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 (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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         // Replay capability requires responses from all members!
         ResponseMode mode = supportReplay ? ResponseMode.GET_ALL : this.mode;


         RspList<Object> 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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   }


   @Override
   public BackupResponse backupRemotely(Collection<XSiteBackup> backups, ReplicableCommand rpcCommand) throws Exception {
      log.tracef("About to send to backups %s, command %s", backups, rpcCommand);
      Buffer buf = dispatcher.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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      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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      boolean rsvp = command instanceof StateRequestCommand || command instanceof StateResponseCommand
            || command instanceof CacheTopologyControlCommand
            || isRsvpCommand(command);


      Response retval;
      Buffer buf;
      buf = marshallCall(marshaller, command);
      retval = card.sendMessage(constructMessage(buf, destination, oob, mode, rsvp),
                                new RequestOptions(mode, timeout));


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

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      /// HACK ALERT!  Used for ISPN-1789.  Enable RSVP if the command is a cache topology control command.
      boolean rsvp = command instanceof CacheTopologyControlCommand
            || isRsvpCommand(command);


      RspList<Object> retval = null;
      Buffer buf;
      if (broadcast || FORCE_MCAST) {
         buf = marshallCall(marshaller, command);
         retval = card.castMessage(dests, constructMessage(buf, null, oob, mode, rsvp),
                                   new RequestOptions(mode, timeout, false, filter));
      } else {

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            return buf == null? null : marshaller.objectFromByteBuffer(buf);
        }


        public Buffer objectToBuffer(Object obj) throws Exception {
            byte[] buf=marshaller.objectToByteBuffer(obj);
            return new Buffer(buf, 0, buf.length);
        }

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      commandAwareRpcDispatcher.handle(nonOobRequest, null);
      Assert.assertFalse(executorService.hasExecutedCommand, "Command " + command.getClass() + " dispatched wrongly.");
   }


   private Message serialize(ReplicableCommand command, boolean oob, Address from) {
      Buffer buffer;
      try {
         buffer = marshaller.objectToBuffer(command);
      } catch (Exception e) {
         //ignore, it will not be replicated
         return null;
      }
      Message message = new Message(null, from, buffer.getBuf(), buffer.getOffset(), buffer.getLength());
      if (oob) {
         message.setFlag(Message.Flag.OOB);
      }
      return message;
   }

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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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