use zip method On Sunday, 22 November 2015 23:49:14 UTC+8, Muki wrote: > > Hi, > > I have a stream pipeline like this: > > progress queue +---------> mapping +---------+ > | > ^ ^ ^ | > | | | v > | | +------------------------+ +-- merge +---> > | | | ^ > | +---------+ | | > + + + | > data +--------> stage1 +--------> stage2 +----+ > > > > - *data* is a single source that generates the data to be processed > - *progress queue* is a > Source.queue[Progress](10, OverflowStrategy.dropHead) where the > progress should be emitted > - *stage1 *and* stage2* are emitting elements to the next stage and > also the the *progress queue* > > > So these are actually two different data pipelines, which are only > connected by the *progress queue* and the *merge* in the end. > The initial implementation just sent messages to a progress actor, which > then send it over a play-websocket. Now I want to do this > with akka-http and the websocket describes as a Flow[Message, Message]. > > I read "Accessing the materialized value inside the Graph" > <http://doc.akka.io/docs/akka-stream-and-http-experimental/2.0-M1/scala/stream-graphs.html#Accessing_the_materialized_value_inside_the_Graph>, > > but couldn't figure out how to implement this kind of pattern. > > Thanks in advance, > Muki >
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