Java Code Examples for jdk.management.jfr.FlightRecorderMXBean#newRecording()

public static void main(String[] args) throws Throwable {
    FlightRecorderMXBean bean = JmxHelper.getFlighteRecorderMXBean();
    long recId = bean.newRecording();
    bean.startRecording(recId);

    // TODO: Remove debug logs
    List<ConfigurationInfo> configs = bean.getConfigurations();
    for (ConfigurationInfo config : configs) {
        System.out.println("config=" + config.toString());
    }
    Map<String, String> settings = bean.getRecordingSettings(recId);
    for (String key : settings.keySet()) {
        System.out.println("setting: " + key + "=" + settings.get(key));
    }
    List<EventTypeInfo> types = bean.getEventTypes();
    for (EventTypeInfo type : types) {
        System.out.println("type=" + type.getName());
    }
    //////////////////////

    bean.stopRecording(recId);
    bean.closeRecording(recId);
}
 

public static void main(String[] args) throws Exception {
    FlightRecorderMXBean bean = JmxHelper.getFlighteRecorderMXBean();

    long recId = bean.newRecording();
    bean.startRecording(recId);
    SimpleEventHelper.createEvent(1);
    bean.stopRecording(recId);

    Path path = Paths.get(".", "my.jfr");
    bean.copyTo(recId, path.toString());

    List<RecordedEvent> events = RecordingFile.readAllEvents(path);
    Asserts.assertTrue(events.iterator().hasNext(), "No events found");
    for (RecordedEvent event : events) {
        System.out.println("Event:" + event);
    }

    bean.closeRecording(recId);
}
 

public static void main(String[] args) throws Throwable {
    FlightRecorderMXBean bean = JmxHelper.getFlighteRecorderMXBean();

    long recId = bean.newRecording();
    bean.startRecording(recId);
    SimpleEventHelper.createEvent(1);
    bean.stopRecording(recId);

    CommonHelper.verifyException(()->{bean.copyTo(recId, null);}, "copyTo(null)", NullPointerException.class);
    CommonHelper.verifyException(()->{bean.copyTo(recId, "");}, "copyTo('')", IOException.class);

    String p = Paths.get(".", "thisdir", "doesnot", "exists").toString();
    CommonHelper.verifyException(()->{bean.copyTo(recId, p);}, "copyTo(dirNotExist)", IOException.class);

    bean.closeRecording(recId);
}
 

public static void main(String[] args) throws Throwable {
    FlightRecorderMXBean bean = JmxHelper.getFlighteRecorderMXBean();

    List<RecordingInfo> preCreateRecordings = bean.getRecordings();
    long recId = bean.newRecording();
    JmxHelper.verifyNotExists(recId, preCreateRecordings);
    JmxHelper.verifyState(recId, RecordingState.NEW, bean);

    bean.startRecording(recId);
    JmxHelper.verifyState(recId, RecordingState.RUNNING, bean);

    bean.stopRecording(recId);
    JmxHelper.verifyState(recId, RecordingState.STOPPED, bean);

    bean.closeRecording(recId);
    JmxHelper.verifyNotExists(recId, bean.getRecordings());
}
 

public static void main(String[] args) throws Throwable {
    FlightRecorderMXBean bean = JmxHelper.getFlighteRecorderMXBean();

    long recId = bean.newRecording();
    bean.startRecording(recId);
    SimpleEventHelper.createEvent(1);
    bean.stopRecording(recId);

    CommonHelper.verifyException(()->{bean.copyTo(recId, null);}, "copyTo(null)", NullPointerException.class);
    CommonHelper.verifyException(()->{bean.copyTo(recId, "");}, "copyTo('')", IOException.class);

