/*

 * Copyright (c) 2016, 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.internal.dcmd;

import jdk.jfr.internal.LogLevel;

import jdk.jfr.internal.LogTag;

import jdk.jfr.internal.Logger;

import jdk.jfr.internal.Options;

import jdk.jfr.internal.Repository;

import jdk.jfr.internal.SecuritySupport.SafePath;

/**

 * JFR.configure - invoked from native

 *

 */

//Instantiated by native

final class DCmdConfigure extends AbstractDCmd {

    /**

     * Execute JFR.configure.

     *

     * @param repositoryPath the path

     * @param dumpPath path to dump to on fatal error (oom)

     * @param stackDepth depth of stack traces

     * @param globalBufferCount number of global buffers

     * @param globalBufferSize size of global buffers

     * @param threadBufferSize size of thread buffer for events

     * @param maxChunkSize threshold at which a new chunk is created in the disk repository

     * @param sampleThreads if thread sampling should be enabled

     *

     * @return result

     * @throws DCmdException

     *             if the dump could not be completed

     */

    public String execute

    (

            String repositoryPath,

            String dumpPath,

            Integer stackDepth,

            Long globalBufferCount,

            Long globalBufferSize,

            Long threadBufferSize,

            Long memorySize,

            Long maxChunkSize,

            Boolean sampleThreads

    ) throws DCmdException {

        boolean updated = false;

        if (repositoryPath != null) {

            try {

                SafePath s = new SafePath(repositoryPath);

                Repository.getRepository().setBasePath(s);

                Logger.log(LogTag.JFR, LogLevel.INFO, "Base repository path set to " + repositoryPath);

            } catch (Exception e) {

                throw new DCmdException("Could not use " + repositoryPath + " as repository. " + e.getMessage(), e);

            }

            printRepositoryPath();

            updated = true;

        }

        if (dumpPath != null)  {

            Options.setDumpPath(new SafePath(dumpPath));

            Logger.log(LogTag.JFR, LogLevel.INFO, "Emergency dump path set to " + dumpPath);

            printDumpPath();

            updated = true;

        }

        if (stackDepth != null)  {

            Options.setStackDepth(stackDepth);

            Logger.log(LogTag.JFR, LogLevel.INFO, "Stack depth set to " + stackDepth);

            printStackDepth();

            updated = true;

        }

        if (globalBufferCount != null)  {

            Options.setGlobalBufferCount(globalBufferCount);

            Logger.log(LogTag.JFR, LogLevel.INFO, "Global buffer count set to " + globalBufferCount);

            printGlobalBufferCount();

            updated = true;

        }

        if (globalBufferSize != null)  {

            Options.setGlobalBufferSize(globalBufferSize);

            Logger.log(LogTag.JFR, LogLevel.INFO, "Global buffer size set to " + globalBufferSize);

            printGlobalBufferSize();

            updated = true;

        }

        if (threadBufferSize != null)  {

            Options.setThreadBufferSize(threadBufferSize);

            Logger.log(LogTag.JFR, LogLevel.INFO, "Thread buffer size set to " + threadBufferSize);

            printThreadBufferSize();

            updated = true;

        }

        if (memorySize != null) {

            Options.setMemorySize(memorySize);

            Logger.log(LogTag.JFR, LogLevel.INFO, "Memory size set to " + memorySize);

            printMemorySize();

            updated = true;

        }

        if (maxChunkSize != null)  {

            Options.setMaxChunkSize(maxChunkSize);

            Logger.log(LogTag.JFR, LogLevel.INFO, "Max chunk size set to " + maxChunkSize);

            printMaxChunkSize();

            updated = true;

        }

        if (sampleThreads != null)  {

            Options.setSampleThreads(sampleThreads);

            Logger.log(LogTag.JFR, LogLevel.INFO, "Sample threads set to " + sampleThreads);

            printSampleThreads();

            updated = true;

        }

        if (!updated) {

            println("Current configuration:");

            println();

            printRepositoryPath();

            printStackDepth();

            printGlobalBufferCount();

            printGlobalBufferSize();

            printThreadBufferSize();

            printMemorySize();

            printMaxChunkSize();

            printSampleThreads();

        }

        return getResult();

    }

    private void printRepositoryPath() {

        print("Repository path: ");

        printPath(Repository.getRepository().getRepositoryPath());

        println();

    }

    private void printDumpPath() {

        print("Dump path: ");

        printPath(Options.getDumpPath());

        println();

    }

    private void printSampleThreads() {

        println("Sample threads: " + Options.getSampleThreads());

    }

    private void printStackDepth() {

        println("Stack depth: " +  Options.getStackDepth());

    }

    private void printGlobalBufferCount() {

        println("Global buffer count: " +  Options.getGlobalBufferCount());

    }

    private void printGlobalBufferSize() {

        print("Global buffer size: ");

        printBytes(Options.getGlobalBufferSize(), " ");

        println();

    }

    private void printThreadBufferSize() {

        print("Thread buffer size: ");

        printBytes(Options.getThreadBufferSize(), " ");

        println();

    }

    private void printMemorySize() {

        print("Memory size: ");

        printBytes(Options.getMemorySize(), " ");

        println();

    }

    private void printMaxChunkSize() {

        print("Max chunk size: ");

        printBytes(Options.getMaxChunkSize(), " ");

        println();

    }

}