All Known Implementing Classes:

RetrySupport$
```
public interface RetrySupport
```
This trait provides the retry utility function

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`<T> scala.concurrent.Future<T>`	`retry(scala.Function0<scala.concurrent.Future<T>> attempt, int attempts, scala.concurrent.duration.FiniteDuration minBackoff, scala.concurrent.duration.FiniteDuration maxBackoff, double randomFactor, scala.concurrent.ExecutionContext ec, Scheduler scheduler)`	Given a function from Unit to Future, returns an internally retrying Future.
`<T> scala.concurrent.Future<T>`	`retry(scala.Function0<scala.concurrent.Future<T>> attempt, int attempts, scala.concurrent.duration.FiniteDuration delay, scala.concurrent.ExecutionContext ec, Scheduler scheduler)`	Given a function from Unit to Future, returns an internally retrying Future.
`<T> scala.concurrent.Future<T>`	`retry(scala.Function0<scala.concurrent.Future<T>> attempt, int attempts, scala.concurrent.ExecutionContext ec)`	Given a function from Unit to Future, returns an internally retrying Future.
`<T> scala.concurrent.Future<T>`	`retry(scala.Function0<scala.concurrent.Future<T>> attempt, int attempts, scala.Function1<java.lang.Object,scala.Option<scala.concurrent.duration.FiniteDuration>> delayFunction, scala.concurrent.ExecutionContext ec, Scheduler scheduler)`	Given a function from Unit to Future, returns an internally retrying Future.
`<T> scala.concurrent.Future<T>`	`retry(scala.Function0<scala.concurrent.Future<T>> attempt, scala.Function2<T,java.lang.Throwable,java.lang.Object> shouldRetry, int attempts, scala.concurrent.duration.FiniteDuration minBackoff, scala.concurrent.duration.FiniteDuration maxBackoff, double randomFactor, scala.concurrent.ExecutionContext ec, Scheduler scheduler)`	Given a function from Unit to Future, returns an internally retrying Future.
`<T> scala.concurrent.Future<T>`	`retry(scala.Function0<scala.concurrent.Future<T>> attempt, scala.Function2<T,java.lang.Throwable,java.lang.Object> shouldRetry, int attempts, scala.concurrent.duration.FiniteDuration delay, scala.concurrent.ExecutionContext ec, Scheduler scheduler)`	Given a function from Unit to Future, returns an internally retrying Future.
`<T> scala.concurrent.Future<T>`	`retry(scala.Function0<scala.concurrent.Future<T>> attempt, scala.Function2<T,java.lang.Throwable,java.lang.Object> shouldRetry, int attempts, scala.concurrent.ExecutionContext ec)`	Given a function from Unit to Future, returns an internally retrying Future.
`<T> scala.concurrent.Future<T>`	`retry(scala.Function0<scala.concurrent.Future<T>> attempt, scala.Function2<T,java.lang.Throwable,java.lang.Object> shouldRetry, int attempts, scala.Function1<java.lang.Object,scala.Option<scala.concurrent.duration.FiniteDuration>> delayFunction, scala.concurrent.ExecutionContext ec, Scheduler scheduler)`	Given a function from Unit to Future, returns an internally retrying Future.

- Method Detail
  - retry
```
<T> scala.concurrent.Future<T> retry(scala.Function0<scala.concurrent.Future<T>> attempt,
                                     int attempts,
                                     scala.concurrent.ExecutionContext ec)
```
    Given a function from Unit to Future, returns an internally retrying Future. 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 future is simply the result of invoking attempt. Note that the attempt function will be invoked on the given execution context for subsequent tries and therefore must be thread safe (i.e. not touch unsafe mutable state).
    Example usage:
    
    def possiblyFailing(): Future[Something] = ??? val withRetry: Future[Something] = retry(attempt = possiblyFailing, attempts = 10)
  - retry
```
<T> scala.concurrent.Future<T> retry(scala.Function0<scala.concurrent.Future<T>> attempt,
                                     scala.Function2<T,java.lang.Throwable,java.lang.Object> shouldRetry,
                                     int attempts,
                                     scala.concurrent.ExecutionContext ec)
```
    Given a function from Unit to Future, returns an internally retrying Future.
    When the future is completed, the shouldRetry predicate is always been invoked with the result (or null if none) and the exception (or null if none). If the shouldRetry predicate returns true, then a new attempt is made, 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.
    If attempts are exhausted the returned future is simply the result of invoking attempt. Note that the attempt function will be invoked on the given execution context for subsequent tries and therefore must be thread safe (i.e. not touch unsafe mutable state).
    Example usage:
    
    def possiblyFailing(): Future[Something] = ??? val shouldRetry: (Something, Throwable) => throwable ne null val withRetry: Future[Something] = retry(attempt = possiblyFailing, shouldRetry, attempts = 10)
    Parameters:
    
    attempt - the function to be attempted
    
    shouldRetry - the predicate to determine if the attempt should be retried
    
    attempts - the maximum number of attempts
    
    ec - the execution context
    
    Returns:
    
    the result future which maybe retried
    
    Since:
    
