/*

 * Copyright (c) 2014, 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.

 *

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 */

/*

 * @test TestGCLogRotationViaJcmd.java

 * @bug 7090324

 * @summary test for gc log rotation via jcmd

 * @library /testlibrary

 * @modules java.base/sun.misc

 *          java.management

 * @run main/othervm -Xloggc:test.log -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=3 TestGCLogRotationViaJcmd

 *

 */

import jdk.test.lib.*;

import java.io.File;

import java.io.FilenameFilter;

public class TestGCLogRotationViaJcmd {

    static final File currentDirectory = new File(".");

    static final String LOG_FILE_NAME = "test.log";

    static final int NUM_LOGS = 3;

    static FilenameFilter logFilter = new FilenameFilter() {

        @Override

        public boolean accept(File dir, String name) {

            return name.startsWith(LOG_FILE_NAME);

        }

    };

    public static void main(String[] args) throws Exception {

        // Grab the pid from the current java process

        String pid = Integer.toString(ProcessTools.getProcessId());

        // Create a JDKToolLauncher

        JDKToolLauncher jcmd = JDKToolLauncher.create("jcmd")

                                              .addToolArg(pid)

                                              .addToolArg("GC.rotate_log");

        for (int times = 1; times < NUM_LOGS; times++) {

            // Run jcmd <pid> GC.rotate_log

            ProcessBuilder pb = new ProcessBuilder(jcmd.getCommand());

            // Make sure we didn't crash

            OutputAnalyzer output = new OutputAnalyzer(pb.start());

            output.shouldHaveExitValue(0);

        }

        // GC log check

        File[] logs = currentDirectory.listFiles(logFilter);

        if (logs.length != NUM_LOGS) {

            throw new Error("There are only " + logs.length

                                              + " logs instead " + NUM_LOGS);

        }

    }

}