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/*
* 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.tuscany.sca.web.javascript.dojo;
import java.net.URI;
import java.util.logging.Logger;
import javax.servlet.Servlet;
import org.apache.tuscany.sca.core.ExtensionPointRegistry;
import org.apache.tuscany.sca.host.http.ServletHost;
import org.apache.tuscany.sca.host.http.ServletHostHelper;
import org.apache.tuscany.sca.host.http.ServletMappingException;
import org.apache.tuscany.sca.implementation.widget.javascript.WidgetImplementationJavascriptProvider;
public class DojoWidgetJavascriptProvider implements WidgetImplementationJavascriptProvider {
private final static Logger logger = Logger.getLogger(DojoWidgetJavascriptProvider.class.getName());
private static final String dojoBaseUri = URI.create("/dojo").toString();
private static final String dojoUri = URI.create("/dojo/*").toString();
private static final String tuscanyBaseUri = URI.create("/tuscany").toString();
private static final String tuscanyUri = URI.create("/tuscany/*").toString();
private static int counter = 0;
private ServletHost servletHost;
public DojoWidgetJavascriptProvider(ExtensionPointRegistry registry) {
this.servletHost = ServletHostHelper.getServletHost(registry);
}
public void start() {
if (servletHost == null) {
throw new IllegalStateException("Can't find ServletHost reference !");
}
Servlet servlet = null;
servlet = servletHost.getServletMapping(dojoBaseUri);
if(servlet == null) {
try {
DojoResourceServlet baseResourceServlet = new DojoResourceServlet();
servletHost.addServletMapping(dojoBaseUri, baseResourceServlet);
DojoResourceServlet resourceServlet = new DojoResourceServlet();
servletHost.addServletMapping(dojoUri, resourceServlet);
} catch (ServletMappingException me ) {
logger.warning("Dojo already registered at :" + dojoBaseUri);
}
}
servlet = servletHost.getServletMapping(tuscanyBaseUri);
if(servlet == null) {
try {
DojoResourceServlet baseResourceServlet = new DojoResourceServlet();
servletHost.addServletMapping(tuscanyBaseUri, baseResourceServlet);
DojoResourceServlet resourceServlet = new DojoResourceServlet();
servletHost.addServletMapping(tuscanyUri, resourceServlet);
} catch (ServletMappingException me ) {
logger.warning("Tuscany dojo extensions already registered at :" + tuscanyBaseUri);
}
}
counter += 1;
logger.info("Registered Dojo and Tuscany Dojo extensions (counter=" + counter + ")");
}
public void stop() {
if(counter > 0) {
counter = counter -= 1;
logger.info("Unregistering Dojo and Tuscany Dojo extensions (counter=" + counter + ")");
}
Servlet servlet = servletHost.getServletMapping(dojoBaseUri);
if(servlet != null && counter == 0) {
servletHost.removeServletMapping(dojoBaseUri);
servletHost.removeServletMapping(dojoUri);
servletHost.removeServletMapping(tuscanyBaseUri);
servletHost.removeServletMapping(tuscanyUri);
}
servletHost = null;
}
}
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