1 /* 2 * Copyright (c) 2018, 2019, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package jdk.jfr.api.recording.event; 27 28 import java.nio.file.Files; 29 import java.nio.file.Path; 30 import java.nio.file.Paths; 31 32 import jdk.jfr.Recording; 33 import jdk.jfr.consumer.RecordedEvent; 34 import jdk.testlibrary.Asserts; 35 import jdk.testlibrary.jfr.EventNames; 36 import jdk.testlibrary.jfr.Events; 37 38 /* 39 * @test 40 * @summary Enable/disable event by name during recording. 41 * @key jfr 42 * @library /lib/testlibrary 43 * @run main/othervm jdk.jfr.api.recording.event.TestReEnableName 44 */ 45 public class TestReEnableName { 46 47 public static void main(String[] args) throws Throwable { 48 testRecordingWithEnabledEvent(EventNames.FileWrite, false); 49 testRecordingWithEnabledEvent(EventNames.FileWrite, true); 50 } 51 52 // Loop and enable/disable events. Create events each loop. 53 // Verify we only get events created during enabled. 54 private static void testRecordingWithEnabledEvent(String eventname, boolean enabled) throws Exception { 55 System.out.println("Testing enabled=" + enabled + " for " + eventname); 56 final Path pathDisabled = Paths.get(".", "disabled.txt").toAbsolutePath(); 57 final Path pathEnabled = Paths.get(".", "enabled.txt").toAbsolutePath(); 58 59 Recording r = new Recording(); 60 if (enabled) { 61 r.enable(eventname).withoutThreshold().withoutStackTrace(); 62 } else { 63 r.disable(eventname).withoutThreshold().withoutStackTrace(); 64 } 65 r.start(); 66 67 // We should only get events for pathEnabled, not for pathDisabled. 68 int countExpectedEvents = 0; 69 for (int i = 0; i < 10; ++i) { 70 if (enabled) { 71 Files.write(pathEnabled, "E".getBytes()); 72 ++countExpectedEvents; 73 r.disable(eventname); 74 } else { 75 Files.write(pathDisabled, "D".getBytes()); 76 r.enable(eventname); 77 } 78 enabled = !enabled; 79 } 80 r.stop(); 81 82 int countFoundEvents = 0; 83 for (RecordedEvent event : Events.fromRecording(r)) { 84 System.out.printf("Event %s%n", event); 85 Asserts.assertEquals(eventname, event.getEventType().getName(), "Wrong event type"); 86 String path = Events.assertField(event, "path").getValue(); 87 System.out.println(path); 88 if (pathEnabled.toString().equals(path)) { 89 ++countFoundEvents; 90 } 91 } 92 Asserts.assertGreaterThanOrEqual(countFoundEvents, countExpectedEvents, "Too few events found"); 93 94 r.close(); 95 } 96 }