Examples of org.jgroups.util.Buffer

org.jgroups.util.Buffer
Buffer with an offset and length. Will be replaced with NIO equivalent once JDK 1.4 becomes baseline. This class is immutable. Note that the underlying byte[] buffer must not be changed as long as this Buffer instance is in use ! @author Bela Ban

         this.filter = filter;
         this.supportReplay = supportReplay;
      }


      public RspList call() throws Exception {
         Buffer buf;
         try {
            buf = req_marshaller.objectToBuffer(command);
         }
         catch (Exception e) {
            throw new RuntimeException("Failure to marshal argument(s)", e);

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        if(encrypt_entire_message) {
            if(msg.getSrc() == null)
                msg.setSrc(local_addr);


            Buffer serialized_msg=Util.streamableToBuffer(msg);
            byte[] encrypted_msg=code(serialized_msg.getBuf(),serialized_msg.getOffset(),serialized_msg.getLength(),false);


            // exclude existing headers, they will be seen again when we decrypt and unmarshal the msg at the receiver
            Message tmp=msg.copy(false, false).setBuffer(encrypted_msg).putHeader(this.id,hdr);
            down_prot.down(new Event(Event.MSG, tmp));
            return;

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      if (recipient != null) msg.setDest(recipient);
      return msg;
   }


   static Buffer marshallCall(Marshaller marshaller, ReplicableCommand command) {
      Buffer buf;
      try {
         buf = marshaller.objectToBuffer(command);
      } catch (Exception e) {
         throw new RuntimeException("Failure to marshal argument(s)", e);
      }

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      if (trace) log.tracef("Replication task sending %s to single recipient %s with response mode %s", command, destination, mode);
      boolean rsvp = isRsvpCommand(command);


      // Replay capability requires responses from all members!
      Response retval;
      Buffer buf;
      buf = marshallCall(marshaller, command);
      retval = card.sendMessage(constructMessage(buf, destination, oob, mode, rsvp, false),
                                new RequestOptions(mode, timeout));


      // we only bother parsing responses if we are not in ASYNC mode.

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                                               boolean oob, boolean ignoreLeavers, boolean totalOrder) throws Exception {
      if (trace) log.tracef("Replication task sending %s to addresses %s with response mode %s", command, dests, mode);
      boolean rsvp = isRsvpCommand(command);


      RspList<Object> retval = null;
      Buffer buf;
      if (totalOrder) {
         buf = marshallCall(marshaller, command);
         Message message = constructMessage(buf, null, oob, mode, rsvp, true);


         AnycastAddress address = new AnycastAddress(dests);

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   }


   @Override
   public BackupResponse backupRemotely(Collection<XSiteBackup> backups, XSiteReplicateCommand rpcCommand) throws Exception {
      log.tracef("About to send to backups %s, command %s", backups, rpcCommand);
      Buffer buf = CommandAwareRpcDispatcher.marshallCall(dispatcher.getMarshaller(), rpcCommand);
      Map<XSiteBackup, Future<Object>> syncBackupCalls = new HashMap<XSiteBackup, Future<Object>>(backups.size());
      for (XSiteBackup xsb : backups) {
         SiteMaster recipient = new SiteMaster(xsb.getSiteName());
         if (xsb.isSync()) {
            RequestOptions sync = new RequestOptions(org.jgroups.blocks.ResponseMode.GET_ALL, xsb.getTimeout());

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            DataOutputStream out=new DataOutputStream(out_stream);
            try {
                if(obj == null) {
                    out_stream.write(NULL);
                    out_stream.flush();
                    return new Buffer(out_stream.toByteArray());
                }
                if(obj instanceof MethodCall) {
                    out.writeByte(METHOD_CALL);
                    MethodCall call=(MethodCall)obj;
                    out.writeShort(call.getId());
                    Object[] args=call.getArgs();
                    if(args == null || args.length == 0) {
                        out.writeShort(0);
                    }
                    else {
                        out.writeShort(args.length);
                        for(int i=0; i < args.length; i++) {
                            Util.objectToStream(args[i], out);
                        }
                    }
                }
                else if(obj instanceof Cache.Value) {
                    Cache.Value value=(Cache.Value)obj;
                    out.writeByte(VALUE);
                    out.writeLong(value.getTimeout());
                    Util.objectToStream(value.getValue(), out);
                }
                else {
                    out.writeByte(OBJ);
                    Util.objectToStream(obj, out);
                }
                out.flush();
                return new Buffer(out_stream.toByteArray());
            }
            finally {
                Util.close(out);
            }
        }

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        receiver=null;
        super.stop();
    }


    void sendMcastDiscoveryRequest(Message msg) {
        Buffer           buf;
        DatagramPacket   packet;
        DataOutputStream out=null;


        try {
            if(msg.getSrc() == null)
                msg.setSrc(local_addr);
            out_stream.reset();
            out=new DataOutputStream(out_stream);
            msg.writeTo(out);
            out.flush(); // flushes contents to out_stream
            buf=new Buffer(out_stream.getRawBuffer(), 0, out_stream.size());
            packet=new DatagramPacket(buf.getBuf(), buf.getOffset(), buf.getLength(), mcast_addr, mcast_port);
            if(mcast_send_sockets != null) {
                MulticastSocket s;
                for(int i=0; i < mcast_send_sockets.length; i++) {
                    s=mcast_send_sockets[i];
                    try {

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         if (recipient != null) msg.setDest(recipient);
         return msg;
      }


      private Buffer marshallCall() {
         Buffer buf;
         try {
            buf = req_marshaller.objectToBuffer(command);
         } catch (Exception e) {
            throw new RuntimeException("Failure to marshal argument(s)", e);
         }

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         distributedSync.blockUntilNoJoinsInProgress();


         if (filter != null) mode = GroupRequest.GET_FIRST;


         RspList retval = null;
         Buffer buf;
         if (broadcast || FORCE_MCAST) {
            RequestOptions opts = new RequestOptions();
            opts.setMode(mode);
            opts.setTimeout(timeout);
            opts.setRspFilter(filter);

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org.infinispan.remoting.transport.jgroups.JGroupsTransport

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