| /* |
| * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package jdk.jfr.api.flightrecorder; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.time.Duration; |
| import java.time.Instant; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import jdk.jfr.FlightRecorder; |
| import jdk.jfr.Recording; |
| import jdk.jfr.RecordingState; |
| import jdk.jfr.consumer.RecordedEvent; |
| import jdk.test.lib.Asserts; |
| import jdk.test.lib.jfr.Events; |
| import jdk.test.lib.jfr.SimpleEvent; |
| |
| /** |
| * @test |
| * @key jfr |
| * @requires vm.hasJFR |
| * @library /test/lib |
| * @run main/othervm jdk.jfr.api.flightrecorder.TestSnapshot |
| */ |
| public class TestSnapshot { |
| private final static int RECORDING_COUNT = 5; |
| |
| public static void main(String[] args) throws Exception { |
| testEmpty(); |
| testStopped(); |
| testOngoingDisk(); |
| testOngoingMemory(); |
| testMultiple(); |
| } |
| |
| private static void testMultiple() throws IOException { |
| FlightRecorder recorder = FlightRecorder.getFlightRecorder(); |
| List<Recording> recordings = new ArrayList<>(); |
| long size = 0; |
| for (int i = 0; i < RECORDING_COUNT; i++) { |
| Recording r = new Recording(); |
| r.enable(SimpleEvent.class); |
| r.start(); |
| SimpleEvent se = new SimpleEvent(); |
| se.commit(); |
| r.stop(); |
| recordings.add(r); |
| size += r.getSize(); |
| } |
| try (Recording snapshot = recorder.takeSnapshot()) { |
| Asserts.assertEquals(snapshot.getSize(), size); |
| Asserts.assertGreaterThanOrEqual(snapshot.getStartTime(), recordings.get(0).getStartTime()); |
| Asserts.assertLessThanOrEqual(snapshot.getStopTime(), recordings.get(RECORDING_COUNT - 1).getStopTime()); |
| Asserts.assertGreaterThanOrEqual(snapshot.getDuration(), Duration.ZERO); |
| assertStaticOptions(snapshot); |
| try (InputStream is = snapshot.getStream(null, null)) { |
| Asserts.assertNotNull(is); |
| } |
| |
| List<RecordedEvent> events = Events.fromRecording(snapshot); |
| Events.hasEvents(events); |
| Asserts.assertEquals(events.size(), RECORDING_COUNT); |
| for (int i = 0; i < RECORDING_COUNT; i++) { |
| Asserts.assertEquals(events.get(i).getEventType().getName(), SimpleEvent.class.getName()); |
| } |
| } |
| for (Recording r : recordings) { |
| r.close(); |
| } |
| } |
| private static void testOngoingMemory() throws IOException { |
| testOngoing(false); |
| } |
| |
| private static void testOngoingDisk() throws IOException { |
| testOngoing(true); |
| } |
| |
| private static void testOngoing(boolean disk) throws IOException { |
| FlightRecorder recorder = FlightRecorder.getFlightRecorder(); |
| try (Recording r = new Recording()) { |
| r.setToDisk(disk); |
| r.enable(SimpleEvent.class); |
| r.start(); |
| SimpleEvent se = new SimpleEvent(); |
| se.commit(); |
| |
| try (Recording snapshot = recorder.takeSnapshot()) { |
| |
| Asserts.assertGreaterThan(snapshot.getSize(), 0L); |
| Asserts.assertGreaterThanOrEqual(snapshot.getStartTime(), r.getStartTime()); |
| Asserts.assertGreaterThanOrEqual(snapshot.getStopTime(), r.getStartTime()); |
| Asserts.assertGreaterThanOrEqual(snapshot.getDuration(), Duration.ZERO); |
| assertStaticOptions(snapshot); |
| try (InputStream is = snapshot.getStream(null, null)) { |
| Asserts.assertNotNull(is); |
| } |
| |
| List<RecordedEvent> events = Events.fromRecording(snapshot); |
| Events.hasEvents(events); |
| Asserts.assertEquals(events.size(), 1); |
| Asserts.assertEquals(events.get(0).getEventType().getName(), SimpleEvent.class.getName()); |
| } |
| |
| r.stop(); |
| } |
| } |
| |
| private static void assertStaticOptions(Recording snapshot) { |
| Asserts.assertTrue(snapshot.getName().startsWith("Snapshot"), "Recording name should begin with 'Snapshot'"); |
| Asserts.assertEquals(snapshot.getMaxAge(), null); |
| Asserts.assertEquals(snapshot.getMaxSize(), 0L); |
| Asserts.assertTrue(snapshot.getSettings().isEmpty()); |
| Asserts.assertEquals(snapshot.getState(), RecordingState.STOPPED); |
| Asserts.assertEquals(snapshot.getDumpOnExit(), false); |
| Asserts.assertEquals(snapshot.getDestination(), null); |
| } |
| |
| private static void testStopped() throws IOException { |
| FlightRecorder recorder = FlightRecorder.getFlightRecorder(); |
| try (Recording r = new Recording()) { |
| r.enable(SimpleEvent.class); |
| r.start(); |
| SimpleEvent se = new SimpleEvent(); |
| se.commit(); |
| r.stop(); |
| |
| try (Recording snapshot = recorder.takeSnapshot()) { |
| |
| Asserts.assertEquals(snapshot.getSize(), r.getSize()); |
| Asserts.assertGreaterThanOrEqual(snapshot.getStartTime(), r.getStartTime()); |
| Asserts.assertLessThanOrEqual(snapshot.getStopTime(), r.getStopTime()); |
| Asserts.assertGreaterThanOrEqual(snapshot.getDuration(), Duration.ZERO); |
| assertStaticOptions(snapshot); |
| try (InputStream is = snapshot.getStream(null, null)) { |
| Asserts.assertNotNull(is); |
| } |
| |
| List<RecordedEvent> events = Events.fromRecording(snapshot); |
| Events.hasEvents(events); |
| Asserts.assertEquals(events.size(), 1); |
| Asserts.assertEquals(events.get(0).getEventType().getName(), SimpleEvent.class.getName()); |
| } |
| } |
| } |
| |
| private static void testEmpty() throws IOException { |
| FlightRecorder recorder = FlightRecorder.getFlightRecorder(); |
| Instant before = Instant.now().minusNanos(1); |
| try (Recording snapshot = recorder.takeSnapshot()) { |
| Instant after = Instant.now().plusNanos(1); |
| Asserts.assertEquals(snapshot.getSize(), 0L); |
| Asserts.assertLessThan(before, snapshot.getStartTime()); |
| Asserts.assertGreaterThan(after, snapshot.getStopTime()); |
| Asserts.assertEquals(snapshot.getStartTime(), snapshot.getStopTime()); |
| Asserts.assertEquals(snapshot.getDuration(), Duration.ZERO); |
| assertStaticOptions(snapshot); |
| Asserts.assertEquals(snapshot.getStream(null, null), null); |
| } |
| } |
| |
| } |