@Override
public void emit(int partitionId, EventWrapper eventWrapper) {
// Special handling required for Requests
if (eventWrapper.getEvent() instanceof Request) {
decorateRequest((Request) eventWrapper.getEvent());
}
try {
byte[] rawMessage = serDeser.serialize(eventWrapper);
MessageHolder mh = new MessageHolder(partitionId, rawMessage);
queueMessage(mh);
} catch (RuntimeException rte) {
if (monitor != null) {
monitor.increment(
low_level_emitter_out_err_ct.toString(),
1,
S4_EVENT_METRICS.toString(),
"et",
eventWrapper.getStreamName());
}
Logger.getLogger("s4")
.error("Error serializing or emitting event " + eventWrapper.getEvent(), rte);
throw rte;
}
}
public void queueMessage(MessageHolder messageHolder) {
messageQueue.add(messageHolder);
try {
if (monitor != null) {
monitor.set(
low_level_emitter_qsz.toString(), messageQueue.size(), S4_CORE_METRICS.toString());
}
} catch (Exception e) {
logger.error("Exception in monitor metrics on thread " + Thread.currentThread().getId(), e);
}
}
@Override
public void run() {
if (listener == null) {
if (listenerAppName == null) {
listenerAppName = appName;
}
sender = new SenderProcess(clusterManagerAddress, appName, listenerAppName);
Map<String, String> map = new HashMap<String, String>();
map.put("SenderId", "" + senderId);
sender.setSerializer(new PassThroughSerializer());
sender.acquireTaskAndCreateSender(map);
} else {
Object listenerConfig = null;
try {
listenerConfig = listener.getListenerConfig();
if (listenerConfig == null) {
logger.info("CommLayerEmitter going to wait for listener to acquire task");
synchronized (listener) {
listenerConfig = listener.getListenerConfig();
if (listenerConfig == null) {
listener.wait();
listenerConfig = listener.getListenerConfig();
}
}
}
} catch (Exception e) {
logger.info("Exception in CommLayerEmitter.run()", e);
}
logger.info("Creating sender process with " + listenerConfig);
String destinationAppName =
(listenerAppName != null ? listenerAppName : listener.getAppName());
sender =
new SenderProcess(
listener.getClusterManagerAddress(), listener.getAppName(), destinationAppName);
sender.setSerializer(new PassThroughSerializer());
sender.createSenderFromConfig(listenerConfig);
nodeCount = sender.getNumOfPartitions();
}
boolean isSent = false;
while (!Thread.interrupted()) {
isSent = false;
try {
MessageHolder mh = messageQueue.take();
byte[] rawMessage = mh.getRawMessage();
if (listener == null) {
isSent = sender.send(rawMessage);
} else {
isSent = sender.sendToPartition(mh.getPartitionId(), rawMessage);
}
if (isSent) {
if (monitor != null) {
monitor.increment(
low_level_emitter_msg_out_ct.toString(), 1, S4_CORE_METRICS.toString());
}
} else {
if (monitor != null) {
monitor.increment(
low_level_emitter_out_err_ct.toString(), 1, S4_CORE_METRICS.toString());
}
logger.warn("commlayer emit failed ...");
}
} catch (InterruptedException ie) {
if (monitor != null) {
monitor.increment(low_level_emitter_out_err_ct.toString(), 1, S4_CORE_METRICS.toString());
}
Thread.currentThread().interrupt();
} catch (Exception e) {
Logger.getLogger("s4").error("Error emitting message", e);
}
}
}