public async Task <RateLimitingValidationResponse> ValidateContext(RateLimitingValidationContext rateLimitingValidationContext)
{
var rateLimitingCounter = new RateLimitingCounter
{
Timestamp = DateTime.UtcNow,
Count = 1
};
var expirationTime = rateLimitingValidationContext.Period.ToTimeSpan();
var counterKey = await _rateLimitingCounterKeyBuilder.BuildCounterKey(rateLimitingValidationContext);
var rateLimitingCounterEntry = await _rateLimitingCounterStore.GetCounter(counterKey);
if (rateLimitingCounterEntry != null)
{
rateLimitingCounter = rateLimitingCounterEntry;
rateLimitingCounter.Count += 1;
var expirationDateTime = rateLimitingCounterEntry.Timestamp + rateLimitingValidationContext.Period.ToTimeSpan();
expirationTime = expirationDateTime - DateTime.UtcNow;
}
await _rateLimitingCounterStore.SetCounter(counterKey, rateLimitingCounterEntry, expirationTime);
var rateLimitingValidationResponse = new RateLimitingValidationResponse
{
RateLimitingValidationContext = rateLimitingValidationContext,
RateLimitingCounter = rateLimitingCounter
};
return(rateLimitingValidationResponse);
}
public Task SetCounter(string counterKey, RateLimitingCounter rateLimitingCounter, TimeSpan expirationTime)
{
_memoryCache.Set(counterKey, rateLimitingCounter, expirationTime);
return(Task.CompletedTask);
}