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

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 * 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.flightrecorder;

import static jdk.test.lib.Asserts.assertEquals;

import static jdk.test.lib.Asserts.assertTrue;

import java.time.Duration;

import java.util.Map;

import jdk.jfr.Event;

import jdk.jfr.EventType;

import jdk.jfr.Recording;

/*

 * @test

 * @key jfr

 * @library /test/lib

 * @run main/othervm jdk.jfr.api.flightrecorder.TestGetSettings

 */

public class TestGetSettings {

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

        final long minThresholdNanos = 1000000;

        final String dummyEventPath = "mydummy/event/path";

        final String myEventSettingName = String.valueOf(EventType.getEventType(MyEvent.class).getId());

        System.out.println("myEventSettingName=" + myEventSettingName);

        // Settings should be merged to include the most number of events (minimum threshold).

        Recording r1 = new Recording();

        r1.enable(MyEvent.class).withThreshold(Duration.ofNanos(minThresholdNanos * 3));

        r1.enable(MyEvent.class).withThreshold(Duration.ofNanos(minThresholdNanos * 2));

        r1.enable(dummyEventPath).withThreshold(Duration.ofNanos(minThresholdNanos));

        r1.start();

        ExpectedSetting[] expectedR1 = {

            new ExpectedSetting(myEventSettingName, "enabled", "true"),

            new ExpectedSetting(myEventSettingName, "threshold", Long.toString(minThresholdNanos * 2) + " ns"),

            new ExpectedSetting(dummyEventPath, "enabled", "true"),

            new ExpectedSetting(dummyEventPath, "threshold", Long.toString(minThresholdNanos) + " ns"),

        };

        verifySettings(r1.getSettings(), expectedR1);

        // Start another recording. Recorder settings should be merged from both recordings.

        Recording r2 = new Recording();

        r2.enable(MyEvent.class).withThreshold(Duration.ofNanos(minThresholdNanos));

        r2.disable(dummyEventPath);

        r2.start();

        ExpectedSetting[] expectedR2 = {

            new ExpectedSetting(myEventSettingName, "enabled", "true"),

            new ExpectedSetting(myEventSettingName, "threshold", Long.toString(minThresholdNanos) + " ns"),

            new ExpectedSetting(dummyEventPath, "enabled", "false")

        };

        verifySettings(r1.getSettings(), expectedR1);

        verifySettings(r2.getSettings(), expectedR2);

        // Stop first recording. Recorder should use settings from r2.

        r1.stop();

        verifySettings(r2.getSettings(), expectedR2);

        r2.stop();

        r1.close();

        r2.close();

    }

    private static void verifySettings(Map<String, String> settings, ExpectedSetting ... expectedSettings) {

        for (String name : settings.keySet()) {

            System.out.printf("Settings: %s=%s%n", name, settings.get(name));

        }

        for (ExpectedSetting expected : expectedSettings) {

            boolean isFound = false;

            for (String name : settings.keySet()) {

                if (name.contains(expected.name) && name.contains(expected.option)) {

                    final String value = settings.get(name);

                    String msg = String.format("got: %s=%s, expected: %s", name, value, expected.toString());

                    assertEquals(value, expected.value, msg);

                    System.out.println("OK: " + msg);

                    isFound = true;

                    break;

                }

            }

            assertTrue(isFound, "Missing setting " + expected.toString());

        }

    }

    private static class MyEvent extends Event {

    }

    private static class ExpectedSetting {

        String name;

        String option;

        String value;

        public ExpectedSetting(String name, String option, String value) {

            this.name = name;

            this.option = option;

            this.value = value;

        }

        @Override

        public String toString() {

            return String.format("name=%s, option=%s, value=%s", name, option, value);

        }

    }

}