private static async Task ClampHistory(ModelDbContext dbContext, long serviceInstanceId, int maxHistorySize, CancellationToken cancellationToken)
{
var statusEntryCount = await dbContext.ServiceStatus.Where(s => s.ServiceInstanceId == serviceInstanceId)
.LongCountAsync(cancellationToken).ConfigureAwait(false);
var entriesToDeleteCount = statusEntryCount - maxHistorySize;
if (entriesToDeleteCount > 0)
{
var entriesToDelete = await dbContext.ServiceStatus.Where(s => s.ServiceInstanceId == serviceInstanceId)
.OrderBy(s => s.CreatedAt).Take((int)entriesToDeleteCount).ToListAsync(cancellationToken)
.ConfigureAwait(false);
if (entriesToDelete.Any())
{
dbContext.RemoveRange(entriesToDelete);
}
}
}
