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 

    26 package jdk.jfr.api.consumer.streaming;

    27 

    28 import java.nio.file.Files;

    29 import java.nio.file.Path;

    30 import java.nio.file.Paths;

    31 import java.time.Duration;

    32 import java.time.Instant;

    33 import java.util.concurrent.CountDownLatch;

    34 

    35 import jdk.jfr.Event;

    36 import jdk.jfr.Recording;

    37 import jdk.jfr.consumer.EventStream;

    38 import jdk.jfr.jcmd.JcmdHelper;

    39 

    40 /**

    41  * @test

    42  * @summary Verifies that is possible to stream from a repository that is being

    43  *          moved.

    44  * @key jfr

    45  * @requires vm.hasJFR

    46  * @library /test/lib /test/jdk

    47  * @run main/othervm jdk.jfr.api.consumer.streaming.TestRepositoryMigration

    48  */

    49 public class TestRepositoryMigration {

    50     static class MigrationEvent extends Event {

    51         int id;

    52     }

    53 

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

    55         Path newRepository = Paths.get("new-repository");

    56         CountDownLatch event1 = new CountDownLatch(1);

    57         CountDownLatch event2 = new CountDownLatch(1);

    58 

    59         try (EventStream es = EventStream.openRepository()) {

    60             es.setStartTime(Instant.EPOCH);

    61             es.onEvent(e -> {

    62                 System.out.println(e);

    63                 if (e.getInt("id") == 1) {

    64                     event1.countDown();

    65                 }

    66                 if (e.getInt("id") == 2) {

    67                     event2.countDown();

    68                 }

    69             });

    70             es.startAsync();

    71             System.out.println("Started es.startAsync()");

    72 

    73             try (Recording r = new Recording()) {

    74                 r.setFlushInterval(Duration.ofSeconds(1));

    75                 r.start();

    76                 // Chunk in default repository

    77                 MigrationEvent e1 = new MigrationEvent();

    78                 e1.id = 1;

    79                 e1.commit();

    80                 event1.await();

    81                 System.out.println("Passed the event1.await()");

    82                 JcmdHelper.jcmd("JFR.configure", "repositorypath=" + newRepository.toAbsolutePath());

    83                 // Chunk in new repository

    84                 MigrationEvent e2 = new MigrationEvent();

    85                 e2.id = 2;

    86                 e2.commit();

    87                 r.stop();

    88                 event2.await();

    89                 System.out.println("Passed the event2.await()");

    90                 // Verify that it happened in new repository

    91                 if (!Files.exists(newRepository)) {

    92                     throw new AssertionError("Could not find repository " + newRepository);

    93                 }

    94                 System.out.println("Listing contents in new repository:");

    95                 boolean empty = true;

    96                 for (Path p : Files.newDirectoryStream(newRepository)) {

    97                     System.out.println(p.toAbsolutePath());

    98                     empty = false;

    99                 }

   100                 System.out.println();

   101                 if (empty) {

   102                     throw new AssertionError("Could not find contents in new repository location " + newRepository);

   103                 }

   104             }

   105         }

   106     }

   107 

   108 }