@remote.it/core/src/LinuxSystemService.ts

Core remote.it JavasScript/TypeScript library

import debug from 'debug'
import { GenericSystemService } from './GenericSystemService'
import { Environment } from './Environment'
import { Systemd } from './Systemd'
import { SystemdUnitFile } from './SystemdUnitFile'

const d = debug('remoteit:MacSystemService')

interface SystemdUnit {
  Unit: {
    Description: string
    Documentation: string
    After: string
  }
  Service: {
    Environment?: string
    Type?: string
    User?: string
    ExecStart: string
    Restart: string
  }
  Install: {
    WantedBy: string
  }
}

export class LinuxSystemService extends GenericSystemService {
  private unitFile: SystemdUnitFile<SystemdUnit>
  private systemd: Systemd

  constructor(public config: string = Environment.configPath) {
    super(config)
    this.unitFile = new SystemdUnitFile<SystemdUnit>(
      Environment.systemdUnitFilePath
    )
    this.systemd = new Systemd()
  }

  async install() {
    d('install linux system service')

    // if (this.exists) this.uninstall()
    this.createUnitFile()
    this.systemd.enable()

    d('linux system service installed:', this.command)

    return this
  }

  async start() {
    d('start linux system service')

    if (!this.exists) this.install()
    this.systemd.start()

    return this
  }

  async stop() {
    d('stop system service')

    this.systemd.stop()

    return this
  }

  async uninstall() {
    d('uinstall system service')

    try {
      this.stop()
      this.systemd.disable()
      this.unitFile.remove()
      this.systemd.reboot()
    } catch (error) {
      console.error('uninstall error', error)
    }

    return this
  }

  private createUnitFile() {
    this.unitFile.write({
      Unit: {
        After: 'network.target',
        Description: 'remote.it system service',
        Documentation: 'https://docs.remote.it',
        // Wants=network.target
      },
      Service: {
        // Environment:'',
        ExecStart: this.command,
        // ExecStop=/sbin/dhcpcd -x
        // PIDFile=/run/dhcpcd.pid
        Restart: 'on-failure',
        Type: 'simple', // 'forking'
        User: Environment.username,
      },
      Install: {
        // Alias=dhcpcd5.service
        WantedBy: 'multi-user.target',
      },
    })
  }

  get exists() {
    return this.unitFile.exists
  }
}