| /* |
| * Copyright (c) 2019, 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.consumer.streaming; |
| |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| |
| import jdk.jfr.Event; |
| import jdk.jfr.Recording; |
| import jdk.jfr.consumer.RecordingStream; |
| |
| /** |
| * @test |
| * @summary Verifies that it is possible to start a stream when there are |
| * already chunk in the repository |
| * @key jfr |
| * @requires vm.hasJFR |
| * @library /test/lib |
| * @run main/othervm jdk.jfr.api.consumer.streaming.TestRecordingBefore |
| */ |
| public class TestRecordingBefore { |
| |
| static class SnakeEvent extends Event { |
| int id; |
| } |
| |
| public static void main(String... args) throws Exception { |
| |
| try (Recording r1 = new Recording()) { |
| r1.start(); |
| emitSnakeEvent(1); |
| emitSnakeEvent(2); |
| emitSnakeEvent(3); |
| // Force a chunk rotation |
| try (Recording r2 = new Recording()) { |
| r2.start(); |
| emitSnakeEvent(4); |
| emitSnakeEvent(5); |
| emitSnakeEvent(6); |
| r2.stop(); |
| } |
| r1.stop(); |
| // Two chunks should now exist in the repository |
| AtomicBoolean fail = new AtomicBoolean(false); |
| CountDownLatch lastEvent = new CountDownLatch(1); |
| try (RecordingStream rs = new RecordingStream()) { |
| rs.onEvent(e -> { |
| long id = e.getLong("id"); |
| if (id < 7) { |
| System.out.println("Found unexpected id " + id); |
| fail.set(true); |
| } |
| if (id == 9) { |
| lastEvent.countDown(); |
| } |
| }); |
| rs.startAsync(); |
| emitSnakeEvent(7); |
| emitSnakeEvent(8); |
| emitSnakeEvent(9); |
| lastEvent.await(); |
| if (fail.get()) { |
| throw new Exception("Found events from a previous recording"); |
| } |
| } |
| } |
| } |
| |
| static void emitSnakeEvent(int id) { |
| SnakeEvent e = new SnakeEvent(); |
| e.id = id; |
| e.commit(); |
| } |
| |
| } |