[VOL-2235] Mocks and interfaces for rw-core
This update consists of mocks that are used by the rw-core
during unit testing. It also includes interfaces used for unit
tests.
Change-Id: I20ca1455c358113c3aa897acc6355e0ddbc614b7
diff --git a/vendor/go.etcd.io/etcd/pkg/transport/limit_listen.go b/vendor/go.etcd.io/etcd/pkg/transport/limit_listen.go
new file mode 100644
index 0000000..930c542
--- /dev/null
+++ b/vendor/go.etcd.io/etcd/pkg/transport/limit_listen.go
@@ -0,0 +1,80 @@
+// Copyright 2013 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 transport provides network utility functions, complementing the more
+// common ones in the net package.
+package transport
+
+import (
+ "errors"
+ "net"
+ "sync"
+ "time"
+)
+
+var (
+ ErrNotTCP = errors.New("only tcp connections have keepalive")
+)
+
+// LimitListener returns a Listener that accepts at most n simultaneous
+// connections from the provided Listener.
+func LimitListener(l net.Listener, n int) net.Listener {
+ return &limitListener{l, make(chan struct{}, n)}
+}
+
+type limitListener struct {
+ net.Listener
+ sem chan struct{}
+}
+
+func (l *limitListener) acquire() { l.sem <- struct{}{} }
+func (l *limitListener) release() { <-l.sem }
+
+func (l *limitListener) Accept() (net.Conn, error) {
+ l.acquire()
+ c, err := l.Listener.Accept()
+ if err != nil {
+ l.release()
+ return nil, err
+ }
+ return &limitListenerConn{Conn: c, release: l.release}, nil
+}
+
+type limitListenerConn struct {
+ net.Conn
+ releaseOnce sync.Once
+ release func()
+}
+
+func (l *limitListenerConn) Close() error {
+ err := l.Conn.Close()
+ l.releaseOnce.Do(l.release)
+ return err
+}
+
+func (l *limitListenerConn) SetKeepAlive(doKeepAlive bool) error {
+ tcpc, ok := l.Conn.(*net.TCPConn)
+ if !ok {
+ return ErrNotTCP
+ }
+ return tcpc.SetKeepAlive(doKeepAlive)
+}
+
+func (l *limitListenerConn) SetKeepAlivePeriod(d time.Duration) error {
+ tcpc, ok := l.Conn.(*net.TCPConn)
+ if !ok {
+ return ErrNotTCP
+ }
+ return tcpc.SetKeepAlivePeriod(d)
+}