/*

 * 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,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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package jdk.jfr.api.recorder;

import java.io.IOException;

import java.nio.file.Files;

import java.nio.file.LinkOption;

import java.nio.file.Path;

import jdk.jfr.Configuration;

import jdk.jfr.Recording;

/*

 * @test TestStartStopRecording

 *

 * @key jfr

 * @run main/othervm jdk.jfr.api.recorder.TestStartStopRecording

 */

public class TestStartStopRecording {

    public static void main(String... args) throws Exception {

        Configuration defaultConfig = Configuration.getConfiguration("default");

        // Memory

        Recording inMemory = new Recording(defaultConfig);

        inMemory.setToDisk(false);

        inMemory.start();

        Path memoryFile = Files.createTempFile("memory-recording", ".jfr");

        inMemory.dump(memoryFile);

        assertValid(memoryFile, "Not a valid memory file.");

        inMemory.stop();

        inMemory.close();

        // Disk

        Recording toDisk = new Recording(defaultConfig);

        toDisk.setToDisk(true);

        toDisk.start();

        toDisk.stop();

        Path diskFile = Files.createTempFile("disk-recording", ".jfr");

        toDisk.dump(diskFile);

        assertValid(diskFile, "Not a valid disk file.");

        toDisk.close();

    }

    private static void assertValid(Path path, String message) throws IOException {

        if (!Files.exists(path, LinkOption.NOFOLLOW_LINKS)) {

            throw new AssertionError(message + " Could not find file " + path);

        }

        if (Files.size(path) == 0) {

            throw new AssertionError(message + " File size = 0 for " + path);

        }

    }

}