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  *
  45  * @library /lib /
  46  * @run main/othervm jdk.jfr.api.event.TestEventFactoryRegistration
  47  * @run main/othervm -XX:+AllowParallelDefineClass jdk.jfr.api.event.TestEventFactoryRegistration
  48  */
  49 public class TestEventFactoryRegistration {
  50 
  51     public static void main(String[] args) throws Exception {
  52         // Create an unregistered event
  53         List<AnnotationElement> annotations = new ArrayList<>();
  54         annotations.add(new AnnotationElement(Registered.class, false));
  55         EventFactory factory = EventFactory.create(annotations, Collections.emptyList());
  56 
  57         try {
  58             factory.getEventType();
  59             Asserts.fail("Should not be able to get event type from an unregistered event");
  60         } catch(IllegalStateException ise) {
  61             // OK as expected
  62         }
  63 
  64         // Now, register the event
  65         factory.register();
  66         EventType eventType = factory.getEventType();
  67         verifyRegistered(factory.getEventType());
  68 
  69 
  70         // Now, unregister the event
  71         factory.unregister();
  72 
  73         verifyUnregistered(eventType);
  74 
  75         // Create a registered event
  76         factory = EventFactory.create(Collections.emptyList(), Collections.emptyList());
  77 
  78         eventType = factory.getEventType();
  79         Asserts.assertNotNull(eventType);
  80 
  81         verifyRegistered(eventType);
  82 
  83     }
  84 
  85     private static void verifyUnregistered(EventType eventType) {
  86         // Verify the event is not registered
  87         for (EventType type : FlightRecorder.getFlightRecorder().getEventTypes()) {
  88             if (eventType.getId() == type.getId()) {
  89                 Asserts.fail("Event is not unregistered");
  90             }
  91         }
  92     }
  93 
  94     private static void verifyRegistered(EventType eventType) {
  95         // Verify  the event is registered
  96         boolean found = false;
  97         for (EventType type : FlightRecorder.getFlightRecorder().getEventTypes()) {
  98             if (eventType.getId() == type.getId()) {
  99                 found = true;
 100             }
 101         }
 102         if(!found) {
 103             Asserts.fail("Event not registered");
 104         }
 105     }
 106 
 107 }