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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).

 *

 * 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 jdk.jfr.Recording;

import jdk.jfr.consumer.RecordedEvent;

import jdk.test.lib.Asserts;

import jdk.test.lib.jfr.EventNames;

import jdk.test.lib.jfr.Events;

/*

 * @test

 * @summary Enable/disable event by name during recording.

 * @key jfr

 * @library /test/lib

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

 */

public class TestReEnableName {

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

        testRecordingWithEnabledEvent(EventNames.FileWrite, false);

        testRecordingWithEnabledEvent(EventNames.FileWrite, true);

    }

    // Loop and enable/disable events. Create events each loop.

    // Verify we only get events created during enabled.

    private static void testRecordingWithEnabledEvent(String eventname, boolean enabled) throws Exception {

        System.out.println("Testing enabled=" + enabled + " for " + eventname);

        final Path pathDisabled = Paths.get(".", "disabled.txt").toAbsolutePath();

        final Path pathEnabled = Paths.get(".", "enabled.txt").toAbsolutePath();

        Recording r = new Recording();

        if (enabled) {

            r.enable(eventname).withoutThreshold().withoutStackTrace();

        } else {

            r.disable(eventname).withoutThreshold().withoutStackTrace();

        }

        r.start();

        // We should only get events for pathEnabled, not for pathDisabled.

        int countExpectedEvents = 0;

        for (int i = 0; i < 10; ++i) {

            if (enabled) {

                Files.write(pathEnabled, "E".getBytes());

                ++countExpectedEvents;

                r.disable(eventname);

            } else {

                Files.write(pathDisabled, "D".getBytes());

                r.enable(eventname);

            }

            enabled = !enabled;

        }

        r.stop();

        int countFoundEvents = 0;

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

            System.out.printf("Event %s%n", event);

            Asserts.assertEquals(eventname, event.getEventType().getName(), "Wrong event type");

            String path = Events.assertField(event, "path").getValue();

            System.out.println(path);

            if (pathEnabled.toString().equals(path)) {

                ++countFoundEvents;

            }

        }

        Asserts.assertGreaterThanOrEqual(countFoundEvents, countExpectedEvents, "Too few events found");

        r.close();

    }

}