protected async override Task DumpToDBAsync(T[] data, TargetTable targetTable)
{
using (var bulkReader = new BulkDataReader <T>(m_typeAccessor, data))
{
using (var conn = new SqlConnection(targetTable.ConnectionString))
{
await conn.OpenAsync().ConfigureAwait(false);
var transaction = conn.BeginTransaction();
try
{
using (var bulkCopy = new SqlBulkCopy(conn, SqlBulkCopyOptions.TableLock, transaction))
{
foreach (SqlBulkCopyColumnMapping map in bulkReader.ColumnMappings)
{
bulkCopy.ColumnMappings.Add(map);
}
bulkCopy.DestinationTableName = targetTable.TableName;
bulkCopy.BulkCopyTimeout = (int)TimeSpan.FromMinutes(30).TotalMilliseconds;
bulkCopy.BatchSize = m_bulkSize;
// Write from the source to the destination.
await bulkCopy.WriteToServerAsync(bulkReader).ConfigureAwait(false);
}
}
catch (Exception e)
{
if (e is NullReferenceException)
{
m_logger.Error($"{this.FullName} NullReferenceException occurred in bulk insertion for type {typeof(T).Name}. This is probably caused by forgetting assigning value to a [NoNullCheck] attribute when constructing your object.");
}
m_logger.ErrorFormat("{0} Bulk insertion failed. Rolling back all changes...", this.FullName, e);
transaction.Rollback();
m_logger.InfoFormat("{0} Changes successfully rolled back", this.FullName);
//As this is an unrecoverable exception, rethrow it
throw;
}
transaction.Commit();
await this.OnPostBulkInsert(conn, targetTable, data).ConfigureAwait(false);
}
}
}
protected override async Task DumpToDBAsync(T[] data, TargetTable targetTable)
{
m_logger.Debug(h => h("{3} starts bulk-inserting {0} {1} to db table {2}", data.Length, typeof(T).Name, targetTable.TableName, this.FullName));
using (var bulkReader = new BulkDataReader <T>(m_typeAccessor, data))
{
try
{
using (var bulkCopy = new SqlBulkCopy(m_longConnection, SqlBulkCopyOptions.TableLock, m_transaction))
{
foreach (SqlBulkCopyColumnMapping map in bulkReader.ColumnMappings)
{
bulkCopy.ColumnMappings.Add(map);
}
bulkCopy.DestinationTableName = targetTable.TableName;
bulkCopy.BulkCopyTimeout = (int)TimeSpan.FromMinutes(30).TotalMilliseconds;
bulkCopy.BatchSize = m_bulkSize;
// Write from the source to the destination.
await bulkCopy.WriteToServerAsync(bulkReader).ConfigureAwait(false);
}
}
catch (Exception e)
{
if (e is NullReferenceException)
{
m_logger.ErrorFormat(
"{0} NullReferenceException occurred in bulk insertion. This is probably caused by forgetting assigning value to a [NoNullCheck] attribute when constructing your object.",
this.FullName);
}
m_logger.ErrorFormat("{0} Bulk insertion error in the first place", e, this.FullName);
//As this is an unrecoverable exception, rethrow it
throw new AggregateException(e);
}
await this.OnPostBulkInsert(m_longConnection, targetTable, data).ConfigureAwait(false);
}
m_logger.Info(h => h("{3} bulk-inserted {0} {1} to db table {2}", data.Length, typeof(T).Name, targetTable.TableName, this.FullName));
}
