| /* |
| * 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 flex.messaging.io.amf; |
| |
| import flex.messaging.io.MessageIOConstants; |
| import flex.messaging.io.MessageSerializer; |
| import flex.messaging.io.SerializationContext; |
| |
| import java.io.IOException; |
| import java.io.OutputStream; |
| |
| public class AmfMessageSerializer implements MessageSerializer { |
| public static final int UNKNOWN_CONTENT_LENGTH = 1; //-1; |
| |
| protected Amf0Output amfOut; |
| |
| protected boolean isDebug; |
| protected AmfTrace debugTrace; |
| protected int version; |
| |
| public AmfMessageSerializer() { |
| } |
| |
| public void setVersion(int value) { |
| version = value; |
| } |
| |
| public void initialize(SerializationContext context, OutputStream out, AmfTrace trace) { |
| amfOut = new Amf0Output(context); |
| amfOut.setOutputStream(out); |
| amfOut.setAvmPlus(version >= MessageIOConstants.AMF3); |
| |
| debugTrace = trace; |
| isDebug = trace != null; |
| amfOut.setDebugTrace(debugTrace); |
| } |
| |
| /** |
| * Serializes a message to the output stream. |
| * |
| * @param m message to serialize |
| * @throws IOException |
| */ |
| public void writeMessage(ActionMessage m) throws IOException { |
| if (isDebug) |
| debugTrace.startResponse("Serializing AMF/HTTP response"); |
| |
| int version = m.getVersion(); |
| |
| amfOut.setAvmPlus(version >= MessageIOConstants.AMF3); |
| |
| // Write packet header |
| amfOut.writeShort(version); |
| |
| if (isDebug) |
| debugTrace.version(version); |
| |
| // Write out headers |
| int headerCount = m.getHeaderCount(); |
| amfOut.writeShort(headerCount); |
| for (int i = 0; i < headerCount; ++i) { |
| MessageHeader header = m.getHeader(i); |
| |
| if (isDebug) |
| debugTrace.startHeader(header.getName(), header.getMustUnderstand(), i); |
| |
| writeHeader(header); |
| |
| if (isDebug) |
| debugTrace.endHeader(); |
| } |
| |
| // Write out the bodies |
| int bodyCount = m.getBodyCount(); |
| amfOut.writeShort(bodyCount); |
| for (int i = 0; i < bodyCount; ++i) { |
| MessageBody body = m.getBody(i); |
| |
| if (isDebug) |
| debugTrace.startMessage(body.getTargetURI(), body.getResponseURI(), i); |
| |
| writeBody(body); |
| |
| if (isDebug) |
| debugTrace.endMessage(); |
| } |
| } |
| |
| /** |
| * Serializes a message header to the output stream. |
| * |
| * @param h header to serialize |
| * @throws IOException if write fails. |
| */ |
| public void writeHeader(MessageHeader h) throws IOException { |
| amfOut.writeUTF(h.getName()); |
| amfOut.writeBoolean(h.getMustUnderstand()); |
| amfOut.writeInt(UNKNOWN_CONTENT_LENGTH); |
| amfOut.reset(); |
| writeObject(h.getData()); |
| } |
| |
| /** |
| * Serializes a message body to the output stream. |
| * |
| * @param b body to serialize |
| * @throws IOException if write fails. |
| */ |
| public void writeBody(MessageBody b) throws IOException { |
| if (b.getTargetURI() == null) |
| amfOut.writeUTF("null"); |
| else |
| amfOut.writeUTF(b.getTargetURI()); |
| |
| if (b.getResponseURI() == null) |
| amfOut.writeUTF("null"); |
| else |
| amfOut.writeUTF(b.getResponseURI()); |
| |
| amfOut.writeInt(UNKNOWN_CONTENT_LENGTH); |
| amfOut.reset(); |
| |
| Object data = b.getData(); |
| writeObject(data); |
| } |
| |
| /** |
| * Serializes an Object directly to the output stream. |
| * |
| * @param value - the Object to write to the AMF stream. |
| */ |
| public void writeObject(Object value) throws IOException { |
| amfOut.writeObject(value); |
| } |
| } |