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.amf.process;
022
023 import java.util.Iterator;
024 import java.util.List;
025
026 import org.granite.context.AMFContextImpl;
027 import org.granite.context.GraniteContext;
028 import org.granite.logging.Logger;
029 import org.granite.messaging.amf.AMF0Body;
030 import org.granite.messaging.amf.AMF0Message;
031 import org.granite.messaging.amf.AMF3Object;
032 import org.granite.util.UUIDUtil;
033
034 import flex.messaging.messages.ErrorMessage;
035 import flex.messaging.messages.Message;
036
037 /**
038 * @author Franck WOLFF
039 */
040 public abstract class AMF0MessageProcessor {
041
042 private static final Logger log = Logger.getLogger(AMF0MessageProcessor.class);
043
044 public static AMF0Message process(AMF0Message amf0RequestMessage) {
045
046 log.debug(">> Processing AMF0 request:%s", amf0RequestMessage);
047
048 GraniteContext context = GraniteContext.getCurrentInstance();
049 AMFContextImpl amf = (AMFContextImpl)context.getAMFContext();
050
051 AMF0Message amf0ResponseMessage = new AMF0Message();
052 amf0ResponseMessage.setVersion(amf0RequestMessage.getVersion());
053
054 ErrorMessage loginError = null;
055 String dsId = null;
056 for (Iterator<AMF0Body> bodies = amf0RequestMessage.getBodies(); bodies.hasNext(); ) {
057 AMF0Body requestBody = bodies.next();
058
059 Object value = requestBody.getValue();
060
061 Message amf3RequestMessage = null;
062
063 if (value instanceof List<?>)
064 amf3RequestMessage = (Message)((List<?>)value).get(0);
065 else
066 amf3RequestMessage = (Message)((Object[])value)[0];
067
068 log.debug(">> Processing AMF3 request:\n%s", amf3RequestMessage);
069
070 // If we get a login error (setCredentials on flex side), we don't execute subsequent requests and
071 // just copy the initial login error (GDS specific, otherwise the FaultEvent dispatched by the
072 // RemoteObject is not the login error but an authorization error after actual service call).
073 Message amf3ResponseMessage = null;
074 if (loginError == null) {
075 amf.setCurrentAmf3Message(amf3RequestMessage);
076
077 amf.getCustomResponseHeaders().clear();
078 amf3ResponseMessage = AMF3MessageProcessor.process(amf3RequestMessage);
079
080 if ((amf3ResponseMessage instanceof ErrorMessage) && ((ErrorMessage)amf3ResponseMessage).loginError())
081 loginError = (ErrorMessage)amf3ResponseMessage;
082
083 // For SDK 2.0.1_Hotfix2+ (LCDS 2.5+).
084 if ("nil".equals(amf3ResponseMessage.getHeader(Message.DS_ID_HEADER))) {
085 amf3ResponseMessage.getHeaders().put(
086 Message.DS_ID_HEADER,
087 (dsId == null ? (dsId = UUIDUtil.randomUUID()) : dsId)
088 );
089 }
090 amf3ResponseMessage.getHeaders().putAll(amf.getCustomResponseHeaders());
091 }
092 else
093 amf3ResponseMessage = loginError.copy(amf3RequestMessage);
094
095 log.debug("<< Got AMF3 response:\n%s", amf3ResponseMessage);
096
097 AMF3Object data = new AMF3Object(amf3ResponseMessage);
098 AMF0Body responseBody = new AMF0Body(
099 getResponseTarget(requestBody, amf3ResponseMessage), "", data, AMF0Body.DATA_TYPE_AMF3_OBJECT
100 );
101 amf0ResponseMessage.addBody(responseBody);
102 }
103
104 log.debug("<< Returning AMF0 response:%s", amf0ResponseMessage);
105
106 return amf0ResponseMessage;
107 }
108
109 private static String getResponseTarget(AMF0Body requestBody, Message responseMessage) {
110 if (responseMessage instanceof ErrorMessage)
111 return requestBody.getResponse() + "/onStatus";
112 return requestBody.getResponse() + "/onResult";
113 }
114 }