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UnpooledConnectorSource.cs
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58 lines (46 loc) · 1.82 KB
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using System.Diagnostics.CodeAnalysis;
using System.Threading;
using System.Threading.Tasks;
using System.Transactions;
using Npgsql.Internal;
using Npgsql.Util;
namespace Npgsql;
sealed class UnpooledConnectorSource : ConnectorSource
{
public UnpooledConnectorSource(NpgsqlConnectionStringBuilder settings, string connString)
: base(settings, connString)
{
}
volatile int _numConnectors;
internal override (int Total, int Idle, int Busy) Statistics => (_numConnectors, 0, _numConnectors);
internal override bool OwnsConnectors => true;
internal override async ValueTask<NpgsqlConnector> Get(
NpgsqlConnection conn, NpgsqlTimeout timeout, bool async, CancellationToken cancellationToken)
{
var connector = new NpgsqlConnector(this, conn);
await connector.Open(timeout, async, cancellationToken);
Interlocked.Increment(ref _numConnectors);
return connector;
}
internal override bool TryGetIdleConnector([NotNullWhen(true)] out NpgsqlConnector? connector)
{
connector = null;
return false;
}
internal override ValueTask<NpgsqlConnector?> OpenNewConnector(
NpgsqlConnection conn, NpgsqlTimeout timeout, bool async, CancellationToken cancellationToken)
=> new((NpgsqlConnector?)null);
internal override void Return(NpgsqlConnector connector)
{
Interlocked.Decrement(ref _numConnectors);
connector.Close();
}
internal override void Clear() {}
internal override bool TryRentEnlistedPending(Transaction transaction, NpgsqlConnection connection,
[NotNullWhen(true)] out NpgsqlConnector? connector)
{
connector = null;
return false;
}
internal override bool TryRemovePendingEnlistedConnector(NpgsqlConnector connector, Transaction transaction) => false;
}