[GitHub] [apisix] starsz commented on issue #5634: request help: support get the key from function in limit-* plugins

[GitBox <gi...@apache.org>]

starsz commented on issue #5634:
URL: https://github.com/apache/apisix/issues/5634#issuecomment-982195527


   > What about allowing user to register their var in
   > 
   > https://github.com/apache/apisix/blob/8f0b066c86257ad6af19f9b3b7e209ece95d17c9/apisix/core/ctx.lua#L147
   > 
   > ?
   
   I think support function would be more flexible. 
   We can write the function like this: 
   ```
   function generate_key(ctx)
     if ctx.var.http_x_consumer == "a" then
          return "a"
     end
   
     return "default"
   end
   ```
   
   Then we can limit the specific request with a special header.


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