private string ComputeMaxSnapshotCount(SnapshotRule rule)
{
var nextFireTime = rule.GetNextFireTime(DateTimeOffset.Now.AddSeconds(-1));
if (!nextFireTime.HasValue)
{
return("0");
}
var lastFireTime = nextFireTime.Value.AddSeconds(rule.GetLifeTimeSeconds());
CancellationTokenSource cancelSrc = new CancellationTokenSource();
CancellationToken cancelToken = cancelSrc.Token;
Task <int> computeTask =
Task.Run(() => rule.GetFireCountBetween(nextFireTime.Value, lastFireTime, cancelToken));
try
{
cancelSrc.CancelAfter(1000);
computeTask.Wait(cancelToken);
return(computeTask.Result.ToString());
}
catch (OperationCanceledException)
{
return("(timeout: too many)");
}
}
private IEnumerable <SnapshotInstance> GetPruningListForRule(SnapshotRule rule)
{
List <SnapshotInstance> instances = SnapshotRuleInstanceMap.SafeGet(rule.Id);
if (instances == null)
{
return(new List <SnapshotInstance>());
}
long lifetime = rule.GetLifeTimeSeconds();
return(instances.Where(i => i.CreatedAt.AddSeconds(lifetime) < DateTime.Now).ToList());
}