62 lines
2.5 KiB
Java
62 lines
2.5 KiB
Java
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/**
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* Copyright (C) 2007 - 2016 52°North Initiative for Geospatial Open Source
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* Software GmbH
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation.
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*
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* If the program is linked with libraries which are licensed under one of
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* the following licenses, the combination of the program with the linked
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* library is not considered a "derivative work" of the program:
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*
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* • Apache License, version 2.0
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* • Apache Software License, version 1.0
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* • GNU Lesser General Public License, version 3
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* • Mozilla Public License, versions 1.0, 1.1 and 2.0
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* • Common Development and Distribution License (CDDL), version 1.0
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*
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* Therefore the distribution of the program linked with libraries licensed
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* under the aforementioned licenses, is permitted by the copyright holders
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* if the distribution is compliant with both the GNU General Public
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* License version 2 and the aforementioned licenses.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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* Public License for more details.
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*/
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package org.n52.wps.server.handler;
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import java.util.concurrent.ArrayBlockingQueue;
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import java.util.concurrent.ThreadPoolExecutor;
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import java.util.concurrent.TimeUnit;
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import org.n52.wps.ServerDocument.Server;
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import org.n52.wps.commons.WPSConfig;
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/**
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* After the client Request is accepted, it should be executed. To prevent
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* resource-exhaustion, this ThreadPoolExecutor stores the Requests in a queue,
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* and handles only a couple of them at a time. To tune the performance one can
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* alter the parameters of this pool.
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*
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* Proper pool size estimation: N = Number of processors WT = Average waiting
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* time of a task ST = Average service time of a task #Threads = N * (1 + WT/ST)
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*
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* @author Timon ter Braak
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*/
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public class RequestExecutor extends ThreadPoolExecutor {
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public static Server serverConfig = WPSConfig.getInstance().getWPSConfig().getServer();
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/**
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* Create a RequestExecutor.
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*/
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public RequestExecutor() {
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super(serverConfig.getMinPoolSize().intValue(), serverConfig.getMaxPoolSize().intValue(), serverConfig.getKeepAliveSeconds().intValue(),
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TimeUnit.SECONDS, new ArrayBlockingQueue<Runnable>(
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serverConfig.getMaxQueuedTasks().intValue()));
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}
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}
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