Examples of AgentId

fr.dyade.aaa.agent.AgentId
An AgentId allows for uniquely identifying and localizing an agent throughout the distributed system. It defines variable members describing the identifier and all needed function members to manipulate the structure (creation, serialization, etc).
However before describing the structure of an AgentId we must take into account a second requirement: an agent may be created onto a remote agent server, and the creating entity needs to know the new identifier created for that agent. As agents live in an asynchronous world it is not so easy to get back the identifier from the remote server. We decided instead to make the creating entity responsible for creating the identifier.
The two requirements are then:
- static localization of agents to allow the system to forward notifications ;
- local generation of identifiers for remote agents.
The AgentId is then built of three parts:
- the identification of the agent server hosting the creating agent (from field),
- the identification of the agent server hosting the created agent (to field),
- a stamp, local to the agent server hosting the creating agent (stamp field) ; see AgentIdStamp class.
The three fields form the unique global identifier of the agent, that is two agents may share a common stamp, as long as their from or to fields differ. The to field identifies the agent server hosting the agent, so it is used by the channel to forward notifications to the agent.
@see AgentIdStamp
net.fortytwo.rdfagents.model.AgentId

Examples of fr.dyade.aaa.agent.AgentId

   * a <code>BrowseRequest</code> MOM request directly to a destination.
   * 
   * @throws RequestException Undefined (null) destination
   */
  private void reactToClientRequest(int key, QBrowseRequest req) throws RequestException {
    AgentId destId = AgentId.fromString(req.getTarget());
    if (destId == null)
      throw new RequestException("Request to an undefined destination (null).");
    
    sendNot(destId, new BrowseRequest(key, req.getRequestId(), req.getSelector()));
  }

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Examples of fr.dyade.aaa.agent.AgentId

   * action's purpose is to preserve causality.
   *
   * @exception RequestException  If the destination could not be deployed.
   */
  private void doReact(SessCreateDestRequest req) throws RequestException {
    AgentId destId = null;


    // Verify if the destination exists
    DestinationDesc desc = AdminTopic.lookupDest(req.getName(), req.getType());
    if (desc == null) {
      Destination dest = null;
      if (DestinationConstants.isQueue(req.getType())) {
        // Create a local queue.
        dest = new Queue();
      } else if (DestinationConstants.isTopic(req.getType())) {
        // Create a local topic.
        dest = new Topic();
      } else {
        throw new RequestException("Could not create destination, unknown type:" + req.getType());
      }
      dest.setName(req.getName());
      dest.setAdminId(getId());
      dest.setFreeWriting(true); // Setting free WRITE right on the destination
      if (! DestinationConstants.isTemporary(req.getType()))
        dest.setFreeReading(true); // Setting free READ right on the destination
      destId = dest.getId();
      try {
        dest.deploy();
      } catch (IOException exc) {
        throw new RequestException("Could not create destination:" + exc.getMessage());
      }
      // Registers the newly created destination
      AdminTopic.registerDest(destId, (req.getName() == null) ? destId.toString() : req.getName(),
          req.getType());


      if (DestinationConstants.isTemporary(req.getType())) {
        // Registers the temporary destination in order to clean it at the end of the connection
        activeCtx.addTemporaryDestination(destId);
      }


      if (logger.isLoggable(BasicLevel.DEBUG))
        logger.log(BasicLevel.DEBUG, "UserAgent, new destination created: " + destId);
    } else {
      destId = desc.getId();
    }


    SessCreateDestReply reply = new SessCreateDestReply(req, destId.toString());
    sendNot(getId(), new SyncReply(activeCtxId, reply));
  }

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Examples of fr.dyade.aaa.agent.AgentId

    if (nbMsgGive < 1) return;


