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// Copyright 2015 The etcd 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 compactor
import (
"reflect"
"testing"
"time"
pb "github.com/coreos/etcd/etcdserver/etcdserverpb"
"github.com/coreos/etcd/pkg/testutil"
"github.com/jonboulle/clockwork"
"golang.org/x/net/context"
)
func TestPeriodic(t *testing.T) {
retentionHours := 2
fc := clockwork.NewFakeClock()
rg := &fakeRevGetter{testutil.NewRecorderStream(), 0}
compactable := &fakeCompactable{testutil.NewRecorderStream()}
tb := &Periodic{
clock: fc,
periodInHour: retentionHours,
rg: rg,
c: compactable,
}
tb.Run()
defer tb.Stop()
n := int(time.Hour / checkCompactionInterval)
// collect 5 hours of revisions
for i := 0; i < 5; i++ {
// advance one hour, one revision for each interval
for j := 0; j < n; j++ {
rg.Wait(1)
fc.Advance(checkCompactionInterval)
}
// compaction doesn't happen til 2 hours elapses
if i+1 < retentionHours {
continue
}
a, err := compactable.Wait(1)
if err != nil {
t.Fatal(err)
}
expectedRevision := int64(1 + (i+1)*n - retentionHours*n)
if !reflect.DeepEqual(a[0].Params[0], &pb.CompactionRequest{Revision: expectedRevision}) {
t.Errorf("compact request = %v, want %v", a[0].Params[0], &pb.CompactionRequest{Revision: expectedRevision})
}
}
// unblock the rev getter, so we can stop the compactor routine.
_, err := rg.Wait(1)
if err != nil {
t.Fatal(err)
}
}
func TestPeriodicPause(t *testing.T) {
fc := clockwork.NewFakeClock()
compactable := &fakeCompactable{testutil.NewRecorderStream()}
rg := &fakeRevGetter{testutil.NewRecorderStream(), 0}
tb := &Periodic{
clock: fc,
periodInHour: 1,
rg: rg,
c: compactable,
}
tb.Run()
tb.Pause()
// tb will collect 3 hours of revisions but not compact since paused
n := int(time.Hour / checkCompactionInterval)
for i := 0; i < 3*n; i++ {
rg.Wait(1)
fc.Advance(checkCompactionInterval)
}
// tb ends up waiting for the clock
select {
case a := <-compactable.Chan():
t.Fatalf("unexpected action %v", a)
case <-time.After(10 * time.Millisecond):
}
// tb resumes to being blocked on the clock
tb.Resume()
// unblock clock, will kick off a compaction at hour 3:05
rg.Wait(1)
fc.Advance(checkCompactionInterval)
a, err := compactable.Wait(1)
if err != nil {
t.Fatal(err)
}
// compact the revision from hour 2:05
wreq := &pb.CompactionRequest{Revision: int64(1 + 2*n + 1)}
if !reflect.DeepEqual(a[0].Params[0], wreq) {
t.Errorf("compact request = %v, want %v", a[0].Params[0], wreq.Revision)
}
}
type fakeCompactable struct {
testutil.Recorder
}
func (fc *fakeCompactable) Compact(ctx context.Context, r *pb.CompactionRequest) (*pb.CompactionResponse, error) {
fc.Record(testutil.Action{Name: "c", Params: []interface{}{r}})
return &pb.CompactionResponse{}, nil
}
type fakeRevGetter struct {
testutil.Recorder
rev int64
}
func (fr *fakeRevGetter) Rev() int64 {
fr.Record(testutil.Action{Name: "g"})
fr.rev++
return fr.rev
}
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