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Introduced backpressure timeout (#20131) stage.

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This commit is contained in:
Robert Budźko 2016-04-19 16:31:17 +02:00
parent 2420b96bc6
commit 8534adf603
13 changed files with 550 additions and 141 deletions
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26
akka-stream/src/main/scala/akka/stream/scaladsl/Flow.scala
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@ -1438,8 +1438,9 @@ trait FlowOps[+Out, +Mat] {
def completionTimeout(timeout: FiniteDuration): Repr[Out] = via(new Timers.Completion[Out](timeout))
/**
* If the time between two processed elements exceed the provided timeout, the stream is failed
* with a [[scala.concurrent.TimeoutException]].
* If the time between two processed elements exceeds the provided timeout, the stream is failed
* with a [[scala.concurrent.TimeoutException]]. The timeout is checked periodically,
* so the resolution of the check is one period (equals to timeout value).
*
* '''Emits when''' upstream emits an element
*
@ -1452,7 +1453,22 @@ trait FlowOps[+Out, +Mat] {
def idleTimeout(timeout: FiniteDuration): Repr[Out] = via(new Timers.Idle[Out](timeout))
/**
* Injects additional elements if the upstream does not emit for a configured amount of time. In other words, this
* If the time between the emission of an element and the following downstream demand exceeds the provided timeout,
* the stream is failed with a [[scala.concurrent.TimeoutException]]. The timeout is checked periodically,
* so the resolution of the check is one period (equals to timeout value).
*
* '''Emits when''' upstream emits an element
*
* '''Backpressures when''' downstream backpressures
*
* '''Completes when''' upstream completes or fails if timeout elapses between element emission and downstream demand.
*
* '''Cancels when''' downstream cancels
*/
def backpressureTimeout(timeout: FiniteDuration): Repr[Out] = via(new Timers.BackpressureTimeout[Out](timeout))
/**
* Injects additional elements if upstream does not emit for a configured amount of time. In other words, this
* stage attempts to maintains a base rate of emitted elements towards the downstream.
*
* If the downstream backpressures then no element is injected until downstream demand arrives. Injected elements
@ -1551,9 +1567,9 @@ trait FlowOps[+Out, +Mat] {
/**
* Delays the initial element by the specified duration.
*
* '''Emits when''' upstream emits an element if the initial delay already elapsed
* '''Emits when''' upstream emits an element if the initial delay is already elapsed
*
* '''Backpressures when''' downstream backpressures or initial delay not yet elapsed
* '''Backpressures when''' downstream backpressures or initial delay is not yet elapsed
*
* '''Completes when''' upstream completes
*