    // select queue in cluster who have a rateOfFlow > 1
    List selected = new ArrayList();
    for (Iterator e = clusters.keySet().iterator(); e.hasNext();) {
      AgentId id = (AgentId) e.next();
      if (((Float) clusters.get(id)).floatValue() >= 1 && !id.equals(clusterQueue.getId()))
        selected.add(id);
    }


    if (selected.size() == 0) return;


    int nbGivePerQueue = nbMsgGive / selected.size();
    LBMessageGive msgGive = new LBMessageGive(validityPeriod, rateOfFlow);


    if (nbGivePerQueue == 0 && nbMsgGive > 0) {
      // send all to the first element of clusterQueue.
      AgentId id = (AgentId) selected.get(0);
      if (logger.isLoggable(BasicLevel.DEBUG))
        logger.log(BasicLevel.DEBUG, 
                   "LoadingFactor.processGive" +
                   " nbMsgGive = " + nbMsgGive +
                   ", id = " + id);
      msgGive.setClientMessages(clusterQueue.getClientMessages(nbMsgGive, null, true));
      clusterQueue.forward(id, msgGive);
    } else {
      // dispatch to cluster.
      if (logger.isLoggable(BasicLevel.DEBUG))
        logger.log(BasicLevel.DEBUG, 
                   "LoadingFactor.processGive" +
                   " givePerQueue = " + nbGivePerQueue +
                   ", selected = " + selected);
      for (Iterator e = selected.iterator(); e.hasNext();) {
        AgentId id = (AgentId) e.next();
        msgGive.setClientMessages(clusterQueue.getClientMessages(nbGivePerQueue, null, true));
        clusterQueue.forward(id, msgGive);
      }
    }
  }

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Examples of fr.dyade.aaa.agent.AgentId

                 " nbMsgHope = " + nbMsgHope);
    if (nbMsgHope < 1) return;


    List selected = new ArrayList();
    for (Iterator e = clusters.keySet().iterator(); e.hasNext();) {
      AgentId id = (AgentId) e.next();
      if (((Float) clusters.get(id)).floatValue() <= 1 && !id.equals(clusterQueue.getId()))
        selected.add(id);
    }


    if (selected.size() == 0) return;


    int nbHopePerQueue = nbMsgHope / selected.size();
    if (nbHopePerQueue == 0 && nbMsgHope > 0) {
      // send the hope request to the first element of clusterQueue.
      AgentId id = (AgentId) selected.get(0);


      if (logger.isLoggable(BasicLevel.DEBUG))
        logger.log(BasicLevel.DEBUG, 
                   "LoadingFactor.processHope" +
                   " nbMsgHope = " + nbMsgHope +
                   ", id = " + id);
      LBMessageHope msgHope = new LBMessageHope(validityPeriod,rateOfFlow);
      msgHope.setNbMsg(nbMsgHope);
      clusterQueue.forward(id, msgHope);


    } else {
      // dispatch the hope request to clusterQueue.
      if (logger.isLoggable(BasicLevel.DEBUG))
        logger.log(BasicLevel.DEBUG, 
                   "LoadingFactor.processHope" +
                   " hopePerQueue = " + nbHopePerQueue +
                   ", selected = " + selected);


      LBMessageHope msgHope = new LBMessageHope(validityPeriod,rateOfFlow);
      for (Iterator e = selected.iterator(); e.hasNext();) {
        AgentId id = (AgentId) e.next();
        msgHope.setNbMsg(nbHopePerQueue);
        clusterQueue.forward(id, msgHope);
      }
    }
  }

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Examples of fr.dyade.aaa.agent.AgentId

   *
   * @exception StateException    If activating an already active durable subscription.
   * @exception RequestException  If the subscription parameters are not correct.
   */
  private void doReact(ConsumerSubRequest req) throws StateException, RequestException {
    AgentId topicId = AgentId.fromString(req.getTarget());
    String subName = req.getSubName();
    
    if (topicId == null)
      throw new RequestException("Cannot subscribe to an undefined topic (null).");
    
    if (subName == null)
      throw new RequestException("Unauthorized null subscription name.");
    
    boolean newTopic = ! topicsTable.containsKey(topicId);
    boolean newSub = ! subsTable.containsKey(subName);


    TopicSubscription tSub;
    ClientSubscription cSub;


    // true if a SubscribeRequest has been sent to the topic. 
    boolean sent = false;


    if (newTopic) { // New topic...
      tSub = new TopicSubscription();
      topicsTable.put(topicId, tSub);
    } else { // Known topic...
      tSub = (TopicSubscription) topicsTable.get(topicId);
    }


    if (newSub) { // New subscription...
      // state change, so save.
      setSave();
      cSub = new ClientSubscription(getId(),
                                    activeCtxId,
                                    req.getRequestId(),
                                    req.getDurable(),
                                    topicId,
                                    req.getSubName(),
                                    req.getSelector(),
                                    req.getNoLocal(),
                                    dmqId,
                                    threshold,
                                    nbMaxMsg,
                                    messagesTable);
      cSub.setProxyAgent(this);
     
