@Override
public void open(Map conf, TopologyContext context, SpoutOutputCollector collector) {
initialized = false;
// Spout internals
this.collector = collector;
this.topologyContext = context;
maxRetries = kafkaSpoutConfig.getMaxTupleRetries();
numUncommittedOffsets = 0;
// Offset management
firstPollOffsetStrategy = kafkaSpoutConfig.getFirstPollOffsetStrategy();
consumerAutoCommitMode = kafkaSpoutConfig.isConsumerAutoCommitMode();
// Retries management
retryService = kafkaSpoutConfig.getRetryService();
// Tuples builder delegate
tuplesBuilder = kafkaSpoutConfig.getTuplesBuilder();
if (!consumerAutoCommitMode) { // If it is auto commit, no need to commit offsets manually
commitTimer =
new Timer(500, kafkaSpoutConfig.getOffsetsCommitPeriodMs(), TimeUnit.MILLISECONDS);
}
acked = new HashMap<>();
emitted = new HashSet<>();
waitingToEmit = Collections.emptyListIterator();
LOG.info("Kafka Spout opened with the following configuration: {}", kafkaSpoutConfig);
}
@Override
public Iterator<PlayerQueue.Entry> iterator() {
return Collections.emptyListIterator();
}