Ruby » Ruby master

Feature #20864

Updated by ioquatix (Samuel Williams) 27 days ago

## Background 

 `Kernel#warn` is extremely useful, especially because there useful. 

 It is a mechanism for loggers to redirect warnings using the `Warning` module. Currently, it is possible to include some details about the current caller using `uplevel` for the current call stack. But it is not possible to include details about exceptions. errors. 

 I'd like to propose another extension to log errors. 

 ```ruby 
 begin 
   ... # some work 
 rescue => error 
   warn "Something went wrong!", exception: "An error occurred!", error: error 
 end 
 ``` 

 Because of this, trying to emit detailed structured logs from `warn` is tricky. 

 ## Proposal 

 I'd like to propose another extension to log errors. We Such a feature would allow `warn(..., **options)` to accept all options, and forward them all to `Warning.warn`. 

 This would allow us to add more details to warnings and emit structured logs log errors using `Warning.warn`. 

 A simple example of the proposed interface: 

 ```ruby 
 module Kernel 
   def warn(*arguments, uplevel: ..., **options) 
     # Existing processing of arguments -> message 
     ::Warning.warn(message, **options) 
   end 
 end 
 ``` a standard interface. 

 I don't have an opinion about the implementation, but I wanted to get feedback on the interface.

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