1 /*
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3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
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23 
24 package jdk.jfr.jmx;
25 
26 import java.nio.file.Path;
27 import java.nio.file.Paths;
28 import java.util.List;
29 
30 import jdk.jfr.FlightRecorder;
31 import jdk.jfr.Recording;
32 import jdk.jfr.RecordingState;
33 import jdk.jfr.consumer.RecordedEvent;
34 import jdk.jfr.consumer.RecordingFile;
35 import jdk.management.jfr.FlightRecorderMXBean;
36 import jdk.test.lib.Asserts;
37 import jdk.test.lib.jfr.SimpleEventHelper;
38 
39 /**
40  * @test
41  * @key jfr
42  * @summary Copy a recording to file while it is running.
43  * @requires vm.hasJFR
44  * @library /test/lib /test/jdk
45  * @run main/othervm jdk.jfr.jmx.TestCopyToRunning
46  */
47 public class TestCopyToRunning {
main(String[] args)48     public static void main(String[] args) throws Exception {
49         FlightRecorderMXBean bean = JmxHelper.getFlighteRecorderMXBean();
50 
51         long recId = bean.newRecording();
52         bean.startRecording(recId);
53         SimpleEventHelper.createEvent(1);
54 
55         Path path = Paths.get(".", "my.jfr");
56         bean.copyTo(recId, path.toString());
57 
58         List<RecordedEvent> events = RecordingFile.readAllEvents(path);
59         Asserts.assertTrue(events.iterator().hasNext(), "No events found");
60         for (RecordedEvent event : events) {
61             System.out.println("Event:" + event);
62         }
63 
64         Recording recording = getRecording(recId);
65         Asserts.assertEquals(recording.getState(), RecordingState.RUNNING, "Recording not in state running");
66         bean.stopRecording(recId);
67         Asserts.assertEquals(recording.getState(), RecordingState.STOPPED, "Recording not in state stopped");
68         bean.closeRecording(recId);
69         Asserts.assertEquals(recording.getState(), RecordingState.CLOSED, "Recording not in state closed");
70     }
71 
getRecording(long recId)72     private static Recording getRecording(long recId) {
73         for (Recording r : FlightRecorder.getFlightRecorder().getRecordings()) {
74             if (r.getId() == recId) {
75                 return r;
76             }
77         }
78         Asserts.fail("Could not find recording with id " + recId);
79         return null;
80     }
81 }
82