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The Jadex platform package contains implementations of platform services as well as the platform component itself.
package jadex.platform.service.message;
import java.io.ByteArrayInputStream;
import java.util.Arrays;
import java.util.Map;
import jadex.bridge.ITransportComponentIdentifier;
import jadex.bridge.fipa.SFipa;
import jadex.bridge.service.types.message.ICodec;
import jadex.bridge.service.types.message.IEncodingContext;
import jadex.bridge.service.types.message.MessageType;
import jadex.commons.transformation.binaryserializer.IErrorReporter;
import jadex.platform.service.message.transport.ITransport;
import jadex.platform.service.message.transport.MessageEnvelope;
import jadex.platform.service.message.transport.codecs.CodecFactory;
/**
* The manager send task is responsible for coordinating
* the sending of a message to a single destination using
* multiple available transports.
*/
public class MapSendTask extends AbstractSendTask implements ISendTask
{
//-------- constants --------
/** Constant for string based map message. */
public static final byte MESSAGE_TYPE_MAP = 1;
//-------- attributes --------
/** The message. */
protected Map message;
/** The message type. */
protected MessageType messagetype;
/** The classloader. */
protected ClassLoader classloader;
//-------- constructors ---------
/**
* Create a new manager send task.
*/
public MapSendTask(Map message, MessageType messagetype, ITransportComponentIdentifier[] receivers,
ITransport[] transports, ICodec[] codecs, ClassLoader classloader, IEncodingContext encodingcontext)//, SendManager manager)
{
super(receivers, transports, codecs, (Map)message.get(SFipa.X_NONFUNCTIONAL));
if(codecs==null || codecs.length==0)
throw new IllegalArgumentException("Codecs must not null.");
this.message = message;
this.messagetype = messagetype;
this.classloader = classloader;
this.encodingcontext = encodingcontext;
}
//-------- methods used by message service --------
/**
* Get the message.
* @return the message.
*/
public Object getMessage()
{
return new MessageEnvelope(message, Arrays.asList(receivers), getMessageType().getName());
// return message;
}
/**
* Get the messagetype.
* @return the messagetype.
*/
public MessageType getMessageType()
{
return messagetype;
}
/**
* Provide the data as a byte array.
*/
protected byte[] fetchData()
{
MessageEnvelope envelope = new MessageEnvelope(message, Arrays.asList(receivers), messagetype.getName());
return createData(envelope, codecs, classloader, encodingcontext);
}
/**
* Get the prolog bytes.
* Separated from data to avoid array copies.
* Message service expects messages to be delivered in the form {prolog}{data}.
* @return The prolog bytes.
*/
public byte[] fetchProlog()
{
return createProlog(codecids);
}
/**
* Create prolog data.
*/
public static byte[] createProlog(byte[] codecids)
{
byte[] ret = new byte[2+codecids.length];
ret[0] = MESSAGE_TYPE_MAP;
ret[1] = (byte)codecids.length;
System.arraycopy(codecids, 0, ret, 2, codecids.length);
return ret;
}
/**
* Create the data.
*/
public static byte[] createData(Object msg, ICodec[] codecs, ClassLoader cl, IEncodingContext context)
{
Object ret = msg;
for(int i=0; i codecs, ClassLoader cl, IErrorReporter rep)
{
int idx = 1; // Skip message type.
byte[] codec_ids = new byte[rawmsg[idx++]];
for(int i=0; i-1; i--)
{
ICodec dec = codecs.get(Byte.valueOf(codec_ids[i]));
if (dec == null) {
throw new RuntimeException(CodecFactory.CODEC_NAMES[codec_ids[i]] + " not available!");
}
tmp = dec.decode(tmp, cl, rep);
}
return tmp;
}
/**
* Get the codecs that have been used for encoding the message.
*/
public static ICodec[] getCodecs(byte[] rawmsg, Map codecs)
{
int idx = 1; // Skip message type.
ICodec[] mcodecs = new ICodec[rawmsg[idx++]];
for(int i=0; i