      if (logger.isLoggable(BasicLevel.DEBUG))
        logger.log(BasicLevel.DEBUG, "Subscription " + subName + " created.");


      subsTable.put(subName, cSub);
      try {
        MXWrapper.registerMBean(cSub, getSubMBeanName(subName));
      } catch (Exception e) {
        if (logger.isLoggable(BasicLevel.WARN))
          logger.log(BasicLevel.WARN, "  - Could not register ClientSubscriptionMbean", e);
      }
      tSub.putSubscription(subName, req.getSelector());
      sent = updateSubscriptionToTopic(topicId, activeCtxId, req.getRequestId(), req.isAsyncSubscription());
    } else { // Existing durable subscription...
      cSub = (ClientSubscription) subsTable.get(subName);


      if (cSub.getActive())
        throw new StateException("The durable subscription " + subName + " has already been activated.");


      // Updated topic: updating the subscription to the previous topic.
      boolean updatedTopic = ! topicId.equals(cSub.getTopicId());
      if (updatedTopic) {
        TopicSubscription oldTSub =
          (TopicSubscription) topicsTable.get(cSub.getTopicId());
        oldTSub.removeSubscription(subName);
        updateSubscriptionToTopic(cSub.getTopicId(), -1, -1, req.isAsyncSubscription());

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Examples of fr.dyade.aaa.agent.AgentId

   */
  private void doReact(ConsumerUnsetListRequest req) throws DestinationException {
    // If the listener was listening to a queue, cancelling any pending reply:
    if (req.getQueueMode()) {
      activeCtx.cancelReceive(req.getCancelledRequestId());
      AgentId to = AgentId.fromString(req.getTarget());
      sendNot(to,
          new AbortReceiveRequest(activeCtx.getId(), req.getRequestId(), req.getCancelledRequestId()));
    }
  }

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Examples of fr.dyade.aaa.agent.AgentId


    if (logger.isLoggable(BasicLevel.DEBUG))
      logger.log(BasicLevel.DEBUG, "Deleting subscription " + subName);


    // Updating the proxy's subscription to the topic.
    AgentId topicId = sub.getTopicId();
    TopicSubscription tSub = (TopicSubscription) topicsTable.get(topicId);
    tSub.removeSubscription(subName);
    updateSubscriptionToTopic(topicId, -1, -1);


    // Deleting the subscription.

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Examples of fr.dyade.aaa.agent.AgentId

   * <code>SessAckRequest</code> acknowledging messages either on a queue
   * or on a subscription.
   */
  private void doReact(SessAckRequest req) {
    if (req.getQueueMode()) {
      AgentId qId = AgentId.fromString(req.getTarget());
      Vector ids = req.getIds();


      AcknowledgeRequest not = new AcknowledgeRequest(activeCtxId, req.getRequestId(), ids);
      if (qId.getTo() == getId().getTo()) {
        if (logger.isLoggable(BasicLevel.DEBUG))
          logger.log(BasicLevel.DEBUG, " -> local acking");
        not.setPersistent(false);
      }

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Examples of fr.dyade.aaa.agent.AgentId

   * <code>SessDenyRequest</code> denying messages either on a queue or on
   * a subscription.
   */
  private void doReact(SessDenyRequest req) {
    if (req.getQueueMode()) {
      AgentId qId = AgentId.fromString(req.getTarget());
      Vector ids = req.getIds();
      sendNot(qId, new DenyRequest(activeCtxId, req.getRequestId(), ids));


      // Acknowledging the request unless forbidden:
      if (!req.getDoNotAck())

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Examples of fr.dyade.aaa.agent.AgentId

   * <code>ConsumerAckRequest</code> acknowledging a message either on a queue
   * or on a subscription.
   */
  private void doReact(ConsumerAckRequest req) {
    if (req.getQueueMode()) {
      AgentId qId = AgentId.fromString(req.getTarget());
      AcknowledgeRequest not = new AcknowledgeRequest(activeCtxId, req.getRequestId(), req.getIds());
      if (qId.getTo() == getId().getTo()) {
        if (logger.isLoggable(BasicLevel.DEBUG))
          logger.log(BasicLevel.DEBUG, " -> local acking");
        not.setPersistent(false);
        sendNot(qId, not);
      } else {

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