| /** |
| * 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.net.SocketAddress; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.hbase.client.MetricsConnection; |
| import org.apache.hadoop.hbase.util.ReflectionUtils; |
| import org.apache.yetus.audience.InterfaceAudience; |
| |
| import org.apache.hbase.thirdparty.com.google.common.collect.ImmutableMap; |
| |
| /** |
| * Factory to create a {@link org.apache.hadoop.hbase.ipc.RpcClient} |
| */ |
| @InterfaceAudience.Private |
| public final class RpcClientFactory { |
| |
| public static final String CUSTOM_RPC_CLIENT_IMPL_CONF_KEY = "hbase.rpc.client.impl"; |
| |
| private static final ImmutableMap<String, String> DEPRECATED_NAME_MAPPING = ImmutableMap.of( |
| "org.apache.hadoop.hbase.ipc.RpcClientImpl", BlockingRpcClient.class.getName(), |
| "org.apache.hadoop.hbase.ipc.AsyncRpcClient", NettyRpcClient.class.getName()); |
| |
| /** |
| * Private Constructor |
| */ |
| private RpcClientFactory() { |
| } |
| |
| /** Helper method for tests only. Creates an {@code RpcClient} without metrics. */ |
| public static RpcClient createClient(Configuration conf, String clusterId) { |
| return createClient(conf, clusterId, null); |
| } |
| |
| /** |
| * Creates a new RpcClient by the class defined in the configuration or falls back to |
| * RpcClientImpl |
| * @param conf configuration |
| * @param clusterId the cluster id |
| * @param metrics the connection metrics |
| * @return newly created RpcClient |
| */ |
| public static RpcClient createClient(Configuration conf, String clusterId, |
| MetricsConnection metrics) { |
| return createClient(conf, clusterId, null, metrics); |
| } |
| |
| private static String getRpcClientClass(Configuration conf) { |
| String rpcClientClass = conf.get(CUSTOM_RPC_CLIENT_IMPL_CONF_KEY); |
| if (rpcClientClass == null) { |
| return NettyRpcClient.class.getName(); |
| } |
| String mappedName = DEPRECATED_NAME_MAPPING.get(rpcClientClass); |
| return mappedName == null ? rpcClientClass : mappedName; |
| } |
| |
| /** |
| * Creates a new RpcClient by the class defined in the configuration or falls back to |
| * RpcClientImpl |
| * @param conf configuration |
| * @param clusterId the cluster id |
| * @param localAddr client socket bind address. |
| * @param metrics the connection metrics |
| * @return newly created RpcClient |
| */ |
| public static RpcClient createClient(Configuration conf, String clusterId, |
| SocketAddress localAddr, MetricsConnection metrics) { |
| String rpcClientClass = getRpcClientClass(conf); |
| return ReflectionUtils.instantiateWithCustomCtor(rpcClientClass, new Class[] { |
| Configuration.class, String.class, SocketAddress.class, MetricsConnection.class }, |
| new Object[] { conf, clusterId, localAddr, metrics }); |
| } |
| } |