public List<ElmahError> GetElmahError(DateTime start, DateTime end)
{
if (StorageAccount == null) StorageAccount = CloudStorageAccount.Parse(ConnectionString);
List<string> nonCriticalErrorDictionary = new JavaScriptSerializer().Deserialize<List<string>>(Load(StorageAccount, "Configuration.ElmahNonCriticalErrors.json", ContainerName));
TableErrorLog log = new TableErrorLog(string.Format(ElmahAccountCredentials));
List<ErrorLogEntry> entities = new List<ErrorLogEntry>();
int lasthours = DateTime.Now.Subtract(start).Hours + 1;
log.GetErrors(0, 500 * lasthours, entities); //retrieve n * LastNHours errors assuming a max of 500 errors per hour.
List<ElmahError> listOfErrors = new List<ElmahError>();
//Get the error from Last N hours.
if (entities.Any(entity => entity.Error.Time.ToUniversalTime() > start.ToUniversalTime() && entity.Error.Time.ToUniversalTime() < end.ToUniversalTime()))
{
entities = entities.Where(entity => entity.Error.Time.ToUniversalTime() > start.ToUniversalTime() && entity.Error.Time.ToUniversalTime() < end.ToUniversalTime()).ToList();
var elmahGroups = entities.GroupBy(item => item.Error.Message);
//Group the error based on exception and send alerts if critical errors exceed the thresold values.
foreach (IGrouping<string, ErrorLogEntry> errorGroups in elmahGroups)
{
Console.WriteLine(errorGroups.Key.ToString() + " " + errorGroups.Count());
int severity = 0;
if (nonCriticalErrorDictionary.Any(item => errorGroups.Key.ToString().Contains(item)))
{
severity = 1; //sev 1 is low pri and sev 0 is high pri.
}
string link = "https://www.nuget.org/Admin/Errors.axd/detail?id={0}";
if (ContainerName.Contains("qa"))
{
link = "https://int.nugettest.org/Admin/Errors.axd/detail?id={0}";
}
//for severity, assume all refresh error, severity = 0
listOfErrors.Add(new ElmahError(errorGroups.Key.ToString(), errorGroups.Count(), errorGroups.Min(item => item.Error.Time.ToLocalTime()), errorGroups.Max(item => item.Error.Time.ToLocalTime()), string.Format(link, errorGroups.First().Id), errorGroups.First().Error.Detail, severity));
}
}
return listOfErrors;
}