/*
* Copyright (c) 2003, KNOPFLERFISH project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* - Neither the name of the KNOPFLERFISH project nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.knopflerfish.bundle.httpconsole;
import java.util.Hashtable;
import javax.servlet.http.HttpServlet;
import org.osgi.framework.BundleContext;
import org.osgi.framework.ServiceListener;
import org.osgi.framework.ServiceReference;
import org.osgi.framework.InvalidSyntaxException;
import org.osgi.framework.ServiceEvent;
import org.osgi.util.tracker.ServiceTracker;
import org.osgi.service.http.HttpService;
import org.osgi.service.http.HttpContext;
/**
* <p>
* Wrapper class which listens for all framework services of
* class HttpServlet or HttpContext. Each such service is picked
* up and installed into actual running HttpServices
* </p>
* <p>
* <p>
* The alias used for the servlet/resource is taken from the
* PROP_ALIAS service property.
* </p>
* <p>
* The resource dir used for contexts is taken from the
* PROP_DIR service property.
* </p>
*/
public class HttpWrapper {
/**
* Service property name for HttpServlet and HttpContexts alias
*
* <p>
* Value is <tt>httpwrapper.resource.alias</tt>
* </p>
*/
public static String PROP_ALIAS = "httpwrapper.resource.alias";
/**
* Service property name for HttpContext resource dir
*
* <p>
* Value is <tt>httpwrapper.resource.dir</tt>
* </p>
*/
public static String PROP_DIR = "httpwrapper.resource.dir";
BundleContext bc;
HttpServlet servlet;
HttpContext context;
HttpWrapper(BundleContext bc, HttpServlet servlet, HttpContext context) {
this.bc = bc;
this.servlet = servlet;
this.context = context;
}
void open() {
ServiceListener sl = new ServiceListener() {
public void serviceChanged(ServiceEvent ev) {
ServiceReference sr = ev.getServiceReference();
switch(ev.getType()) {
case ServiceEvent.REGISTERED:
{
try {
register(sr);
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
};
String filter = "(objectclass=" + HttpService.class.getName() + ")";
try {
bc.addServiceListener(sl, filter);
ServiceReference[] srl = bc.getServiceReferences(null, filter);
for(int i = 0; srl != null && i < srl.length; i++) {
register(srl[i]);
}
} catch (InvalidSyntaxException e) {
e.printStackTrace();
}
}
void register(ServiceReference sr) {
HttpService http = (HttpService) bc.getService(sr);
if (http == null) {
Activator.log.warn("http resource is null");
return;
}
try {
Hashtable props = new Hashtable();
http.registerServlet(Activator.SERVLET_ALIAS, servlet, props, null);
http.registerResources(Activator.RES_ALIAS, Activator.RES_DIR, context);
} catch (Exception e) {
Activator.log.error("Failed to register resource", e);
}
}
}