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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.host.webapp;
import java.net.URI;
import java.util.HashMap;
import java.util.Map;
import java.util.logging.Logger;
import javax.servlet.Servlet;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import org.apache.tuscany.sca.host.http.DefaultResourceServlet;
import org.apache.tuscany.sca.host.http.ServletHost;
import org.apache.tuscany.sca.host.http.ServletMappingException;
/**
* ServletHost impl singleton thats shared between the SCADomain
* instance and the TuscanyServlet instance.
* TODO: using a static singleton seems a big hack but how
* should it be shared? Need some way for TuscanyServlet
* to pull it out of the SCADomain instance.
*
*/
public class WebAppServletHost implements ServletHost {
private static final Logger logger = Logger.getLogger(WebAppServletHost.class.getName());
private static WebAppServletHost instance = new WebAppServletHost();
private Map<String, Servlet> servlets;
private WebAppServletHost() {
servlets = new HashMap<String, Servlet>();
}
public void addServletMapping(String path, Servlet servlet) throws ServletMappingException {
URI pathURI = URI.create(path);
// Ignore registrations of our default resource servlet, as resources
// are already served by the web container
if (servlet instanceof DefaultResourceServlet) {
//TODO maybe ignore registration of the servlet only if it's
// mapped to "/" and still honor other registrations, to do this
// we will need a way to determine what's the default servlet
// in the web container that we are running in.
return;
}
// For webapps just use the path and ignore the host and port
path = pathURI.getPath();
if (!path.startsWith("/")) {
path = '/' + path;
}
servlets.put(path, servlet);
logger.info("addServletMapping: " + path);
}
public Servlet removeServletMapping(String path) throws ServletMappingException {
URI pathURI = URI.create(path);
path = pathURI.getPath();
if (!path.startsWith("/")) {
path = '/' + path;
}
// for webapps just use the path and ignore the host and port
return servlets.remove(path);
}
public Servlet getServlet(String path) {
if (path == null) {
return null;
}
if (!path.startsWith("/")) {
path = '/' + path;
}
Servlet servlet = servlets.get(path);
if (servlet != null) {
return servlet;
}
for (String servletPath : servlets.keySet()) {
if (servletPath.endsWith("*")) {
if (path.startsWith(servletPath.substring(0, servletPath.length() - 1))) {
return servlets.get(servletPath);
}
}
}
return null;
}
public static WebAppServletHost getInstance() {
return instance;
}
public void init(ServletConfig config) throws ServletException {
for (Servlet servlet : servlets.values()) {
servlet.init(config);
}
}
}
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