Hello!

On Fri, Sep 20, 2019 at 07:59:15AM +0000, PALMA Mickael wrote:

> Hi,
>
> Here is my location directive :
>
> server {
> # Start with an undefined API name, each API will update this value
> set $api_name -;
>
> [...]
>
> location = /_oauth {
> internal;
> set $api_name 'Oauth API';
>
> # Policy configuration here (authentication, rate limiting, logging, more...)
> mirror /_mirrored_api;
> proxy_pass http://$upstream$request_uri;
> }
> }
>
> In my log I only get “-“ as api_name but if I comment the mirror directive I get 'Oauth API’.
>
> Any idea how to avoid that.
> I always want the name to be ''Oauth API’'.

The problem is that variables space is shared among all
subrequests, including mirror one. As such, "set $api_name -;" in
the mirror subrequest overrides the one previously set for the
request. The only solution is to avoid changing variables you
don't want to be changed. In this particular configuration -
consider removing "set ..." from the server level.

--
Maxim Dounin
http://mdounin.ru/
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