[akka-user] How could I know if a streams completed from the outside

[Guofeng Zhang]

Hi,

I have defined a publisher actor and subscriber actor. How could I know if
the stream has been completed from the outside (where I create the stream)?

Thanks for your help.

Guofeng

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Re: [akka-user] How could I know if a streams completed from the outside

[Konrad Malawski]

Have you seen watchTermination on Source?

/**
 * Materializes to `Future[Done]` that completes on getting termination message.
 * The Future completes with success when received complete message
from upstream or cancel
 * from downstream. It fails with the same error when received error
message from
 * downstream.
 *
 * It is recommended to use the internally optimized `Keep.left` and
`Keep.right` combiners
 * where appropriate instead of manually writing functions that pass
through one of the values.
 */
def watchTermination[Mat2]()(matF: (Mat, Future[Done]) ⇒ Mat2):
ReprMat[Out, Mat2] = ???


Happy hakking

-- 
Konrad `ktoso` Malawski
Akka  @ Lightbend 

On 27 September 2016 at 05:19:11, Guofeng Zhang (guofen...@gmail.com) wrote:

Hi,

I have defined a publisher actor and subscriber actor. How could I know if
the stream has been completed from the outside (where I create the stream)?

Thanks for your help.

Guofeng
--
>> Read the docs: http://akka.io/docs/
>> Check the FAQ:
http://doc.akka.io/docs/akka/current/additional/faq.html
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