RestartSink.withBackoff
Wrap the given Sink
Sink
with a Sink
Sink
that will restart it when it fails or complete using an exponential backoff.
Signature
RestartSink.withBackoff
RestartSink.withBackoff
Description
Wrap the given Sink
Sink
with a Sink
Sink
that will restart it when it completes or fails using exponential backoff. The backoff resets back to minBackoff
if there hasn’t been a restart within maxRestartsWithin
(which defaults to minBackoff
).
This Sink
Sink
will not cancel as long as maxRestarts is not reached, since cancellation by the wrapped Sink
Sink
is handled by restarting it. The wrapped Sink
Sink
can however be completed by feeding a completion or error into this Sink
Sink
. When that happens, the Sink
Sink
, if currently running, will terminate and will not be restarted. This can be triggered simply by the upstream completing, or externally by introducing a KillSwitch right before this Sink
Sink
in the graph.
The restart process is inherently lossy, since there is no coordination between cancelling and the sending of messages. When the wrapped Sink
Sink
does cancel, this Sink
Sink
will backpressure, however any elements already sent may have been lost.
This uses the same exponential backoff algorithm as BackoffOpts
BackoffOpts
.
See also:
- RestartSource.withBackoff
- RestartSource.onFailuresWithBackoff
- RestartFlow.onFailuresWithBackoff
- RestartFlow.withBackoff
Reactive Streams semantics
backpressures during backoff and when the wrapped sink backpressures
completes when upstream completes or when maxRestarts
are reached within the given time limit