Examples with TransactionAttempt org.apache.storm.trident.topology.TransactionAttempt used on opensource projects

Example 11 with TransactionAttempt

use of org.apache.storm.trident.topology.TransactionAttempt in project storm by apache.

the class TridentSpoutCoordinator method execute.

@Override
public void execute(Tuple tuple, BasicOutputCollector collector) {
    TransactionAttempt attempt = (TransactionAttempt) tuple.getValue(0);
    if (tuple.getSourceStreamId().equals(MasterBatchCoordinator.SUCCESS_STREAM_ID)) {
        state.cleanupBefore(attempt.getTransactionId());
        coord.success(attempt.getTransactionId());
    } else {
        long txid = attempt.getTransactionId();
        Object prevMeta = state.getPreviousState(txid);
        Object meta = coord.initializeTransaction(txid, prevMeta, state.getState(txid));
        state.overrideState(txid, meta);
        collector.emit(MasterBatchCoordinator.BATCH_STREAM_ID, new Values(attempt, meta));
    }
}