-
Notifications
You must be signed in to change notification settings - Fork 9.7k
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Iwasaki Yudai
committed
Jun 20, 2017
1 parent
e475a4e
commit e4192f8
Showing
12 changed files
with
503 additions
and
197 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,122 @@ | ||
| // Copyright 2017 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 ( | ||
| "sync" | ||
| "time" | ||
|
|
||
| "github.com/jonboulle/clockwork" | ||
| "golang.org/x/net/context" | ||
|
|
||
| pb "github.com/coreos/etcd/etcdserver/etcdserverpb" | ||
| "github.com/coreos/etcd/mvcc" | ||
| ) | ||
|
|
||
| // Periodic compacts the log by purging revisions older than | ||
| // the configured retention time. Compaction happens hourly. | ||
| type Periodic struct { | ||
| clock clockwork.Clock | ||
| periodInHour int | ||
|
|
||
| rg RevGetter | ||
| c Compactable | ||
|
|
||
| revs []int64 | ||
| ctx context.Context | ||
| cancel context.CancelFunc | ||
|
|
||
| mu sync.Mutex | ||
| paused bool | ||
| } | ||
|
|
||
| // NewPeriodic creates a new instance of Periodic compactor that purges | ||
| // the log older than h hours. | ||
| func NewPeriodic(h int, rg RevGetter, c Compactable) *Periodic { | ||
| return &Periodic{ | ||
| clock: clockwork.NewRealClock(), | ||
| periodInHour: h, | ||
| rg: rg, | ||
| c: c, | ||
| } | ||
| } | ||
|
|
||
| func (t *Periodic) Run() { | ||
| t.ctx, t.cancel = context.WithCancel(context.Background()) | ||
| t.revs = make([]int64, 0) | ||
| clock := t.clock | ||
|
|
||
| go func() { | ||
| last := clock.Now() | ||
| for { | ||
| t.revs = append(t.revs, t.rg.Rev()) | ||
| select { | ||
| case <-t.ctx.Done(): | ||
| return | ||
| case <-clock.After(checkCompactionInterval): | ||
| t.mu.Lock() | ||
| p := t.paused | ||
| t.mu.Unlock() | ||
| if p { | ||
| continue | ||
| } | ||
| } | ||
|
|
||
| if clock.Now().Sub(last) < executeCompactionInterval { | ||
| continue | ||
| } | ||
|
|
||
| rev, remaining := t.getRev(t.periodInHour) | ||
| if rev < 0 { | ||
| continue | ||
| } | ||
|
|
||
| plog.Noticef("Starting auto-compaction at revision %d (retention: %d hours)", rev, t.periodInHour) | ||
| _, err := t.c.Compact(t.ctx, &pb.CompactionRequest{Revision: rev}) | ||
| if err == nil || err == mvcc.ErrCompacted { | ||
| t.revs = remaining | ||
| last = clock.Now() | ||
| plog.Noticef("Finished auto-compaction at revision %d", rev) | ||
| } else { | ||
| plog.Noticef("Failed auto-compaction at revision %d (%v)", err, rev) | ||
| plog.Noticef("Retry after %v", checkCompactionInterval) | ||
| } | ||
| } | ||
| }() | ||
| } | ||
|
|
||
| func (t *Periodic) Stop() { | ||
| t.cancel() | ||
| } | ||
|
|
||
| func (t *Periodic) Pause() { | ||
| t.mu.Lock() | ||
| defer t.mu.Unlock() | ||
| t.paused = true | ||
| } | ||
|
|
||
| func (t *Periodic) Resume() { | ||
| t.mu.Lock() | ||
| defer t.mu.Unlock() | ||
| t.paused = false | ||
| } | ||
|
|
||
| func (t *Periodic) getRev(h int) (int64, []int64) { | ||
| i := len(t.revs) - int(time.Duration(h)*time.Hour/checkCompactionInterval) | ||
| if i < 0 { | ||
| return -1, t.revs | ||
| } | ||
| return t.revs[i], t.revs[i+1:] | ||
| } |
Oops, something went wrong.