1 /*
   2  * Copyright (c) 2018, 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.event;
  27 
  28 import java.util.ArrayList;
  29 import java.util.Collections;
  30 import java.util.List;
  31 
  32 import jdk.jfr.AnnotationElement;
  33 import jdk.jfr.EventFactory;
  34 import jdk.jfr.EventType;
  35 import jdk.jfr.FlightRecorder;
  36 import jdk.jfr.Registered;
  37 import jdk.test.lib.Asserts;
  38 
  39 
  40 /*
  41  * @test
  42  * @summary EventFactory register/unregister API test
  43  * @key jfr
  44  * @library /test/lib
  45  * @run main/othervm jdk.jfr.api.event.TestEventFactoryRegistration
  46  */
  47 public class TestEventFactoryRegistration {
  48 
  49     public static void main(String[] args) throws Exception {
  50         // Create an unregistered event
  51         List<AnnotationElement> annotations = new ArrayList<>();
  52         annotations.add(new AnnotationElement(Registered.class, false));
  53         EventFactory factory = EventFactory.create(annotations, Collections.emptyList());
  54 
  55         try {
  56             factory.getEventType();
  57             Asserts.fail("Should not be able to get event type from an unregistered event");
  58         } catch(IllegalStateException ise) {
  59             // OK as expected
  60         }
  61 
  62         // Now, register the event
  63         factory.register();
  64         EventType eventType = factory.getEventType();
  65         verifyRegistered(factory.getEventType());
  66 
  67 
  68         // Now, unregister the event
  69         factory.unregister();
  70 
  71         verifyUnregistered(eventType);
  72 
  73         // Create a registered event
  74         factory = EventFactory.create(Collections.emptyList(), Collections.emptyList());
  75 
  76         eventType = factory.getEventType();
  77         Asserts.assertNotNull(eventType);
  78 
  79         verifyRegistered(eventType);
  80 
  81     }
  82 
  83     private static void verifyUnregistered(EventType eventType) {
  84         // Verify the event is not registered
  85         for (EventType type : FlightRecorder.getFlightRecorder().getEventTypes()) {
  86             if (eventType.getId() == type.getId()) {
  87                 Asserts.fail("Event is not unregistered");
  88             }
  89         }
  90     }
  91 
  92     private static void verifyRegistered(EventType eventType) {
  93         // Verify  the event is registered
  94         boolean found = false;
  95         for (EventType type : FlightRecorder.getFlightRecorder().getEventTypes()) {
  96             if (eventType.getId() == type.getId()) {
  97                 found = true;
  98             }
  99         }
 100         if(!found) {
 101             Asserts.fail("Event not registered");
 102         }
 103     }
 104 
 105 }