[VOL-2538] Logging - Implement dynamic log levels in ofagent
Change-Id: I9582230d9d3c34ea84339fddf2b2f3b3d2804808
diff --git a/vendor/go.etcd.io/etcd/clientv3/concurrency/key.go b/vendor/go.etcd.io/etcd/clientv3/concurrency/key.go
new file mode 100644
index 0000000..e4cf775
--- /dev/null
+++ b/vendor/go.etcd.io/etcd/clientv3/concurrency/key.go
@@ -0,0 +1,65 @@
+// 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 concurrency
+
+import (
+ "context"
+ "fmt"
+
+ v3 "go.etcd.io/etcd/clientv3"
+ pb "go.etcd.io/etcd/etcdserver/etcdserverpb"
+ "go.etcd.io/etcd/mvcc/mvccpb"
+)
+
+func waitDelete(ctx context.Context, client *v3.Client, key string, rev int64) error {
+ cctx, cancel := context.WithCancel(ctx)
+ defer cancel()
+
+ var wr v3.WatchResponse
+ wch := client.Watch(cctx, key, v3.WithRev(rev))
+ for wr = range wch {
+ for _, ev := range wr.Events {
+ if ev.Type == mvccpb.DELETE {
+ return nil
+ }
+ }
+ }
+ if err := wr.Err(); err != nil {
+ return err
+ }
+ if err := ctx.Err(); err != nil {
+ return err
+ }
+ return fmt.Errorf("lost watcher waiting for delete")
+}
+
+// waitDeletes efficiently waits until all keys matching the prefix and no greater
+// than the create revision.
+func waitDeletes(ctx context.Context, client *v3.Client, pfx string, maxCreateRev int64) (*pb.ResponseHeader, error) {
+ getOpts := append(v3.WithLastCreate(), v3.WithMaxCreateRev(maxCreateRev))
+ for {
+ resp, err := client.Get(ctx, pfx, getOpts...)
+ if err != nil {
+ return nil, err
+ }
+ if len(resp.Kvs) == 0 {
+ return resp.Header, nil
+ }
+ lastKey := string(resp.Kvs[0].Key)
+ if err = waitDelete(ctx, client, lastKey, resp.Header.Revision); err != nil {
+ return nil, err
+ }
+ }
+}