RestartSource
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package scaladsl
Wrap the given Source with a Source that will restart it when it fails or complete using an exponential backoff.
Wrap the given Source with a Source that will restart it when it fails or complete using an exponential backoff.
This Source will never emit a complete or failure, since the completion or failure of the wrapped Source is always handled by restarting it. The wrapped Source can 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 KillSwitch right after this Source in the graph.
This uses the same exponential backoff algorithm as akka.pattern.Backoff.
minimum (initial) duration until the child actor will started again, if it is terminated
the exponential back-off is capped to this duration
after calculation of the exponential back-off an additional
random delay based on this factor is added, e.g. 0.2 adds up to 20% delay.
In order to skip this additional delay pass in 0.
A factory for producing the Source to wrap.
A RestartSource wraps a Source that gets restarted when it completes or fails.
They are useful for graphs that need to run for longer than the Source can necessarily guarantee it will, for example, for Source streams that depend on a remote server that may crash or become partitioned. The RestartSource ensures that the graph can continue running while the Source restarts.