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fix: use automatic IP detection instead of cache proxy host config value for internal cache server (#1088)

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The description for the `cache.host` config value is

```
  # The IP or hostname (195.84.20.30 or example.com) to use when constructing
  # ACTIONS_CACHE_URL which is the URL of the cache proxy.
```

however the internal cache *server* was being started using that value, despite it clearly stating its for the *proxy*.

While the address used to contact the cache proxy from the job is *usually* the same as the address for the cache proxy to contact the server, that is not the case with custom /etc/hosts entries, like what is used for the `host.containers.internal` address, which is needed for contacting the cache proxy on rootless podman (see #1075).

Since the cache proxy and internal cache server are always running on the same host (or container), it's safe to use localhost for the server address instead.

<!--start release-notes-assistant-->
<!--URL:https://code.forgejo.org/forgejo/runner-->
- bug fixes
  - [PR](https://code.forgejo.org/forgejo/runner/pulls/1088): <!--number 1088 --><!--line 0 --><!--description Zml4OiB1c2UgYXV0b21hdGljIElQIGRldGVjdGlvbiBpbnN0ZWFkIG9mIGNhY2hlIHByb3h5IGhvc3QgY29uZmlnIHZhbHVlIGZvciBpbnRlcm5hbCBjYWNoZSBzZXJ2ZXI=-->fix: use automatic IP detection instead of cache proxy host config value for internal cache server<!--description-->
<!--end release-notes-assistant-->

Reviewed-on: https://code.forgejo.org/forgejo/runner/pulls/1088
Reviewed-by: Mathieu Fenniak <mfenniak@noreply.code.forgejo.org>
Reviewed-by: Kwonunn <kwonunn@noreply.code.forgejo.org>
Reviewed-by: Michael Kriese <michael.kriese@gmx.de>
Co-authored-by: Andrew Cassidy <drewcassidy@me.com>
Co-committed-by: Andrew Cassidy <drewcassidy@me.com>
This commit is contained in:
Andrew Cassidy 2025-10-16 07:42:36 +00:00 • committed by earl-warren
parent aa6eef94fd
commit a7487dadd7
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2
internal/app/run/runner.go
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@ -117,7 +117,7 @@ func setupCache(cfg *config.Config, envs map[string]string) *cacheproxy.Handler
cacheServer, err := artifactcache.StartHandler(
cfg.Cache.Dir,
cfg.Cache.Host,
"", // automatically detect
cfg.Cache.Port,
cacheSecret,
log.StandardLogger().WithField("module", "cache_request"),