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code-server/typings/pluginapi.d.ts
2021-06-08 14:33:14 -07:00

294 lines
7.5 KiB
TypeScript

/**
* This file describes the code-server plugin API for adding new applications.
*/
import { field, Level, Logger } from "@coder/logger"
import * as express from "express"
import * as expressCore from "express-serve-static-core"
import ProxyServer from "http-proxy"
import * as net from "net"
import Websocket from "ws"
/**
* Overlay
*
* The homepage of code-server will launch into VS Code. However, there will be an overlay
* button that when clicked, will show all available applications with their names,
* icons and provider plugins. When one clicks on an app's icon, they will be directed
* to <code-server-root>/<plugin-path>/<app-path> to access the application.
*/
/**
* Plugins
*
* Plugins are just node modules that contain a top level export "plugin" that implements
* the Plugin interface.
*
* 1. code-server uses $CS_PLUGIN to find plugins.
*
* e.g. CS_PLUGIN=/tmp/will:/tmp/teffen will cause code-server to load
* /tmp/will and /tmp/teffen as plugins.
*
* 2. code-server uses $CS_PLUGIN_PATH to find plugins. Each subdirectory in
* $CS_PLUGIN_PATH with a package.json where the engine is code-server is
* a valid plugin.
*
* e.g. CS_PLUGIN_PATH=/tmp/nhooyr:/tmp/ash will cause code-server to search
* /tmp/nhooyr and then /tmp/ash for plugins.
*
* CS_PLUGIN_PATH defaults to
* ~/.local/share/code-server/plugins:/usr/share/code-server/plugins
* if unset.
*
*
* 3. Built in plugins are loaded from __dirname/../plugins
*
* Plugins are required as soon as they are found and then initialized.
* See the Plugin interface for details.
*
* If two plugins are found with the exact same name, then code-server will
* use the first one and emit a warning.
*
*/
/**
* Programmability
*
* There is also a /api/applications endpoint to allow programmatic access to all
* available applications. It could be used to create a custom application dashboard
* for example. An important difference with the API is that all application paths
* will be absolute (i.e have the plugin path prepended) so that they may be used
* directly.
*
* Example output:
*
* [
* {
* "name": "Test App",
* "version": "4.0.0",
* "iconPath": "/test-plugin/test-app/icon.svg",
* "path": "/test-plugin/test-app",
* "description": "This app does XYZ.",
* "homepageURL": "https://example.com",
* "plugin": {
* "name": "test-plugin",
* "version": "1.0.0",
* "modulePath": "/Users/nhooyr/src/cdr/code-server/test/test-plugin",
* "displayName": "Test Plugin",
* "description": "Plugin used in code-server tests.",
* "routerPath": "/test-plugin",
* "homepageURL": "https://example.com"
* }
* }
* ]
*/
export enum HttpCode {
Ok = 200,
Redirect = 302,
NotFound = 404,
BadRequest = 400,
Unauthorized = 401,
LargePayload = 413,
ServerError = 500,
}
export declare class HttpError extends Error {
constructor(message: string, status: HttpCode, details?: object)
}
export interface WebsocketRequest extends express.Request {
ws: net.Socket
head: Buffer
}
export type WebSocketHandler = (
req: WebsocketRequest,
res: express.Response,
next: express.NextFunction,
) => void | Promise<void>
export interface WebsocketRouter {
readonly router: express.Router
ws(route: expressCore.PathParams, ...handlers: WebSocketHandler[]): void
}
/**
* Create a router for websocket routes.
*/
export function WsRouter(): WebsocketRouter
/**
* The websocket server used by code-server.
*/
export const wss: Websocket.Server
/**
* The Express import used by code-server.
*
* Re-exported so plugins don't have to import duplicate copies of Express and
* to avoid potential version differences or issues caused by running separate
* instances.
*/
export { express }
/**
* Use to add a field to a log.
*
* Re-exported so plugins don't have to import duplicate copies of the logger.
*/
export { field, Level, Logger }
/**
* code-server's proxy server.
*/
export const proxy: ProxyServer
/**
* Middleware to ensure the user is authenticated. Throws if they are not.
*/
export function ensureAuthenticated(req: express.Request, res?: express.Response, next?: express.NextFunction): Promise<void>
/**
* Returns true if the user is authenticated.
*/
export function authenticated(req: express.Request): Promise<void>
/**
* Replace variables in HTML: TO, BASE, CS_STATIC_BASE, and OPTIONS.
*/
export function replaceTemplates<T extends object>(
req: express.Request,
content: string,
extraOpts?: Omit<T, "base" | "csStaticBase" | "logLevel">,
): string
/**
* Your plugin module must have a top level export "plugin" that implements this interface.
*
* The plugin's router will be mounted at <code-sever-root>/<plugin-path>
*/
export interface Plugin {
/**
* name is used as the plugin's unique identifier.
* No two plugins may share the same name.
*
* Fetched from package.json.
*/
readonly name?: string
/**
* The version for the plugin in the overlay.
*
* Fetched from package.json.
*/
readonly version?: string
/**
* Name used in the overlay.
*/
readonly displayName: string
/**
* Used in overlay.
* Should be a full sentence describing the plugin.
*/
readonly description: string
/**
* The path at which the plugin router is to be registered.
*/
readonly routerPath: string
/**
* Link to plugin homepage.
*/
readonly homepageURL: string
/**
* init is called so that the plugin may initialize itself with the config.
*/
init(config: PluginConfig): void
/**
* Called when the plugin should dispose/shutdown everything.
*/
deinit?(): Promise<void>
/**
* Returns the plugin's router.
*
* Mounted at <code-sever-root>/<plugin-path>
*
* If not present, the plugin provides no routes.
*/
router?(): express.Router
/**
* Returns the plugin's websocket router.
*
* Mounted at <code-sever-root>/<plugin-path>
*
* If not present, the plugin provides no websockets.
*/
wsRouter?(): WebsocketRouter
/**
* code-server uses this to collect the list of applications that
* the plugin can currently provide.
* It is called when /api/applications is hit or the overlay needs to
* refresh the list of applications
*
* Ensure this is as fast as possible.
*
* If not present, the plugin provides no applications.
*/
applications?(): Application[] | Promise<Application[]>
}
/**
* PluginConfig contains the configuration required for initializing
* a plugin.
*/
export interface PluginConfig {
/**
* All plugin logs should be logged via this logger.
*/
readonly logger: Logger
/**
* This can be specified by the user on the command line. Plugins should
* default to this directory when applicable. For example, the Jupyter plugin
* uses this to launch in this directory.
*/
readonly workingDirectory?: string
}
/**
* Application represents a user accessible application.
*/
export interface Application {
readonly name: string
readonly version: string
/**
* When the user clicks on the icon in the overlay, they will be
* redirected to <code-server-root>/<plugin-path>/<app-path>
* where the application should be accessible.
*
* If undefined, then <code-server-root>/<plugin-path> is used.
*/
readonly path?: string
readonly description?: string
/**
* The path at which the icon for this application can be accessed.
* <code-server-root>/<plugin-path>/<app-path>/<icon-path>
*/
readonly iconPath: string
/**
* Link to application homepage.
*/
readonly homepageURL: string
}