/**
* 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.cxf.transport.websocket.atmosphere;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.cxf.Bus;
import org.apache.cxf.common.logging.LogUtils;
import org.apache.cxf.message.Message;
import org.apache.cxf.service.model.EndpointInfo;
import org.apache.cxf.transport.http.DestinationRegistry;
import org.apache.cxf.transport.servlet.ServletDestination;
import org.apache.cxf.transport.websocket.WebSocketDestinationService;
import org.atmosphere.cpr.ApplicationConfig;
import org.atmosphere.cpr.AtmosphereFramework;
import org.atmosphere.cpr.AtmosphereRequestImpl;
import org.atmosphere.cpr.AtmosphereResource;
import org.atmosphere.cpr.AtmosphereResponseImpl;
import org.atmosphere.handler.AbstractReflectorAtmosphereHandler;
/**
* WebSocket Servlet Destination based on Atmosphere
*/
public class AtmosphereWebSocketServletDestination extends ServletDestination implements
WebSocketDestinationService {
private static final Logger LOG = LogUtils.getL7dLogger(AtmosphereWebSocketServletDestination.class);
private AtmosphereFramework framework;
public AtmosphereWebSocketServletDestination(Bus bus, DestinationRegistry registry, EndpointInfo ei,
String path) throws IOException {
super(bus, registry, ei, path);
framework = create(bus);
}
private AtmosphereFramework create(Bus bus) {
final AtmosphereFramework instance = new AtmosphereFramework(false, true);
instance.setUseNativeImplementation(false);
instance.addInitParameter(ApplicationConfig.PROPERTY_NATIVE_COMETSUPPORT, "true");
instance.addInitParameter(ApplicationConfig.PROPERTY_SESSION_SUPPORT, "true");
instance.addInitParameter(ApplicationConfig.WEBSOCKET_SUPPORT, "true");
instance.addInitParameter(ApplicationConfig.WEBSOCKET_PROTOCOL_EXECUTION, "true");
// workaround for atmosphere's jsr356 initialization requiring servletConfig
instance.addInitParameter(ApplicationConfig.WEBSOCKET_SUPPRESS_JSR356, "true");
AtmosphereUtils.addInterceptors(instance, bus);
instance.addAtmosphereHandler("/", new DestinationHandler());
return instance;
}
@Override
public void finalizeConfig() {
framework.init();
}
@Override
public void onServletConfigAvailable(ServletConfig config) throws ServletException {
// Very likely there is JSR-356 implementation available, let us reconfigure the Atmosphere framework
// to use it since ServletConfig instance is already available.
final Object container = config.getServletContext()
.getAttribute("javax.websocket.server.ServerContainer");
if (container != null) {
if (framework.initialized()) {
framework.destroy();
}
framework = create(getBus());
framework.addInitParameter(ApplicationConfig.PROPERTY_NATIVE_COMETSUPPORT, "false");
framework.addInitParameter(ApplicationConfig.WEBSOCKET_SUPPRESS_JSR356, "false");
framework.init(config);
}
}
@Override
public void invoke(ServletConfig config, ServletContext context, HttpServletRequest req,
HttpServletResponse resp) throws IOException {
if (AtmosphereUtils.useAtmosphere(req)) {
try {
framework.doCometSupport(AtmosphereRequestImpl.wrap(req),
AtmosphereResponseImpl.wrap(resp));
} catch (ServletException e) {
throw new IOException(e);
}
return;
}
super.invoke(config, context, req, resp);
}
@Override
public void invokeInternal(ServletConfig config, ServletContext context, HttpServletRequest req,
HttpServletResponse resp) throws IOException {
super.invoke(config, context, req, resp);
}
@Override
protected void setupMessage(Message inMessage, ServletConfig config, ServletContext context,
HttpServletRequest req, HttpServletResponse resp) throws IOException {
super.setupMessage(inMessage, config, context, req, resp);
// There are some complications with detecting a full request URL in JSR-356 spec, so
// every WS Container has different interpretation.
//
// https://bz.apache.org/bugzilla/show_bug.cgi?id=56573
// https://java.net/jira/browse/WEBSOCKET_SPEC-228
//
// We have do manually inject the transport endpoint address, otherwise the
// JAX-RS resources won't be found.
final Object address = req.getAttribute("org.apache.cxf.transport.endpoint.address");
if (address == null) {
String basePath = (String)inMessage.get(Message.BASE_PATH);
req.setAttribute("org.apache.cxf.transport.endpoint.address", basePath);
}
}
@Override
public void shutdown() {
try {
framework.destroy();
} catch (Exception e) {
// ignore
} finally {
super.shutdown();
}
}
private class DestinationHandler extends AbstractReflectorAtmosphereHandler {
@Override
public void onRequest(final AtmosphereResource resource) throws IOException {
LOG.fine("onRequest");
try {
invokeInternal(null,
resource.getRequest().getServletContext(), resource.getRequest(), resource.getResponse());
} catch (Exception e) {
LOG.log(Level.WARNING, "Failed to invoke service", e);
}
}
}
// used for internal tests
AtmosphereFramework getAtmosphereFramework() {
return framework;
}
}