On 26 September 2017 at 10:47:44, Fabio Tiriticco (fabio.eur...@gmail.com) wrote:
Hi all, I noticed that the Framing flow of Akka Streams tends to stop the stream without letting the outer world know. In essence, the stream just stops and supervision is not triggered. It propagates errors through the stream, as defined by the reactive-streams spec as well as documented in the docs. http://doc.akka.io/docs/akka/2.5.4/scala/general/stream/stream-design.html#the-difference-between-error-and-failure Error handling examples are documented here, and I think we should add .log() as an example there which I’ll do now: http://doc.akka.io/docs/akka/2.5.4/scala/stream/stream-error.html (first sentence) I agree though that it can be confusing to newcomers to streaming libraries, and there is a ticket about it https://github.com/akka/akka/issues/23501 feel free to read through and comment or provide a PR if you’d like to help getting this shipped. The details of my findings are here: https://stackoverflow.com/questions/46319846/akka-streams-framing-exceptions-silently-swallowed-how-to-debug This link does not work. Is this behaviour desired? I am either missing something or this seems to make the system a little less reactive ;) It is desired. Failures are propagated *through* the stream, and if you want to log things, do so using the log() element, as as in my proposal above, terminal stages or an option are currently being considered to enable more verbose logging. In practice logging at every stage that is failing would be overly verbose, and we’ve had this in the past, where stream tear-down would cause users to panic, while the tear-down was expected and completely fine. I would like to ask you to refrain from such sarcasm when asking for help, as a) this has nothing to do with something being reactive or not and b) I’m not sure being sarcastic will help you receive the help you’re asking for in a public forum. Being polite will get you more help, and make this a nicer space to collaborate in, thanks. — Konrad `kto.so` Malawski Akka <http://akka.io> @ Lightbend <http://lightbend.com> -- >>>>>>>>>> Read the docs: http://akka.io/docs/ >>>>>>>>>> Check the FAQ: >>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user --- You received this message because you are subscribed to the Google Groups "Akka User List" group. To unsubscribe from this group and stop receiving emails from it, send an email to akka-user+unsubscr...@googlegroups.com. To post to this group, send email to akka-user@googlegroups.com. Visit this group at https://groups.google.com/group/akka-user. For more options, visit https://groups.google.com/d/optout.
