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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

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 *

 * 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.recording.event;

import java.lang.reflect.Constructor;

import java.time.Duration;

import java.util.ArrayList;

import java.util.List;

import jdk.jfr.Event;

import jdk.jfr.Recording;

import jdk.jfr.consumer.RecordedEvent;

import jdk.test.lib.Asserts;

import jdk.test.lib.jfr.Events;

 * @test

 * @summary Load event class after recording started.

 * @key jfr

 * @library /test/lib

 * @build jdk.test.lib.jfr.SimpleEvent

 * @run main/othervm jdk.jfr.api.recording.event.TestLoadEventAfterStart

 */

public class TestLoadEventAfterStart {

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

        Recording r = new Recording();

        r.start();

        ClassLoader classLoader = TestLoadEventAfterStart.class.getClassLoader();

        Class<? extends Event> eventClass =

            classLoader.loadClass("jdk.test.lib.jfr.SimpleEvent").asSubclass(Event.class);

        r.enable(eventClass).withThreshold(Duration.ofMillis(0)).withoutStackTrace();

        createEvent(eventClass, 1);

        r.disable(eventClass);

        createEvent(eventClass, 2);

        r.enable(eventClass).withThreshold(Duration.ofMillis(0)).withoutStackTrace();

        createEvent(eventClass, 3);

        r.stop();

        verifyEvents(r, 1, 3);

    }

    private static void verifyEvents(Recording r, int ... ids) throws Exception {

        List<Integer> eventIds = new ArrayList<>();

        for (RecordedEvent event : Events.fromRecording(r)) {

            int id = Events.assertField(event, "id").getValue();

            System.out.println("Event id:" + id);

            eventIds.add(id);

        }

        Asserts.assertEquals(eventIds.size(), ids.length, "Wrong number of events");

        for (int i = 0; i < ids.length; ++i) {

            Asserts.assertEquals(eventIds.get(i).intValue(), ids[i], "Wrong id in event");

        }

    }

    private static void createEvent(Class<? extends Event> eventClass, int id) throws Exception {

        Constructor<? extends Event> constructor = eventClass.getConstructor();

        Event event = (Event) constructor.newInstance();

        event.begin();

        eventClass.getDeclaredField("id").setInt(event, id);

        event.end();

        event.commit();

    }

}