@loopeco/socketio/src/socketio.sequence.ts

A enhanced LoopBack's WebSocket server based on socket.io

import {Context, ControllerClass, CoreBindings, inject} from '@loopback/core';
import {SocketIoBindings} from './keys';
import {SocketIoInvokeMethod, SocketIoRejectMethod, SocketIoSendMethod, SocketIoSequence} from './types';

export class DefaultSocketIoSequence implements SocketIoSequence {
  constructor(
    @inject.context() protected context: Context,
    @inject(CoreBindings.CONTROLLER_CURRENT)
    protected controller: ControllerClass,
    @inject(SocketIoBindings.INVOKE_METHOD)
    protected invoke: SocketIoInvokeMethod,
    @inject(SocketIoBindings.SEND_METHOD)
    protected send: SocketIoSendMethod,
    @inject(SocketIoBindings.REJECT_METHOD)
    protected reject: SocketIoRejectMethod,
  ) {}

  async handle(methodName: string, args: unknown[], done: Function) {
    try {
      const result = await this.invoke(this.context, this.controller, methodName, args);
      await this.send(done, result);
    } catch (err) {
      await this.reject(done, err);
    }
  }
}