    String p = Paths.get(".", "thisdir", "doesnot", "exists").toString();
    CommonHelper.verifyException(()->{bean.copyTo(recId, p);}, "copyTo(dirNotExist)", IOException.class);

    bean.closeRecording(recId);
}
 

private static long testRecording(FlightRecorderMXBean bean) throws Exception {
    System.out.println("A");
    long recId = bean.newRecording();
    System.out.println("B");
    bean.setPredefinedConfiguration(recId, "profile");
    System.out.println("C");
    bean.startRecording(recId);
    System.out.println("D");
    Asserts.assertTrue(bean.getRecordings().stream().anyMatch(r -> { return r.getId() == recId; }), "recId not found");
    System.out.println("E");
    bean.stopRecording(recId);

    final Path path = Paths.get(".", "rec" + recId + ".jfr");
    bean.copyTo(recId, path.toString());
    //EventSet events = EventSet.fromFile(path);
    return recId;
}
 

public static void main(String[] args) throws Exception {
    FlightRecorderMXBean bean = JmxHelper.getFlighteRecorderMXBean();

    long recId = bean.newRecording();
    bean.startRecording(recId);
    SimpleEventHelper.createEvent(1);
    bean.stopRecording(recId);

    Path path = Paths.get(".", "my.jfr");
    bean.copyTo(recId, path.toString());

    List<RecordedEvent> events = RecordingFile.readAllEvents(path);
    Asserts.assertTrue(events.iterator().hasNext(), "No events found");
    for (RecordedEvent event : events) {
        System.out.println("Event:" + event);
    }

    bean.closeRecording(recId);
}
 

public static void main(String[] args) throws Throwable {
    FlightRecorderMXBean bean =JmxHelper.getFlighteRecorderMXBean();

    List<RecordingInfo> preCreateRecordings = bean.getRecordings();
    long recId = bean.newRecording();
    JmxHelper.verifyNotExists(recId, preCreateRecordings);
    bean.closeRecording(recId);
    JmxHelper.verifyNotExists(recId, bean.getRecordings());
}
 

public static void main(String[] args) throws Exception {
    FlightRecorderMXBean bean = JmxHelper.getFlighteRecorderMXBean();

    long orgId = bean.newRecording();
    bean.startRecording(orgId);
    SimpleEventHelper.createEvent(1); // Should be in both org and clone

    long cloneId = bean.cloneRecording(orgId, false);
    Asserts.assertNotEquals(orgId, cloneId, "clone id should not be same as org id");

    List<RecordingInfo> recordings = bean.getRecordings();
    JmxHelper.verifyState(orgId, RecordingState.RUNNING, recordings);
    JmxHelper.verifyState(cloneId, RecordingState.RUNNING, recordings);

    bean.stopRecording(orgId);
    recordings = bean.getRecordings();
    JmxHelper.verifyState(orgId, RecordingState.STOPPED, recordings);
    JmxHelper.verifyState(cloneId, RecordingState.RUNNING, recordings);

    SimpleEventHelper.createEvent(2);  // Should only be in clone

    bean.stopRecording(cloneId);
    recordings = bean.getRecordings();
    JmxHelper.verifyState(orgId, RecordingState.STOPPED, recordings);
    JmxHelper.verifyState(cloneId, RecordingState.STOPPED, recordings);

    Path orgPath = Paths.get(".", "org.jfr");
    Path clonePath = Paths.get(".", "clone.jfr");
    bean.copyTo(orgId, orgPath.toString());
    bean.copyTo(cloneId, clonePath.toString());

    verifyEvents(orgPath, 1);
    verifyEvents(clonePath, 1, 2);

    bean.closeRecording(orgId);
    bean.closeRecording(cloneId);
}
 

private static long createRecording(FlightRecorderMXBean bean) throws Exception {
    List<RecordingInfo> preCreateRecordings = bean.getRecordings();
    long recId = bean.newRecording();
    JmxHelper.verifyNotExists(recId, preCreateRecordings);
    JmxHelper.verifyState(recId, RecordingState.NEW, bean);
    return recId;
}
 

public static void main(String[] args) throws Exception {
    Map<String, String> settings = new HashMap<>();
    settings.put(null, "true");
    settings.put("java.exception_throw#stackTrace", null);
    settings.put("java.exception_throw#threshold", "not-a-number");
    settings.put("os.information#period", "4 x");

    // TODO: No exception for these settings. Not sure how much validation can be done on settings.
    //settings.put("java.exception_throw#enabled", "maybe");
    //settings.put("os.information#period", "-4 s");
    //settings.put("java.exception_throw#thread", "");
    //settings.put("", "true");
    //settings.put("os.information#what", "4 ms");
    //settings.put("#", "4 what");
    //settings.put("java.exception_throw#", "true");
    //settings.put("java.exception_throwenabled", "false");

