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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.http.osgi;
import java.io.IOException;
import java.io.PrintWriter;
import java.net.InetAddress;
import java.net.MalformedURLException;
import java.net.URI;
import java.net.URL;
import java.net.UnknownHostException;
import java.util.Dictionary;
import java.util.HashMap;
import java.util.Hashtable;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.logging.Logger;
import javax.servlet.RequestDispatcher;
import javax.servlet.Servlet;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServlet;
import org.apache.tuscany.sca.host.http.SecurityContext;
import org.apache.tuscany.sca.host.http.ServletHost;
import org.apache.tuscany.sca.host.http.ServletMappingException;
import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;
import org.osgi.framework.ServiceRegistration;
/**
*
*/
public class OSGiServletHost implements ServletHost, BundleActivator {
static final String DUMMY_URI = "/_tuscany";
/**
* Default servlet
*/
private static class DefaultServlet extends HttpServlet {
@Override
public void service(ServletRequest request, ServletResponse response) throws ServletException, IOException {
PrintWriter pw = response.getWriter();
pw.println("<html><body><h1>Apache Tuscany</h1></body></html>");
pw.flush();
}
}
private Map<String, Servlet> servlets = new ConcurrentHashMap<String, Servlet>();
private static final Logger logger = Logger.getLogger(OSGiServletHost.class.getName());
private String contextPath = "/";
private int defaultPortNumber = 8080;
private ServletContext servletContext;
private Map<String, Object> attributes = new HashMap<String, Object>();
private HttpServiceWrapper wrapper;
private static BundleContext bundleContext;
public void start(BundleContext context) {
bundleContext = context;
wrapper = new HttpServiceWrapper(bundleContext);
wrapper.open();
HttpServlet defaultServlet = new DefaultServlet();
addServletMapping(DUMMY_URI, defaultServlet);
// this.servletContext = defaultServlet.getServletContext();
}
public void stop(BundleContext bundleContext) {
removeServletMapping(DUMMY_URI);
wrapper.close();
}
public void setDefaultPort(int port) {
defaultPortNumber = port;
}
public int getDefaultPort() {
return defaultPortNumber;
}
public String addServletMapping(String suri, Servlet servlet) throws ServletMappingException {
URI pathURI = URI.create(suri);
// Make sure that the path starts with a /
suri = pathURI.getPath();
if (!suri.startsWith("/")) {
suri = '/' + suri;
}
if (!suri.startsWith(contextPath)) {
suri = contextPath + suri;
}
// The OSGi HTTP service doesn't use an aster for sub-paths so strip it off
if (suri.endsWith("/*")) {
suri = suri.substring(0, suri.length()-2);
}
// In a webapp just use the given path and ignore the host and port
// as they are fixed by the Web container
try {
Dictionary<String, Object> props = new Hashtable<String, Object>();
props.put(HttpServiceWrapper.SERVLET_URI, suri);
ServiceRegistration reg = bundleContext.registerService(Servlet.class.getName(), servlet, props);
servlets.put(suri, servlet);
} catch (Exception e) {
throw new ServletMappingException(e);
}
logger.info("Added Servlet mapping: " + suri);
return suri;
}
public Servlet removeServletMapping(String suri) throws ServletMappingException {
URI pathURI = URI.create(suri);
// Make sure that the path starts with a /
suri = pathURI.getPath();
if (!suri.startsWith("/")) {
suri = '/' + suri;
}
if (!suri.startsWith(contextPath)) {
suri = contextPath + suri;
}
// In a webapp just use the given path and ignore the host and port
// as they are fixed by the Web container
try {
return servlets.remove(suri);
} catch (Exception e) {
throw new ServletMappingException(e);
}
}
public Servlet getServletMapping(String suri) throws ServletMappingException {
if (!suri.startsWith("/")) {
suri = '/' + suri;
}
if (!suri.startsWith(contextPath)) {
suri = contextPath + suri;
}
// Get the Servlet mapped to the given path
Servlet servlet = servlets.get(suri);
return servlet;
}
public URL getURLMapping(String suri) throws ServletMappingException {
URI uri = URI.create(suri);
// Get the URI scheme and port
String scheme = uri.getScheme();
if (scheme == null) {
scheme = "http";
}
int portNumber = uri.getPort();
if (portNumber == -1) {
portNumber = defaultPortNumber;
}
// Get the host
String host;
try {
host = InetAddress.getLocalHost().getHostName();
} catch (UnknownHostException e) {
host = "localhost";
}
// Construct the URL
String path = uri.getPath();
if (!path.startsWith("/")) {
path = '/' + path;
}
if (contextPath != null && !path.startsWith(contextPath)) {
path = contextPath + path;
}
URL url;
try {
url = new URL(scheme, host, portNumber, path);
} catch (MalformedURLException e) {
throw new ServletMappingException(e);
}
return url;
}
public RequestDispatcher getRequestDispatcher(String suri) throws ServletMappingException {
// Make sure that the path starts with a /
if (!suri.startsWith("/")) {
suri = '/' + suri;
}
suri = contextPath + suri;
// Get the Servlet mapped to the given path
Servlet servlet = servlets.get(suri);
if (servlet != null) {
return new ServletRequestDispatcher(suri, servlet);
}
for (Map.Entry<String, Servlet> entry : servlets.entrySet()) {
String servletPath = entry.getKey();
if (servletPath.endsWith("*")) {
servletPath = servletPath.substring(0, servletPath.length() - 1);
if (suri.startsWith(servletPath)) {
// entry key is contextPath/servletPath, WebAppRequestDispatcher only wants servletPath
return new ServletRequestDispatcher(entry.getKey().substring(contextPath.length()), entry
.getValue());
} else {
if ((suri + "/").startsWith(servletPath)) {
return new ServletRequestDispatcher(entry.getKey().substring(contextPath.length()), entry
.getValue());
}
}
}
}
// No Servlet found
return null;
}
public String getContextPath() {
return contextPath;
}
public void setContextPath(String path) {
}
/**
* TODO: How context paths work is still up in the air so for now
* this hacks in a path that gets some samples working
* can't use setContextPath as NodeImpl calls that later
*/
public void setContextPath2(String path) {
if (path != null && path.length() > 0) {
this.contextPath = path;
}
}
public void setAttribute(String name, Object value) {
if (servletContext != null) {
servletContext.setAttribute(name, value);
} else {
attributes.put(name, value);
}
}
public String getName() {
return "osgi";
}
@Override
public ServletContext getServletContext() {
// TODO Auto-generated method stub
return null;
}
@Override
public String addServletMapping(String uri, Servlet servlet, SecurityContext securityContext)
throws ServletMappingException {
return addServletMapping(uri, servlet);
}
@Override
public URL getURLMapping(String uri, SecurityContext securityContext) {
// TODO Auto-generated method stub
return null;
}
}
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