newWatchableStore automatically calls syncWatchers
|
|
// method to sync watchers in unsynced map. We want to keep watchers
|
|
// in unsynced to test if syncWatchers works as expected.
|
|
s := &watchableStore{
|
|
store: NewStore(b, &lease.FakeLessor{}),
|
|
unsynced: newWatcherGroup(),
|
|
synced: newWatcherGroup(),
|
|
}
|
|
|
|
defer func() {
|
|
s.store.Close()
|
|
os.Remove(tmpPath)
|
|
}()
|
|
|
|
testKey := []byte("foo")
|
|
notTestKey := []byte("bad")
|
|
testValue := []byte("bar")
|
|
s.Put(testKey, testValue, lease.NoLease)
|
|
|
|
w := s.NewWatchStream()
|
|
|
|
badID := WatchID(1000)
|
|
w.RequestProgress(badID)
|
|
select {
|
|
case resp := <-w.Chan():
|
|
t.Fatalf("unexpected %+v", resp)
|
|
default:
|
|
}
|
|
|
|
id := w.Watch(notTestKey, nil, 1)
|
|
w.RequestProgress(id)
|
|
select {
|
|
case resp := <-w.Chan():
|
|
t.Fatalf("unexpected %+v", resp)
|
|
default:
|
|
}
|
|
|
|
s.syncWatchers()
|
|
|
|
w.RequestProgress(id)
|
|
wrs := WatchResponse{WatchID: 0, Revision: 2}
|
|
select {
|
|
case resp := <-w.Chan():
|
|
if !reflect.DeepEqual(resp, wrs) {
|
|
t.Fatalf("got %+v, expect %+v", resp, wrs)
|
|
}
|
|
case <-time.After(time.Second):
|
|
t.Fatal("failed to receive progress")
|
|
}
|
|
}
|