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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,110 @@ | ||
| import type { IncomingMessage } from 'http'; | ||
| import { promisify } from 'util'; | ||
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|
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| import express from 'express'; | ||
| import type { GraphQLSchema } from 'graphql'; | ||
| import { useServer } from 'graphql-ws/lib/use/ws'; | ||
| import ws from 'ws'; | ||
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| import AuthorizedSocketConnection from './AuthorizedSocketConnection'; | ||
| import type { CreateValidationRules } from './AuthorizedSocketConnection'; | ||
| import type { CredentialsManager } from './CredentialsManager'; | ||
| import type { CreateLogger, Logger } from './Logger'; | ||
| import type { Subscriber } from './Subscriber'; | ||
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| export type SubscriptionServerConfig<TContext, TCredentials> = { | ||
| path: string; | ||
| schema: GraphQLSchema; | ||
| subscriber: Subscriber<any>; | ||
| createCredentialsManager: (request: any) => CredentialsManager<TCredentials>; | ||
| hasPermission: (data: any, credentials: TCredentials) => boolean; | ||
| createContext?: ( | ||
| request: any, | ||
| credentials: TCredentials | null | undefined, | ||
| ) => TContext; | ||
| maxSubscriptionsPerConnection?: number; | ||
| createValidationRules?: CreateValidationRules; | ||
| createLogger?: CreateLogger; | ||
| }; | ||
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| // eslint-disable-next-line @typescript-eslint/no-empty-function | ||
| const defaultCreateLogger = () => () => {}; | ||
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| export default class SubscriptionServer<TContext, TCredentials> { | ||
| config: SubscriptionServerConfig<TContext, TCredentials>; | ||
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| log: Logger; | ||
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| server: ws.Server | null = null; | ||
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| constructor(config: SubscriptionServerConfig<TContext, TCredentials>) { | ||
| this.config = config; | ||
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| const createLogger: CreateLogger = | ||
| config.createLogger || defaultCreateLogger; | ||
| this.log = createLogger('@4c/SubscriptionServer::Server'); | ||
| } | ||
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| attach(httpServer: any) { | ||
| this.server = new ws.Server({ | ||
| server: httpServer, | ||
| path: this.config.path, | ||
| }); | ||
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| const { createContext } = this.config; | ||
|
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| useServer( | ||
| // from the previous step | ||
| { | ||
| schema: this.config.schema, | ||
| context: (ctx, msg, args) => { | ||
|
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| }, | ||
| onConnect() | ||
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| // credentialsManager: this.config.createCredentialsManager(request), | ||
| // hasPermission: this.config.hasPermission, | ||
| createContext: | ||
| createContext && | ||
| ((credentials: TCredentials | null | undefined) => | ||
| createContext(request, credentials)), | ||
| maxSubscriptionsPerConnection: this.config | ||
| .maxSubscriptionsPerConnection, | ||
| createValidationRules: this.config.createValidationRules, | ||
| createLogger: this.config.createLogger || defaultCreateLogger, | ||
| }, | ||
| wsServer, | ||
| ); | ||
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| this.server.on('connection', this.handleConnection); | ||
| } | ||
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| handleConnection = (socket: ws, req: IncomingMessage) => { | ||
| this.log('debug', 'new socket connection'); | ||
|
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| const request = Object.create((express as any).request); | ||
| Object.assign(request, req); | ||
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| const { createContext } = this.config; | ||
|
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| // eslint-disable-next-line no-new | ||
| new AuthorizedSocketConnection(socket, { | ||
| schema: this.config.schema, | ||
| subscriber: this.config.subscriber, | ||
| credentialsManager: this.config.createCredentialsManager(request), | ||
| hasPermission: this.config.hasPermission, | ||
| createContext: | ||
| createContext && | ||
| ((credentials: TCredentials | null | undefined) => | ||
| createContext(request, credentials)), | ||
| maxSubscriptionsPerConnection: this.config.maxSubscriptionsPerConnection, | ||
| createValidationRules: this.config.createValidationRules, | ||
| createLogger: this.config.createLogger || defaultCreateLogger, | ||
| }); | ||
| }; | ||
|
|
||
| async close() { | ||
| // @ts-ignore | ||
| await promisify((...args) => this.io.close(...args))(); | ||
| } | ||
| } |
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