1 /*
   2  * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 package jdk.test.lib.dcmd;
  25 
  26 import jdk.test.lib.JDKToolFinder;
  27 import jdk.test.lib.process.OutputAnalyzer;
  28 import jdk.test.lib.process.ProcessTools;
  29 
  30 import java.util.List;
  31 
  32 /**
  33  * Base class for Diagnostic Command Executors using the jcmd tool
  34  */
  35 public abstract class JcmdExecutor extends CommandExecutor {
  36     protected String jcmdBinary;
  37 
  38     protected abstract List<String> createCommandLine(String cmd) throws CommandExecutorException;
  39 
  40     protected JcmdExecutor() {
  41         jcmdBinary = JDKToolFinder.getJDKTool("jcmd");
  42     }
  43 
  44     protected OutputAnalyzer executeImpl(String cmd) throws CommandExecutorException {
  45         List<String> commandLine = createCommandLine(cmd);
  46 
  47         try {
  48             System.out.printf("Executing command '%s'%n", commandLine);
  49             OutputAnalyzer output = ProcessTools.executeProcess(new ProcessBuilder(commandLine));
  50             System.out.printf("Command returned with exit code %d%n", output.getExitValue());
  51 
  52             return output;
  53         } catch (Exception e) {
  54             String message = String.format("Caught exception while executing '%s'", commandLine);
  55             throw new CommandExecutorException(message, e);
  56         }
  57     }
  58 }