qwzhou89 commented on issue #9928:
URL: https://github.com/apache/apisix/issues/9928#issuecomment-1659767143

   This can be achieved by combining several plugins, such as the following:
   ```yaml
   uri: /internal-check
   plugins:
     response-rewrite:
       headers:
         X-Api1-Status: '$status'
       status_code: 200
     proxy-rewrite: 
       uri: "/api1",
   upstream:
     nodes:
       - host: apisix
         port: 80
         weight: 1
     type: roundrobin
   status: 1
   ---
   uri: /testTrafficSplit
   host: apisix
   plugins:
     forward-auth:
       upstream_headers:
         - X-Api1-Status
       uri: http://127.0.0.1/internal-check
     serverless-pre-function:
       functions:
         - |
           local core = require('apisix.core');
           return function(conf, ctx)
             if ctx.var.http_x_api1_status == '200' then
               ctx.var.upstream_uri = '/api2'
             elseif ctx.var.http_x_api1_status == '400' then
               ctx.var.upstream_uri = '/api3'
             end
           end
       phase: before_proxy
   upstream:
     nodes:
       - host: apisix
         port: 80
         weight: 1
     type: roundrobin
   status: 1
   ``` 


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