This solve my problem, but seems strange:
object SpeedViolation {
var state: Option[Double] = None
def apply(maxSpeed: Double) = {
state = Some(maxSpeed)
Flow[(CarStatus, Option[Double])].map((params) => {
val (carStatus, speed) = params
state = speed orElse state
carStatus.speed > state.get
})
}
}
The flow input is a tuple, the element I want process and a Option
parameter. What do you think?
On Monday, July 27, 2015 at 9:24:34 AM UTC-3, Matheus Lima wrote:
>
> How can I create a dynamic flow? I'm developing a stream processing
> application and I have a specific stage that I need perform a calculation
> over input considering a parameter. And I need change this parameter
> dynamically. For example:
> case class CarStatus(position: Position, speed: Double)
> Flow[CarStatus].map(_.speed > 80)
> How can I transform 80 in a dynamic parameter?
> Thank you.
>
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