org.jgroups.protocols.SERIALIZE Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
package org.jgroups.protocols;
import org.jgroups.BytesMessage;
import org.jgroups.Message;
import org.jgroups.MessageFactory;
import org.jgroups.annotations.MBean;
import org.jgroups.conf.ClassConfigurator;
import org.jgroups.protocols.pbcast.GMS;
import org.jgroups.stack.Protocol;
import org.jgroups.util.ByteArray;
import org.jgroups.util.FastArray;
import org.jgroups.util.MessageBatch;
import org.jgroups.util.Util;
/**
* Serializes the entire message (including payload, headers, flags and destination and src) into the payload of
* another message that's then sent. Deserializes the payload of an incoming message into a new message that's sent
* up the stack.
* To be used with {@link ASYM_ENCRYPT} or {@link SYM_ENCRYPT} when the entire message (including the headers) needs to
* be encrypted. Can be used as a replacement for the deprecated attribute encrypt_entire_message in the above encryption
* protocols.
* See https://issues.redhat.com/browse/JGRP-2273 for details.
* @author Bela Ban
* @since 4.0.12
*/
@MBean(description="Serializes entire message into the payload of another message")
public class SERIALIZE extends Protocol {
protected static final short GMS_ID=ClassConfigurator.getProtocolId(GMS.class);
//@Property(description="If true, messages with no payload will not be serialized")
//protected boolean exclude_empty_msgs=true;
protected MessageFactory mf;
public void init() throws Exception {
super.init();
mf=getTransport().getMessageFactory();
}
public Object down(Message msg) {
if(msg.getSrc() == null)
msg.setSrc(local_addr);
ByteArray serialized_msg=null;
try {
serialized_msg=Util.messageToBuffer(msg);
}
catch(Exception e) {
throw new RuntimeException(e);
}
// exclude existing headers, they will be seen again when we unmarshal the message at the receiver
Message tmp=new BytesMessage(msg.dest(), serialized_msg).setFlag(msg.getFlags(), false);
GMS.GmsHeader hdr=msg.getHeader(GMS_ID);
if(hdr != null)
tmp.putHeader(GMS_ID, hdr);
return down_prot.down(tmp);
}
public Object up(Message msg) {
try {
Message ret=deserialize(msg);
return up_prot.up(ret);
}
catch(Exception e) {
throw new RuntimeException(String.format("failed deserialize message from %s", msg.getSrc()), e);
}
}
public void up(MessageBatch batch) {
FastArray.FastIterator it=(FastArray.FastIterator)batch.iterator();
while(it.hasNext()) {
Message msg=it.next();
try {
Message deserialized_msg=deserialize(msg);
it.replace(deserialized_msg);
}
catch(Exception e) {
log.error("failed deserializing message", e);
it.remove();
}
}
if(!batch.isEmpty())
up_prot.up(batch);
}
protected Message deserialize(Message msg) throws Exception {
try {
Message ret=Util.messageFromBuffer(msg.getArray(), msg.getOffset(), msg.getLength(), mf);
if(ret.getDest() == null)
ret.setDest(msg.getDest());
if(ret.getSrc() == null)
ret.setSrc(msg.getSrc());
return ret;
}
catch(Exception e) {
throw new Exception(String.format("failed deserialize message from %s", msg.getSrc()), e);
}
}
}