TimeSpan ComputeNextDelay(int attempt, DateTime firstAttempt, Exception failure)
{
TimeSpan nextDelay = TimeSpan.Zero;
try
{
if (retryOptions.Handle(failure))
{
DateTime retryExpiration = (retryOptions.RetryTimeout != TimeSpan.MaxValue)
? firstAttempt.Add(retryOptions.RetryTimeout)
: DateTime.MaxValue;
if (context.CurrentUtcDateTime < retryExpiration)
{
double nextDelayInMilliSeconds = retryOptions.FirstRetryInterval.TotalMilliseconds *
Math.Pow(retryOptions.BackoffCoefficient, attempt);
nextDelay = (nextDelayInMilliSeconds < retryOptions.MaxRetryInterval.TotalMilliseconds)
? TimeSpan.FromMilliseconds(nextDelayInMilliSeconds)
: retryOptions.MaxRetryInterval;
}
}
}
catch (Exception e)
{
// Catch any exceptions during ComputeNextDelay so we don't override original error with new error
TraceHelper.TraceExceptionInstance(TraceEventType.Error, context.OrchestrationInstance, e);
}
return(nextDelay);
}
