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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

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 * 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).

 *

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package jdk.jfr.api.event;

import java.util.ArrayList;

import java.util.Collections;

import java.util.List;

import jdk.jfr.AnnotationElement;

import jdk.jfr.EventFactory;

import jdk.jfr.EventType;

import jdk.jfr.FlightRecorder;

import jdk.jfr.Registered;

import jdk.test.lib.Asserts;

/*

 * @test

 * @summary EventFactory register/unregister API test

 * @key jfr

 * @library /test/lib

 * @run main/othervm jdk.jfr.api.event.TestEventFactoryRegistration

 */

public class TestEventFactoryRegistration {

    public static void main(String[] args) throws Exception {

        // Create an unregistered event

        List<AnnotationElement> annotations = new ArrayList<>();

        annotations.add(new AnnotationElement(Registered.class, false));

        EventFactory factory = EventFactory.create(annotations, Collections.emptyList());

        try {

            factory.getEventType();

            Asserts.fail("Should not be able to get event type from an unregistered event");

        } catch(IllegalStateException ise) {

            // OK as expected

        }

        // Now, register the event

        factory.register();

        EventType eventType = factory.getEventType();

        verifyRegistered(factory.getEventType());

        // Now, unregister the event

        factory.unregister();

        verifyUnregistered(eventType);

        // Create a registered event

        factory = EventFactory.create(Collections.emptyList(), Collections.emptyList());

        eventType = factory.getEventType();

        Asserts.assertNotNull(eventType);

        verifyRegistered(eventType);

    }

    private static void verifyUnregistered(EventType eventType) {

        // Verify the event is not registered

        for (EventType type : FlightRecorder.getFlightRecorder().getEventTypes()) {

            if (eventType.getId() == type.getId()) {

                Asserts.fail("Event is not unregistered");

            }

        }

    }

    private static void verifyRegistered(EventType eventType) {

        // Verify  the event is registered

        boolean found = false;

        for (EventType type : FlightRecorder.getFlightRecorder().getEventTypes()) {

            if (eventType.getId() == type.getId()) {

                found = true;

            }

        }

        if(!found) {

            Asserts.fail("Event not registered");

        }

    }

}