private static Task <ExceptionTarget> GetOrAddStringCachedExecptionTargetAsync(string input, ExceptionTarget target = null)
{
ExceptionTarget exTarget = null;
if (_stringExceptionCache.ContainsKey(input))
{
exTarget = _stringExceptionCache[input];
}
else if (target is null)
{
exTarget = new ExceptionTarget
{
AllowConsecutiveFailure = true,
FailureCount = 0,
FailureCountMax = 5,
GuaranteeFailure = false
};
_stringExceptionCache[input] = exTarget;
}
else
{
_stringExceptionCache[input] = exTarget = target;
}
return(Task.FromResult(exTarget));
}
public static async Task RollsTheDiceAsync(object input, ExceptionTarget target = null)
{
switch (input)
{
case int userInput: await HandleIntAsync(userInput, target).ConfigureAwait(false); break;
case long userInput: await HandleLongAsync(userInput, target).ConfigureAwait(false); break;
case string userInput: await HandleStringAsync(userInput, target).ConfigureAwait(false); break;
}
}
private static async Task HandleIntAsync(int input, ExceptionTarget target = null, bool allowContextualCleanup = false)
{
var exTarget = await GetOrAddIntCachedExecptionTargetAsync(input, target).ConfigureAwait(false);
if (exTarget.FailureCount < exTarget.FailureCountMax)
{
var throwException = false;
// Can We Throw Exception?
if (exTarget.GuaranteeFailure ||
exTarget.AllowConsecutiveFailure ||
(!exTarget.AllowConsecutiveFailure && !exTarget.LastIterationFailed))
{
// Will We Throw Exception?
throwException = await ShouldWeThrowExceptionAsync(input).ConfigureAwait(false);
if (throwException) // The Math Gods Say Yes!
{
exTarget.FailureCount++;
exTarget.LastIterationFailed = true;
}
else
{
exTarget.LastIterationFailed = false;
}
}
else
{
exTarget.LastIterationFailed = false;
}
// Update Cache
_intExceptionCache[input] = exTarget;
if (throwException)
{
await ThrowsRandomExceptionAsync().ConfigureAwait(false);
}
}
else if (allowContextualCleanup) // We are finished with this input! Allows it come back in!
{
_intExceptionCache.TryRemove(input, out ExceptionTarget outTarget);
}
}