/*

 * Copyright (c) 2013, 2018, 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.  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

 * 2 along with this work; if not, write to the Free Software Foundation,

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package jdk.jfr.event.runtime;

import java.time.Duration;

import java.util.List;

import jdk.jfr.Recording;

import jdk.jfr.consumer.RecordedClass;

import jdk.jfr.consumer.RecordedClassLoader;

import jdk.jfr.consumer.RecordedEvent;

import jdk.test.lib.Asserts;

import jdk.test.lib.jfr.EventNames;

import jdk.test.lib.jfr.Events;

import jdk.test.lib.jfr.TestClassLoader;

 * @test

 * @key jfr

 * @library /test/lib /test/jdk

 * @build jdk.jfr.event.runtime.TestClasses

 * @run main/othervm jdk.jfr.event.runtime.TestClassLoadEvent

 */

public final class TestClassLoadEvent {

    private final static String TEST_CLASS_NAME = "jdk.jfr.event.runtime.TestClasses";

    private final static String BOOT_CLASS_LOADER_NAME = "bootstrap";

    private final static String SEARCH_CLASS_NAME = "java.lang.Object";

    private final static String SEARCH_PACKAGE_NAME = "java/lang";

    private final static String SEARCH_MODULE_NAME = "java.base";

    private final static String EVENT_NAME = EventNames.ClassLoad;

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

        Recording recording = new Recording();

        recording.enable(EVENT_NAME).withThreshold(Duration.ofMillis(0));

        TestClassLoader cl = new TestClassLoader();

        recording.start();

        cl.loadClass(TEST_CLASS_NAME);

        recording.stop();

        List<RecordedEvent> events = Events.fromRecording(recording);

        boolean isLoaded = false;

        for (RecordedEvent event : events) {

            RecordedClass loadedClass = event.getValue("loadedClass");

            if (SEARCH_CLASS_NAME.equals(loadedClass.getName())) {

                System.out.println(event);

                Events.assertClassPackage(loadedClass, SEARCH_PACKAGE_NAME);

                Events.assertClassModule(loadedClass, SEARCH_MODULE_NAME);

                RecordedClassLoader initiatingClassLoader = event.getValue("initiatingClassLoader");

                Asserts.assertEquals(cl.getClass().getName(), initiatingClassLoader.getType().getName(),

                    "Expected type " + cl.getClass().getName() + ", got type " + initiatingClassLoader.getType().getName());

                RecordedClassLoader definingClassLoader = loadedClass.getClassLoader();

                Asserts.assertEquals(BOOT_CLASS_LOADER_NAME, definingClassLoader.getName(),

                    "Expected boot loader to be the defining class loader");

                Asserts.assertNull(definingClassLoader.getType(), "boot loader should not have a type");

                isLoaded = true;

            }

        }

        Asserts.assertTrue(isLoaded, "No class load event found for class " + SEARCH_CLASS_NAME);

    }

}