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