Examples of fr.dyade.aaa.agent.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

   * <p>
   * This request is acknowledged when destinated to a queue.
   */
  private void doReact(ConsumerDenyRequest req) {
    if (req.getQueueMode()) {
      AgentId qId = AgentId.fromString(req.getTarget());
      String id = req.getId();
      sendNot(qId, new DenyRequest(activeCtxId, req.getRequestId(), id));


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

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   * This method sends a <code>fr.dyade.aaa.agent.DeleteNot</code> to the
   * destination and acknowledges the request.
   */
  private void doReact(TempDestDeleteRequest req) {
    // Removing the destination from the context's list:
    AgentId tempId = AgentId.fromString(req.getTarget());
    activeCtx.removeTemporaryDestination(tempId);


    // Sending the request to the destination:
    deleteTemporaryDestination(tempId);

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   */
  private void doReact(XACnxRollback req) {
    Xid xid = new Xid(req.getBQ(), req.getFI(), req.getGTI());


    String queueName;
    AgentId qId;
    Vector ids;
    for (Enumeration queues = req.getQueues(); queues.hasMoreElements();) {
      queueName = (String) queues.nextElement();
      qId = AgentId.fromString(queueName);
      ids = req.getQueueIds(queueName);

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  /**
   * Gets the identifier of the default administration topic on a given server.
   */
  public static AgentId getDefault(short serverId) {
    return new AgentId(serverId, serverId, AgentId.JoramAdminStamp);
  }

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   * Gets the identifier of the default administration topic on the
   * current server.
   */
  public final static AgentId getDefault() {
    if (adminId == null)
      adminId = new AgentId(AgentServer.getServerId(), AgentServer.getServerId(), AgentId.JoramAdminStamp);
    return adminId;
  }

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   * @see org.objectweb.joram.mom.proxies.ConnectionManager
   */
  private AgentId getProxyId(Identity identity,
                            String inaddr) throws Exception {


    AgentId userProxId = null;
    Identity userIdentity = (Identity) usersTable.get(identity.getUserName());
    if (userIdentity == null) {
      if (logger.isLoggable(BasicLevel.ERROR))
        logger.log(BasicLevel.ERROR, "User [" + identity.getUserName() + "] does not exist");
      throw new Exception("User [" + identity.getUserName() + "] does not exist");

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   */  
  private void handleAdminReply(AdminReplyNot not) {
    String requestId = not.getRequestId();
    if (requestId == null) return;


    AgentId replyTo = (AgentId) requestsTable.remove(requestId);
    if (replyTo == null) return;


    AdminReply reply;


    if (not instanceof GetRightsReplyNot)

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    distributeReply(replyTo, requestId, reply);
  }


  private void handleGetProxyIdNot(GetProxyIdNot not) {
    try {
      AgentId proxyId = getProxyId(not.getIdentity(), not.getInAddr());
      not.Return(proxyId);
    } catch (Exception exc) {
      not.Throw(exc);
    }
  }

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  private void handleGetProxyIdListNot(GetProxyIdListNot not) {
    List idList = new ArrayList();
    Iterator ids = proxiesTable.values().iterator();
    while (ids.hasNext()) {
      AgentId aid = (AgentId) ids.next();
      idList.add(aid);
    }
    AgentId[] res = (AgentId[]) idList.toArray(new AgentId[idList.size()]);
    not.Return(res);
  }

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  private AdminReply doProcess(GetRightsReplyNot not) {
    Vector readers = not.getReaders();
    Vector writers = not.getWriters();


    String name;
    AgentId proxyId;
    GetRightsReply reply = new GetRightsReply(not.getSuccess(), not.getInfo(), not.isFreeReading(), not.isFreeWriting());


    for (Iterator names = proxiesTable.keySet().iterator(); names.hasNext();) {
      name = (String) names.next();
      proxyId = (AgentId) proxiesTable.get(name);


      if (readers.contains(proxyId))
        reply.addReader(name, proxyId.toString());
      if (writers.contains(proxyId))
        reply.addWriter(name, proxyId.toString());
    }
    return reply;
  }

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Related Classes of fr.dyade.aaa.agent.AgentId

fr.dyade.aaa.jndi2.distributed.DistributedJndiServer

fr.dyade.aaa.jndi2.distributed.ReplicationManager

fr.dyade.aaa.jndi2.ha.HAJndiServer

fr.dyade.aaa.jndi2.server.JndiServer

fr.dyade.aaa.jndi2.server.RequestManager

org.objectweb.joram.mom.dest.AdminTopic

org.objectweb.joram.mom.dest.ClusterQueue

org.objectweb.joram.mom.dest.Destination

org.objectweb.joram.mom.dest.LoadingFactor

org.objectweb.joram.mom.dest.Queue

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