Codes – typed application outcomes for Kotlin and Java

 (github.com)

5 points | by aalsanie 6 days ago

3 comments

  • 0x445442 9 minutes ago
    Result<T> { String resultCode; T data; List<String> errors; }
  • looksjjhg 1 hour ago
    I’ve read the readme 3 times and I still don’t understand what it is … it looks like someone learning effect systems but not quite there yet !?
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    • qw 56 minutes ago
      From what I can tell it is a library for standardising return values that is independent on the transport medium. A HTTP service may return a particular http code or body, and gRPC would have its own representation.

      I think this library maps the different representations into a single representation. The business logic, metrics, logging etc. will use the single representation instead of being tightly coupled to the transport medium

      Example from the docs where the "PAYMENT_DECLINED" state is mapped from protocol specific responses:

        PAYMENT_DECLINED
  |
  +-- HTTP 422
  +-- gRPC FAILED_PRECONDITION
  |
  --> logs/metrics keep PAYMENT_DECLINED
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