Examples with AlreadyConnected org.omg.CosEventChannelAdmin.AlreadyConnected used on opensource projects

Example 1 with AlreadyConnected

use of org.omg.CosEventChannelAdmin.AlreadyConnected in project ACS by ACS-Community.

the class NCPublisher method init.

/**
	 * Initializes NCPublisher
	 * @param namingService Naming service
	 * @throws AcsJException
	 *             There are literally dozens of CORBA exceptions that could be
	 *             thrown by the NCPublisher class. Instead, these are
	 *             converted into an ACS Error System exception for the
	 *             developer's convenience.
	 */
protected synchronized void init(NamingContext namingService) throws AcsJException {
    helper = new Helper(channelName, channelNotifyServiceDomainName, this.services, namingService);
    isTraceEventsEnabled = helper.getChannelProperties().isTraceEventsEnabled(this.channelName);
    // get the channel
    // @TODO: handle Corba TIMEOUT 
    channel = helper.getNotificationChannel(getNotificationFactoryName());
    // Corba NC spec about adminId: a unique identifier assigned by the target EventChannel instance that is unique among all 
    // SupplierAdmin instances currently associated with the channel.
    // We are currently not using it, but it could be logged to help with NC debugging.
    IntHolder adminIdHolder = new IntHolder();
    org.omg.CosNotifyChannelAdmin.SupplierAdmin supplierAdminBase = null;
    try {
        supplierAdminBase = channel.new_for_suppliers(InterFilterGroupOperator.AND_OP, adminIdHolder);
    } catch (TIMEOUT ex) {
        // found in http://jira.alma.cl/browse/COMP-6312
        throw new AcsJCORBAProblemEx(ex);
    }
    if (supplierAdminBase == null) {
        AcsJCORBAReferenceNilEx ex = new AcsJCORBAReferenceNilEx();
        ex.setVariable("supplierAdminBase");
        ex.setContext("Null reference obtained for the supplier admin for channel " + this.channelName);
        throw ex;
    }
    try {
        supplierAdmin = gov.sandia.NotifyMonitoringExt.SupplierAdminHelper.narrow(supplierAdminBase);
    } catch (BAD_PARAM ex) {
        // This should never happen, since we already enforced the presence of TAO extensions in Helper#initializeNotifyFactory
        String specialSupplierAdminId = gov.sandia.NotifyMonitoringExt.SupplierAdminHelper.id();
        String standardSupplierAdminId = org.omg.CosNotifyChannelAdmin.SupplierAdminHelper.id();
        LOG_NC_TaoExtensionsSubtypeMissing.log(logger, channelName + "-SupplierAdmin", specialSupplierAdminId, standardSupplierAdminId);
        AcsJNarrowFailedEx ex2 = new AcsJNarrowFailedEx(ex);
        ex2.setNarrowType(specialSupplierAdminId);
        throw ex2;
    }
    int proxyCreationAttempts = 0;
    while (proxyConsumer == null) {
        String randomizedClientName = Helper.createRandomizedClientName(services.getName());
        // Holder for the unique ID assigned by the admin object. It is different from the name we set, and will be discarded.
        IntHolder proxyIdHolder = new IntHolder();
        proxyCreationAttempts++;
        try {
            // Create the consumer proxy (to which the published events will be fed) with a name.
            // The client type parameter selects a StructuredProxyPushConsumer (based on Structured Events),
            // as opposed to ProxyPushConsumer (based on Anys), or SequenceProxyPushConsumer (based on sequences of Structured Events).
            org.omg.CORBA.Object tempCorbaObj = supplierAdmin.obtain_named_notification_push_consumer(ClientType.STRUCTURED_EVENT, proxyIdHolder, randomizedClientName.toString());
            if (tempCorbaObj == null) {
                AcsJCORBAReferenceNilEx ex = new AcsJCORBAReferenceNilEx();
                ex.setVariable("tempCorbaObj");
                ex.setContext("Null reference obtained for the Proxy Push Consumer for publisher " + services.getName());
                // @TODO destroy supplierAdmin
                throw ex;
            }
            proxyConsumer = StructuredProxyPushConsumerHelper.narrow(tempCorbaObj);
            LOG_NC_ConsumerProxyCreation_OK.log(logger, proxyIdHolder.value, randomizedClientName, proxyCreationAttempts, services.getName(), channelName, getNotificationFactoryName());
        } catch (NameAlreadyUsed e) {
            // Hopefully we won't run into this situation. Still, try to go on in the loop,
            // with a different client name next time.
            logger.fine("Consumer proxy name '" + randomizedClientName + "' already in use. Will try again with different random number appended.");
        } catch (NameMapError ex) {
            // Default to the unnamed version
            try {
                proxyConsumer = StructuredProxyPushConsumerHelper.narrow(supplierAdmin.obtain_notification_push_consumer(ClientType.STRUCTURED_EVENT, proxyIdHolder));
                LOG_NC_ConsumerProxyCreation_OK.log(logger, proxyIdHolder.value, "-unknown-", proxyCreationAttempts, services.getName(), channelName, getNotificationFactoryName());
            } catch (AdminLimitExceeded ex2) {
                LOG_NC_ConsumerProxyCreation_FAIL.log(logger, services.getName(), channelName, getNotificationFactoryName(), ex2.getMessage());
                // @TODO destroy supplierAdmin
                throw new AcsJCORBAProblemEx(ex2);
            }
        } catch (AdminLimitExceeded e) {
            LOG_NC_ConsumerProxyCreation_FAIL.log(logger, services.getName(), channelName, getNotificationFactoryName(), e.getMessage());
            // @TODO destroy supplierAdmin
            throw new AcsJCORBAProblemEx(e);
        }
    }
    // Avoid future calls from the NC to #subscription_change(EventType[], EventType[]). See Corba spec 3.4.1.3
    // @TODO: If we use ALL_NOW_UPDATES_ON then we could actually suppress sending of event types that no consumer wants to get. 
    proxyConsumer.obtain_subscription_types(ObtainInfoMode.NONE_NOW_UPDATES_OFF);
    // see 3.4.4.1 of Notification Service, v1.1
    try {
        StructuredPushSupplier thisSps = StructuredPushSupplierHelper.narrow(this.services.activateOffShoot(this));
        proxyConsumer.connect_structured_push_supplier(thisSps);
    } catch (AcsJContainerServicesEx e) {
        // @TODO destroy supplierAdmin and proxyConsumer
        throw new AcsJCORBAProblemEx(e);
    } catch (AlreadyConnected e) {
        // @TODO destroy supplierAdmin and proxyConsumer
        throw new AcsJCORBAProblemEx(e);
    }
    reconnectCallback = new AcsNcReconnectionCallback(this, logger);
    reconnectCallback.registerForReconnect(services, helper.getNotifyFactory());
}