    FlightRecorderMXBean bean = JmxHelper.getFlighteRecorderMXBean();

    for (String key : settings.keySet()) {
        System.out.printf("settings: %s=%s%n", key, settings.get(key));
        Map<String, String> temp = new HashMap<String, String>();
        temp.put(key, settings.get(key));
        long recId = -1;
        try {
            recId = bean.newRecording();
            bean.setRecordingSettings(recId, temp);
            bean.startRecording(recId);
            bean.stopRecording(recId);
            Asserts.fail("Missing exception");
        } catch (Exception e) {
            System.out.println("Got expected exception: " + e.getMessage());
        } finally {
            bean.closeRecording(recId);
        }
    }
}
 

public static void main(String[] args) throws Exception {
    Map<String, String> settings = new HashMap<>();
    settings.put(null, "true");
    settings.put("java.exception_throw#stackTrace", null);
    settings.put("java.exception_throw#threshold", "not-a-number");
    settings.put("os.information#period", "4 x");

    // TODO: No exception for these settings. Not sure how much validation can be done on settings.
    //settings.put("java.exception_throw#enabled", "maybe");
    //settings.put("os.information#period", "-4 s");
    //settings.put("java.exception_throw#thread", "");
    //settings.put("", "true");
    //settings.put("os.information#what", "4 ms");
    //settings.put("#", "4 what");
    //settings.put("java.exception_throw#", "true");
    //settings.put("java.exception_throwenabled", "false");

    FlightRecorderMXBean bean = JmxHelper.getFlighteRecorderMXBean();

    for (String key : settings.keySet()) {
        System.out.printf("settings: %s=%s%n", key, settings.get(key));
        Map<String, String> temp = new HashMap<String, String>();
        temp.put(key, settings.get(key));
        long recId = -1;
        try {
            recId = bean.newRecording();
            bean.setRecordingSettings(recId, temp);
            bean.startRecording(recId);
            bean.stopRecording(recId);
            Asserts.fail("Missing exception");
        } catch (Exception e) {
            System.out.println("Got expected exception: " + e.getMessage());
        } finally {
            bean.closeRecording(recId);
        }
    }
}
 

public static void main(String[] args) throws Exception {
    FlightRecorderMXBean bean = JmxHelper.getFlighteRecorderMXBean();

    long orgId = bean.newRecording();
    bean.startRecording(orgId);
    SimpleEventHelper.createEvent(1); // Should be in both org and clone

    long cloneId = bean.cloneRecording(orgId, false);
    Asserts.assertNotEquals(orgId, cloneId, "clone id should not be same as org id");

    List<RecordingInfo> recordings = bean.getRecordings();
    JmxHelper.verifyState(orgId, RecordingState.RUNNING, recordings);
    JmxHelper.verifyState(cloneId, RecordingState.RUNNING, recordings);

    bean.stopRecording(orgId);
    recordings = bean.getRecordings();
    JmxHelper.verifyState(orgId, RecordingState.STOPPED, recordings);
    JmxHelper.verifyState(cloneId, RecordingState.RUNNING, recordings);

    SimpleEventHelper.createEvent(2);  // Should only be in clone

    bean.stopRecording(cloneId);
    recordings = bean.getRecordings();
    JmxHelper.verifyState(orgId, RecordingState.STOPPED, recordings);
    JmxHelper.verifyState(cloneId, RecordingState.STOPPED, recordings);

    Path orgPath = Paths.get(".", "org.jfr");
    Path clonePath = Paths.get(".", "clone.jfr");
    bean.copyTo(orgId, orgPath.toString());
    bean.copyTo(cloneId, clonePath.toString());

    verifyEvents(orgPath, 1);
    verifyEvents(clonePath, 1, 2);

    bean.closeRecording(orgId);
    bean.closeRecording(cloneId);
}
 

public static void main(String[] args) throws Exception {
    FlightRecorderMXBean bean = JmxHelper.getFlighteRecorderMXBean();

    SimpleEventHelper.createEvent(0); // No recordings

    long recIdA = bean.newRecording();

    bean.startRecording(recIdA);
    SimpleEventHelper.createEvent(1); // recA

    long recIdB = bean.newRecording();
    Asserts.assertNotEquals(recIdA, recIdB, "Recording Ids should be unique");
    bean.startRecording(recIdB);
    SimpleEventHelper.createEvent(2); // recA and recB

    bean.stopRecording(recIdA);
    SimpleEventHelper.createEvent(3); // recB

    bean.stopRecording(recIdB);
    SimpleEventHelper.createEvent(4); // No recordings

