| /* |
| * 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.io.retry; |
| |
| import java.io.IOException; |
| |
| import org.apache.hadoop.classification.InterfaceStability; |
| import org.apache.hadoop.ipc.RPC; |
| |
| /** |
| * An implementation of {@link FailoverProxyProvider} which does nothing in the |
| * event of failover, and always returns the same proxy object. |
| */ |
| @InterfaceStability.Evolving |
| public class DefaultFailoverProxyProvider implements FailoverProxyProvider { |
| |
| private Object proxy; |
| private Class<?> iface; |
| |
| public DefaultFailoverProxyProvider(Class<?> iface, Object proxy) { |
| this.proxy = proxy; |
| this.iface = iface; |
| } |
| |
| @Override |
| public Class<?> getInterface() { |
| return iface; |
| } |
| |
| @Override |
| public Object getProxy() { |
| return proxy; |
| } |
| |
| @Override |
| public void performFailover(Object currentProxy) { |
| // Nothing to do. |
| } |
| |
| @Override |
| public void close() throws IOException { |
| RPC.stopProxy(proxy); |
| } |
| |
| } |