| /** |
| * 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.cli.util; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.io.File; |
| import java.io.PrintStream; |
| import java.util.StringTokenizer; |
| |
| import org.apache.hadoop.cli.TestCLI; |
| import org.apache.hadoop.cli.util.CLITestData.TestCmd; |
| import org.apache.hadoop.cli.util.CLITestData.TestCmd.CommandType; |
| import org.apache.hadoop.fs.FsShell; |
| import org.apache.hadoop.hdfs.tools.DFSAdmin; |
| import org.apache.hadoop.mapred.tools.MRAdmin; |
| import org.apache.hadoop.util.ToolRunner; |
| |
| /** |
| * |
| * This class executed commands and captures the output |
| */ |
| public class CommandExecutor { |
| private static String commandOutput = null; |
| private static int exitCode = 0; |
| private static Exception lastException = null; |
| private static String cmdExecuted = null; |
| |
| private static String[] getCommandAsArgs(final String cmd, final String masterKey, |
| final String master) { |
| StringTokenizer tokenizer = new StringTokenizer(cmd, " "); |
| String[] args = new String[tokenizer.countTokens()]; |
| |
| int i = 0; |
| while (tokenizer.hasMoreTokens()) { |
| args[i] = tokenizer.nextToken(); |
| |
| args[i] = args[i].replaceAll(masterKey, master); |
| args[i] = args[i].replaceAll("CLITEST_DATA", |
| new File(TestCLI.TEST_CACHE_DATA_DIR). |
| toURI().toString().replace(' ', '+')); |
| args[i] = args[i].replaceAll("USERNAME", System.getProperty("user.name")); |
| |
| i++; |
| } |
| |
| return args; |
| } |
| |
| public static int executeCommand(final TestCmd cmd, |
| final String namenode, final String jobtracker) |
| throws Exception { |
| switch(cmd.getType()) { |
| case DFSADMIN: |
| return CommandExecutor.executeDFSAdminCommand(cmd.getCmd(), namenode); |
| case MRADMIN: |
| return CommandExecutor.executeMRAdminCommand(cmd.getCmd(), jobtracker); |
| case FS: |
| return CommandExecutor.executeFSCommand(cmd.getCmd(), namenode); |
| default: |
| throw new Exception("Unknow type of Test command:"+ cmd.getType()); |
| } |
| } |
| |
| public static int executeDFSAdminCommand(final String cmd, final String namenode) { |
| exitCode = 0; |
| |
| ByteArrayOutputStream bao = new ByteArrayOutputStream(); |
| PrintStream origOut = System.out; |
| PrintStream origErr = System.err; |
| |
| System.setOut(new PrintStream(bao)); |
| System.setErr(new PrintStream(bao)); |
| |
| DFSAdmin shell = new DFSAdmin(); |
| String[] args = getCommandAsArgs(cmd, "NAMENODE", namenode); |
| cmdExecuted = cmd; |
| |
| try { |
| ToolRunner.run(shell, args); |
| } catch (Exception e) { |
| e.printStackTrace(); |
| lastException = e; |
| exitCode = -1; |
| } finally { |
| System.setOut(origOut); |
| System.setErr(origErr); |
| } |
| |
| commandOutput = bao.toString(); |
| |
| return exitCode; |
| } |
| |
| public static int executeMRAdminCommand(final String cmd, |
| final String jobtracker) { |
| exitCode = 0; |
| |
| ByteArrayOutputStream bao = new ByteArrayOutputStream(); |
| PrintStream origOut = System.out; |
| PrintStream origErr = System.err; |
| |
| System.setOut(new PrintStream(bao)); |
| System.setErr(new PrintStream(bao)); |
| |
| MRAdmin mradmin = new MRAdmin(); |
| String[] args = getCommandAsArgs(cmd, "JOBTRACKER", jobtracker); |
| cmdExecuted = cmd; |
| |
| try { |
| ToolRunner.run(mradmin, args); |
| } catch (Exception e) { |
| e.printStackTrace(); |
| lastException = e; |
| exitCode = -1; |
| } finally { |
| System.setOut(origOut); |
| System.setErr(origErr); |
| } |
| |
| commandOutput = bao.toString(); |
| |
| return exitCode; |
| } |
| |
| public static int executeFSCommand(final String cmd, final String namenode) { |
| exitCode = 0; |
| |
| ByteArrayOutputStream bao = new ByteArrayOutputStream(); |
| PrintStream origOut = System.out; |
| PrintStream origErr = System.err; |
| |
| System.setOut(new PrintStream(bao)); |
| System.setErr(new PrintStream(bao)); |
| |
| FsShell shell = new FsShell(); |
| String[] args = getCommandAsArgs(cmd, "NAMENODE", namenode); |
| cmdExecuted = cmd; |
| |
| try { |
| ToolRunner.run(shell, args); |
| } catch (Exception e) { |
| e.printStackTrace(); |
| lastException = e; |
| exitCode = -1; |
| } finally { |
| System.setOut(origOut); |
| System.setErr(origErr); |
| } |
| |
| commandOutput = bao.toString(); |
| |
| return exitCode; |
| } |
| |
| public static String getLastCommandOutput() { |
| return commandOutput; |
| } |
| |
| public static int getLastExitCode() { |
| return exitCode; |
| } |
| |
| public static Exception getLastException() { |
| return lastException; |
| } |
| |
| public static String getLastCommand() { |
| return cmdExecuted; |
| } |
| } |