1 /*
   2  * Copyright (c) 2018, 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.recording.dump;
  27 
  28 import java.io.IOException;
  29 import java.nio.file.Files;
  30 import java.nio.file.Path;
  31 import java.nio.file.Paths;
  32 import java.util.ArrayList;
  33 import java.util.List;
  34 
  35 import jdk.jfr.Recording;
  36 import jdk.jfr.consumer.RecordedEvent;
  37 import jdk.jfr.consumer.RecordingFile;
  38 import jdk.testlibrary.Asserts;
  39 import jdk.testlibrary.jfr.CommonHelper;
  40 import jdk.testlibrary.jfr.Events;
  41 import jdk.testlibrary.jfr.SimpleEvent;
  42 import jdk.testlibrary.jfr.SimpleEventHelper;
  43 import jdk.testlibrary.jfr.VoidFunction;
  44 
  45 /*
  46  * @test
  47  * @summary call copyTo() with recording in all states.
  48  * @key jfr
  49  * @library /lib/testlibrary
  50  * @run main/othervm jdk.jfr.api.recording.dump.TestDumpState
  51  */
  52 public class TestDumpState {
  53 
  54     public static void main(String[] args) throws Throwable {
  55         Recording r = new Recording();
  56         SimpleEventHelper.enable(r, true);
  57 
  58         List<Integer> expectedIds = new ArrayList<>();
  59 
  60         SimpleEventHelper.createEvent(0); // Recording not started, should not be included.
  61         verifyIOException(()->{checkEvents(r, expectedIds);}, "No Exception when dump() not started");
  62 
  63         r.start();
  64         SimpleEventHelper.createEvent(1);
  65         expectedIds.add(1);
  66         checkEvents(r, expectedIds);
  67 
  68         SimpleEventHelper.createEvent(2);
  69         expectedIds.add(2);
  70         checkEvents(r, expectedIds);
  71 
  72         r.stop();
  73         checkEvents(r, expectedIds);
  74 
  75         SimpleEventHelper.createEvent(3); // Recording stopped, should not be included.
  76         checkEvents(r, expectedIds);
  77 
  78         r.close();
  79         SimpleEventHelper.createEvent(4);
  80         verifyIOException(()->{checkEvents(r, expectedIds);}, "No Exception when dump() closed");
  81     }
  82 
  83     private static int recordingCounter = 0;
  84     private static void checkEvents(Recording r, List<Integer> expectedIds) throws Exception {
  85         Path path = Paths.get(".", String.format("%d.jfr", recordingCounter++));
  86         r.dump(path);
  87         Asserts.assertTrue(Files.exists(path), "Recording file does not exist: " + path);
  88 
  89         int index = 0;
  90 
  91         for (RecordedEvent event : RecordingFile.readAllEvents(path)) {
  92             Events.isEventType(event, SimpleEvent.class.getName());
  93             Integer id = Events.assertField(event, "id").getValue();
  94             System.out.println("Got event with id " + id);
  95             Asserts.assertGreaterThan(expectedIds.size(), index, "Too many Events found");
  96             Asserts.assertEquals(id, expectedIds.get(index), "Wrong id at index " + index);
  97             ++index;
  98         }
  99         Asserts.assertEquals(index, expectedIds.size(), "Too few Events found");
 100     }
 101 
 102     private static void verifyIOException(VoidFunction f, String msg) throws Throwable {
 103         CommonHelper.verifyException(f, msg, IOException.class);
 104     }
 105 
 106 }