public static string GetIndexForTimeRange(long fromTicksUtc, long toTicksUtc)
{
var stringBuilder = new StringBuilder();
var time = DateTimeFormatter.DateFromTicks(fromTicksUtc);
var endTime = DateTimeFormatter.DateFromTicks(toTicksUtc).Add(minimumSupportedIndexCreationInterval);
var dayWildcardFormat = RtqElasticsearchConsts.DataIndexNameFormat.Replace("dd", "*");
var monthWildcardFormat = dayWildcardFormat.Replace("MM", "*");
while (time < endTime)
{
var moved = false;
if (time.Day == 1)
{
DateTime nextTime;
if (time.Month == 1)
{
if ((nextTime = time.AddYears(1)) <= endTime)
{
Append(stringBuilder, time, monthWildcardFormat);
time = nextTime;
moved = true;
}
}
if (!moved && (nextTime = time.AddMonths(1)) <= endTime)
{
Append(stringBuilder, time, dayWildcardFormat);
time = nextTime;
moved = true;
}
}
if (!moved)
{
Append(stringBuilder, time, RtqElasticsearchConsts.DataIndexNameFormat);
time = time.AddDays(1);
}
}
return(stringBuilder.ToString());
}