VOL-2112 move to voltha-lib-go
Change-Id: Ic1af08003c1d2c698c0cce371e64f47b47b8d875
diff --git a/vendor/google.golang.org/grpc/preloader.go b/vendor/google.golang.org/grpc/preloader.go
new file mode 100644
index 0000000..76acbbc
--- /dev/null
+++ b/vendor/google.golang.org/grpc/preloader.go
@@ -0,0 +1,64 @@
+/*
+ *
+ * Copyright 2019 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 grpc
+
+import (
+ "google.golang.org/grpc/codes"
+ "google.golang.org/grpc/status"
+)
+
+// PreparedMsg is responsible for creating a Marshalled and Compressed object.
+//
+// This API is EXPERIMENTAL.
+type PreparedMsg struct {
+ // Struct for preparing msg before sending them
+ encodedData []byte
+ hdr []byte
+ payload []byte
+}
+
+// Encode marshalls and compresses the message using the codec and compressor for the stream.
+func (p *PreparedMsg) Encode(s Stream, msg interface{}) error {
+ ctx := s.Context()
+ rpcInfo, ok := rpcInfoFromContext(ctx)
+ if !ok {
+ return status.Errorf(codes.Internal, "grpc: unable to get rpcInfo")
+ }
+
+ // check if the context has the relevant information to prepareMsg
+ if rpcInfo.preloaderInfo == nil {
+ return status.Errorf(codes.Internal, "grpc: rpcInfo.preloaderInfo is nil")
+ }
+ if rpcInfo.preloaderInfo.codec == nil {
+ return status.Errorf(codes.Internal, "grpc: rpcInfo.preloaderInfo.codec is nil")
+ }
+
+ // prepare the msg
+ data, err := encode(rpcInfo.preloaderInfo.codec, msg)
+ if err != nil {
+ return err
+ }
+ p.encodedData = data
+ compData, err := compress(data, rpcInfo.preloaderInfo.cp, rpcInfo.preloaderInfo.comp)
+ if err != nil {
+ return err
+ }
+ p.hdr, p.payload = msgHeader(data, compData)
+ return nil
+}