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

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 * particular file as subject to the "Classpath" exception as provided

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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).

 *

 * You should have received a copy of the GNU General Public License version

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package jdk.jfr.api.recording.event;

import java.nio.file.Files;

import java.nio.file.Path;

import java.nio.file.Paths;

import java.util.Random;

import jdk.jfr.EventType;

import jdk.jfr.Recording;

import jdk.test.lib.Asserts;

import jdk.test.lib.jfr.SimpleEvent;

import jdk.test.lib.jfr.SimpleEventHelper;

 * @test

 * @summary Enable, disable, enable event during recording.

 * @key jfr

 * @library /test/lib

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

 */

public class TestRecordingEnableDisable {

    private static final String EVENT_PATH = "java.file_write";

    private static final Random rand = new Random(0);

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

        Recording rA = new Recording();

        Recording rB = new Recording();

        rA.setName("rA");

        rB.setName("rB");

        final Path path = Paths.get(".", "my.jfr");

        rA.start();

        rB.start();

        for (int i = 0; i < 30; ++i) {

            SimpleEventHelper.createEvent(i);

            if (isMyEventEnabled(rA, rB)) {

                System.out.println("MyEvent enabled");

            }

            else {

                System.out.println("MyEvent disabled");

            }

            Files.write(path, "A".getBytes());

            if (isIoEnabled(rA, rB)) {

                System.out.println("IoEvent enabled");

            }

            else {

                System.out.println("IoEvent disabled");

            }

            Recording r = ((i % 2) == 0) ? rA : rB;

            updateSettings(r);

        }

        rA.stop();

        rB.stop();

        rA.close();

        rB.close();

    }

    private static void updateSettings(Recording r) {

        int operationIndex = rand.nextInt(4);

        switch (operationIndex) {

            case 0:

                SimpleEventHelper.enable(r, true);

                break;

            case 1:

                SimpleEventHelper.enable(r, false);

                break;

            case 2:

                r.enable(EVENT_PATH).withoutStackTrace();

                break;

            case 3:

                r.disable(EVENT_PATH);

                break;

            default:

                Asserts.fail("Wrong operataionIndex. Test error");

            }

    }

    private static boolean isMyEventEnabled(Recording rA, Recording rB) {

        long eventTypeId = EventType.getEventType(SimpleEvent.class).getId();

        String settingName = "@" + eventTypeId + "#enabled";

        return isEnabled(rA, settingName) || isEnabled(rB, settingName);

    }

    private static boolean isIoEnabled(Recording rA, Recording rB) {

        String settingName = EVENT_PATH + "#enabled";

        return isEnabled(rA, settingName) || isEnabled(rB, settingName);

    }

    private static boolean isEnabled(Recording r, String settingName) {

        System.out.printf("R(%s) %s=%s%n", r.getName(), settingName, r.getSettings().get(settingName));

        return Boolean.parseBoolean(r.getSettings().get(settingName));

    }

}