001 /*
002 GRANITE DATA SERVICES
003 Copyright (C) 2011 GRANITE DATA SERVICES S.A.S.
004
005 This file is part of Granite Data Services.
006
007 Granite Data Services is free software; you can redistribute it and/or modify
008 it under the terms of the GNU Library General Public License as published by
009 the Free Software Foundation; either version 2 of the License, or (at your
010 option) any later version.
011
012 Granite Data Services is distributed in the hope that it will be useful, but
013 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
014 FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
015 for more details.
016
017 You should have received a copy of the GNU Library General Public License
018 along with this library; if not, see <http://www.gnu.org/licenses/>.
019 */
020
021 package org.granite.messaging.webapp;
022
023 import java.io.BufferedInputStream;
024 import java.io.IOException;
025 import java.io.InputStream;
026 import java.io.OutputStream;
027
028 import javax.servlet.ServletContext;
029 import javax.servlet.ServletException;
030 import javax.servlet.http.HttpServletRequest;
031 import javax.servlet.http.HttpServletResponse;
032
033 import org.granite.config.GraniteConfig;
034 import org.granite.config.flex.ServicesConfig;
035 import org.granite.context.GraniteContext;
036 import org.granite.logging.Logger;
037 import org.granite.messaging.amf.AMF0Message;
038 import org.granite.messaging.amf.io.AMF0Deserializer;
039 import org.granite.messaging.amf.io.AMF0Serializer;
040 import org.granite.messaging.amf.process.AMF0MessageProcessor;
041
042 /**
043 * @author Franck WOLFF
044 */
045 public class AMFEndpoint {
046
047 private static final Logger log = Logger.getLogger(AMFEndpoint.class);
048
049 public static void service(GraniteConfig graniteConfig, ServicesConfig servicesConfig, ServletContext context,
050 HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
051 log.debug(">> Incoming AMF0 request from: %s", request.getRequestURL());
052
053 InputStream is = null;
054 OutputStream os = null;
055
056 try {
057 is = new BufferedInputStream(request.getInputStream());
058
059 HttpGraniteContext.createThreadIntance(
060 graniteConfig, servicesConfig, context,
061 request, response
062 );
063
064 log.debug(">> Deserializing AMF0 request...");
065
066 AMF0Deserializer deserializer = new AMF0Deserializer(is);
067 AMF0Message amf0Request = deserializer.getAMFMessage();
068
069 log.debug(">> Processing AMF0 request: %s", amf0Request);
070
071 AMF0Message amf0Response = AMF0MessageProcessor.process(amf0Request);
072
073 log.debug("<< Serializing AMF0 response: %s", amf0Response);
074
075 response.setStatus(HttpServletResponse.SC_OK);
076 response.setContentType(AMF0Message.CONTENT_TYPE);
077 response.setDateHeader("Expire", 0L);
078 response.setHeader("Cache-Control", "no-store");
079
080 os = response.getOutputStream();
081 AMF0Serializer serializer = new AMF0Serializer(os);
082
083 serializer.serializeMessage(amf0Response);
084
085 response.flushBuffer();
086 }
087 catch (IOException e) {
088 if ("org.apache.catalina.connector.ClientAbortException".equals(e.getClass().getName()))
089 log.debug(e, "Connection closed by client");
090 else
091 log.error(e, "AMF message error");
092 throw e;
093 }
094 catch (Exception e) {
095 log.error(e, "AMF message error");
096 throw new ServletException(e);
097 }
098 finally {
099 GraniteContext.release();
100 }
101 }
102 }