com.jaeksoft.opensearchserver.ServerConfiguration.java Source code

Introduction

Here is the source code for com.jaeksoft.opensearchserver.ServerConfiguration.java

Source

/**   
 * License Agreement for OpenSearchServer
 *
 * Copyright (C) 2008-2015 Emmanuel Keller / Jaeksoft
 * 
 * http://www.open-search-server.com
 * 
 * This file is part of OpenSearchServer.
 *
 * OpenSearchServer is free software: you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 * OpenSearchServer 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 for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with OpenSearchServer. 
 *  If not, see <http://www.gnu.org/licenses/>.
 **/

package com.jaeksoft.opensearchserver;

import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.util.Set;

import org.apache.commons.io.IOUtils;

import com.fasterxml.jackson.core.JsonParseException;
import com.fasterxml.jackson.databind.JsonMappingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.dataformat.yaml.YAMLFactory;

public class ServerConfiguration {

    public static enum ServiceEnum {

        webcrawler,

        extractor,

        script,

        scheduler,

        renderer;

        /**
         * @param serverConfiguration
         * @return true if the service is present
         */
        public boolean isActive(ServerConfiguration serverConfiguration) {
            if (serverConfiguration == null)
                return true;
            if (serverConfiguration.services == null)
                return true;
            return serverConfiguration.services.contains(this);
        }
    }

    public final Set<ServiceEnum> services = null;

    public final Integer scheduler_max_threads = null;

    /**
     * @return the number of allowed threads. The default value is 1000.
     */
    int getSchedulerMaxThreads() {
        return scheduler_max_threads == null ? 1000 : scheduler_max_threads;
    }

    /**
     * Load the configuration file.
     * 
     * @param file
     * @return an instance of ServerConfiguration
     * @throws JsonParseException
     * @throws JsonMappingException
     * @throws IOException
     */
    static ServerConfiguration getNewInstance(File file)
            throws JsonParseException, JsonMappingException, IOException {
        ObjectMapper mapper = new ObjectMapper(new YAMLFactory());
        return mapper.readValue(file, ServerConfiguration.class);
    }

    /**
     * Read the configuration file from the resources
     * 
     * @return
     * @throws JsonParseException
     * @throws JsonMappingException
     * @throws IOException
     */
    static ServerConfiguration getDefaultConfiguration()
            throws JsonParseException, JsonMappingException, IOException {
        InputStream stream = OpenSearchServer.class.getResourceAsStream("server.yaml");
        if (stream == null)
            throw new IOException("Unable to load the default configuration resource: server.yaml");
        try {
            ObjectMapper mapper = new ObjectMapper(new YAMLFactory());
            return mapper.readValue(stream, ServerConfiguration.class);
        } finally {
            if (stream != null)
                IOUtils.closeQuietly(stream);
        }

    }
}