public Task <IEnumerable <Snapshot> > GetAsync(
[FromRoute] Guid minerId,
[FromQuery] DateTime?from = null,
[FromQuery] DateTime?to = null,
CancellationToken token = default)
{
var end = to?.ToUniversalTime() ?? DateTime.UtcNow;
var start = from?.ToUniversalTime() ?? end.AddHours(-1);
var period = new ConcretePeriod(start, end);
return(_snapshotService.GetByMinerFillGapsAsync(minerId, period, TimeSpan.FromMinutes(1), token));
}
public async Task <IEnumerable <Snapshot> > GetByMinerFillGapsAsync(Guid minerId, ConcretePeriod period, TimeSpan interval, CancellationToken token = default)
{
return((await GetByMinerAsync(minerId, period, token)).FillGaps(period, interval).ToList());
}
public static IEnumerable <Snapshot> FillGaps(this IEnumerable <Snapshot> snapshots, ConcretePeriod expectedPeriod, TimeSpan expectedInterval)
{
var bufferTime = expectedInterval + expectedInterval;
var previous = new Snapshot
{
SnapshotTime = expectedPeriod.Start
};
foreach (var snapshot in snapshots.OrderBy(s => s.SnapshotTime))
{
while (expectedInterval > TimeSpan.Zero && snapshot.SnapshotTime - previous.SnapshotTime >= bufferTime)
{
previous = new Snapshot
{
SnapshotTime = previous.SnapshotTime + expectedInterval
};
yield return(previous);
}
yield return(snapshot);
previous = snapshot;
}
var doubleBufferTime = bufferTime + bufferTime;
if (previous.SnapshotTime >= expectedPeriod.End - doubleBufferTime)
{
yield break;
}
while (expectedInterval > TimeSpan.Zero && previous.SnapshotTime <= expectedPeriod.End - bufferTime)
{
previous = new Snapshot
{
SnapshotTime = previous.SnapshotTime + expectedInterval
};
yield return(previous);
}
}
