In my testing i got this simple source->map->sink working,
Source<CommittableMessage<SpecificRecord, SpecificRecord>, Control> s =
Consumer.committableSource(consumerSettings,
Subscriptions.topics("sanitation")).asJava();
s.map(new
Function<ConsumerMessage.CommittableMessage<SpecificRecord,SpecificRecord>,
ProducerMessage.Message<SpecificRecord,SpecificRecord,
ConsumerMessage.Committable>>() {
public Message<SpecificRecord, SpecificRecord, 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());
}
}).runWith(Producer.commitableSink(producerSettings), materializer);
now i want to test parallel by partition, i dont know what to put in the
CompletionStage, can someone help or point me some doc/examples?
TopicPartition par = new TopicPartition("test", 3);
Source<Tuple2<TopicPartition,
akka.stream.scaladsl.Source<CommittableMessage<SpecificRecord,
SpecificRecord>, NotUsed>>, Control> s
= Consumer.committablePartitionedSource(consumerSettings,
Subscriptions.topics("test")).asJava();
s.mapAsync(3, new
Function<Tuple2<TopicPartition,Source<CommittableMessage<SpecificRecord,SpecificRecord>,NotUsed>>,
CompletionStage<ProducerMessage.Message<SpecificRecord,SpecificRecord,
ConsumerMessage.Committable>>>() {
public CompletionStage<Message<SpecificRecord, SpecificRecord,
Committable>> apply(
Tuple2<TopicPartition, Source<CommittableMessage<SpecificRecord,
SpecificRecord>, NotUsed>> param)
throws Exception {
// TODO Auto-generated method stub
return null;
}
});
Thanks
Shannon
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