Exemple #1
0
  @Override
  public void onDeliverRequest(PublishRequest req) {
    try {
      //        // TODO remove 4 lines below - just for debug
      //        byte[] details = req.getMessage();
      //        if (req.getEventType() == 1413) {
      //            System.out.println("zzz");
      //        }
      JCsyncAbstractOperation op = JCsyncAbstractOperation.encode(req.getMessage());
      op.setReqestID(req.getTransactionID());

      log.trace(
          this.pubsubLayer.getNodeInfo().getName()
              + " (onDeliverRequest) - [publisher]:"
              + req.getPublisher()
              + ", [node relay]:"
              + req.getSourceInfo()
              + ": "
              + op);
      if (this.checkIfAlreadyReceived(req)) {
        log.trace(
            this.pubsubLayer.getNodeInfo().getName()
                + " (onDeliverRequest): - received request that was aready received, skipping ... : "
                + op);
        return;
      }
      // check that this node can hold this request
      JCSyncAbstractSharedObject so = this.sharedObjects.get(op.getObjectID());
      if (so != null) {
        if ((op.getOperationType() & OP_REQ_GENERIC) == OP_REQ_GENERIC) {
          if (op.getOperationType() == OP_REQ_TRANSFER_OBJECT) {
            // there is no need to inform consistency manager about this kind of request, just send
            // response and indication
            sendResponse(req, PubSubConstants.RESP_SUCCESS);
            synchronized (so.operationIdIncrementLocker) {
              log.trace(
                  getNodeInfo().getName()
                      + ": transferring shared object with current operation id: "
                      + so.getCurrentOperationID()
                      + ", to node: "
                      + req.getPublisher());
              JCsyncAbstractOperation op_ =
                  JCsyncAbstractOperation.get_OP_IND_TRANSFER_OBJECT(
                      op.getObjectID(), so.encode(), req.getPublisher());
              op_.setReqestID(op.getReqestID());
              sendMessage(req, op_, false);
            }

          } else {
            // if this node is a root
            if (getAssignedTopic(req.getTopicID())
                .isTopicRoot(this.pubsubLayer.getNodeInfo().getID())) {
              AbstractConsistencyManager acm = getConsistencyManager(req.getTopicID());
              if (acm != null) {
                log.trace(
                    "(onDeliverRequest) - passing operation to consistency model: "
                        + op.toString());
                acm.requestReceived(req, op);
              } else {
                log.fatal(
                    "(onDeliverRequest) - there is no registered consistency manager for this operation: "
                        + op.toString());
              }
            } else {
              log.trace(
                  "(onDeliverRequest) - forwarding operation request to the parent node: "
                      + op.toString());
              this.pubsubLayer.forwardToParent(req, getAssignedTopic(req.getTopicID()));
            }
          }
        } else {
          log.fatal("(onDeliverRequest) - unhandled operation type: " + op.toString());
        }
      } else {
        if (op.getOperationType() == OP_REQ_TRANSFER_OBJECT) {
          log.trace(
              getNodeInfo().getName()
                  + ": (onDeliverRequest) - shared object not found!: "
                  + op.toString()
                  + ", forwarding request to the topic owner: "
                  + op.toString());
          this.pubsubLayer.forwardToOtherNode(
              req, this.pubsubLayer.getTopic(op.getObjectID()).getOwner().getNodeInfo());
        } else {
          log.fatal(
              getNodeInfo().getName()
                  + ": (onDeliverRequest) - shared object not found!: "
                  + op.toString());
          sendResponse(req, PubSubConstants.RESP_DOESNOTEXIST);
        }
      }
    } catch (Exception e) {
      log.error("An error occurred:", e);
    }
  }
Exemple #2
0
 /**
  * Called to inform the algorithm about the fact that new object is created. Typically used by
  * {@link JCSyncAbstractSharedObject JCsyncAbstractSharedObject}. at the end of the process of
  * creating new object
  *
  * @param so the object that was already created
  * @see JCSyncAbstractSharedObject
  */
 @Override
 public void objectCtreated(JCSyncAbstractSharedObject so) {
   log.info(this.pubsubLayer.getNodeInfo().getName() + " - object successfully created: " + so);
   this.sharedObjects.put(so.getID(), so);
 }