[英]Akka Stream callbacks
I'm new at Akka Streams and I have a question.我是 Akka Streams 的新手,我有一个问题。
So I have some Client (source code from official documentation below) which can handle and process data from Server .所以我有一些Client (来自下面官方文档的源代码)可以处理和处理来自Server 的数据。
private static final ActorSystem system = ActorSystem.create("Client");
private static final Materializer materializer = ActorMaterializer.create(system);
final Flow<ByteString, ByteString, CompletionStage<Tcp.OutgoingConnection>> connection =
Tcp.get(system).outgoingConnection("127.0.0.1", 8888);
final Flow<ByteString, ByteString, NotUsed> repl =
Flow.of(ByteString.class)
.map(ByteString::utf8String)
.map(text -> {
System.out.println("Server message ->: " + text);
return ByteString.fromString(text);
});
connection.join(repl).run(materializer);
How can I add callback methods ( onComplete()
, onError()
)?如何添加回调方法( onComplete()
、 onError()
)?
看看watchTermination
组合器,它将使流具体化一个 Future,它将完成或失败,具体取决于流是完成还是出错。
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