| /** |
| * 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.yarn.client; |
| |
| import java.io.IOException; |
| import java.net.InetSocketAddress; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.conf.Configured; |
| import org.apache.hadoop.ipc.RemoteException; |
| import org.apache.hadoop.util.Tool; |
| import org.apache.hadoop.util.ToolRunner; |
| import org.apache.hadoop.yarn.conf.YarnConfiguration; |
| import org.apache.hadoop.yarn.exceptions.YarnException; |
| import org.apache.hadoop.yarn.factories.RecordFactory; |
| import org.apache.hadoop.yarn.factory.providers.RecordFactoryProvider; |
| import org.apache.hadoop.yarn.ipc.YarnRPC; |
| import org.apache.hadoop.yarn.server.api.SCMAdminProtocol; |
| import org.apache.hadoop.yarn.server.api.protocolrecords.RunSharedCacheCleanerTaskRequest; |
| import org.apache.hadoop.yarn.server.api.protocolrecords.RunSharedCacheCleanerTaskResponse; |
| |
| public class SCMAdmin extends Configured implements Tool { |
| |
| private final RecordFactory recordFactory = |
| RecordFactoryProvider.getRecordFactory(null); |
| |
| public SCMAdmin() { |
| super(); |
| } |
| |
| public SCMAdmin(Configuration conf) { |
| super(conf); |
| } |
| |
| private static void printHelp(String cmd) { |
| String summary = "scmadmin is the command to execute shared cache manager" + |
| "administrative commands.\n" + |
| "The full syntax is: \n\n" + |
| "yarn scmadmin" + |
| " [-runCleanerTask]" + |
| " [-help [cmd]]\n"; |
| |
| String runCleanerTask = |
| "-runCleanerTask: Run cleaner task right away.\n"; |
| |
| String help = "-help [cmd]: \tDisplays help for the given command or all commands if none\n" + |
| "\t\tis specified.\n"; |
| |
| if ("runCleanerTask".equals(cmd)) { |
| System.out.println(runCleanerTask); |
| } else if ("help".equals(cmd)) { |
| System.out.println(help); |
| } else { |
| System.out.println(summary); |
| System.out.println(runCleanerTask); |
| System.out.println(help); |
| System.out.println(); |
| ToolRunner.printGenericCommandUsage(System.out); |
| } |
| } |
| |
| /** |
| * Displays format of commands. |
| * @param cmd The command that is being executed. |
| */ |
| private static void printUsage(String cmd) { |
| if ("-runCleanerTask".equals(cmd)) { |
| System.err.println("Usage: yarn scmadmin" + " [-runCleanerTask]"); |
| } else { |
| System.err.println("Usage: yarn scmadmin"); |
| System.err.println(" [-runCleanerTask]"); |
| System.err.println(" [-help [cmd]]"); |
| System.err.println(); |
| ToolRunner.printGenericCommandUsage(System.err); |
| } |
| } |
| |
| protected SCMAdminProtocol createSCMAdminProtocol() throws IOException { |
| // Get the current configuration |
| final YarnConfiguration conf = new YarnConfiguration(getConf()); |
| |
| // Create the admin client |
| final InetSocketAddress addr = conf.getSocketAddr( |
| YarnConfiguration.SCM_ADMIN_ADDRESS, |
| YarnConfiguration.DEFAULT_SCM_ADMIN_ADDRESS, |
| YarnConfiguration.DEFAULT_SCM_ADMIN_PORT); |
| final YarnRPC rpc = YarnRPC.create(conf); |
| SCMAdminProtocol scmAdminProtocol = |
| (SCMAdminProtocol) rpc.getProxy(SCMAdminProtocol.class, addr, conf); |
| return scmAdminProtocol; |
| } |
| |
| private int runCleanerTask() throws YarnException, IOException { |
| // run cleaner task right away |
| SCMAdminProtocol scmAdminProtocol = createSCMAdminProtocol(); |
| RunSharedCacheCleanerTaskRequest request = |
| recordFactory.newRecordInstance(RunSharedCacheCleanerTaskRequest.class); |
| RunSharedCacheCleanerTaskResponse response = |
| scmAdminProtocol.runCleanerTask(request); |
| if (response.getAccepted()) { |
| System.out.println("request accepted by shared cache manager"); |
| return 0; |
| } else { |
| System.out.println("request rejected by shared cache manager"); |
| return 1; |
| } |
| } |
| |
| @Override |
| public int run(String[] args) throws Exception { |
| if (args.length < 1) { |
| printUsage(""); |
| return -1; |
| } |
| |
| int i = 0; |
| String cmd = args[i++]; |
| |
| try { |
| if ("-runCleanerTask".equals(cmd)) { |
| if (args.length != 1) { |
| printUsage(cmd); |
| return -1; |
| } else { |
| return runCleanerTask(); |
| } |
| } else if ("-help".equals(cmd)) { |
| if (i < args.length) { |
| printUsage(args[i]); |
| } else { |
| printHelp(""); |
| } |
| return 0; |
| } else { |
| System.err.println(cmd.substring(1) + ": Unknown command"); |
| printUsage(""); |
| return -1; |
| } |
| |
| } catch (IllegalArgumentException arge) { |
| System.err.println(cmd.substring(1) + ": " + arge.getLocalizedMessage()); |
| printUsage(cmd); |
| } catch (RemoteException e) { |
| // |
| // This is a error returned by hadoop server. Print |
| // out the first line of the error message, ignore the stack trace. |
| try { |
| String[] content; |
| content = e.getLocalizedMessage().split("\n"); |
| System.err.println(cmd.substring(1) + ": " |
| + content[0]); |
| } catch (Exception ex) { |
| System.err.println(cmd.substring(1) + ": " |
| + ex.getLocalizedMessage()); |
| } |
| } catch (Exception e) { |
| System.err.println(cmd.substring(1) + ": " |
| + e.getLocalizedMessage()); |
| } |
| return -1; |
| } |
| |
| public static void main(String[] args) throws Exception { |
| int result = ToolRunner.run(new SCMAdmin(), args); |
| System.exit(result); |
| } |
| } |