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ChannelReadWriteBinding.cs
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ChannelReadWriteBinding.cs
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/* Copyright 2013-present MongoDB Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
using System;
using System.Threading;
using System.Threading.Tasks;
using MongoDB.Driver.Core.Misc;
using MongoDB.Driver.Core.Servers;
namespace MongoDB.Driver.Core.Bindings
{
/// <summary>
/// Represents a read-write binding that is bound to a channel.
/// </summary>
public sealed class ChannelReadWriteBinding : IReadWriteBinding
{
// fields
private readonly IChannelHandle _channel;
private bool _disposed;
private readonly IServer _server;
private readonly ICoreSessionHandle _session;
// constructors
/// <summary>
/// Initializes a new instance of the <see cref="ChannelReadWriteBinding" /> class.
/// </summary>
/// <param name="server">The server.</param>
/// <param name="channel">The channel.</param>
/// <param name="session">The session.</param>
public ChannelReadWriteBinding(IServer server, IChannelHandle channel, ICoreSessionHandle session)
{
_server = Ensure.IsNotNull(server, nameof(server));
_channel = Ensure.IsNotNull(channel, nameof(channel));
_session = Ensure.IsNotNull(session, nameof(session));
}
// properties
/// <inheritdoc/>
public ReadPreference ReadPreference
{
get { return ReadPreference.Primary; }
}
/// <inheritdoc/>
public ICoreSessionHandle Session
{
get { return _session; }
}
// methods
/// <inheritdoc/>
public void Dispose()
{
if (!_disposed)
{
_channel.Dispose();
_session.Dispose();
_disposed = true;
}
}
/// <inheritdoc/>
public IChannelSourceHandle GetReadChannelSource(CancellationToken cancellationToken)
{
ThrowIfDisposed();
return GetChannelSourceHelper();
}
/// <inheritdoc/>
public Task<IChannelSourceHandle> GetReadChannelSourceAsync(CancellationToken cancellationToken)
{
ThrowIfDisposed();
return Task.FromResult(GetChannelSourceHelper());
}
/// <inheritdoc/>
public IChannelSourceHandle GetWriteChannelSource(CancellationToken cancellationToken)
{
ThrowIfDisposed();
return GetChannelSourceHelper();
}
/// <inheritdoc/>
public IChannelSourceHandle GetWriteChannelSource(IMayUseSecondaryCriteria mayUseSecondary, CancellationToken cancellationToken)
{
return GetWriteChannelSource(cancellationToken); // ignore mayUseSecondary
}
/// <inheritdoc/>
public Task<IChannelSourceHandle> GetWriteChannelSourceAsync(CancellationToken cancellationToken)
{
ThrowIfDisposed();
return Task.FromResult(GetChannelSourceHelper());
}
/// <inheritdoc/>
public Task<IChannelSourceHandle> GetWriteChannelSourceAsync(IMayUseSecondaryCriteria mayUseSecondary, CancellationToken cancellationToken)
{
return GetWriteChannelSourceAsync(cancellationToken); // ignore mayUseSecondary
}
// private methods
private IChannelSourceHandle GetChannelSourceHelper()
{
return new ChannelSourceHandle(new ChannelChannelSource(_server, _channel.Fork(), _session.Fork()));
}
private void ThrowIfDisposed()
{
if (_disposed)
{
throw new ObjectDisposedException(GetType().FullName);
}
}
}
}