    // Check recA
    long streamIdA = bean.openStream(recIdA, null);
    List<RecordedEvent> events = JmxHelper.parseStream(streamIdA, bean);
    SimpleEventHelper.verifyContains(events, 1, 2);
    SimpleEventHelper.verifyNotContains(events, 0, 3, 4);
    bean.closeStream(streamIdA);
    // check recB
    long streamIdB = bean.openStream(recIdB, null);
    events = JmxHelper.parseStream(streamIdB, bean);
    SimpleEventHelper.verifyContains(events, 2, 3);
    SimpleEventHelper.verifyNotContains(events, 0, 1, 4);
    bean.closeStream(streamIdB);

    bean.closeRecording(recIdA);
    bean.closeRecording(recIdB);
}
 

public static void main(String[] args) throws Exception {
    FlightRecorderMXBean bean = JmxHelper.getFlighteRecorderMXBean();

    SimpleEventHelper.createEvent(0); // No recordings

    long recIdA = bean.newRecording();

    bean.startRecording(recIdA);
    SimpleEventHelper.createEvent(1); // recA

    long recIdB = bean.newRecording();
    Asserts.assertNotEquals(recIdA, recIdB, "Recording Ids should be unique");
    bean.startRecording(recIdB);
    SimpleEventHelper.createEvent(2); // recA and recB

    bean.stopRecording(recIdA);
    SimpleEventHelper.createEvent(3); // recB

    bean.stopRecording(recIdB);
    SimpleEventHelper.createEvent(4); // No recordings

    // Check recA
    long streamIdA = bean.openStream(recIdA, null);
    List<RecordedEvent> events = JmxHelper.parseStream(streamIdA, bean);
    SimpleEventHelper.verifyContains(events, 1, 2);
    SimpleEventHelper.verifyNotContains(events, 0, 3, 4);
    bean.closeStream(streamIdA);
    // check recB
    long streamIdB = bean.openStream(recIdB, null);
    events = JmxHelper.parseStream(streamIdB, bean);
    SimpleEventHelper.verifyContains(events, 2, 3);
    SimpleEventHelper.verifyNotContains(events, 0, 1, 4);
    bean.closeStream(streamIdB);

    bean.closeRecording(recIdA);
    bean.closeRecording(recIdB);
}
 

public static void main(String[] args) throws Throwable {
    FlightRecorderMXBean bean = JmxHelper.getFlighteRecorderMXBean();

    long recId = bean.newRecording();

    // Test invalid named configs.
    verifyNullPointer(()->{ bean.setPredefinedConfiguration(recId, null); }, "setNamedConfig(null)");
    setInvalidConfigName(recId, "");
    setInvalidConfigName(recId, "invalidname");

    // Verify we can set named config after failed attempts.
    Configuration config = Configuration.getConfigurations().get(0);
    bean.setPredefinedConfiguration(recId, config.getName());
    JmxHelper.verifyMapEquals(bean.getRecordingSettings(recId), config.getSettings());
}
 

private static long createRecording(FlightRecorderMXBean bean) throws Exception {
    List<RecordingInfo> preCreateRecordings = bean.getRecordings();
    long recId = bean.newRecording();
    JmxHelper.verifyNotExists(recId, preCreateRecordings);
    JmxHelper.verifyState(recId, RecordingState.NEW, bean);
    return recId;
}
 

public static void main(String[] args) throws Throwable {
    FlightRecorderMXBean bean = JmxHelper.getFlighteRecorderMXBean();

    long recId = bean.newRecording();
    bean.startRecording(recId);
    SimpleEventHelper.createEvent(1);
    bean.stopRecording(recId);

    Path readOnlyDir = FileHelper.createReadOnlyDir(Paths.get(".", "readOnlyDir"));
    System.out.println("readOnlyDir=" + readOnlyDir.toString());
    Asserts.assertTrue(readOnlyDir.toFile().isDirectory(), "Could not create directory. Test error");
    if (!FileHelper.isReadOnlyPath(readOnlyDir)) {
        System.out.println("Failed to create read-only dir. Maybe running as root? Skipping test");
        return;
    }

