com.ijuru.ijambo.web.Listener.java Source code

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Here is the source code for com.ijuru.ijambo.web.Listener.java

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/**
 * Copyright 2012 Rowan Seymour
 * 
 * This file is part of Ijambo.
 *
 * Ijambo 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.
 *
 * Ijambo 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 Ijambo. If not, see <http://www.gnu.org/licenses/>.
 */

package com.ijuru.ijambo.web;

import java.io.IOException;
import java.net.UnknownHostException;

import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;

import org.apache.log4j.LogManager;
import org.apache.log4j.Logger;
import org.json.simple.parser.ParseException;

import com.ijuru.ijambo.Context;

/**
 * Listens for webapp stop/start
 */
public class Listener implements ServletContextListener {

    protected static final Logger log = LogManager.getLogger(Listener.class);

    /**
     * Web application is being deployed or started
     */
    public void contextInitialized(ServletContextEvent event) {
        log.info("Initializing Ijambo SMS");

        try {
            Context.startApplication();
        } catch (UnknownHostException ex) {
            log.info("Unable to connect to MongoDB instance", ex);
        } catch (IOException ex) {
            log.info("Unable to load word list", ex);
        } catch (ParseException ex) {
            log.info("Unable to parse connection URL from environment variable", ex);
        } catch (Exception ex) {
            log.info("Unable to start application: ", ex);
        }
    }

    /**
     * Web application is being undeployed or stopped
     */
    public void contextDestroyed(ServletContextEvent event) {
        log.info("Destroying Ijambo SMS");

        Context.destroyApplication();
    }
}