aspnetcore/src/Kestrel.Core/Internal/ConnectionLogScope.cs

64 lines
1.6 KiB
C#

// Copyright (c) .NET Foundation. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
using System;
using System.Collections;
using System.Collections.Generic;
using System.Globalization;
namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal
{
public class ConnectionLogScope : IReadOnlyList<KeyValuePair<string, object>>
{
private readonly string _connectionId;
private string _cachedToString;
public ConnectionLogScope(string connectionId)
{
_connectionId = connectionId;
}
public KeyValuePair<string, object> this[int index]
{
get
{
if (index == 0)
{
return new KeyValuePair<string, object>("ConnectionId", _connectionId);
}
throw new ArgumentOutOfRangeException(nameof(index));
}
}
public int Count => 1;
public IEnumerator<KeyValuePair<string, object>> GetEnumerator()
{
for (int i = 0; i < Count; ++i)
{
yield return this[i];
}
}
IEnumerator IEnumerable.GetEnumerator()
{
return GetEnumerator();
}
public override string ToString()
{
if (_cachedToString == null)
{
_cachedToString = string.Format(
CultureInfo.InvariantCulture,
"ConnectionId:{0}",
_connectionId);
}
return _cachedToString;
}
}
}