Package org.apache.myfaces.tobago.webapp

Source Code of org.apache.myfaces.tobago.webapp.TobagoServletContextListener

package org.apache.myfaces.tobago.webapp;

/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements.  See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.
*/

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.myfaces.tobago.config.ThemeConfig;
import org.apache.myfaces.tobago.config.TobagoConfig;
import org.apache.myfaces.tobago.config.TobagoConfigParser;
import org.apache.myfaces.tobago.context.ResourceManagerFactory;

import javax.servlet.ServletContext;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import java.util.HashMap;

public class TobagoServletContextListener implements ServletContextListener {

  private static final Log LOG
      = LogFactory.getLog(TobagoServletContextListener.class);

  public void contextInitialized(ServletContextEvent event) {

    if (LOG.isInfoEnabled()) {
      LOG.info("*** contextInitialized ***");
    }

    ServletContext servletContext = event.getServletContext();

    if (servletContext.getAttribute(TobagoConfig.TOBAGO_CONFIG) != null) {
      LOG.warn("Tobago has been already initialized. Do nothing.");
      return;
    }

    try {

      // tobago-config.xml
      TobagoConfig tobagoConfig
          = new TobagoConfigParser().parse(servletContext);
      servletContext.setAttribute(TobagoConfig.TOBAGO_CONFIG, tobagoConfig);

      // todo: cleanup, use one central TobagoConfig, no singleton ResourceManager
      // resources
      ResourceManagerFactory.init(servletContext, tobagoConfig);

      // prepare themes
      tobagoConfig.resolveThemes();

      // theme config cache
      servletContext.setAttribute(ThemeConfig.THEME_CONFIG_CACHE, new HashMap());

    } catch (Throwable e) {
      if (LOG.isFatalEnabled()) {
        String error = "Error while deploy process. Tobago can't be initialized! "
            + "Application will not run!";
        LOG.fatal(error, e);
        throw new RuntimeException(error, e);
      }
    }
  }

  public void contextDestroyed(ServletContextEvent event) {
    if (LOG.isInfoEnabled()) {
      LOG.info("*** contextDestroyed ***\n--- snip ---------"
          + "--------------------------------------------------------------");
    }

    ServletContext servletContext = event.getServletContext();

    servletContext.removeAttribute(TobagoConfig.TOBAGO_CONFIG);
    ResourceManagerFactory.release(servletContext);
    servletContext.removeAttribute(ThemeConfig.THEME_CONFIG_CACHE);

    LogFactory.releaseAll();
//    LogManager.shutdown();
  }

}
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