    Path file = Paths.get(readOnlyDir.toString(), "my.jfr");
    System.out.println("file=" + file.toString());
    try {
        bean.copyTo(recId, file.toString());
        Asserts.fail("Should be able to dump to read only file");
    } catch (AccessDeniedException e) {
        // ok as expected
    }

    bean.closeRecording(recId);
}
 

public static void main(String[] args) throws Throwable {
    FlightRecorderMXBean bean = JmxHelper.getFlighteRecorderMXBean();

    long recId = bean.newRecording();
    bean.startRecording(recId);
    SimpleEventHelper.createEvent(1);
    bean.stopRecording(recId);

    Path readOnlyDir = FileHelper.createReadOnlyDir(Paths.get(".", "readOnlyDir"));
    System.out.println("readOnlyDir=" + readOnlyDir.toString());
    Asserts.assertTrue(readOnlyDir.toFile().isDirectory(), "Could not create directory. Test error");
    if (!FileHelper.isReadOnlyPath(readOnlyDir)) {
        System.out.println("Failed to create read-only dir. Maybe running as root? Skipping test");
        return;
    }

    Path file = Paths.get(readOnlyDir.toString(), "my.jfr");
    System.out.println("file=" + file.toString());
    try {
        bean.copyTo(recId, file.toString());
        Asserts.fail("Should be able to dump to read only file");
    } catch (AccessDeniedException e) {
        // ok as expected
    }

    bean.closeRecording(recId);
}
 

public static void main(String[] args) throws Exception {
    Map<String, String> settingsA = new HashMap<>();
    settingsA.put("java.exception_throw#enabled", "false");
    settingsA.put("java.exception_throw#threshold", "2 s");
    settingsA.put("java.exception_throw#thread", "true");
    settingsA.put("java.exception_throw#stackTrace", "false");
    settingsA.put("os.information#enabled", "true");
    settingsA.put("os.information#period", "400 ms");

    Map<String, String> settingsB = new HashMap<>();
    settingsB.put("vm/code_sweeper/config#enabled", "true");
    settingsB.put("vm/code_sweeper/config#period", "everyChunk");
    settingsA.put("java.exception_throw#enabled", "true");
    settingsA.put("java.exception_throw#threshold", "6 m");
    settingsB.put("os.information#enabled", "true");
    settingsB.put("os.information#period", "0 ms");

    FlightRecorderMXBean bean = JmxHelper.getFlighteRecorderMXBean();
    long recIdA = bean.newRecording();
    long recIdB = bean.newRecording();
    bean.setRecordingSettings(recIdA, settingsA);
    bean.setRecordingSettings(recIdB, settingsB);

    JmxHelper.verifyMapEquals(settingsA, bean.getRecordingSettings(recIdA));
    JmxHelper.verifyMapEquals(settingsB, bean.getRecordingSettings(recIdB));
    JmxHelper.verifyMapEquals(settingsA, JmxHelper.getJavaRecording(recIdA).getSettings());
    JmxHelper.verifyMapEquals(settingsB, JmxHelper.getJavaRecording(recIdB).getSettings());

    bean.startRecording(recIdA);
    bean.startRecording(recIdB);
    JmxHelper.verifyMapEquals(settingsA, bean.getRecordingSettings(recIdA));
    JmxHelper.verifyMapEquals(settingsB, bean.getRecordingSettings(recIdB));
    JmxHelper.verifyMapEquals(settingsA, JmxHelper.getJavaRecording(recIdA).getSettings());
    JmxHelper.verifyMapEquals(settingsB, JmxHelper.getJavaRecording(recIdB).getSettings());

    bean.stopRecording(recIdA);
    bean.stopRecording(recIdB);
    JmxHelper.verifyMapEquals(settingsA, bean.getRecordingSettings(recIdA));
    JmxHelper.verifyMapEquals(settingsB, bean.getRecordingSettings(recIdB));
    JmxHelper.verifyMapEquals(settingsA, JmxHelper.getJavaRecording(recIdA).getSettings());
    JmxHelper.verifyMapEquals(settingsB, JmxHelper.getJavaRecording(recIdB).getSettings());

    bean.closeRecording(recIdA);
    bean.closeRecording(recIdB);
}