MariaLapovska opened a new issue, #13016:
URL: https://github.com/apache/apisix/issues/13016

   ### Current Behavior
   
   When I'm using ext-plugin-post-resp and http-logger, some values are missing 
from the logs, specifically the ones related to upstream - upstream and 
upstream_latency (same as described in this issue - 
https://github.com/apache/apisix/issues/10369).
   
   ### Expected Behavior
   
   I believe this isis happening because `upstream_response_time` and 
`upstream_addr` nginx vars are unavailable, so when log-util.lua is trying to 
inject them into logs, no value is present. I understand that when using 
ext-plugin-post-resp, the mechanics of calling upstream is different, but I 
still expect to have these values in the logs, no matter what route 
configuration I have.
   
   For now, the only way for me to fix it, was to change _M.before_proxy method 
in ext-plugin-post-resp.lua and explicitly set these vars:
   ```
   function _M.before_proxy(conf, ctx)
       local start_time = ngx.now()  -- EDIT: Start timer here
       local http_obj = http.new()
       local res, err = get_response(ctx, http_obj)
   
       -- EDIT: Set upstream vars, right after get_response returns
       ctx.var.upstream_response_time = math.floor((ngx.now() - start_time) * 
1000 + 0.5) / 1000
       ctx.var.upstream_addr = ctx.picked_server.host .. ":" .. 
ctx.picked_server.port
   ```
   
   ### Error Logs
   
   _No response_
   
   ### Steps to Reproduce
   
   1. Run APISIX
   2. Create a route that would have two plugins - http-logger and 
ext-plugin-post-resp
   3. Try to make call to upstream
   4. Check the logs sent by http-logger and see that upstream and 
upstream_latency are missing
   
   ### Environment
   
   - APISIX version (run `apisix version`): 3.13.0
   - Operating system (run `uname -a`): Darwin 25.2.0
   - OpenResty / Nginx version (run `openresty -V` or `nginx -V`):
   - etcd version, if relevant (run `curl 
http://127.0.0.1:9090/v1/server_info`): 9.7.3
   - APISIX Dashboard version, if relevant: 0.8.2
   - Plugin runner version, for issues related to plugin runners: 
ext-java-plugin-runner 0.6.0
   - LuaRocks version, for installation issues (run `luarocks --version`):
   


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