/*

 * 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,

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

 *

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

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package jdk.jfr.startupargs;

import java.io.IOException;

import java.nio.file.DirectoryStream;

import java.nio.file.Files;

import java.nio.file.Path;

import java.nio.file.Paths;

import java.util.Iterator;

import java.util.function.Supplier;

import jdk.jfr.consumer.RecordingFile;

import jdk.test.lib.Asserts;

import jdk.test.lib.process.OutputAnalyzer;

import jdk.test.lib.process.ProcessTools;

/**

 * @test

 * @summary Start a FlightRecording with dumponexit. Verify dump exists.

 * @key jfr

 * @requires vm.hasJFR

 * @library /test/lib

 * @run main/othervm jdk.jfr.startupargs.TestDumpOnExit

 */

public class TestDumpOnExit {

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

        Path dumpPath = Paths.get(".", "dumped.jfr");

        // Test without security manager and a file name relative to current directory

        testDumponExit(() -> dumpPath,

                "-Xlog:jfr=trace",

                "-XX:StartFlightRecording=filename=./dumped.jfr,dumponexit=true,settings=profile",

                "jdk.jfr.startupargs.TestDumpOnExit$TestMain"

        );

        // Test a memory recording without a security manager

        testDumponExit(() -> findJFRFileInCurrentDirectory(),

                "-Xlog:jfr=trace",

                "-XX:StartFlightRecording=dumponexit=true,disk=false",

                "jdk.jfr.startupargs.TestDumpOnExit$TestMain"

        );

        // Test with security manager and a file name relative to current directory

        testDumponExit(() -> dumpPath,

                "-Xlog:jfr=trace",

                "-XX:StartFlightRecording=filename=./dumped.jfr,dumponexit=true,settings=profile",

                "-Djava.security.manager",

                "jdk.jfr.startupargs.TestDumpOnExit$TestMain"

        );

        // Test with security manager but without a name

        testDumponExit(() -> findJFRFileInCurrentDirectory(),

                "-Xlog:jfr=trace",

                "-XX:StartFlightRecording=dumponexit=true,settings=profile",

                "-Djava.security.manager",

                "jdk.jfr.startupargs.TestDumpOnExit$TestMain"

        );

    }

    private static Path findJFRFileInCurrentDirectory() {

        try {

            DirectoryStream<Path> ds = Files.newDirectoryStream(Paths.get("."), "*pid-*.jfr");

            Iterator<Path> pathIterator = ds.iterator();

            if (!pathIterator.hasNext()) {

                throw new RuntimeException("Could not find jfr file in current directory");

            }

            return pathIterator.next();

        } catch (IOException e) {

            throw new RuntimeException("Could not list jfr file in current directory");

        }

    }

    private static void testDumponExit(Supplier<Path> p,String... args) throws Exception, IOException {

        ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(true, args);

        OutputAnalyzer output = ProcessTools.executeProcess(pb);

        System.out.println(output.getOutput());

        output.shouldHaveExitValue(0);

        Path dump = p.get();

        Asserts.assertTrue(Files.isRegularFile(dump), "No recording dumped " + dump);

        System.out.println("Dumped recording size=" + Files.size(dump));

        Asserts.assertFalse(RecordingFile.readAllEvents(dump).isEmpty(), "No events in dump");

    }

    @SuppressWarnings("unused")

    private static class TestMain {

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

            System.out.println("Hello from test main");

        }

    }

}