1 /*

     2  * Copyright (c) 2015, 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 com.oracle.java.testlibrary.dcmd;

    25 

    26 import com.oracle.java.testlibrary.JDKToolFinder;

    27 import com.oracle.java.testlibrary.OutputAnalyzer;

    28 import com.oracle.java.testlibrary.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 }