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 * Copyright (c) 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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 *

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package jdk.jfr.event.io;

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

import java.io.File;

import java.io.IOException;

import java.io.RandomAccessFile;

import java.nio.ByteBuffer;

import java.nio.channels.FileChannel;

import java.time.Duration;

import java.util.ArrayList;

import java.util.List;

import jdk.jfr.Recording;

import jdk.jfr.consumer.RecordedEvent;

import jdk.test.lib.jfr.Events;

/*

 * @test

 * @key jfr

 * @library /test/lib /test/jdk

 * @run main/othervm jdk.jfr.event.io.TestFileReadOnly

 */

public class TestFileReadOnly {

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

        File tmp = File.createTempFile("TestFileReadOnly", ".tmp", new File("."));

        tmp.deleteOnExit();

        Recording recording = new Recording();

        List<IOEvent> expectedEvents = new ArrayList<>();

        recording.enable(IOEvent.EVENT_FILE_READ).withThreshold(Duration.ofMillis(0));

        recording.enable(IOEvent.EVENT_FILE_WRITE).withThreshold(Duration.ofMillis(0));

        recording.start();

        final byte[] buf = { 1, 2, 3 };

        // Create the file.

        try (RandomAccessFile f = new RandomAccessFile(tmp, "rw")) {

            f.write(buf);

            expectedEvents.add(IOEvent.createFileWriteEvent(buf.length, tmp));

        }

        // Reopen the file as ReadOnly and try to write to it.

        // Should generate an event with bytesWritten = -1.

        try (RandomAccessFile f = new RandomAccessFile(tmp, "r")) {

            try {

                f.write(buf);

                fail("No exception for ReadOnly File");

            } catch (IOException e) {

                // Expected exception

                expectedEvents.add(IOEvent.createFileWriteEvent(-1, tmp));

            }

        }

        // Try to write to read-only FileChannel.

        try (RandomAccessFile f = new RandomAccessFile(tmp, "r"); FileChannel ch = f.getChannel()) {

            ByteBuffer writeBuf = ByteBuffer.allocateDirect(buf.length);

            writeBuf.put(buf);

            writeBuf.flip();

            ch.position(0);

            try {

                ch.write(writeBuf);

                fail("No exception for ReadOnly FileChannel");

            } catch (java.nio.channels.NonWritableChannelException e) {

                // Expected exception

                expectedEvents.add(IOEvent.createFileWriteEvent(-1, tmp));

            }

        }

        recording.stop();

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

        IOHelper.verifyEqualsInOrder(events, expectedEvents);

    }

}