    1.1.0
  - retry
```
<T> scala.concurrent.Future<T> retry(scala.Function0<scala.concurrent.Future<T>> attempt,
                                     int attempts,
                                     scala.concurrent.duration.FiniteDuration minBackoff,
                                     scala.concurrent.duration.FiniteDuration maxBackoff,
                                     double randomFactor,
                                     scala.concurrent.ExecutionContext ec,
                                     Scheduler scheduler)
```
    Given a function from Unit to Future, returns an internally retrying Future. 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 future is simply the result of invoking attempt. Note that the attempt function will be invoked on the given execution context for subsequent tries and therefore must be thread safe (i.e. not touch unsafe mutable state).
    Example usage:
    
    protected val sendAndReceive: HttpRequest => Future[HttpResponse] private val sendReceiveRetry: HttpRequest => Future[HttpResponse] = (req: HttpRequest) => retry[HttpResponse]( attempt = () => sendAndReceive(req), attempts = 10, minBackoff = 1.seconds, maxBackoff = 2.seconds, randomFactor = 0.5 )
    Parameters:
    
    minBackoff - minimum (initial) duration until the child actor will started again, if it is terminated
    
    maxBackoff - the exponential back-off is capped to this duration
    
    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.
  - retry
```
<T> scala.concurrent.Future<T> retry(scala.Function0<scala.concurrent.Future<T>> attempt,
                                     scala.Function2<T,java.lang.Throwable,java.lang.Object> shouldRetry,
                                     int attempts,
                                     scala.concurrent.duration.FiniteDuration minBackoff,
                                     scala.concurrent.duration.FiniteDuration maxBackoff,
                                     double randomFactor,
                                     scala.concurrent.ExecutionContext ec,
                                     Scheduler scheduler)
```
    Given a function from Unit to Future, returns an internally retrying Future.
    When the future is completed, the shouldRetry predicate is always been invoked with the result (or null if none) and the exception (or null if none). If the shouldRetry predicate returns true, then a new attempt is made, 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.
    If attempts are exhausted the returned future is simply the result of invoking attempt. Note that the attempt function will be invoked on the given execution context for subsequent tries and therefore must be thread safe (i.e. not touch unsafe mutable state).
    Example usage:
    
    protected val sendAndReceive: HttpRequest => Future[HttpResponse] protected val shouldRetry: (HttpResponse, Throwable) => throwable ne null private val sendReceiveRetry: HttpRequest => Future[HttpResponse] = (req: HttpRequest) => retry[HttpResponse]( attempt = () => sendAndReceive(req), shouldRetry, attempts = 10, minBackoff = 1.seconds, maxBackoff = 2.seconds, randomFactor = 0.5 )
    Parameters:
    
    attempt - the function to be attempted
    
    shouldRetry - the predicate to determine if the attempt should be retried
    
    attempts - the maximum number of attempts
    
    minBackoff - minimum (initial) duration until the child actor will started again, if it is terminated
    
    maxBackoff - the exponential back-off is capped to this duration
    
    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.
    
    ec - the execution context
    
    scheduler - the scheduler for scheduling a delay
    
    Returns:
    
    the result future which maybe retried
    
    Since:
    
    1.1.0
  - retry
```
<T> scala.concurrent.Future<T> retry(scala.Function0<scala.concurrent.Future<T>> attempt,
                                     int attempts,
                                     scala.concurrent.duration.FiniteDuration delay,
                                     scala.concurrent.ExecutionContext ec,
                                     Scheduler scheduler)
```
    Given a function from Unit to Future, returns an internally retrying Future. 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. Note that the attempt function will be invoked on the given execution context for subsequent tries and therefore must be thread safe (i.e. not touch unsafe mutable state).
    Example usage:
    
