1 /*
   2  * Copyright (c) 2013, 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.jmx;
  27 
  28 import java.nio.file.Path;
  29 import java.nio.file.Paths;
  30 import java.util.List;
  31 
  32 import jdk.jfr.FlightRecorder;
  33 import jdk.jfr.Recording;
  34 import jdk.jfr.RecordingState;
  35 import jdk.jfr.consumer.RecordedEvent;
  36 import jdk.jfr.consumer.RecordingFile;
  37 import jdk.management.jfr.FlightRecorderMXBean;
  38 import jdk.test.lib.Asserts;
  39 import jdk.test.lib.jfr.SimpleEventHelper;
  40 
  41 /**
  42  * @test
  43  * @key jfr
  44  * @summary Copy a recording to file while it is running.
  45  *
  46  * @library /lib /
  47  * @run main/othervm jdk.jfr.jmx.TestCopyToRunning
  48  */
  49 public class TestCopyToRunning {
  50     public static void main(String[] args) throws Exception {
  51         FlightRecorderMXBean bean = JmxHelper.getFlighteRecorderMXBean();
  52 
  53         long recId = bean.newRecording();
  54         bean.startRecording(recId);
  55         SimpleEventHelper.createEvent(1);
  56 
  57         Path path = Paths.get(".", "my.jfr");
  58         bean.copyTo(recId, path.toString());
  59 
  60         List<RecordedEvent> events = RecordingFile.readAllEvents(path);
  61         Asserts.assertTrue(events.iterator().hasNext(), "No events found");
  62         for (RecordedEvent event : events) {
  63             System.out.println("Event:" + event);
  64         }
  65 
  66         Recording recording = getRecording(recId);
  67         Asserts.assertEquals(recording.getState(), RecordingState.RUNNING, "Recording not in state running");
  68         bean.stopRecording(recId);
  69         Asserts.assertEquals(recording.getState(), RecordingState.STOPPED, "Recording not in state stopped");
  70         bean.closeRecording(recId);
  71         Asserts.assertEquals(recording.getState(), RecordingState.CLOSED, "Recording not in state closed");
  72     }
  73 
  74     private static Recording getRecording(long recId) {
  75         for (Recording r : FlightRecorder.getFlightRecorder().getRecordings()) {
  76             if (r.getId() == recId) {
  77                 return r;
  78             }
  79         }
  80         Asserts.fail("Could not find recording with id " + recId);
  81         return null;
  82     }
  83 }