/*

 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package com.oracle.java.testlibrary.dcmd;

import com.oracle.java.testlibrary.JDKToolFinder;

import com.oracle.java.testlibrary.OutputAnalyzer;

import com.oracle.java.testlibrary.ProcessTools;

import java.util.List;

/**

 * Base class for Diagnostic Command Executors using the jcmd tool

 */

public abstract class JcmdExecutor extends CommandExecutor {

    protected String jcmdBinary;

    protected abstract List<String> createCommandLine(String cmd) throws CommandExecutorException;

    protected JcmdExecutor() {

        jcmdBinary = JDKToolFinder.getJDKTool("jcmd");

    }

    protected OutputAnalyzer executeImpl(String cmd) throws CommandExecutorException {

        List<String> commandLine = createCommandLine(cmd);

        try {

            System.out.printf("Executing command '%s'%n", commandLine);

            OutputAnalyzer output = ProcessTools.executeProcess(new ProcessBuilder(commandLine));

            System.out.printf("Command returned with exit code %d%n", output.getExitValue());

            return output;

        } catch (Exception e) {

            String message = String.format("Caught exception while executing '%s'", commandLine);

            throw new CommandExecutorException(message, e);

        }

    }

}