Given a function, returns an internally retrying Task. The first attempt will be made immediately, each subsequent attempt will be made immediately if the previous attempt failed.

If attempts are exhausted the returned Task is simply the result of invoking attempt.

Declaration

public static Task<T> Retry<T>(Func<Task<T>> attempt, int attempts)

Parameters

Type	Name	Description
Func<Task<T>>	attempt	TBD
int	attempts	TBD

Returns

Type	Description
Task<T>

Type Parameters

Name	Description
T

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Retry<T>(Func<Task<T>>, int, Func<int, Option<TimeSpan>>, IScheduler)

Given a function, returns an internally retrying Task. The first attempt will be made immediately, each subsequent attempt will be made after the 'delay' return by `delayFunction`(the input next attempt count start from 1). Returns None for no delay. A scheduler (eg Context.System.Scheduler) must be provided to delay each retry. You could provide a function to generate the next delay duration after first attempt, this function should never return `null`, otherwise an InvalidOperationException will be through.

If attempts are exhausted the returned Task is simply the result of invoking attempt.

Declaration

public static Task<T> Retry<T>(Func<Task<T>> attempt, int attempts, Func<int, Option<TimeSpan>> delayFunction, IScheduler scheduler)

Parameters

Type	Name	Description
Func<Task<T>>	attempt	TBD
int	attempts	TBD
Func<int, Option<TimeSpan>>	delayFunction	TBD
IScheduler	scheduler	The scheduler instance to use.

Returns

Type	Description
Task<T>

Type Parameters

Name	Description
T

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Retry<T>(Func<Task<T>>, int, TimeSpan, IScheduler)

Given a function, returns an internally retrying Task. The first attempt will be made immediately, each subsequent attempt will be made after 'delay'. A scheduler (eg Context.System.Scheduler) must be provided to delay each retry.

If attempts are exhausted the returned future is simply the result of invoking attempt.

Declaration

public static Task<T> Retry<T>(Func<Task<T>> attempt, int attempts, TimeSpan delay, IScheduler scheduler)

Parameters

Type	Name	Description
Func<Task<T>>	attempt	TBD
int	attempts	TBD
TimeSpan	delay	TBD
IScheduler	scheduler	The scheduler instance to use.

Returns

Type	Description
Task<T>

Type Parameters

Name	Description
T

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Retry<T>(Func<Task<T>>, int, TimeSpan, TimeSpan, int, IScheduler)

Given a function, returns an internally retrying Task. The first attempt will be made immediately, each subsequent attempt will be made with a backoff time, if the previous attempt failed.

If attempts are exhausted the returned Task is simply the result of invoking attempt.

Declaration

public static Task<T> Retry<T>(Func<Task<T>> attempt, int attempts, TimeSpan minBackoff, TimeSpan maxBackoff, int randomFactor, IScheduler scheduler)

Parameters

Type	Name	Description
Func<Task<T>>	attempt	TBD
int	attempts	TBD
TimeSpan	minBackoff	minimum (initial) duration until the child actor will started again, if it is terminated.
TimeSpan	maxBackoff	the exponential back-off is capped to this duration.
int	randomFactor	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`.
IScheduler	scheduler	The scheduler instance to use.

Returns

Type	Description
Task<T>

Type Parameters

Name	Description
T