org.overlord.sramp.ui.server.listeners.Initializer.java Source code

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Here is the source code for org.overlord.sramp.ui.server.listeners.Initializer.java

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/*
 * Copyright 2012 JBoss Inc
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.overlord.sramp.ui.server.listeners;

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

import org.apache.commons.configuration.CompositeConfiguration;
import org.apache.commons.configuration.JNDIConfiguration;
import org.apache.commons.configuration.PropertiesConfiguration;
import org.apache.commons.configuration.SystemConfiguration;
import org.overlord.sramp.ui.server.api.SrampAtomApiClient;

/**
 * A simple context listener used to initialize the s-ramp UI application.
 * 
 * @author eric.wittmann@redhat.com
 */
public class Initializer implements ServletContextListener {

    /**
     * Default constructor.
     */
    public Initializer() {
    }

    /**
     * @see javax.servlet.ServletContextListener#contextInitialized(javax.servlet.ServletContextEvent)
     */
    @Override
    public void contextInitialized(ServletContextEvent event) {
        try {
            CompositeConfiguration config = new CompositeConfiguration();
            config.addConfiguration(new SystemConfiguration());
            config.addConfiguration(new JNDIConfiguration("java:comp/env/overlord/s-ramp-ui"));
            config.addConfiguration(new PropertiesConfiguration(
                    Initializer.class.getResource("/META-INF/config/org.overlord.sramp.ui.server.api.properties")));
            System.out.println("S-RAMP user interface configuration loaded.  S-RAMP Atom API endpoint: "
                    + config.getString("s-ramp.atom-api.endpoint"));

            // Now initialize the S-RAMP Atom API Client singleton
            SrampAtomApiClient.init(config);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * @see javax.servlet.ServletContextListener#contextDestroyed(javax.servlet.ServletContextEvent)
     */
    @Override
    public void contextDestroyed(ServletContextEvent event) {
    }

}