MemcachedStub.logger.trace (mssgPrefix + mcMessage.toString () + " key: " + key + " - request id: " + token.getMessageId () + " client id: " + token.getClientId ());
exp = addRequest.getExpTime ();
data = addRequest.getValue ().toByteArray ();
messageData = new eu.mosaic_cloud.platform.interop.common.kv.KeyValueMessage (key, data, addRequest.getEnvelope ().getContentEncoding (), addRequest.getEnvelope ().getContentType ());
callback = new DriverOperationFinishedHandler (token, session, MemcachedDriver.class, MemcachedResponseTransmitter.class);
resultStore = driver.invokeAddOperation (token.getClientId (), messageData, exp, callback);
callback.setDetails (KeyValueOperations.ADD, resultStore);
break;
case APPEND_REQUEST :
final MemcachedPayloads.AppendRequest appendRequest = (AppendRequest) message.payload;
token = appendRequest.getToken ();