public override void Process(ErrorPipelineContext ctx)
{
if (Settings.Current.WebsiteMode == WebsiteMode.Dev)
{
return;
}
// Throttle errors by client ip address to no more than X every 5 minutes.
string clientIp = null;
if (ctx.Error.RequestInfo != null && !String.IsNullOrEmpty(ctx.Error.RequestInfo.ClientIpAddress))
{
clientIp = ctx.Error.RequestInfo.ClientIpAddress;
}
if (String.IsNullOrEmpty(clientIp))
{
return;
}
string throttleCacheKey = String.Concat("bot:", clientIp, ":", DateTime.Now.Floor(_throttlingPeriod).Ticks);
var requestCount = _cacheClient.Get <int?>(throttleCacheKey);
if (requestCount != null)
{
_cacheClient.Increment(throttleCacheKey, 1);
requestCount++;
}
else
{
_cacheClient.Set(throttleCacheKey, 1, _throttlingPeriod);
requestCount = 1;
}
if (requestCount < Settings.Current.BotThrottleLimit)
{
return;
}
Log.Info().Message("Bot throttle triggered. IP: {0} Time: {1} Project: {2}", clientIp, DateTime.Now.Floor(_throttlingPeriod), ctx.Error.ProjectId).Project(ctx.Error.ProjectId).Write();
// the throttle was triggered, go and delete all the errors that triggered the throttle to reduce bot noise in the system
Task.Run(() => _errorRepository.RemoveAllByClientIpAndDateAsync(clientIp, DateTime.Now.Floor(_throttlingPeriod), DateTime.Now.Ceiling(_throttlingPeriod)));
ctx.IsCancelled = true;
}
