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WriteCommandOperation.cs
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WriteCommandOperation.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.Bson;
using MongoDB.Bson.Serialization;
using MongoDB.Bson.Serialization.Serializers;
using MongoDB.Driver.Core.Bindings;
using MongoDB.Driver.Core.Events;
using MongoDB.Driver.Core.Misc;
using MongoDB.Driver.Core.WireProtocol.Messages.Encoders;
namespace MongoDB.Driver.Core.Operations
{
/// <summary>
/// Represents a write command operation.
/// </summary>
/// <typeparam name="TCommandResult">The type of the command result.</typeparam>
public class WriteCommandOperation<TCommandResult> : CommandOperationBase<TCommandResult>, IWriteOperation<TCommandResult>
{
private ReadPreference _readPreference = ReadPreference.Primary;
// constructors
/// <summary>
/// Initializes a new instance of the <see cref="WriteCommandOperation{TCommandResult}"/> class.
/// </summary>
/// <param name="databaseNamespace">The database namespace.</param>
/// <param name="command">The command.</param>
/// <param name="resultSerializer">The result serializer.</param>
/// <param name="messageEncoderSettings">The message encoder settings.</param>
public WriteCommandOperation(DatabaseNamespace databaseNamespace, BsonDocument command, IBsonSerializer<TCommandResult> resultSerializer, MessageEncoderSettings messageEncoderSettings)
: base(databaseNamespace, command, resultSerializer, messageEncoderSettings)
{
}
// properties
/// <summary>
/// Gets or sets the read preference.
/// </summary>
public ReadPreference ReadPreference
{
get => _readPreference;
set => _readPreference = Ensure.IsNotNull(value, nameof(value));
}
// methods
/// <inheritdoc/>
public TCommandResult Execute(IWriteBinding binding, CancellationToken cancellationToken)
{
Ensure.IsNotNull(binding, nameof(binding));
using (EventContext.BeginOperation())
using (var channelSource = binding.GetWriteChannelSource(cancellationToken))
{
return ExecuteProtocol(channelSource, binding.Session, _readPreference, cancellationToken);
}
}
/// <inheritdoc/>
public async Task<TCommandResult> ExecuteAsync(IWriteBinding binding, CancellationToken cancellationToken = default(CancellationToken))
{
Ensure.IsNotNull(binding, nameof(binding));
using (EventContext.BeginOperation())
using (var channelSource = await binding.GetWriteChannelSourceAsync(cancellationToken).ConfigureAwait(false))
{
return await ExecuteProtocolAsync(channelSource, binding.Session, _readPreference, cancellationToken).ConfigureAwait(false);
}
}
}
}