Thanks for the quick answer.
With this I can do something with the data, but is it also possible, that
the flow (codec2) sends a bytestring, when it gets produced by the Source?
I tried the following, but here it waits until the source completes before
sending the whole Bytestring. I want that it sends the Bytestringparts
directly when they arrive.
public static final BidiFlow<Message, ByteString, ByteString, Message, NotUsed>
codec2 =
BidiFlow.fromFunctions((x -> {
if(x.isText()) {
log.info("textmessage currently not supported");
return null;
}else{
BinaryMessage binaryMessage = x.asBinaryMessage();
if(binaryMessage.isStrict()) {
log.info("strict Binary Message");
return binaryMessage.getStrictData();
}else{
Source<ByteString, ?> streamedData =
binaryMessage.getStreamedData();
CompletionStage<ByteString> byteStringCompletionStage =
streamedData.runFold(ByteString.empty(), (aggr, next) -> aggr.concat(next),
materializer);
return
byteStringCompletionStage.toCompletableFuture().get();
}
}
}), (x -> BinaryMessage.create(x)));
Am Dienstag, 31. Mai 2016 18:34:37 UTC+2 schrieb Konrad Malawski:
>
> It returned an Akka Stream there :-)
> So you should learn a bit about Akka Streams to know how to handle those:
> http://doc.akka.io/docs/akka/2.4.6/scala/stream/stream-quickstart.html
> <http://www.google.com/url?q=http%3A%2F%2Fdoc.akka.io%2Fdocs%2Fakka%2F2.4.6%2Fscala%2Fstream%2Fstream-quickstart.html&sa=D&sntz=1&usg=AFQjCNEBfFg0IgdVLvhtNScKjxB8WGhJqw>
> and take it from there.
>
> It's basically as simple as
> streamedData.map(_.utf8String).runWith(Sink.foreach(it => println(it))) etc.
>
> Hope this helps!
> --
> Konrad `ktoso` Malawski
> Akka <http://akka.io> @ Lightbend <http://lightbend.com>
>
> On 31 May 2016 at 18:28:49, Qux ([email protected] <javascript:>) wrote:
>
> Hi,
>
> I looked into many nice Examples with Akka Websockets (like
> https://markatta.com/codemonkey/blog/2016/04/18/chat-with-akka-http-websockets/),
>
> but sadly the used flows only handle strict Messages.
>
> Is is possible to write a Flow from Message to Bytestring that handles
> Strict and streamed Messages?
>
> Here my (java-)code so far:
>
> public static final BidiFlow<Message, ByteString, ByteString, Message,
> NotUsed> codec2 =
>> BidiFlow.fromFunctions((x -> {
>> if(x.isText()) {
>> log.info("textmessage currently not supported");
>> return null;
>> }else{
>> BinaryMessage binaryMessage = x.asBinaryMessage();
>> if(binaryMessage.isStrict()) {
>> log.info("strict Binary Message");
>> return binaryMessage.getStrictData();
>> }else{
>> Source<ByteString, ?> streamedData =
>> binaryMessage.getStreamedData();
>> // TODO: WHAT NOW???.
>> return null;
>> }
>> }
>> }), (x -> BinaryMessage.create(x)));
>>
>>
>
> I'm happy for all tips, java/scala-code-snippets and so on :)
>
> Big Thanks
> Qux
> --
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