# tap

Pass events downstream only when the tap is open. tap() is evaluated at startup and then every interval seconds.

Required:

• tap: Function that returns true when the tap is open.

Optional:

• interval: Re-evaluation interval in seconds (default: 60)

pipeline:
  tap:
    config:
      tap: !!js/function >-
        function() {
          const hour = new Date().getHours()
          return hour >= 9 && hour <= 17
        }
      interval: 300