78 lines
3.5 KiB
Markdown
78 lines
3.5 KiB
Markdown
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<p align="center"><img src="https://y.zxq.co/jobeei.png"></p>
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# CheeseGull [](https://travis-ci.org/osuripple/cheesegull)
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CheeseGull creates an unofficial "slave" database of the official osu! beatmap
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database, trying to keep every beatmap up to date as much as possible, as well
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as a cache middleman for osz files.
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The main purpose for this is, as you can see from the owner of the repository,
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for running a sort of "beatmap mirror" for Ripple's osu! direct. We originally
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used an actual osu! beatmap mirror which had all of the beatmaps on osu!
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downloaded, but it ended up taking wayyyy too much space, and the cheapest
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server we could find that had at least 2 TB of HDD had an upload speed of
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30mbit - as you can guess, this meant that for the Ripple users who didn't have
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a third world connection the download speed was pretty poor.
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CheeseGull tries to hold a replica of the osu! database as updated as possible.
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Though of course, not having any way to see the latest updated beatmaps, or have
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a system for subscribing to updates to beatmap, or anything else which could
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help us identify what has been updated recently makes it very hard to do keep
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an updated copy at all times (Takeaway: the osu! API is completely shit). In
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order to do this, CheeseGull updates WIP, Pending or Qualified beatmaps when
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at least 30 minutes have passed since the time they were checked, whereas for
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all other beatmaps (including Graveyard, Ranked, Approved, etc) at least 4 days
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must have passed. This is not a problem for ranked/approved (it's highly
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unlikely for a ranked beatmap to ever change state, and Graveyard beatmaps
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are rarely resurrected, so there's that).
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Beatmap downloads are also provided by going at `/d/<id>`. In case the beatmap
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is not stored in the local cache, the beatmap will be downloaded on-the-fly
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(this assumes the machine's internet connection is fast enough to download a
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beatmap before a HTTP timeout happens). In case the beatmap already is in the
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cache, then well, as you can imagine, it is served straight from there. Oh, yes,
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multiple people downloading a not cached beatmap at the same time is a case we
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handle. Or should be able to handle, at least.
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## [API docs](http://docs.ripple.moe/docs/cheesegull/cheesegull-api)
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## Getting Started
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You can find binaries of the latest release
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[here.](https://github.com/osuripple/cheesegull/releases/latest)
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If you want to compile from source, if you have Go installed it should only be
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a `go get github.com/osuripple/cheesegull` away.
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The only requirements at the moment are a MySQL server and an osu! account.
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Check out `cheesegull --help` to see how you can set them up for cheesegull to
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work properly.
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## Contributing
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No strict contribution guide at the moment. Just fork, clone, then
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```sh
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git checkout -b your-new-feature
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code . # make changes
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git add .
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git commit -m "Added thing"
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git push origin your-new-feature
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```
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Go to the GitHub website, and create a pull request.
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## Sphinx set-up
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If you want to test search using Sphinx, you will need to set it up.
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[Here is the sphinx.conf used in production, you probably only need to change lines 23-35](https://gist.github.com/thehowl/3dc046e2a0ab93fa1ffe5f0eca085905)
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(No, we're not using ElasticSearch. Search is meant to be fast and not take too
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much memory. Any Java solution can thus be tossed away since it does not suit
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these basic two requirements.)
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## License
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Seeing as this project is not meant exclusively for usage by Ripple, the license,
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unlike most other Ripple projects, is [MIT](LICENSE).
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