Background We have an app that deals with a considerable amount of requests per second. This app needs to notify an external service, by making a GET call via HTTPS to one of our servers. Objective The objective here is to use HTTPoison to make async GET requests. I don’t really care about the resp…

[image] Fl4m3Ph03n1x: Interesting idea, but I am a little bit interested in the result, i.e., as I explained I would like to know if the request failed so I can log it. Task.start(fn -> case HTTPoison.get("httpbin.org/get", [], hackney: [pool: :first_pool]) do ... _ -> Logger.what…

I would use Task.start - and then log the error from there should it fail.. Task — Elixir v1.20.2

Interesting idea, but I am a little bit interested in the result, i.e., as I explained I would like to know if the request failed so I can log it. Furthermore using Task means I wouldn’t be able to take advantage of the hackney pools HTTPoison uses, so I would have to create a Task (process) for ea…

Spawn a new process with a receive block and point your stream_to at that instead of self.

use receive to receive the messages… remember to drop those you don’t want to see…

@sanswork @NobbZ So there is no way to do this asynchronously using HTTPoison? What is the async documentation for then? How would one even use it? I swear I am getting more confused as time goes by.

Of course it is. send the request do whatever you want receive the payload Thats async for me. If you do not want to do this in the process that deals with the other stuff, you have to offload it into another process.

Unlike in most languages in Elixir or Erlang it’s trivial for a function to be made asynchronous using processes (possibly using an abstraction such as Task). Because of this we don’t need libraries to implement async versions of the functions they offer- and often we would prefer them not to as one…

The reason I mention why this is confusing is because receive is actually blocking. According to the documentation: If there is no message in the mailbox matching any of the patterns, the current process will wait until a matching message arrives I don’t want my process to wait for anything. I w…

[image] Fl4m3Ph03n1x: The reason I mention why this is confusing is because receive is actually blocking. Use and after 0 clause then. It will not block if there are no messages matching the patterns given.

Elixir Programming Language Forum

How to make async requests using HTTPoison?

Questions & Help Questions

sanswork January 14, 2019, 11:28am 7

What we just described is asyc using httpoison.