org.veronicadb.core.server.VServer.java Source code

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Here is the source code for org.veronicadb.core.server.VServer.java

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/*
 * Copyright 2015 Ambud Sharma
 * 
 * This program 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.
 * 
 * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.2
 */
package org.veronicadb.core.server;

import java.io.IOException;
import java.net.Inet4Address;
import java.net.InetSocketAddress;
import java.net.URISyntaxException;
import java.nio.channels.ServerSocketChannel;
import java.nio.channels.SocketChannel;
import java.util.concurrent.Callable;
import java.util.logging.Logger;

import org.apache.commons.configuration.ConfigurationException;
import org.veronicadb.core.configuration.ConfigurationManager;

public class VServer implements Callable<Void> {

    private static final Logger logger = Logger.getLogger("VServer");
    private static final String ALL_ADDRESSES = "0.0.0.0";
    private static final String PROP_BIND_HOST = "bind.address";
    private static final String PROP_BIND_PORT = "bind.port";
    private ServerSocketChannel channel;
    private final int port;

    public VServer() throws IOException, ConfigurationException {
        try {
            this.port = ConfigurationManager.getInstance().getConfig().getInt(PROP_BIND_PORT, 7992);
        } catch (ConfigurationException | URISyntaxException e) {
            throw new ConfigurationException(e);
        }
        this.channel = ServerSocketChannel.open();
    }

    @Override
    public Void call() throws Exception {
        ConfigurationManager configManager;
        try {
            configManager = ConfigurationManager.getInstance();
        } catch (ConfigurationException | URISyntaxException e1) {
            throw new Exception("Failed to get configuration manager instance");
        }
        try {
            this.channel = this.channel.bind(
                    new InetSocketAddress(Inet4Address
                            .getByName(configManager.getConfig().getString(PROP_BIND_HOST, ALL_ADDRESSES)), port),
                    5);
            logger.info("Started server at " + this.channel.getLocalAddress());
            this.channel.configureBlocking(false);
            while (true) {
                SocketChannel workerChannel = this.channel.accept();
                if (workerChannel != null) {
                    logger.info("New client connected:" + workerChannel.getRemoteAddress().toString());
                    VChannelHandlers.getInstance().submitChannel(workerChannel);
                }
            }
        } catch (IOException e) {
            throw new Exception("Failed to bind server to bind address", e);
        } finally {
            this.channel.close();
        }
    }

    public static void main(String[] args) {
        try {
            new VServer().call();
        } catch (Exception e) {
            System.err.println("Failure to launch Veronica server:" + e.getMessage());
        }
    }

}