/// <summary>
/// Runs aggregator
/// </summary>
/// <param name="cancellationToken">Cancellation token</param>
public void Execute(CancellationToken cancellationToken)
{
Logger.DebugFormat("Aggregating records in 'Counter' table...");
long removedCount = 0;
do
{
using (var storageConnection = (LiteDbConnection)_storage.GetConnection())
{
var database = storageConnection.Database;
var recordsToAggregate = database
.StateDataCounter
.FindAll()
.Take(NumberOfRecordsInSinglePass)
.ToList();
var recordsToMerge = recordsToAggregate
.GroupBy(_ => _.Key).Select(_ => new
{
_.Key,
Value = _.Sum(x => x.Value.ToInt64()),
ExpireAt = _.Max(x => x.ExpireAt)
});
foreach (var id in recordsToAggregate.Select(_ => _.Id))
{
database
.StateDataCounter
.Delete(id);
removedCount++;
}
foreach (var item in recordsToMerge)
{
AggregatedCounter aggregatedItem = database
.StateDataAggregatedCounter
.Find(_ => _.Key == item.Key)
.FirstOrDefault();
if (aggregatedItem != null)
{
var aggregatedCounters = database.StateDataAggregatedCounter.Find(_ => _.Key == item.Key);
foreach (var counter in aggregatedCounters)
{
counter.Value = counter.Value.ToInt64() + item.Value;
counter.ExpireAt = item.ExpireAt > aggregatedItem.ExpireAt
? (item.ExpireAt.HasValue ? (DateTime?)item.ExpireAt.Value : null)
: (aggregatedItem.ExpireAt.HasValue ? (DateTime?)aggregatedItem.ExpireAt.Value : null);
database.StateDataAggregatedCounter.Update(counter);
}
}
else
{
database
.StateDataAggregatedCounter
.Insert(new AggregatedCounter
{
Id = ObjectId.NewObjectId(),
Key = item.Key,
Value = item.Value,
ExpireAt = item.ExpireAt
});
}
}
}
if (removedCount >= NumberOfRecordsInSinglePass)
{
cancellationToken.WaitHandle.WaitOne(DelayBetweenPasses);
cancellationToken.ThrowIfCancellationRequested();
}
} while (removedCount >= NumberOfRecordsInSinglePass);
cancellationToken.WaitHandle.WaitOne(_interval);
}
/// <summary>
/// Runs aggregator
/// </summary>
/// <param name="cancellationToken">Cancellation token</param>
public void Execute(CancellationToken cancellationToken)
{
Logger.DebugFormat("Aggregating records in 'Counter' table...");
long removedCount = 0;
do
{
using (var storageConnection = (HangfireSQLiteConnection)_storage.GetConnection())
{
var storageDb = storageConnection.DbContext;
var recordsToAggregate = storageDb
.CounterRepository
.Take(NumberOfRecordsInSinglePass)
.ToList();
var recordsToMerge = recordsToAggregate
.GroupBy(_ => _.Key).Select(_ => new
{
_.Key,
Value = _.Sum(x => x.Value),
ExpireAt = _.Max(x => x.ExpireAt)
});
foreach (var id in recordsToAggregate.Select(_ => _.Id))
{
storageDb
.CounterRepository
.Delete(_ => _.Id == id);
removedCount++;
}
foreach (var item in recordsToMerge)
{
AggregatedCounter aggregatedItem = storageDb
.AggregatedCounterRepository
.FirstOrDefault(_ => _.Key == item.Key);
if (aggregatedItem != null)
{
var aggregatedCounters = storageDb.AggregatedCounterRepository.Where(_ => _.Key == item.Key).ToList();
foreach (var counter in aggregatedCounters)
{
counter.Value += item.Value;
counter.ExpireAt = item.ExpireAt > aggregatedItem.ExpireAt
? (item.ExpireAt > DateTime.MinValue ? item.ExpireAt : DateTime.MinValue)
: (aggregatedItem.ExpireAt > DateTime.MinValue ?
aggregatedItem.ExpireAt : DateTime.MinValue);
storageDb.Database.Update(counter);
}
}
else
{
storageDb
.Database
.Insert(new AggregatedCounter
{
Key = item.Key,
Value = item.Value,
ExpireAt = item.ExpireAt
});
}
}
}
if (removedCount >= NumberOfRecordsInSinglePass)
{
cancellationToken.WaitHandle.WaitOne(DelayBetweenPasses);
cancellationToken.ThrowIfCancellationRequested();
}
} while (removedCount >= NumberOfRecordsInSinglePass);
cancellationToken.WaitHandle.WaitOne(_interval);
}
