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get rid of direct usages of web sockets on the backend
Signed-off-by: Anton Kosiakov <anton.kosyakov@typefox.io>
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131 changes: 131 additions & 0 deletions
131
packages/core/src/node/messaging/messaging-contribution.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,131 @@ | ||
| /* | ||
| * Copyright (C) 2018 TypeFox and others. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 | ||
| */ | ||
|
|
||
| import * as ws from 'ws'; | ||
| import * as url from 'url'; | ||
| import * as http from 'http'; | ||
| import * as https from 'https'; | ||
| import { injectable, inject, named, postConstruct } from "inversify"; | ||
| import { MessageConnection } from 'vscode-jsonrpc'; | ||
| import { createWebSocketConnection } from 'vscode-ws-jsonrpc/lib/socket/connection'; | ||
| import { IConnection } from 'vscode-ws-jsonrpc/lib/server/connection'; | ||
| import * as launch from 'vscode-ws-jsonrpc/lib/server/launch'; | ||
| import { IWebSocket } from 'vscode-ws-jsonrpc/lib/socket/socket'; | ||
| import { ContributionProvider, ConnectionHandler } from '../../common'; | ||
| import { BackendApplicationContribution } from "../backend-application"; | ||
| import { MessagingService } from './messaging-service'; | ||
| import { ConsoleLogger } from "./logger"; | ||
|
|
||
| import Route = require('route-parser'); | ||
|
|
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| @injectable() | ||
| export class MessagingContribution implements BackendApplicationContribution, MessagingService { | ||
|
|
||
| @inject(ContributionProvider) @named(ConnectionHandler) | ||
| protected readonly handlers: ContributionProvider<ConnectionHandler>; | ||
|
|
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| @inject(ContributionProvider) @named(MessagingService.Contribution) | ||
| protected readonly contributions: ContributionProvider<MessagingService.Contribution>; | ||
|
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||
| @postConstruct() | ||
| protected init(): void { | ||
| for (const contribution of this.contributions.getContributions()) { | ||
| contribution.configure(this); | ||
| } | ||
| for (const handler of this.handlers.getContributions()) { | ||
| this.listen(handler.path, (params, connection) => | ||
| handler.onConnection(connection) | ||
| ); | ||
| } | ||
| } | ||
|
|
||
| listen(spec: string, callback: (params: MessagingService.Params, connection: MessageConnection) => void): void { | ||
| return this.pushAcceptor(spec, (params, socket) => { | ||
| const connection = createWebSocketConnection(this.toIWebSocket(socket), new ConsoleLogger()); | ||
| callback(params, connection); | ||
| }); | ||
| } | ||
|
|
||
| forward(spec: string, callback: (params: MessagingService.Params, connection: IConnection) => void): void { | ||
| return this.pushAcceptor(spec, (params, socket) => { | ||
| const connection = launch.createWebSocketConnection(this.toIWebSocket(socket)); | ||
| callback(params, connection); | ||
| }); | ||
| } | ||
|
|
||
| protected readonly acceptors: ((path: string, socket: ws) => boolean)[] = []; | ||
| protected pushAcceptor(spec: string, callback: (params: MessagingService.Params, socket: ws) => void): void { | ||
| const route = new Route(spec); | ||
| this.acceptors.push((path, socket) => { | ||
| const params = route.match(path); | ||
| if (!params) { | ||
| return false; | ||
| } | ||
| callback(params, socket); | ||
| return true; | ||
| }); | ||
| } | ||
| protected dispatch(socket: ws, request: http.IncomingMessage): void { | ||
| const pathname = request.url && url.parse(request.url).pathname; | ||
| if (!pathname) { | ||
| return; | ||
| } | ||
| for (const acceptor of this.acceptors) { | ||
| try { | ||
| if (acceptor(pathname, socket)) { | ||
| return; | ||
| } | ||
| } catch (e) { | ||
| console.error(e); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| protected checkAliveTimeout = 30000; | ||
| onStart(server: http.Server | https.Server): void { | ||
| const wss = new ws.Server({ | ||
| server, | ||
| perMessageDeflate: false | ||
| }); | ||
| interface CheckAliveWS extends ws { | ||
| alive: boolean; | ||
| } | ||
| wss.on('connection', (socket: CheckAliveWS, request) => { | ||
| socket.alive = true; | ||
| socket.on('pong', () => socket.alive = true); | ||
| this.dispatch(socket, request); | ||
| }); | ||
| setInterval(() => { | ||
| wss.clients.forEach((socket: CheckAliveWS) => { | ||
| if (socket.alive === false) { | ||
| return socket.terminate(); | ||
| } | ||
| socket.alive = false; | ||
| socket.ping(); | ||
| }); | ||
| }, this.checkAliveTimeout); | ||
| } | ||
|
|
||
| protected toIWebSocket(webSocket: ws): IWebSocket { | ||
| return <IWebSocket>{ | ||
| send: content => webSocket.send(content, error => { | ||
| if (error) { | ||
| console.log(error); | ||
| } | ||
| }), | ||
| onMessage: cb => webSocket.on('message', cb), | ||
| onError: cb => webSocket.on('error', cb), | ||
| onClose: cb => webSocket.on('close', cb), | ||
| dispose: () => { | ||
| if (webSocket.readyState < ws.CLOSING) { | ||
| webSocket.close(); | ||
| } | ||
| } | ||
| }; | ||
| } | ||
|
|
||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,24 @@ | ||
|
|
||
| /* | ||
| * Copyright (C) 2018 TypeFox and others. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 | ||
| */ | ||
|
|
||
| import { MessageConnection } from "vscode-jsonrpc"; | ||
| import { IConnection } from "vscode-ws-jsonrpc/lib/server/connection"; | ||
|
|
||
| export interface MessagingService { | ||
| listen(path: string, callback: (params: MessagingService.Params, connection: MessageConnection) => void): void; | ||
| forward(path: string, callback: (params: MessagingService.Params, connection: IConnection) => void): void; | ||
| } | ||
| export namespace MessagingService { | ||
| export interface Params { | ||
| [name: string]: string | ||
| } | ||
| export const Contribution = Symbol('MessagingService.Contribution'); | ||
| export interface Contribution { | ||
| configure(service: MessagingService): void; | ||
| } | ||
| } |
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