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

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 * 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.  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.event;

import jdk.jfr.Event;

import jdk.jfr.EventType;

import jdk.jfr.Recording;

import jdk.jfr.ValueDescriptor;

import jdk.jfr.consumer.RecordedEvent;

import jdk.test.lib.Asserts;

import jdk.test.lib.jfr.Events;

/*

 * @test

 * @summary Test with event class inheritance

 * @key jfr

 * @library /test/lib

 * @run main/othervm jdk.jfr.api.event.TestExtends

 */

public class TestExtends {

    private static final int DEFAULT_FIELD_COUNT = 4;

    @SuppressWarnings("unused")

    private static class GrandpaEvent extends Event {

        public int gPublicField = 4;

        protected int gProtectedField = 3;

        private int gPrivateField = 2;

        int gDefaultField = 1;

        private int hiddenField = 4711;

    }

    @SuppressWarnings("unused")

    private static class ParentEvent extends GrandpaEvent {

        public int pPublicField = 40;

        protected int pProtectedField = 30;

        private int pPrivateField = 20;

        int pDefaultField = 10;

        private boolean hiddenField = true;

    }

    @SuppressWarnings("unused")

    private static class MeEvent extends ParentEvent {

        public int mPublicField = 400;

        protected int mProtectedField = 300;

        private int mPrivateField = 200;

        int mDefaultField = 100;

        private String hiddenField = "Hidden";

    }

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

        Recording r = new Recording();

        r.enable(GrandpaEvent.class).withoutStackTrace();

        r.enable(ParentEvent.class).withStackTrace();

        r.enable(MeEvent.class).withoutStackTrace();

        r.start();

        GrandpaEvent g = new GrandpaEvent();

        g.commit();

        ParentEvent p = new ParentEvent();

        p.commit();

        MeEvent m = new MeEvent();

        m.commit();

        r.stop();

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

            System.out.println(re);

        }

        // Grandpa

        EventType grandpaType = EventType.getEventType(GrandpaEvent.class);

        verifyField(grandpaType, "gPublicField");

        verifyField(grandpaType, "gProtectedField");

        verifyField(grandpaType, "gPrivateField");

        verifyField(grandpaType, "gDefaultField");

        verifyField(grandpaType, "hiddenField");

        verifyFieldCount(grandpaType, 5);

        // Parent

        EventType parentType = EventType.getEventType(ParentEvent.class);

        verifyField(parentType, "gPublicField");

        verifyField(parentType, "gProtectedField");

        verifyField(parentType, "gDefaultField");

        verifyField(parentType, "pPublicField");

        verifyField(parentType, "pProtectedField");

        verifyField(parentType, "pPrivateField");

        verifyField(parentType, "pDefaultField");

        verifyField(parentType, "hiddenField");

        verifyFieldCount(parentType, 8);

        // Me

        EventType meType = EventType.getEventType(MeEvent.class);

        verifyField(meType, "gPublicField");

        verifyField(meType, "gProtectedField");

        verifyField(meType, "gDefaultField");

        verifyField(meType, "pPublicField");

        verifyField(meType, "pProtectedField");

        verifyField(meType, "pDefaultField");

        verifyField(meType, "mPublicField");

        verifyField(meType, "mProtectedField");

        verifyField(meType, "mPrivateField");

        verifyField(meType, "mDefaultField");

        verifyField(meType, "hiddenField");

        verifyFieldCount(meType, 11);

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

            System.out.println(re);

        }

        RecordedEvent grandpa = findEvent(r, GrandpaEvent.class.getName());

        Asserts.assertEquals(grandpa.getValue("gPublicField"), 4);

        Asserts.assertEquals(grandpa.getValue("gProtectedField"), 3);

        Asserts.assertEquals(grandpa.getValue("gPrivateField"), 2);

        Asserts.assertEquals(grandpa.getValue("gDefaultField"), 1);

        Asserts.assertEquals(grandpa.getValue("hiddenField"), 4711);

        RecordedEvent parent = findEvent(r, ParentEvent.class.getName());

        Asserts.assertEquals(parent.getValue("gPublicField"), 4);

        Asserts.assertEquals(parent.getValue("gProtectedField"), 3);

        Asserts.assertEquals(parent.getValue("gDefaultField"), 1);

        Asserts.assertEquals(parent.getValue("pPublicField"), 40);

        Asserts.assertEquals(parent.getValue("pProtectedField"), 30);

        Asserts.assertEquals(parent.getValue("pPrivateField"), 20);

        Asserts.assertEquals(parent.getValue("pDefaultField"), 10);

        Asserts.assertEquals(parent.getValue("hiddenField"), true);

        RecordedEvent me = findEvent(r, MeEvent.class.getName());

        Asserts.assertEquals(me.getValue("gPublicField"), 4);

        Asserts.assertEquals(me.getValue("gProtectedField"), 3);

        Asserts.assertEquals(me.getValue("gDefaultField"), 1);

        Asserts.assertEquals(me.getValue("pPublicField"), 40);

        Asserts.assertEquals(me.getValue("pProtectedField"), 30);

        Asserts.assertEquals(me.getValue("pDefaultField"), 10);

        Asserts.assertEquals(me.getValue("mPublicField"), 400);

        Asserts.assertEquals(me.getValue("mProtectedField"), 300);

        Asserts.assertEquals(me.getValue("mPrivateField"), 200);

        Asserts.assertEquals(me.getValue("mDefaultField"), 100);

        Asserts.assertEquals(me.getValue("hiddenField"), "Hidden");

    }

    private static RecordedEvent findEvent(Recording r, String name) throws Exception {

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

            if (re.getEventType().getName().equals(name)) {

                return re;

            }

        }

        throw new Exception("Event type hierarchy exist, but missing event " + name + " from recording");

    }

    private static void verifyFieldCount(EventType t, int count) throws Exception {

        if (t.getFields().size() != count + DEFAULT_FIELD_COUNT) {

            throw new Exception("Incorrect number of fields " + count);

        }

    }

    private static void verifyField(EventType t, String name) throws Exception {

        ValueDescriptor d = t.getField(name);

        if (d == null) {

            throw new Exception("Missing field " + name + " in event " + t.getName());

        }

    }

}