001 /**
002 * GRANITE DATA SERVICES
003 * Copyright (C) 2006-2013 GRANITE DATA SERVICES S.A.S.
004 *
005 * This file is part of the Granite Data Services Platform.
006 *
007 * Granite Data Services is free software; you can redistribute it and/or
008 * modify it under the terms of the GNU Lesser General Public
009 * License as published by the Free Software Foundation; either
010 * version 2.1 of the License, or (at your option) any later version.
011 *
012 * Granite Data Services is distributed in the hope that it will be useful,
013 * but WITHOUT ANY WARRANTY; without even the implied warranty of
014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
015 * General Public License for more details.
016 *
017 * You should have received a copy of the GNU Lesser General Public
018 * License along with this library; if not, write to the Free Software
019 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
020 * USA, or see <http://www.gnu.org/licenses/>.
021 */
022 package org.granite.messaging.amf.process;
023
024 import java.util.Iterator;
025 import java.util.List;
026
027 import org.granite.context.AMFContextImpl;
028 import org.granite.context.GraniteContext;
029 import org.granite.logging.Logger;
030 import org.granite.messaging.amf.AMF0Body;
031 import org.granite.messaging.amf.AMF0Message;
032 import org.granite.messaging.amf.AMF3Object;
033 import org.granite.util.UUIDUtil;
034
035 import flex.messaging.messages.ErrorMessage;
036 import flex.messaging.messages.Message;
037
038 /**
039 * @author Franck WOLFF
040 */
041 public abstract class AMF0MessageProcessor {
042
043 private static final Logger log = Logger.getLogger(AMF0MessageProcessor.class);
044
045 public static AMF0Message process(AMF0Message amf0RequestMessage) {
046
047 log.debug(">> Processing AMF0 request:%s", amf0RequestMessage);
048
049 GraniteContext context = GraniteContext.getCurrentInstance();
050 AMFContextImpl amf = (AMFContextImpl)context.getAMFContext();
051
052 AMF0Message amf0ResponseMessage = new AMF0Message();
053 amf0ResponseMessage.setVersion(amf0RequestMessage.getVersion());
054
055 ErrorMessage loginError = null;
056 String dsId = null;
057 for (Iterator<AMF0Body> bodies = amf0RequestMessage.getBodies(); bodies.hasNext(); ) {
058 AMF0Body requestBody = bodies.next();
059
060 Object value = requestBody.getValue();
061
062 Message amf3RequestMessage = null;
063
064 if (value instanceof List<?>)
065 amf3RequestMessage = (Message)((List<?>)value).get(0);
066 else
067 amf3RequestMessage = (Message)((Object[])value)[0];
068
069 log.debug(">> Processing AMF3 request:\n%s", amf3RequestMessage);
070
071 // If we get a login error (setCredentials on flex side), we don't execute subsequent requests and
072 // just copy the initial login error (GDS specific, otherwise the FaultEvent dispatched by the
073 // RemoteObject is not the login error but an authorization error after actual service call).
074 Message amf3ResponseMessage = null;
075 if (loginError == null) {
076 amf.setCurrentAmf3Message(amf3RequestMessage);
077
078 amf.getCustomResponseHeaders().clear();
079 amf3ResponseMessage = AMF3MessageProcessor.process(amf3RequestMessage);
080
081 if ((amf3ResponseMessage instanceof ErrorMessage) && ((ErrorMessage)amf3ResponseMessage).loginError())
082 loginError = (ErrorMessage)amf3ResponseMessage;
083
084 // For SDK 2.0.1_Hotfix2+ (LCDS 2.5+).
085 if ("nil".equals(amf3ResponseMessage.getHeader(Message.DS_ID_HEADER))) {
086 amf3ResponseMessage.getHeaders().put(
087 Message.DS_ID_HEADER,
088 (dsId == null ? (dsId = UUIDUtil.randomUUID()) : dsId)
089 );
090 }
091 amf3ResponseMessage.getHeaders().putAll(amf.getCustomResponseHeaders());
092 }
093 else
094 amf3ResponseMessage = loginError.copy(amf3RequestMessage);
095
096 log.debug("<< Got AMF3 response:\n%s", amf3ResponseMessage);
097
098 AMF3Object data = new AMF3Object(amf3ResponseMessage);
099 AMF0Body responseBody = new AMF0Body(
100 getResponseTarget(requestBody, amf3ResponseMessage), "", data, AMF0Body.DATA_TYPE_AMF3_OBJECT
101 );
102 amf0ResponseMessage.addBody(responseBody);
103 }
104
105 log.debug("<< Returning AMF0 response:%s", amf0ResponseMessage);
106
107 return amf0ResponseMessage;
108 }
109
110 private static String getResponseTarget(AMF0Body requestBody, Message responseMessage) {
111 if (responseMessage instanceof ErrorMessage)
112 return requestBody.getResponse() + "/onStatus";
113 return requestBody.getResponse() + "/onResult";
114 }
115 }