public final class RestartWithBackoffSource<T> extends GraphStage<SourceShape<T>>Wrap the given
Sourcethat will restart it when it fails using an exponential backoff.
Sourcewill not emit a complete or failure as long as maxRestarts is not reached, since the completion or failure of the wrapped
Sourceis handled by restarting it. The wrapped
Sourcecan however be cancelled by cancelling this
Source. When that happens, the wrapped
Source, if currently running will be cancelled, and it will not be restarted. This can be triggered simply by the downstream cancelling, or externally by introducing a
KillSwitchright after this
Sourcein the graph.
This uses the same exponential backoff algorithm as
param: minBackoff minimum (initial) duration until the child actor will started again, if it is terminated param: maxBackoff the exponential back-off is capped to this duration param: randomFactor after calculation of the exponential back-off an additional random delay based on this factor is added, e.g.
0.2adds up to
20%delay. In order to skip this additional delay pass in
0. param: maxRestarts the amount of restarts is capped to this amount within a time frame of minBackoff. Passing
0will cause no restarts and a negative number will not cap the amount of restarts. param: sourceFactory A factory for producing the
All Methods Instance Methods Concrete Methods Modifier and Type Method Description
shape()The shape of a graph is all that is externally visible: its inlets and outlets.
Methods inherited from class akka.stream.stage.GraphStageWithMaterializedValue
createLogicAndMaterializedValue, initialAttributes, traversalBuilder, withAttributes
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
public RestartWithBackoffLogic<SourceShape<T>> createLogic(Attributes inheritedAttributes)