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package jdk.jfr.api.consumer.streaming;

import java.util.concurrent.CountDownLatch;

import java.util.concurrent.atomic.AtomicInteger;

import jdk.jfr.Event;

import jdk.jfr.consumer.RecordingStream;

/**

 * @test

 * @summary Verifies that it is possible to filter a stream for an event

 * @key jfr

 * @requires vm.hasJFR

 * @library /test/lib

 * @run main/othervm jdk.jfr.api.consumer.streaming.TestFiltering

 */

public class TestFiltering {

    static class SnakeEvent extends Event {

        int id;

    }

    static class EelEvent extends Event {

        int id;

    }

    public static void main(String... args) throws Exception {

        CountDownLatch l = new CountDownLatch(1);

        String eventName = SnakeEvent.class.getName();

        AtomicInteger idCounter = new AtomicInteger(-1);

        try (RecordingStream e = new RecordingStream()) {

            e.onEvent(eventName, event -> {

                if (!event.getEventType().getName().equals(eventName)) {

                    throw new InternalError("Unexpected event " + e);

                }

                if (event.getInt("id") != idCounter.incrementAndGet()) {

                    throw new InternalError("Incorrect id");

                }

                if (idCounter.get() == 99) {

                    l.countDown();

                }

            });

            e.startAsync();

            for (int i = 0; i < 100; i++) {

                SnakeEvent se = new SnakeEvent();

                se.id = i;

                se.commit();

                EelEvent ee = new EelEvent();

                ee.id = i;

                ee.commit();

            }

            l.await();

        }

    }

}