public async Task RegisterUsersAsync(long listId, IEnumerable <long> userIds)
{
await WriteTaskFactory.StartNew(() =>
{
try
{
ReaderWriterLock.EnterWriteLock();
using (var conn = this.DangerousOpenConnection())
using (var tran = conn.BeginTransaction(DefaultIsolationLevel))
{
foreach (var userId in userIds)
{
conn.Execute(TableInserter, new DatabaseListUser(listId, userId));
}
tran.Commit();
}
}
catch (Exception ex)
{
throw WrapException(ex, "RegisterUserAsync", TableInserter);
}
finally
{
ReaderWriterLock.ExitWriteLock();
}
});
}
internal async Task VacuumAsync()
{
// should execute WITHOUT transaction.
await WriteTaskFactory.StartNew(() =>
{
using (AcquireWriteLock())
using (var con = this.DangerousOpenConnection())
{
con.Execute("VACUUM;");
}
});
}
