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

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 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * 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).

 *

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package jdk.jfr.jcmd;

import java.io.File;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

import jdk.test.lib.Asserts;

import jdk.test.lib.jfr.FileHelper;

import jdk.test.lib.process.OutputAnalyzer;

/*

 * @test

 * @summary Start a recording without name.

 * @key jfr

 * @library /test/lib /test/jdk

 * @run main/othervm jdk.jfr.jcmd.TestJcmdStartStopDefault

 */

public class TestJcmdStartStopDefault {

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

        File recording = new File("TestJcmdStartStopDefault.jfr");

        OutputAnalyzer output = JcmdHelper.jcmd("JFR.start");

        JcmdAsserts.assertRecordingHasStarted(output);

        String name = parseRecordingName(output);

        name= "Recording-" + name;

        JcmdHelper.waitUntilRunning(name);

        output = JcmdHelper.jcmd("JFR.dump",

                "name=" + name,

                "filename=" + recording.getAbsolutePath());

        JcmdAsserts.assertRecordingDumpedToFile(output, name, recording);

        JcmdHelper.stopAndCheck(name);

        FileHelper.verifyRecording(recording);

    }

    private static String parseRecordingName(OutputAnalyzer output) {

        // Expected output:

        // Started recording recording-1. No limit (duration/maxsize/maxage) in use.

        // Use JFR.dump name=recording-1 filename=FILEPATH to copy recording data to file.

        String stdout = output.getStdout();

        Pattern p = Pattern.compile(".*Use JFR.dump name=(\\S+).*", Pattern.DOTALL);

        Matcher m = p.matcher(stdout);

        Asserts.assertTrue(m.matches(), "Could not parse recording name");

        String name = m.group(1);

        System.out.println("Recording name=" + name);

        return name;

    }

}