hi,
In the below code, my outmsg from the result, in one case, i need to flat
it to multiple output messages, i am stuck as where/how can i do it, really
appreciate if someone can help.
Thanks
Shannon
Source<Pair<TopicPartition, Source<CommittableMessage<SpecificRecord,
SpecificRecord>, NotUsed>>, Control> s
= Consumer.committablePartitionedSource(consumerSettings,
Subscriptions.topics("akkatest"));
s.mapAsyncUnordered(3, new
Function<Pair<TopicPartition,Source<CommittableMessage<SpecificRecord,SpecificRecord>,NotUsed>>,
CompletionStage<Done>>() {
public CompletionStage<Done> apply(
Pair<TopicPartition,
Source<ConsumerMessage.CommittableMessage<SpecificRecord, SpecificRecord>,
NotUsed>> param)
throws Exception {
logger.debug("----------------part -----------------" +
param.first().partition());
Source<Message<SpecificRecord, SpecificRecord, Committable>, NotUsed> f
=
param.second().map(new
Function<ConsumerMessage.CommittableMessage<SpecificRecord,SpecificRecord>,
ProducerMessage.Message<SpecificRecord, SpecificRecord,
ConsumerMessage.Committable>>() {
public ProducerMessage.Message<SpecificRecord, SpecificRecord,
ConsumerMessage.Committable> apply(
CommittableMessage<SpecificRecord, SpecificRecord> msg)
throws Exception {
//logger.debug(Thread.currentThread().getName() +
"msg---------------------------------------------------" + msg);
logger.debug(Thread.currentThread().getName() + "
msg---------------------------------------------------" +
msg.record().value().getClass());
final Timeout timeout = new Timeout(5, TimeUnit.SECONDS);
Future<Object> future = Patterns.ask(tpperactor, msg, timeout);
logger.debug(Thread.currentThread().getName() + "
asking---------------------------------------------------" +
msg.record().value().getClass());
List<CommittableMessage<SpecificRecord, SpecificRecord>> outlist = new
ArrayList<>();
CommittableMessage<SpecificRecord, SpecificRecord> outmsg =
(CommittableMessage<SpecificRecord, SpecificRecord>) Await.result(future,
timeout.duration());
logger.debug(Thread.currentThread().getName() + "
back---------------------------------------------------" +
outmsg.record().value().getClass());
ProducerMessage.Message<SpecificRecord, SpecificRecord,
ConsumerMessage.Committable> result =
new ProducerMessage.Message<SpecificRecord, SpecificRecord,
ConsumerMessage.Committable>(
new ProducerRecord<SpecificRecord, SpecificRecord>("akkatest2",
outmsg.record().key(), outmsg.record().value()),
outmsg.committableOffset());
return result;
}
});
return f.runWith(Producer.commitableSink(producerSettings),
materializer);
}
}).runForeach(new Procedure<Done>() {
@Override
public void apply(Done param) throws Exception {
}
}, materializer);
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