/*
 * Copyright (c) 2019, 2025, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * 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).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package jdk.jfr.api.consumer.streaming;

import java.util.Random;

import jdk.jfr.Event;
import jdk.jfr.StackTrace;
import jdk.jfr.consumer.RecordingStream;

/**
 * @test
 * @summary Test that it is possible to iterate over chunk with normal events
 * @requires vm.flagless
 * @requires vm.hasJFR
 * @library /test/lib
 * @run main/othervm jdk.jfr.api.consumer.streaming.TestFilledChunks
 */
public class TestFilledChunks {

    @StackTrace(false)
    static class FillEvent extends Event {
        String message;
        int value;
        int id;
    }

    static class EndEvent extends Event {
    }

    // Will generate about 100 MB of data, or 8-9 chunks
    private static final int EVENT_COUNT = 5_000_000;

    public static void main(String... args) throws Exception {
        try (RecordingStream rs = new RecordingStream()) {
            rs.setOrdered(false);
            rs.onEvent(FillEvent.class.getName(), e -> {
                int id = e.getInt("id");
                // Some events may get lost due to
                // buffer being full.
                if (id > EVENT_COUNT / 2) {
                    rs.close();
                }
            });
            rs.startAsync();
            long seed = System.currentTimeMillis();
            System.out.println("Random seed: " + seed);
            Random r = new Random(seed);
            for (int i = 1; i < EVENT_COUNT; i++) {
                FillEvent f = new FillEvent();
                f.message = i % 2 == 0 ? "hello, hello, hello, hello, hello!" : "hi!";
                f.value = r.nextInt(10000);
                f.id = i;
                f.commit();
                if (i % 1_000_000 == 0) {
                    System.out.println("Emitted " + i + " events");
                }
            }
            rs.awaitTermination();
        }
    }
}
