public static TimeSpan NextTimeSpan(this SafeRandom random, TimeSpan timeSpan)
{
if (timeSpan <= TimeSpan.Zero)
{
throw new ArgumentOutOfRangeException("timeSpan", timeSpan, "SafeRandom.NextTimeSpan timeSpan must be a positive number.");
}
double ticksD = ((double)timeSpan.Ticks) * random.NextDouble();
long ticks = checked ((long)ticksD);
return(TimeSpan.FromTicks(ticks));
}
public static TimeSpan NextTimeSpan(this SafeRandom random, TimeSpan minValue, TimeSpan maxValue)
{
if (minValue <= TimeSpan.Zero)
{
throw new ArgumentOutOfRangeException("minValue", minValue, "SafeRandom.NextTimeSpan minValue must be a positive number.");
}
if (minValue >= maxValue)
{
throw new ArgumentOutOfRangeException("minValue", minValue, "SafeRandom.NextTimeSpan minValue must be greater than maxValue.");
}
var span = maxValue - minValue;
return(minValue + random.NextTimeSpan(span));
}
public ExponentialBackoff(TimeSpan minDelay, TimeSpan maxDelay, TimeSpan step)
{
if (minDelay <= TimeSpan.Zero)
{
throw new ArgumentOutOfRangeException("minDelay", minDelay, "ExponentialBackoff min delay must be a positive number.");
}
if (maxDelay <= TimeSpan.Zero)
{
throw new ArgumentOutOfRangeException("maxDelay", maxDelay, "ExponentialBackoff max delay must be a positive number.");
}
if (step <= TimeSpan.Zero)
{
throw new ArgumentOutOfRangeException("step", step, "ExponentialBackoff step must be a positive number.");
}
if (minDelay >= maxDelay)
{
throw new ArgumentOutOfRangeException("minDelay", minDelay, "ExponentialBackoff min delay must be greater than max delay.");
}
this.minDelay = minDelay;
this.maxDelay = maxDelay;
this.step = step;
this.random = new SafeRandom();
}