1 /* 2 * Copyright 2018 The gRPC Authors 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package io.grpc.internal; 18 19 import com.google.common.base.MoreObjects; 20 import io.grpc.Metadata; 21 import io.grpc.Status; 22 23 abstract class ForwardingClientStreamListener implements ClientStreamListener { 24 delegate()25 protected abstract ClientStreamListener delegate(); 26 27 @Override headersRead(Metadata headers)28 public void headersRead(Metadata headers) { 29 delegate().headersRead(headers); 30 } 31 32 @Override closed(Status status, RpcProgress rpcProgress, Metadata trailers)33 public void closed(Status status, RpcProgress rpcProgress, Metadata trailers) { 34 delegate().closed(status, rpcProgress, trailers); 35 } 36 37 @Override messagesAvailable(MessageProducer producer)38 public void messagesAvailable(MessageProducer producer) { 39 delegate().messagesAvailable(producer); 40 } 41 42 @Override onReady()43 public void onReady() { 44 delegate().onReady(); 45 } 46 47 @Override toString()48 public String toString() { 49 return MoreObjects.toStringHelper(this).add("delegate", delegate()).toString(); 50 } 51 } 52