Monix is a library providing asynchronous programming facilities for Scala and Scala.js.
Questions tagged [monix]
94 questions
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votes
1 answer
Task[List[List[A]]] to Task[A] if list has elements
I have a method which returns Task[List[List[A]]] and I need to transform to Task[A] if the list is greater than 0
def method():Task[List[List[A]]] = {}
val d:Task[List[A]] = method().map(_.flatten)
How to get Task[A] is a list of A if the inner…
Sumeet Kumar Yadav
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1 answer
Collecting data from all tasks executed on monix Scheduler
I'm using Monix Scheduler to execute some tasks periodically. But I don't know how to not just execute them, but also to collect result from them to some collection...
Lets say I have a scheduled task that returns a random number every time:
val…
Lykov
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- 1
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1 answer
How to buffer emission with custom weither function
I need functionality like monix.Observable.bufferTimedAndCounted but with custom "weither". I found bufferTimedWithPressure operator which allow use item's weith:
val subj = PublishSubject[String]()
subj
.bufferTimedWithPressure(1.seconds, 5, _…
zella
- 4,645
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1 answer
Monix write to single output stream from parallel Tasks
how can we use Monix Tasks to write a single output stream from a sequence of tasks (can run in parallel):
for example, I have N tasks that can be run in parallel and get some response from HTTP call/server, and I'm writing the response back to a…
vkt
- 1,401
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how to implement back-pressure for a reactive network library?
There is a little long background story about the problem in my socket reactive library working process.
The socket library mainly based on a reactive library named Monix(similar ReactiveX). Monix has the best practice to handle back-pressure by…
LoranceChen
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empty in Monix Task
Project Reactor has something like Mono.empty[T]() which can be handled in special circumstances where you do not have anything when it is evaluated. Is there something similar in Monix Task?
def getItemFromList[T](inp: Mono[List[T]]): Mono[T] = {
…
Abhishek Agrawal
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- 2
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1 answer
Monix TaskLocal does not seem to reflect values from bind() call when referenced by Task by from different lexical scope
I have a block of code that is a slight modification of the code snippet given in the ScalaDoc for TaskLocal
[ original here: https://monix.io/api/3.0/monix/eval/TaskLocal.html ].
My code simply replaces the inline task (within the for…
Chris Bedford
- 2,560
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Retrying Monix Task - why Task.defer is required here?
I recently spotted a case I can't fully understand while working with Monix Task:
There are two functions (in queue msg handler):
def handle(msg: RollbackMsg): Task[Unit] = {
logger.info(s"Attempting to rollback transaction ${msg.lockId}")
…
Michal Ostruszka
- 2,089
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how does building a big task computation compare to execute synchronously several steps?
I have the following two pieces of code written in Scala/Monix:
def f1(input) =
for {
a <- task1(input)
b <- task2(a)
c <- task3(b)
} yield (c).runSyncUnsafe
and
def f2(input) = {
val a = task1(input).runSyncUnsafe
val b =…
vidi
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0
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2 answers
How to make monix fixed rate Scheduler continue upon failure
I am just starting to use monix, in part for scheduling repeated work in a long running app. I will manage exceptions but I would like that monix continue calling the given function even if I let pass some of them.
Now, from a simple test, once a…
Juh_
- 14,628
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1 answer
Understanding monix consumer load balance
I am learning monix 3.
The next code:
object Main extends TaskApp {
override def runc = {
Observable.fromIterable(1 to 10)
.map{i =>
val delay = Random.nextInt(1000) + 1000
println(s"Starting $i, delay = $delay")
…
Oleg
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0
votes
1 answer
Idiomatic way to handle multiple concurrent streams in Scala
I have a list of streams that, upon calling their next() will sleep random amount of time and then read one char from a different source.
I am trying to write a consumer(s) that will keep calling these streams until EOF and build a common dictionary…
smohamed
- 3,234
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Akka Actor Searching and Streaming Events
I have a scenario where I have a bunch of Akka Actors running with each Actor representing an IoT device. I have a web application based on Play inside which these Actors are running and are connected to these IoT devices.
Now I want to expose the…
joesan
- 13,963
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What is `alsoTo` analogue of akka-streams in monix ?
Monix looks like great framework but documentation is very sparse.
What is alsoTo analogue of akka-streams in monix ?
Basically I want stream to be consumed by two consumers.
expert
- 29,290
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1 answer
How to handle recursion with monix's observable?
Using monix I'm trying to traverse a graph by building an Observable[Node] and using a breadth first algorithm.
However there I have a bit of a recursion problem. Here is a snippet illustrating my problem:
package gp
import monix.eval.Task
import…
lorilan
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