001/* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, software 013 * distributed under the License is distributed on an "AS IS" BASIS, 014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 015 * See the License for the specific language governing permissions and 016 * limitations under the License. 017 */ 018package org.apache.hadoop.hbase.ipc; 019 020import org.apache.yetus.audience.InterfaceAudience; 021 022import org.apache.hbase.thirdparty.io.netty.buffer.Unpooled; 023import org.apache.hbase.thirdparty.io.netty.channel.ChannelHandlerContext; 024import org.apache.hbase.thirdparty.io.netty.channel.ChannelOutboundHandlerAdapter; 025import org.apache.hbase.thirdparty.io.netty.channel.ChannelPromise; 026 027/** 028 * Encoder for {@link RpcResponse}. 029 * @since 2.0.0 030 */ 031@InterfaceAudience.Private 032class NettyRpcServerResponseEncoder extends ChannelOutboundHandlerAdapter { 033 034 private final MetricsHBaseServer metrics; 035 036 NettyRpcServerResponseEncoder(MetricsHBaseServer metrics) { 037 this.metrics = metrics; 038 } 039 040 @Override 041 public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) 042 throws Exception { 043 if (msg instanceof RpcResponse) { 044 RpcResponse resp = (RpcResponse) msg; 045 BufferChain buf = resp.getResponse(); 046 ctx.write(Unpooled.wrappedBuffer(buf.getBuffers()), promise).addListener(f -> { 047 resp.done(); 048 if (f.isSuccess()) { 049 metrics.sentBytes(buf.size()); 050 } 051 }); 052 } else { 053 ctx.write(msg, promise); 054 } 055 } 056}