@Override
public void publish(Object[] payload) {
if (!isEnabled()) {
throw new RuntimeException("Statistics publisher is not enabled");
}
Event event = new Event();
event.setPayloadData(payload);
event.setArbitraryDataMap(new HashMap<String, String>());
try {
if (log.isDebugEnabled()) {
log.debug(
String.format(
"Publishing cep event: [stream] %s [version] %s",
streamDefinition.getName(), streamDefinition.getVersion()));
}
asyncDataPublisher.publish(streamDefinition.getName(), streamDefinition.getVersion(), event);
} catch (AgentException e) {
if (log.isErrorEnabled()) {
log.error(
String.format(
"Could not publish cep event: [stream] %s [version] %s",
streamDefinition.getName(), streamDefinition.getVersion()),
e);
}
}
}
private void init() {
AgentConfiguration agentConfiguration = new AgentConfiguration();
Agent agent = new Agent(agentConfiguration);
// Initialize asynchronous data publisher
asyncDataPublisher =
new AsyncDataPublisher("tcp://" + ip + ":" + port + "", username, password, agent);
asyncDataPublisher.addStreamDefinition(streamDefinition);
}
/**
* @param topicName - topic name to publish messages
* @param message - is and Object[]{Event, EventDefinition}
* @param brokerConfiguration - broker configuration to be used
* @throws BrokerEventProcessingException
*/
public void publish(String topicName, Object message, BrokerConfiguration brokerConfiguration)
throws BrokerEventProcessingException {
Integer tenantId = CarbonContext.getCurrentContext().getTenantId();
ConcurrentHashMap<BrokerConfiguration, AsyncDataPublisher> dataPublishers =
dataPublisherMap.get(tenantId);
if (dataPublishers == null) {
dataPublishers = new ConcurrentHashMap<BrokerConfiguration, AsyncDataPublisher>();
dataPublisherMap.putIfAbsent(tenantId, dataPublishers);
dataPublishers = dataPublisherMap.get(tenantId);
}
AsyncDataPublisher dataPublisher = dataPublishers.get(brokerConfiguration);
if (dataPublisher == null) {
synchronized (this) {
dataPublisher = dataPublishers.get(brokerConfiguration);
if (dataPublisher == null) {
dataPublisher = createDataPublisher(brokerConfiguration);
dataPublishers.putIfAbsent(brokerConfiguration, dataPublisher);
}
}
}
try {
Event event = (Event) ((Object[]) message)[0];
StreamDefinition streamDefinition = (StreamDefinition) ((Object[]) message)[1];
// String streamId = outputStreamIdMap.get(topicName + tenantId);
if (!dataPublisher.isStreamDefinitionAdded(streamDefinition)) {
dataPublisher.addStreamDefinition(streamDefinition);
// Sending the first Event
publishEvent(brokerConfiguration, dataPublisher, event, streamDefinition);
} else {
// Sending Events
publishEvent(brokerConfiguration, dataPublisher, event, streamDefinition);
}
} catch (Exception ex) {
throw new BrokerEventProcessingException(
ex.getMessage() + " Error Occurred When Publishing Events", ex);
}
}
private void publishEvent(
BrokerConfiguration brokerConfiguration,
AsyncDataPublisher dataPublisher,
Event event,
StreamDefinition streamDefinition)
throws BrokerEventProcessingException {
try {
dataPublisher.publish(streamDefinition.getName(), streamDefinition.getVersion(), event);
} catch (AgentException ex) {
throw new BrokerEventProcessingException(
"Cannot publish data via DataPublisher for the broker configuration:"
+ brokerConfiguration.getName()
+ " for the event "
+ event,
ex);
}
}
