[VOL-4291] Rw-core updates for gRPC migration
Change-Id: I8d5a554409115b29318089671ca4e1ab3fa98810
diff --git a/vendor/github.com/coreos/etcd/compactor/compactor.go b/vendor/github.com/coreos/etcd/compactor/compactor.go
new file mode 100644
index 0000000..8100b69
--- /dev/null
+++ b/vendor/github.com/coreos/etcd/compactor/compactor.go
@@ -0,0 +1,66 @@
+// Copyright 2016 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 (
+ "context"
+ "fmt"
+ "time"
+
+ pb "github.com/coreos/etcd/etcdserver/etcdserverpb"
+
+ "github.com/coreos/pkg/capnslog"
+)
+
+var (
+ plog = capnslog.NewPackageLogger("github.com/coreos/etcd", "compactor")
+)
+
+const (
+ ModePeriodic = "periodic"
+ ModeRevision = "revision"
+)
+
+// Compactor purges old log from the storage periodically.
+type Compactor interface {
+ // Run starts the main loop of the compactor in background.
+ // Use Stop() to halt the loop and release the resource.
+ Run()
+ // Stop halts the main loop of the compactor.
+ Stop()
+ // Pause temporally suspend the compactor not to run compaction. Resume() to unpose.
+ Pause()
+ // Resume restarts the compactor suspended by Pause().
+ Resume()
+}
+
+type Compactable interface {
+ Compact(ctx context.Context, r *pb.CompactionRequest) (*pb.CompactionResponse, error)
+}
+
+type RevGetter interface {
+ Rev() int64
+}
+
+func New(mode string, retention time.Duration, rg RevGetter, c Compactable) (Compactor, error) {
+ switch mode {
+ case ModePeriodic:
+ return NewPeriodic(retention, rg, c), nil
+ case ModeRevision:
+ return NewRevision(int64(retention), rg, c), nil
+ default:
+ return nil, fmt.Errorf("unsupported compaction mode %s", mode)
+ }
+}