moonming commented on code in PR #7554:
URL: https://github.com/apache/apisix/pull/7554#discussion_r931848410
##########
apisix/plugins/key-auth.lua:
##########
@@ -90,12 +93,28 @@ end
function _M.rewrite(conf, ctx)
local from_header = true
- local key = core.request.header(ctx, conf.header)
+ local key
+
+ if conf.var_combination then
+ local err, n_resolved
+ key, err, n_resolved = core.utils.resolve_var(conf.var_combination,
ctx.var)
+ if err then
+ core.log.error("could not resolve vars in ",
+ conf.var_combination, " error: ", err)
+ end
+
+ if n_resolved == 0 then
+ key = nil
+ end
Review Comment:
```suggestion
if err then
core.log.error("could not resolve vars in ",
conf.var_combination, " error: ", err)
elseif n_resolved == 0 then
key = nil
end
```
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