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README.md
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README.md
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# Chihaya [](https://travis-ci.org/pushrax/chihaya)
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Chihaya is a high-performance [BitTorrent tracker](http://en.wikipedia.org/wiki/BitTorrent_tracker)
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written in the Go programming language. It is still heavily under development and should not be used
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in production. Some of the planned features include.
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written in the Go programming language. It is still heavily under development and the current `master` branch
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should not be used in production.
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- Low resource consumption
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- *Fast* request processing
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Planned features include:
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- Light resource consumption
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- Fast request processing, sparing the network from exorbitant connection counts
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- Maximum compatibility with what exists of the BitTorrent spec
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- Correct IPv6 support
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- A generic storage interfaces that is easily adapted to use any data store and web application
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- Generic storage interfaces that are easily adapted to work with any existing web application
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- Scaling properties that directly correlate with those of the chosen data stores
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## Architecture
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### Technical Details
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You are most likely looking to integrate Chihaya with a web application for organizing torrents
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and managing a community. Chihaya was designed with this in mind, but also tries to remain
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independent. Chihaya connects to two data stores. The first, known as "cache", is used between
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Chihaya processes in order to keep up with fast changing data. The second, known as "storage",
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is your web application's data store. Changes immediately take place in the cache, which is why
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fast data stores are recommended. These changes are also collected and periodically applied to the
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storage in order to avoid locking up your web application's data store.
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See [the wiki](https://github.com/pushrax/chihaya/wiki) for a discussion of the design behind Chihaya.
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## Using Chihaya
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## Installing
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Chihaya is intended to work with existing torrent indexing web frameworks, such as [batter] and [Gazelle].
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Following the Unix way, it is built to perform a specific task, and interface with any system that
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needs its functionality. See [below](#drivers) for more info.
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Make sure you have your $GOROOT and $GOPATH set up correctly and have your $GOBIN on your $PATH.
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[batter]: https://github.com/wafflesfm/batter
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[gazelle]: https://github.com/whatcd/gazelle
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### Installing
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Make sure you have your `$GOROOT` and `$GOPATH` set up correctly, and have your `$GOBIN` in your `$PATH`.
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```sh
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$ go install github.com/pushrax/chihaya
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$ go get github.com/pushrax/chihaya
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```
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## Testing
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### Configuring
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Configuration is done in a JSON formatted file specified with the `-config`
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flag. An example configuration file can be found
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[here](https://github.com/pushrax/chihaya/blob/master/config/example.json).
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### Running the tests
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```sh
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$ export TESTCONFIGPATH=$GOPATH/src/chihaya/config/example.json
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@ -38,64 +48,34 @@ $ go get github.com/pushrax/chihaya
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$ go test -v ./...
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```
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## Configuring
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## Drivers
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Configuration is done in a JSON formatted file specified with the `-config`
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flag. An example configuration can be seen in the `exampleConfig` variable of
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[`config/config_test.go`](https://github.com/pushrax/chihaya/blob/master/config/config_test.go).
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Chihaya is designed to remain agnostic about the choice of data store for an
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application, and it is straightforward to [implement a new driver]. However, there
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are a number of directly supported drivers:
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## Default drivers
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Cache:
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### Cache
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* [redis](http://redis.io) — allows for multiple tracker instances to run at the same time for the same swarm
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* memory — only a single instance can run, but it requires no extra setup
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Chihaya currently supports drivers for the following caches out of the box:
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* [redis](http://redis.io)
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### Storage
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Chihaya currently supports drivers for the following storages out of the box:
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Storage:
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* [batter-postgres](https://github.com/wafflesfm/batter)
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* [gazelle-mysql](https://github.com/whatcd/gazelle)
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## Custom drivers
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[implement a new driver]: https://github.com/pushrax/chihaya/wiki/Implementing-a-driver
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Please read the documentation and understand these interfaces as there are
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assumptions made about thread-safety. After you've implemented a new driver,
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all you have to do is remember to add `import _ path/to/your/package` to the
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top of `main.go` and the side effects from `init()` will globally register
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your driver so that config package will recognize your driver by name.
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If you're writing a driver for a popular data store, consider contributing it.
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### Cache
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The [`cache`] package is heavily inspired by the standard library's
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[`database/sql`] package. To write a new cache backend, create a new Go
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package that has an implementation of the [`Pool`], [`Tx`], and [`Driver`]
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interfaces. Within that package, you must also define an [`init()`] that calls
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[`cache.Register`].
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[`cache`]: http://godoc.org/github.com/pushrax/chihaya/cache
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[`database/sql`]: http://godoc.org/database/sql
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[`Pool`]: http://godoc.org/github.com/pushrax/chihaya/cache#Pool
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[`Tx`]: http://godoc.org/github.com/pushrax/chihaya/cache#Tx
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[`Driver`]: http://godoc.org/github.com/pushrax/chihaya/cache#Driver
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[`init()`]: http://golang.org/ref/spec#Program_execution
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[`cache.Register`]: http://godoc.org/github.com/pushrax/chihaya/cache#Register
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### Storage
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TODO
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## Contributing
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If you're interested in contributing, please contact us in **[#chihaya] on
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[freenode IRC]** or post to the GitHub issue tracker. Please don't offer
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massive pull requests with no prior communication attempts as it will most
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If you're interested in contributing, please contact us via IRC in **[#chihaya] on
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[freenode]** or post to the GitHub issue tracker. Please don't write
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massive patches with no prior communication, as it will most
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likely lead to confusion and time wasted for everyone. However, small
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unannounced fixes are always welcome.
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unannounced fixes are always welcome!
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[#chihaya]: http://webchat.freenode.net?channels=chihaya
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[freenode IRC]: http://freenode.net
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[freenode]: http://freenode.net
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And remember: good gophers always use gofmt!
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