// async version of ExecUtils.RetryUntilTrue
private static async ValueTask RetryUntilTrue(Func <CancellationToken, ValueTask <bool> > action,
TimeSpan?timeOut = null, CancellationToken token = default)
{
var i = 0;
var firstAttempt = DateTime.UtcNow;
while (timeOut == null || DateTime.UtcNow - firstAttempt < timeOut.Value)
{
token.ThrowIfCancellationRequested();
i++;
if (await action(token).ConfigureAwait(false))
{
return;
}
await Task.Delay(ExecUtils.CalculateFullJitterBackOffDelay(i)).ConfigureAwait(false);
}
throw new TimeoutException($"Exceeded timeout of {timeOut.Value}");
}
/// <summary> /// Sleep using AWS's recommended Exponential BackOff with Full Jitter from: /// https://aws.amazon.com/blogs/architecture/exponential-backoff-and-jitter/ /// </summary> /// <param name="retriesAttempted"></param> internal static void SleepBackOffMultiplier(this int retriesAttempted) => Thread.Sleep(ExecUtils.CalculateFullJitterBackOffDelay(retriesAttempted));
internal static async Task SleepBackOffMultiplierAsync(this int retriesAttempted, CancellationToken token = default) => await Task.Delay(ExecUtils.CalculateFullJitterBackOffDelay(retriesAttempted), token);