1 /*

     2  * Copyright (c) 2015, 2018, 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.  Oracle designates this

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

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

    10  *

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

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

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

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

    15  * accompanied this code).

    16  *

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

    18  * 2 along with this work; if not, write to the Free Software Foundation,

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

    20  *

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

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

    23  * questions.

    24  */

    25 

    26 package jdk.jfr.jcmd;

    27 

    28 import java.io.File;

    29 import java.util.regex.Matcher;

    30 import java.util.regex.Pattern;

    31 

    32 import jdk.test.lib.Asserts;

    33 import jdk.test.lib.jfr.FileHelper;

    34 import jdk.test.lib.process.OutputAnalyzer;

    35 

    36 /*

    37  * @test

    38  * @summary Start a recording without name.

    39  * @key jfr

    40  * @library /test/lib /test/jdk

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

    42  */

    43 public class TestJcmdStartStopDefault {

    44 

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

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

    47 

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

    49         JcmdAsserts.assertRecordingHasStarted(output);

    50 

    51         String name = parseRecordingName(output);

    52         name= "Recording-" + name;

    53         JcmdHelper.waitUntilRunning(name);

    54 

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

    56                 "name=" + name,

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

    58         JcmdAsserts.assertRecordingDumpedToFile(output, name, recording);

    59         JcmdHelper.stopAndCheck(name);

    60         FileHelper.verifyRecording(recording);

    61     }

    62 

    63     private static String parseRecordingName(OutputAnalyzer output) {

    64         // Expected output:

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

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

    67 

    68         String stdout = output.getStdout();

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

    70         Matcher m = p.matcher(stdout);

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

    72         String name = m.group(1);

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

    74         return name;

    75     }

    76 }