jspurefix/src/sample/tcp/skeleton/skeleton-session.ts

pure node js fix engine

import { AsciiSession } from '../../../transport/ascii'
import { MsgView } from '../../../buffer'
import { IJsFixLogger, IJsFixConfig } from '../../../config'

export class SkeletonSession extends AsciiSession {
  private readonly logger: IJsFixLogger
  private readonly fixLog: IJsFixLogger
  constructor (public readonly config: IJsFixConfig,
               public readonly logoutSeconds: number = 45) {
    super(config)
    this.logReceivedMsgs = true
    this.fixLog = config.logFactory.plain(`jsfix.${config.description.application.name}.txt`)
    this.logger = config.logFactory.logger(`${this.me}`)
  }

  protected onApplicationMsg (msgType: string, view: MsgView): void {
    // dispatch messages
    switch (msgType) {
      default: {
        this.logger.info(`received message type ${msgType}`)
        break
      }
    }
  }

  // use msgType for example to persist only trade capture messages to database
  protected onDecoded (msgType: string, txt: string): void {
    this.fixLog.info(txt)
  }

  // no delimiter substitution on transmit messages
  protected onEncoded (msgType: string, txt: string): void {
    this.fixLog.info(AsciiSession.asPiped(txt))
  }

  protected onLogon (view: MsgView, user: string, password: string): boolean {
    this.logger.info(`peer logs in user ${user}`)
    return true
  }

  protected onReady (view: MsgView): void {
    this.logger.info('onReady')
    const logoutSeconds = this.logoutSeconds
    const t = this.config.description.application.type
    switch (t) {
      case 'initiator': {
        this.logger.info(`will logout after ${logoutSeconds}`)
        setTimeout(() => {
          this.done()
        }, logoutSeconds * 1000)
        break
      }

      case 'acceptor': {
        this.logger.info(`acceptor is ready for requests`)
        break
      }

      default: {
        this.logger.warning(`unknown type ${t}`)
        break
      }
    }
  }

  protected onStopped (): void {
    this.logger.info('stopped')
  }
}