Throttler

[flow/Throttler]

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Throttles the received signal, forwarding only count number of signals in delay milliseconds. Reports internal buffer size via buffer size. Example:

1. delay set to 3000, count set to 1

2. A@1 received via data

3. B@2 received via data a second later

4. B@2 sent immediately via data

5. C@3 received via data

6. 1@3 sent via buffer size

7. C@3 sent via data a second later

8. 0@3 sent via buffer size

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Keywords: throttle, rate limit,

Input ports

• data: any

  Receives data to be throttled / rate limited.

• delay: number

  Receives the length of the time window in milliseconds, in which to limit the number of signals. Can be set as parameter.

• count: number

  Receives the maximum number of signals to be forwarded in the specified time window. Can be set as parameter.

Output ports

• data: any

  Forwards the signals received via data, throttled.

• buffer size: number

  Sends the current size of the throttler's internal buffer. Only sent when the size changes. Used for raising errors related to exceeding allowed buffer size.