fn
req
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req
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How to implement a disk cache plugin for Elixir's Req HTTP client?
> no error checking at all (I assume it just panics or exception?)
In Elixir, bang functions per convention will raise on error. `get/2` will return error tuples allowing you to handle errors. In fact, get!/2 just calls get/2 and raises for you[^1].
> no mention of JSON at all
Req is the most "batteries included" Elixir HTTP lib out there. I can't speak for Wojtek, but I believe the goal was to make Req extremely easy to use in scripting or things like LiveBook without having to do much work. That being said, the automatic decoding is mentioned in the readme[^2] and the docs[^3].
> if "body" is JSON, how do you even get the raw body, or can you?
Per the docs[^3], you can either skip with a `:raw` option, or just build your own request using only the steps you want.
> just seems over engineered/over fitted whatever you want to call it.
Fair, but again, this library is designed to be on that end of the spectrum. There are plenty of other libraries further down the stack that you can use. I am partial to Finch[^4], upon which Req is built.
To address the sibling comment about "Let it Crash", the language allows you to easily recover from crashes, but that is for resiliency, not error handling. In practice you would use the non-bang get/2, pattern match on the response, handle any errors, perhaps use Kernel.get_in/2 to safely traverse the map, etc. The example provided by the author is not "production ready".
[^1]: https://github.com/wojtekmach/req/blob/v0.3.11/lib/req.ex#L3...
- A Breakdown of HTTP Clients in Elixir
What are some alternatives?
vinyl-json - Automatic json instances for Data.Vinyl
tesla - The flexible HTTP client library for Elixir, with support for middleware and multiple adapters.
req - An HTTP client library
httpoison - Yet Another HTTP client for Elixir powered by hackney
xml-to-json - Fast & easy command line tool for converting XML files to JSON
finch - Elixir HTTP client, focused on performance
lambdacms-core - A CMS in Haskell using Yesod: performant, developer friendly & type safe.
httpotion - [Deprecated because ibrowse is not maintained] HTTP client for Elixir (use Tesla please)
foop.hs - Object Oriented Programming implemented in Functional Paradigm
mint - Functional HTTP client for Elixir with support for HTTP/1 and HTTP/2 🌱
swagger-petstore - swagger-codegen contains a template-driven engine to generate documentation, API clients and server stubs in different languages by parsing your OpenAPI / Swagger definition.
aeson - A fast Haskell JSON library