/// <summary>
/// Modifies the attempts enumerable using the specified <see cref="IRetryStrategy"/>.
/// </summary>
public static IEnumerable <Lazy <T> > UsingStrategy <T>(this IEnumerable <Lazy <T> > lazyAttempts,
IRetryStrategy strategy, CancellationToken cancellationToken) where T : Attempt
{
if (strategy == null)
{
throw new ArgumentNullException(nameof(strategy));
}
if (strategy.AttemptLimit > 0)
{
lazyAttempts = lazyAttempts.Take(strategy.AttemptLimit.Value);
}
if (strategy.MaxDuration > TimeSpan.Zero)
{
lazyAttempts = lazyAttempts.TakeForDuration(strategy.MaxDuration.Value, cancellationToken);
}
if (strategy.FailureDelay > TimeSpan.Zero || strategy.FailureDelayAdjustment != null)
{
lazyAttempts = lazyAttempts.DelayWhereFailed(strategy.FailureDelay, strategy.FailureDelayAdjustment,
cancellationToken);
}
if (strategy.ThrowPredicate != null)
{
lazyAttempts = lazyAttempts.ThrowWhere(a => strategy.ThrowPredicate(a.Exception));
}
if (strategy.CatchPredicate != null)
{
lazyAttempts = lazyAttempts.CatchWhere(a => strategy.CatchPredicate(a.Exception));
}
return(lazyAttempts);
}
