/**
* 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.camel.component.atmosphere.websocket;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.camel.AsyncCallback;
import org.apache.camel.Exchange;
import org.apache.camel.Processor;
import org.apache.camel.component.servlet.ServletConsumer;
import org.atmosphere.cpr.ApplicationConfig;
import org.atmosphere.cpr.AtmosphereFramework;
import org.atmosphere.cpr.AtmosphereRequest;
import org.atmosphere.cpr.AtmosphereResponse;
import org.atmosphere.websocket.WebSocketProtocol;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
*
*/
public class WebsocketConsumer extends ServletConsumer {
private static final transient Logger LOG = LoggerFactory.getLogger(WebsocketConsumer.class);
private AtmosphereFramework framework;
public WebsocketConsumer(WebsocketEndpoint endpoint, Processor processor) {
super(endpoint, processor);
this.framework = new AtmosphereFramework(false, true);
framework.setUseNativeImplementation(false);
framework.addInitParameter(ApplicationConfig.WEBSOCKET_SUPPORT, "true");
framework.addInitParameter(ApplicationConfig.WEBSOCKET_PROTOCOL,
endpoint.isUseStreaming() ? WebsocketStreamHandler.class.getName() : WebsocketHandler.class.getName());
framework.init();
WebSocketProtocol wsp = framework.getWebSocketProtocol();
if (wsp instanceof WebsocketHandler) {
((WebsocketHandler)wsp).setConsumer(this);
} else {
// this should not normally happen
LOG.error("unexpected WebSocketHandler: {}", wsp);
}
}
@Override
public WebsocketEndpoint getEndpoint() {
return (WebsocketEndpoint)super.getEndpoint();
}
void service(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
framework.doCometSupport(AtmosphereRequest.wrap(request), AtmosphereResponse.wrap(response));
}
public void sendMessage(final String connectionKey, Object message) {
final Exchange exchange = getEndpoint().createExchange();
// set header and body
exchange.getIn().setHeader(WebsocketConstants.CONNECTION_KEY, connectionKey);
exchange.getIn().setBody(message);
// send exchange using the async routing engine
getAsyncProcessor().process(exchange, new AsyncCallback() {
public void done(boolean doneSync) {
if (exchange.getException() != null) {
getExceptionHandler().handleException("Error processing exchange", exchange, exchange.getException());
}
}
});
}
}