/**
* 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.
*/
package org.apache.camel.component.servlet;
import java.util.Iterator;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import org.apache.camel.component.http.CamelServlet;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.context.support.AbstractApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class CamelHttpTransportServlet extends CamelServlet {
private static final transient Log LOG = LogFactory.getLog(CamelHttpTransportServlet.class);
private static final Map<String, CamelServlet> CAMEL_SERVLET_MAP = new ConcurrentHashMap<String, CamelServlet>();
private String servletName;
private AbstractApplicationContext applicationContext;
public void init(ServletConfig config) throws ServletException {
super.init(config);
servletName = config.getServletName();
// parser the servlet init parameters
CAMEL_SERVLET_MAP.put(servletName, this);
String contextConfigLocation = config.getInitParameter("contextConfigLocation");
if (contextConfigLocation != null) {
//Create a spring application context for it
applicationContext = new ClassPathXmlApplicationContext(new String[]{contextConfigLocation});
}
}
public void destroy() {
CAMEL_SERVLET_MAP.remove(servletName);
if (applicationContext != null) {
applicationContext.stop();
}
}
public static CamelServlet getCamelServlet(String servletName) {
CamelServlet answer = null;
if (servletName != null) {
answer = CAMEL_SERVLET_MAP.get(servletName);
} else {
if (CAMEL_SERVLET_MAP.size() > 0) {
// return the first one servlet
Iterator<CamelServlet> iterator = CAMEL_SERVLET_MAP.values().iterator();
answer = iterator.next();
LOG.info("Since no servlet name is specified, using the first element of camelServlet map [" + answer.getServletName() + "]");
}
}
return answer;
}
}