VOL-1868 move simulated onu from voltha-go to voltha-simonu-adapter
Sourced from voltha-go commit 251a11c0ffe60512318a644cd6ce0dc4e12f4018
Change-Id: Iab179bc2f3dd772ed7f488d1c03d1a84ba75e874
diff --git a/vendor/google.golang.org/grpc/encoding/proto/proto.go b/vendor/google.golang.org/grpc/encoding/proto/proto.go
new file mode 100644
index 0000000..66b97a6
--- /dev/null
+++ b/vendor/google.golang.org/grpc/encoding/proto/proto.go
@@ -0,0 +1,110 @@
+/*
+ *
+ * Copyright 2018 gRPC 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 proto defines the protobuf codec. Importing this package will
+// register the codec.
+package proto
+
+import (
+ "math"
+ "sync"
+
+ "github.com/golang/protobuf/proto"
+ "google.golang.org/grpc/encoding"
+)
+
+// Name is the name registered for the proto compressor.
+const Name = "proto"
+
+func init() {
+ encoding.RegisterCodec(codec{})
+}
+
+// codec is a Codec implementation with protobuf. It is the default codec for gRPC.
+type codec struct{}
+
+type cachedProtoBuffer struct {
+ lastMarshaledSize uint32
+ proto.Buffer
+}
+
+func capToMaxInt32(val int) uint32 {
+ if val > math.MaxInt32 {
+ return uint32(math.MaxInt32)
+ }
+ return uint32(val)
+}
+
+func marshal(v interface{}, cb *cachedProtoBuffer) ([]byte, error) {
+ protoMsg := v.(proto.Message)
+ newSlice := make([]byte, 0, cb.lastMarshaledSize)
+
+ cb.SetBuf(newSlice)
+ cb.Reset()
+ if err := cb.Marshal(protoMsg); err != nil {
+ return nil, err
+ }
+ out := cb.Bytes()
+ cb.lastMarshaledSize = capToMaxInt32(len(out))
+ return out, nil
+}
+
+func (codec) Marshal(v interface{}) ([]byte, error) {
+ if pm, ok := v.(proto.Marshaler); ok {
+ // object can marshal itself, no need for buffer
+ return pm.Marshal()
+ }
+
+ cb := protoBufferPool.Get().(*cachedProtoBuffer)
+ out, err := marshal(v, cb)
+
+ // put back buffer and lose the ref to the slice
+ cb.SetBuf(nil)
+ protoBufferPool.Put(cb)
+ return out, err
+}
+
+func (codec) Unmarshal(data []byte, v interface{}) error {
+ protoMsg := v.(proto.Message)
+ protoMsg.Reset()
+
+ if pu, ok := protoMsg.(proto.Unmarshaler); ok {
+ // object can unmarshal itself, no need for buffer
+ return pu.Unmarshal(data)
+ }
+
+ cb := protoBufferPool.Get().(*cachedProtoBuffer)
+ cb.SetBuf(data)
+ err := cb.Unmarshal(protoMsg)
+ cb.SetBuf(nil)
+ protoBufferPool.Put(cb)
+ return err
+}
+
+func (codec) Name() string {
+ return Name
+}
+
+var protoBufferPool = &sync.Pool{
+ New: func() interface{} {
+ return &cachedProtoBuffer{
+ Buffer: proto.Buffer{},
+ lastMarshaledSize: 16,
+ }
+ },
+}