[Feature Request] Prometheus metrics endpoint

[sbordeyne]

[Feature Request] Prometheus metrics endpoint

[Robonau]

A couple of the points u want are really unlikely to happen
suwayomi_extension_rate_limited (suwayomi doesn't know what is causing the slow down)
suwayomi_extensions_uptime (suwayomi only tries when using the extension)
suwayomi_extension_download_speed (this would only function when downloading from the extension at that moment)

Assuming you are using grafana to visualise your Prometheus data you can do some of what you want using the GraphQL Data Source
suwayomi_download_queue_size (if the data source allows subscriptions idk if it does, if not then i dont think adding a static query to get download subscription data would be a big deal)
suwayomi_downloaded_chapters_count
suwayomi_missing_chapters

suwayomi_chapters_size_bytes is really the only one that is reasonable but not possible through graphql
it would probably be easier to just add a graphql endpoint for chapters size