mirror of https://github.com/Chocobozzz/PeerTube
58 lines
2.4 KiB
Markdown
58 lines
2.4 KiB
Markdown
# Server code documentation
|
|
|
|
The server is a web server developed with [TypeScript](https://www.typescriptlang.org/)/[Express](http://expressjs.com).
|
|
|
|
|
|
## Technologies
|
|
|
|
* [TypeScript](https://www.typescriptlang.org/) -> Language
|
|
* [PostgreSQL](https://www.postgresql.org/) -> Database
|
|
* [Express](http://expressjs.com) -> Web server framework
|
|
* [Sequelize](http://docs.sequelizejs.com/en/v3/) -> SQL ORM
|
|
* [WebTorrent](https://webtorrent.io/) -> BitTorrent tracker and torrent creation
|
|
* [Mocha](https://mochajs.org/) -> Test framework
|
|
|
|
|
|
## Files
|
|
|
|
The server main file is [server.ts](/server.ts).
|
|
The server modules description are in the [package.json](/package.json) at the project root.
|
|
All other server files are in the [server](/server) directory:
|
|
|
|
server.ts -> app initilization, main routes configuration (static routes...)
|
|
config -> server YAML configurations (for tests, production...)
|
|
scripts -> Scripts files for npm run
|
|
server
|
|
|__ controllers -> API routes/controllers files
|
|
|__ helpers -> functions used by different part of the project (logger, utils...)
|
|
|__ initializers -> functions used at the server startup (installer, database, constants...)
|
|
|__ lib -> library function (WebTorrent, OAuth2, ActivityPub...)
|
|
|__ middlewares -> middlewares for controllers (requests validators, requests pagination...)
|
|
|__ models -> Sequelize models for each SQL tables (videos, users, accounts...)
|
|
|__ tests -> API tests and real world simulations (to test the decentralized feature...)
|
|
|
|
|
|
## Conventions
|
|
|
|
Uses [JavaScript Standard Style](http://standardjs.com/).
|
|
|
|
## Architecture
|
|
|
|
The server is composed by:
|
|
|
|
* a REST API (Express framework)
|
|
* a WebTorrent Tracker
|
|
|
|
A video is seeded by the server with the [WebSeed](http://www.bittorrent.org/beps/bep_0019.html) protocol (HTTP).
|
|
|
|
|
|
|
|
When a user uploads a video, the rest API create the torrent file and then adds it to its database.
|
|
|
|
If a user wants to watch the video, the tracker will indicate all other users that are watching the video + the HTTP url for the WebSeed.
|
|
|
|
## Newcomers
|
|
|
|
The server entrypoint is [server.ts](/server.ts). You can begin to look at this file.
|
|
Then you can try to understand the [controllers](/server/controllers): they are the entrypoint of each API request.
|