[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/github.com/soheilhy/cmux/buffer.go b/vendor/github.com/soheilhy/cmux/buffer.go
new file mode 100644
index 0000000..f8cf30a
--- /dev/null
+++ b/vendor/github.com/soheilhy/cmux/buffer.go
@@ -0,0 +1,67 @@
+// Copyright 2016 The CMux Authors. All rights reserved.
+//
+// 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 cmux
+
+import (
+ "bytes"
+ "io"
+)
+
+// bufferedReader is an optimized implementation of io.Reader that behaves like
+// ```
+// io.MultiReader(bytes.NewReader(buffer.Bytes()), io.TeeReader(source, buffer))
+// ```
+// without allocating.
+type bufferedReader struct {
+ source io.Reader
+ buffer bytes.Buffer
+ bufferRead int
+ bufferSize int
+ sniffing bool
+ lastErr error
+}
+
+func (s *bufferedReader) Read(p []byte) (int, error) {
+ if s.bufferSize > s.bufferRead {
+ // If we have already read something from the buffer before, we return the
+ // same data and the last error if any. We need to immediately return,
+ // otherwise we may block for ever, if we try to be smart and call
+ // source.Read() seeking a little bit of more data.
+ bn := copy(p, s.buffer.Bytes()[s.bufferRead:s.bufferSize])
+ s.bufferRead += bn
+ return bn, s.lastErr
+ } else if !s.sniffing && s.buffer.Cap() != 0 {
+ // We don't need the buffer anymore.
+ // Reset it to release the internal slice.
+ s.buffer = bytes.Buffer{}
+ }
+
+ // If there is nothing more to return in the sniffed buffer, read from the
+ // source.
+ sn, sErr := s.source.Read(p)
+ if sn > 0 && s.sniffing {
+ s.lastErr = sErr
+ if wn, wErr := s.buffer.Write(p[:sn]); wErr != nil {
+ return wn, wErr
+ }
+ }
+ return sn, sErr
+}
+
+func (s *bufferedReader) reset(snif bool) {
+ s.sniffing = snif
+ s.bufferRead = 0
+ s.bufferSize = s.buffer.Len()
+}