    protected val sendAndReceive: HttpRequest => Future[HttpResponse] private val sendReceiveRetry: HttpRequest => Future[HttpResponse] = (req: HttpRequest) => retry[HttpResponse]( attempt = () => sendAndReceive(req), attempts = 10, delay = 2.seconds )
  - retry
```
<T> scala.concurrent.Future<T> retry(scala.Function0<scala.concurrent.Future<T>> attempt,
                                     scala.Function2<T,java.lang.Throwable,java.lang.Object> shouldRetry,
                                     int attempts,
                                     scala.concurrent.duration.FiniteDuration delay,
                                     scala.concurrent.ExecutionContext ec,
                                     Scheduler scheduler)
```
    Given a function from Unit to Future, returns an internally retrying Future.
    When the future is completed, the shouldRetry predicate is always been invoked with the result (or null if none) and the exception (or null if none). If the shouldRetry predicate returns true, then a new attempt is made, 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.
    If attempts are exhausted the returned future is simply the result of invoking attempt. Note that the attempt function will be invoked on the given execution context for subsequent tries and therefore must be thread safe (i.e. not touch unsafe mutable state).
    Example usage:
    
    protected val sendAndReceive: HttpRequest => Future[HttpResponse] protected val shouldRetry: (HttpResponse, Throwable) => throwable ne null private val sendReceiveRetry: HttpRequest => Future[HttpResponse] = (req: HttpRequest) => retry[HttpResponse]( attempt = () => sendAndReceive(req), shouldRetry, attempts = 10, delay = 2.seconds )
    Parameters:
    
    attempt - the function to be attempted
    
    shouldRetry - the predicate to determine if the attempt should be retried
    
    attempts - the maximum number of attempts
    
    delay - the delay duration
    
    ec - the execution context
    
    scheduler - the scheduler for scheduling a delay
    
    Returns:
    
    the result future which maybe retried
    
    Since:
    
    1.1.0
  - retry
```
<T> scala.concurrent.Future<T> retry(scala.Function0<scala.concurrent.Future<T>> attempt,
                                     int attempts,
                                     scala.Function1<java.lang.Object,scala.Option<scala.concurrent.duration.FiniteDuration>> delayFunction,
                                     scala.concurrent.ExecutionContext ec,
                                     Scheduler scheduler)
```
    Given a function from Unit to Future, returns an internally retrying Future. 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 IllegalArgumentException will be through.
    If attempts are exhausted the returned future is simply the result of invoking attempt. Note that the attempt function will be invoked on the given execution context for subsequent tries and therefore must be thread safe (i.e. not touch unsafe mutable state).
    Example usage:
    //retry with back off
    protected val sendAndReceive: HttpRequest => Future[HttpResponse] private val sendReceiveRetry: HttpRequest => Future[HttpResponse] = (req: HttpRequest) => retry[HttpResponse]( attempt = () => sendAndReceive(req), attempts = 10, delayFunction = attempted => Option(2.seconds * attempted) )
  - retry
```
<T> scala.concurrent.Future<T> retry(scala.Function0<scala.concurrent.Future<T>> attempt,
                                     scala.Function2<T,java.lang.Throwable,java.lang.Object> shouldRetry,
                                     int attempts,
                                     scala.Function1<java.lang.Object,scala.Option<scala.concurrent.duration.FiniteDuration>> delayFunction,
                                     scala.concurrent.ExecutionContext ec,
                                     Scheduler scheduler)
```
    Given a function from Unit to Future, returns an internally retrying Future.
    When the future is completed, the shouldRetry predicate is always been invoked with the result (or null if none) and the exception (or null if none). If the shouldRetry predicate returns true, then a new attempt is made, 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 IllegalArgumentException will be through.
    If attempts are exhausted the returned future is simply the result of invoking attempt. Note that the attempt function will be invoked on the given execution context for subsequent tries and therefore must be thread safe (i.e. not touch unsafe mutable state).
    Example usage:
    //retry with back off
    protected val sendAndReceive: HttpRequest => Future[HttpResponse] protected val shouldRetry: (HttpResponse, Throwable) => throwable ne null private val sendReceiveRetry: HttpRequest => Future[HttpResponse] = (req: HttpRequest) => retry[HttpResponse]( attempt = () => sendAndReceive(req), shouldRetry, attempts = 10, delayFunction = attempted => Option(2.seconds * attempted) )
    Parameters:
    
    attempt - the function to be attempted
    
    shouldRetry - the predicate to determine if the attempt should be retried
    
    attempts - the maximum number of attempts
    
    delayFunction - the function to generate the next delay duration, None for no delay
    
    ec - the execution context
    
    scheduler - the scheduler for scheduling a delay
    
    Returns:
    
    the result future which maybe retried
    
    Since:
    
    1.1.0

Interface RetrySupport

Method Summary

Method Detail

retry

retry

retry

retry

retry

retry

retry

retry