Examples of EventBroker

org.wso2.carbon.event.core.EventBroker
the main eventing interface for the other components. this interface supports two kinds of subscriptions. 1. subscritions with EventDispatcher Event broker does not persists these subscriptions and call the on message method upon receiving an event. 2. subscriptions with EventDispatcherName Event broker persists these subscriptions. It is responsibility of the user who calls this method to register the eventDispatcher with the given name. In a server restart again caller has to register the Event dispatcher.

Examples of org.wso2.carbon.event.core.EventBroker

        if (topicValue == null) {
            handleException("Topic for the event cannot be found", synCtx);
        } else {
            org.apache.axis2.context.MessageContext mc =
                    ((Axis2MessageContext)synCtx).getAxis2MessageContext();
            EventBroker broker = (EventBroker) mc.getConfigurationContext().
                    getProperty("mediation.event.broker");
            if (broker == null) {
                handleException("EventBroker cannot be found", synCtx);
            } else {
                Message message = new Message();
                if (expression == null) {
                    message.setMessage(synCtx.getEnvelope().getBody().getFirstElement());
                } else {
                    try {
                        Object o = expression.selectSingleNode(synCtx);
                        if (o instanceof OMElement)  {
                            message.setMessage((OMElement)o);
                        } else {
                            handleException("The result of the expression:" +
                                    expression + " should be an OMElement", synCtx);
                        }
                    } catch (JaxenException e) {
                        handleException("Error evaluating the expression: " +
                                expression, synCtx);
                    }
                }


                int tenantID = SuperTenantCarbonContext.getCurrentContext(
                        mc.getConfigurationContext()).getTenantId();
                try {
                    SuperTenantCarbonContext.startTenantFlow();
                    SuperTenantCarbonContext.getCurrentContext().setTenantId(tenantID);
                    SuperTenantCarbonContext.getCurrentContext().getTenantDomain(true);
                    broker.publish(message, topicValue);
                } catch (EventBrokerException e) {
                    handleException("Error publishing the event to the broker", e, synCtx);
                } catch (Exception e) {
                    log.error("Error in setting tenant information", e);
                } finally {

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Examples of org.wso2.carbon.event.core.EventBroker

    public void cleanup() throws DataServiceFault {
        if (log.isDebugEnabled()) {
            log.debug("Data Service '" + this.getName() + "' cleanup start..");
        }
        /* remove event subscriptions */
        EventBroker eventBroker =
                DataServicesDSComponent.getEventBroker();
        if (eventBroker != null) {
            this.clearDataServicesEventSubscriptions(eventBroker);
        }
        /* cleanup configs */

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Examples of org.wso2.carbon.event.core.EventBroker

    public void publish(String topicName,
                        OMElement message,
                        BrokerConfiguration brokerConfiguration)
            throws BrokerEventProcessingException {


        EventBroker eventBroker = BrokerServiceValueHolder.getEventBroker();
        Message eventMessage = new Message();
        eventMessage.setMessage(message);
        try {
            eventBroker.publishRobust(eventMessage, topicName);
        } catch (EventBrokerException e) {
            throw new BrokerEventProcessingException("Can not publish the to local broker ", e);
        }
    }

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Examples of org.wso2.carbon.event.core.EventBroker

     * @param topic     Topic
     * @throws DataServiceFault DataServiceFault
     */
    private void sendMessageToTopic(OMElement omMessage, String topic) throws DataServiceFault {
        try {
            EventBroker eventBroker = DataServicesDSComponent.getEventBroker();
            if (eventBroker == null) {
              throw new DataServiceFault("Event broker instance is not available");
            }
            Message message = new Message();
            message.setMessage(omMessage);
            eventBroker.publish(message, topic);
        } catch (Exception e) {
          throw new DataServiceFault(e, "Error in publishing event for topic: " +
                    topic + " message:-\n" + omMessage);
        }
    }

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Examples of org.wso2.carbon.event.core.EventBroker

    }


    public static void registerEventBrokerServiceListener(
            EventBrokerServiceListener listener) {
        synchronized (dsComponentLock) {
            EventBroker eventBroker = getEventBroker();
            if (eventBroker == null) {
                eventBrokerServiceListeners.add(listener);
            } else {
                listener.setEventBroker(eventBroker);
            }

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Examples of org.wso2.carbon.event.core.EventBroker


        //Add static subscription only if bam url is set
        if (serverURL != null) {
            String serviceURL = serverURL + UsageAgentConstants.BAM_SERVER_STAT_SERVICE;


            EventBroker eventBrokerService = getEventBrokerService();
            Subscription subscription = new Subscription();
            // set the subscription end point to the service url
            subscription.setEventSinkURL(serviceURL);
            subscription.setTopicName(UsageAgentConstants.BAM_SERVER_STAT_FILTER);
            subscription.setOwner(CarbonConstants.REGISTRY_SYSTEM_USERNAME);
            subscription.setEventDispatcherName(EventBrokerConstants.WS_EVENT_DISPATCHER_NAME);


            try {
                eventBrokerService.subscribe(subscription);
            } catch (EventBrokerException e) {
                String msg = "Cannot subscribe to the event broker ";
                log.error(msg);
                throw e;
            }

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Examples of org.wso2.carbon.event.core.EventBroker

import java.util.Calendar;


public class TopicManagerAdminService {


    public TopicNode getAllTopics() throws EventAdminException {
        EventBroker eventBroker = EventAdminHolder.getInstance().getEventBroker();
        try {
            return eventBroker.getTopicManager().getTopicTree();
        } catch (EventBrokerException e) {
            throw new EventAdminException("Error in accessing topic manager ", e);
        }
    }

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Examples of org.wso2.carbon.event.core.EventBroker

            throw new EventAdminException("Error in accessing topic manager ", e);
        }
    }


    public TopicRolePermission[] getTopicRolePermissions(String topic) throws EventAdminException {
        EventBroker eventBroker = EventAdminHolder.getInstance().getEventBroker();
        try {
            return eventBroker.getTopicManager().getTopicRolePermission(topic);
        } catch (EventBrokerException e) {
            throw new EventAdminException("Error in accessing topic manager", e);
        }
    }

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Examples of org.wso2.carbon.event.core.EventBroker

            throw new EventAdminException("Error in accessing topic manager", e);
        }
    }


    public void addTopic(String topic) throws EventAdminException {
        EventBroker eventBroker = EventAdminHolder.getInstance().getEventBroker();
        try {
            eventBroker.getTopicManager().addTopic(topic);
        } catch (EventBrokerException e) {
            throw new EventAdminException(e.getMessage());
        }
    }

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Examples of org.wso2.carbon.event.core.EventBroker

        }
    }


    public void updatePermission(String topic, TopicRolePermission[] topicRolePermissions)
            throws EventAdminException {
        EventBroker eventBroker = EventAdminHolder.getInstance().getEventBroker();
        try {
            eventBroker.getTopicManager().updatePermissions(topic, topicRolePermissions);
        } catch (EventBrokerException e) {
            throw new EventAdminException("Error: " + e.getMessage());
        }
    }

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