1 /*

     2  * Copyright (c) 2019, 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 package jdk.jfr.api.consumer.streaming;

    26 

    27 import java.util.concurrent.CountDownLatch;

    28 

    29 import jdk.jfr.Event;

    30 import jdk.jfr.FlightRecorder;

    31 import jdk.jfr.Name;

    32 import jdk.jfr.Period;

    33 import jdk.jfr.Recording;

    34 import jdk.jfr.consumer.RecordingStream;

    35 

    36 /**

    37  * @test

    38  * @summary Verifies that it is possible to stream contents of ongoing

    39  *          recordings

    40  * @key jfr

    41  * @requires vm.hasJFR

    42  * @library /test/lib

    43  * @run main/othervm -Xlog:jfr+system+streaming=trace

    44  *      jdk.jfr.api.consumer.streaming.TestStartMultiChunk

    45  */

    46 public class TestStartMultiChunk {

    47 

    48     @Period("10 s")

    49     @Name("Zebra")

    50     static class ZebraEvent extends Event {

    51     }

    52 

    53     @Name("Cat")

    54     static class CatEvent extends Event {

    55     }

    56 

    57     @Name("Dog")

    58     static class DogEvent extends Event {

    59     }

    60 

    61     @Name("Mouse")

    62     static class MouseEvent extends Event {

    63     }

    64 

    65     public static void main(String... args) throws Exception {

    66         CountDownLatch dogLatch = new CountDownLatch(1);

    67         CountDownLatch catLatch = new CountDownLatch(1);

    68         CountDownLatch mouseLatch = new CountDownLatch(1);

    69         CountDownLatch zebraLatch = new CountDownLatch(3);

    70 

    71         FlightRecorder.addPeriodicEvent(ZebraEvent.class, () -> {

    72             ZebraEvent ze = new ZebraEvent();

    73             ze.commit();

    74             System.out.println("Zebra emitted");

    75         });

    76 

    77         try (RecordingStream s = new RecordingStream()) {

    78             s.onEvent("Cat", e -> {

    79                 System.out.println("Found cat!");

    80                 catLatch.countDown();

    81             });

    82             s.onEvent("Dog", e -> {

    83                 System.out.println("Found dog!");

    84                 dogLatch.countDown();

    85             });

    86             s.onEvent("Zebra", e -> {

    87                 System.out.println("Found zebra!");

    88                 zebraLatch.countDown();

    89             });

    90             s.onEvent("Mouse", e -> {

    91                 System.out.println("Found mouse!");

    92                 mouseLatch.countDown();

    93             });

    94             s.startAsync();

    95             System.out.println("Stream recoding started");

    96 

    97             try (Recording r1 = new Recording()) {

    98                 r1.start();

    99                 System.out.println("r1.start()");

   100                 MouseEvent me = new MouseEvent();

   101                 me.commit();

   102                 System.out.println("Mouse emitted");

   103                 mouseLatch.await();

   104                 try (Recording r2 = new Recording()) { // force chunk rotation

   105                                                        // in stream

   106                     r2.start();

   107                     System.out.println("r2.start()");

   108                     DogEvent de = new DogEvent();

   109                     de.commit();

   110                     System.out.println("Dog emitted");

   111                     dogLatch.await();

   112                     CatEvent ce = new CatEvent();

   113                     ce.commit();

   114                     System.out.println("Cat emitted");

   115                     catLatch.await();

   116                     zebraLatch.await();

   117                 }

   118             }

   119         }

   120     }

   121 }