Thanks you are right, once i used all javadsl classes it gets compiled.
I got the simple app works, i like to try how the partition works. The
inner apply() is similar to the simple logic (no partition), now what i am
not sure if
1, what should completionStage contain, i am putting
CompletionStage<ProducerMessage.Message<SpecificRecord, SpecificRecord,
ConsumerMessage.Committable>>>
not sure if this is right.If so how/what should i return. Or should i
return CompletionStage<Done>, that leads to my 2nd question
2, where should i put runwith(), in the outer apply() or inner(), i have
been looking at the examples, but still not clear to me.
Source<Pair<TopicPartition, Source<CommittableMessage<SpecificRecord,
SpecificRecord>, NotUsed>>, Control> s
= Consumer.committablePartitionedSource(consumerSettings,
Subscriptions.topics("sanitation"));
s.mapAsync(3, new
Function<Pair<TopicPartition,Source<CommittableMessage<SpecificRecord,SpecificRecord>,NotUsed>>,
CompletionStage<ProducerMessage.Message<SpecificRecord, SpecificRecord,
ConsumerMessage.Committable>>>() {
public CompletionStage<ProducerMessage.Message<SpecificRecord,
SpecificRecord, ConsumerMessage.Committable>> apply(
Pair<TopicPartition,
Source<ConsumerMessage.CommittableMessage<SpecificRecord, SpecificRecord>,
NotUsed>> param)
throws Exception {
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 {
System.out.println(Thread.currentThread().getName() + "msg----------------"
+ msg);
return new ProducerMessage.Message<SpecificRecord, SpecificRecord,
ConsumerMessage.Committable>(
new ProducerRecord<SpecificRecord, SpecificRecord>("akkatest",
msg.record().key(), msg.record().value()), msg.committableOffset());
}
});
CompletableFuture<ProducerMessage.Message<SpecificRecord,SpecificRecord,Committable>>
fu = new
CompletableFuture<ProducerMessage.Message<SpecificRecord,SpecificRecord,Committable>>();;
return fu;
}
}).runWith(Producer.commitableSink(producerSettings), materializer);
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