object RetryFlow
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- RetryFlow.scala
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- RetryFlow
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- def withBackoff[In, Out, Mat](minBackoff: Duration, maxBackoff: Duration, randomFactor: Double, maxRetries: Int, flow: Flow[In, Out, Mat], decideRetry: Function2[In, Out, Optional[In]]): Flow[In, Out, Mat]
Allows retrying individual elements in the stream with an exponential backoff.
Allows retrying individual elements in the stream with an exponential backoff.
The retry condition is controlled by the
decideRetryfunction. It takes the originally emitted element and the response emitted byflow, and may return a request to be retried.The implementation of the
RetryFlowrequires thatflowfollows one-in-one-out semantics, the Flow may not filter elements, nor emit more than one element per incoming element. TheRetryFlowwill fail if two elements are emitted from theflow, it will be stuck "forever" if nothing is emitted. Just one element will be emitted into theflowat any time. Theflowneeds to emit an element before the next will be emitted to it.- minBackoff
minimum duration to backoff between issuing retries
- maxBackoff
maximum duration to backoff between issuing retries
- randomFactor
adds jitter to the retry delay. Use 0 for no jitter
- flow
a flow to retry elements from
- decideRetry
retry condition decision function
- def withBackoffAndContext[In, InCtx, Out, OutCtx, Mat](minBackoff: Duration, maxBackoff: Duration, randomFactor: Double, maxRetries: Int, flow: FlowWithContext[In, InCtx, Out, OutCtx, Mat], decideRetry: Function2[Pair[In, InCtx], Pair[Out, OutCtx], Optional[Pair[In, InCtx]]]): FlowWithContext[In, InCtx, Out, OutCtx, Mat]
Allows retrying individual elements in the stream with an exponential backoff.
Allows retrying individual elements in the stream with an exponential backoff.
The retry condition is controlled by the
decideRetryfunction. It takes the originally emitted element with its context, and the response emitted byflow, and may return a request to be retried.The implementation of the
RetryFlowrequires thatflowfollows one-in-one-out semantics, the FlowWithContext may not filter elements, nor emit more than one element per incoming element. TheRetryFlowwill fail if two elements are emitted from theflow, it will be stuck "forever" if nothing is emitted. Just one element will be emitted into theflowat any time. Theflowneeds to emit an element before the next will be emitted to it.The wrapped
flowanddecideRetrytake the additional context parameters which can be a context, or used to control retrying with other information.- minBackoff
minimum duration to backoff between issuing retries
- maxBackoff
maximum duration to backoff between issuing retries
- randomFactor
adds jitter to the retry delay. Use 0 for no jitter
- flow
a flow to retry elements from
- decideRetry
retry condition decision function