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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.expertise.restfull;
import java.io.IOException;
import java.net.URLDecoder;
import java.util.List;
import javax.servlet.Servlet;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.tuscany.expertise.Expert;
import org.osoa.sca.annotations.Reference;
import org.osoa.sca.annotations.Scope;
import org.osoa.sca.annotations.Service;
@Service(Servlet.class)
@Scope("COMPOSITE")
public class RestfulExpertiseLocator extends HttpServlet implements Servlet {
private static final long serialVersionUID = 4021701701436888369L;
@Reference
protected ExpertRegistry experts;
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String path = URLDecoder.decode(getRequestPath(request), "UTF-8");
String expertise = path.substring(1);
if (expertise != null && expertise.length() > 0 ) {
printExperts(response.getOutputStream(), experts.getExpertsByExpertise(expertise));
} else {
printExperts(response.getOutputStream(), experts.getExperts());
}
}
private void printExperts(ServletOutputStream out, List<Expert> experts) throws IOException {
out.print("<html><body>");
out.print("<h2>Expertise Locator</h2>");
if (experts.size() > 0) {
for (Expert expert: experts) {
out.print("<b>Location:</b> " + expert.getLocation() + " - " + expert.getName() +" ==> ");
for (String expertise : expert.getExpertise()) {
out.print(expertise + ";");
}
out.print("<br/>");
}
} else {
out.println("No experts found");
}
out.print("</body></html>");
}
/**
*
* @param request
* @return
*/
private static String getRequestPath(HttpServletRequest request) {
// Get the request path
String contextPath = request.getContextPath();
String servletPath = request.getServletPath();
String requestURI = request.getRequestURI();
int contextPathLength = request.getContextPath().length();
int servletPathLenght = servletPath.contains(contextPath) ? servletPath.length() - contextPath.length() : servletPath.length();
String requestPath = requestURI.substring(contextPathLength + servletPathLenght);
return requestPath;
}
}
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