@Override
public void execute(List<Tuple> tuples, OutputCollector collector) throws OperatorException {
// First tuple used to initialize datastructures and derive data types
if (!initialized) {
if (!config.isCounterBolt()) {
dao.setConfig(config);
dao.init();
dao.analyzeTuple(tuples.get(0));
dao.createDataStructures();
dao.prepare();
} else {
keyFields = new Fields(config.getPrimaryKeys().getPrimaryKeyFields());
ctn.connect(config.getIP());
ctn.createDataStructures();
}
initialized = true;
}
try {
if (!config.isCounterBolt()) {
for (Tuple t : tuples) {
this.getUDFBolt().log_debug("cassandra-operator", "store " + t);
}
synchronized (this) {
dao.store(tuples);
}
} else {
for (Tuple t : tuples) {
List<Object> keyValues = t.select(keyFields);
List<Object> val = t.select(config.getTupleFields());
this.getUDFBolt().log_debug("cassandra-operator", "store " + t);
synchronized (this) {
ctn.update(keyValues, (Long) val.get(0));
}
} // for
}
} catch (Exception e) {
this.getUDFBolt().log_error("Storing of tuples into Cassandra DB failed!", e);
e.printStackTrace();
throw new OperatorException("Storing of tuples into Cassandra DB failed!");
}
// emit tuples
for (Tuple p : tuples) {
collector.emit(p.getValues());
}
}
