| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.hadoop.hbase.ipc; |
| |
| import java.io.IOException; |
| import java.net.SocketAddress; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.hbase.HBaseInterfaceAudience; |
| import org.apache.hadoop.hbase.HConstants; |
| import org.apache.hadoop.hbase.client.MetricsConnection; |
| import org.apache.hadoop.hbase.util.Pair; |
| import org.apache.yetus.audience.InterfaceAudience; |
| |
| import org.apache.hbase.thirdparty.io.netty.channel.Channel; |
| import org.apache.hbase.thirdparty.io.netty.channel.EventLoopGroup; |
| import org.apache.hbase.thirdparty.io.netty.channel.nio.NioEventLoopGroup; |
| import org.apache.hbase.thirdparty.io.netty.channel.socket.nio.NioSocketChannel; |
| import org.apache.hbase.thirdparty.io.netty.util.concurrent.DefaultThreadFactory; |
| |
| /** |
| * Netty client for the requests and responses. |
| * @since 2.0.0 |
| */ |
| @InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.CONFIG) |
| public class NettyRpcClient extends AbstractRpcClient<NettyRpcConnection> { |
| |
| final EventLoopGroup group; |
| |
| final Class<? extends Channel> channelClass; |
| |
| private final boolean shutdownGroupWhenClose; |
| |
| public NettyRpcClient(Configuration configuration, String clusterId, SocketAddress localAddress, |
| MetricsConnection metrics) { |
| super(configuration, clusterId, localAddress, metrics); |
| Pair<EventLoopGroup, Class<? extends Channel>> groupAndChannelClass = |
| NettyRpcClientConfigHelper.getEventLoopConfig(conf); |
| if (groupAndChannelClass == null) { |
| // Use our own EventLoopGroup. |
| int threadCount = conf.getInt( |
| NettyRpcClientConfigHelper.HBASE_NETTY_EVENTLOOP_RPCCLIENT_THREADCOUNT_KEY, 0); |
| this.group = new NioEventLoopGroup(threadCount, |
| new DefaultThreadFactory("RPCClient(own)-NioEventLoopGroup", true, |
| Thread.NORM_PRIORITY)); |
| this.channelClass = NioSocketChannel.class; |
| this.shutdownGroupWhenClose = true; |
| } else { |
| this.group = groupAndChannelClass.getFirst(); |
| this.channelClass = groupAndChannelClass.getSecond(); |
| this.shutdownGroupWhenClose = false; |
| } |
| } |
| |
| /** Used in test only. */ |
| NettyRpcClient(Configuration configuration) { |
| this(configuration, HConstants.CLUSTER_ID_DEFAULT, null, null); |
| } |
| |
| @Override |
| protected NettyRpcConnection createConnection(ConnectionId remoteId) throws IOException { |
| return new NettyRpcConnection(this, remoteId); |
| } |
| |
| @Override |
| protected void closeInternal() { |
| if (shutdownGroupWhenClose) { |
| group.shutdownGracefully(); |
| } |
| } |
| } |