| /* |
| * Copyright (c) 2016, 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. |
| * |
| * 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. |
| * |
| */ |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.nio.file.Path; |
| import java.util.List; |
| |
| import jdk.jfr.Event; |
| import jdk.jfr.EventType; |
| import jdk.jfr.FlightRecorder; |
| import jdk.jfr.Recording; |
| import jdk.jfr.consumer.RecordingFile; |
| import jdk.jfr.consumer.RecordedEvent; |
| |
| public class GetFlightRecorder { |
| private static class TestEvent extends Event { |
| } |
| private static class SimpleEvent extends Event { |
| public int id; |
| } |
| public static void main(String args[]) throws Exception { |
| EventType type = EventType.getEventType(TestEvent.class); // This class is loaded before recording has started. |
| if (type.isEnabled()) { |
| throw new RuntimeException("Expected event to be disabled before recording start"); |
| } |
| |
| // (1) make sure you can obtain the flight recorder without error. |
| System.out.println("jdk.jfr.FlightRecorder.getFlightRecorder() = " + FlightRecorder.getFlightRecorder()); |
| |
| // (2) test that the event class loaded before recording can still work. |
| Recording r = new Recording(); |
| r.start(); |
| if (!type.isEnabled()) { |
| throw new RuntimeException("Expected event to be enabled during recording"); |
| } |
| TestEvent testEvent = new TestEvent(); |
| testEvent.commit(); |
| loadEventClassDuringRecording(); |
| r.stop(); |
| if (type.isEnabled()) { |
| throw new RuntimeException("Expected event to be disabled after recording stopped"); |
| } |
| System.out.println("Checking SimpleEvent"); |
| hasEvent(r, SimpleEvent.class.getName()); |
| System.out.println("OK"); |
| |
| System.out.println("Checking TestEvent"); |
| hasEvent(r, TestEvent.class.getName()); |
| System.out.println("OK"); |
| } |
| |
| // Classes that are loaded during a recording |
| // should get instrumentation on class load |
| private static void loadEventClassDuringRecording() { |
| SimpleEvent event = new SimpleEvent(); |
| event.commit(); |
| } |
| |
| public static List<RecordedEvent> fromRecording(Recording recording) throws IOException { |
| return RecordingFile.readAllEvents(makeCopy(recording)); |
| } |
| |
| private static Path makeCopy(Recording recording) throws IOException { |
| Path p = recording.getDestination(); |
| if (p == null) { |
| File directory = new File("."); |
| // FIXME: Must come up with a way to give human-readable name |
| // this will at least not clash when running parallel. |
| ProcessHandle h = ProcessHandle.current(); |
| p = new File(directory.getAbsolutePath(), "recording-" + recording.getId() + "-pid" + h.pid() + ".jfr").toPath(); |
| recording.dump(p); |
| } |
| return p; |
| } |
| |
| public static void hasEvent(Recording r, String name) throws IOException { |
| List<RecordedEvent> events = fromRecording(r); |
| hasEvents(events); |
| hasEvent(events, name); |
| } |
| |
| public static void hasEvents(List<RecordedEvent> events) { |
| if (events.isEmpty()) { |
| throw new RuntimeException("No events"); |
| } |
| } |
| |
| public static void hasEvent(List<RecordedEvent> events, String name) throws IOException { |
| if (!containsEvent(events, name)) { |
| throw new RuntimeException("Missing event " + name + " in recording " + events.toString()); |
| } |
| } |
| |
| private static boolean containsEvent(List<RecordedEvent> events, String name) { |
| for (RecordedEvent event : events) { |
| if (event.getEventType().getName().equals(name)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| } |