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FeatureSetDetector.cs
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FeatureSetDetector.cs
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/* Copyright 2010-2013 10gen 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 MongoDB.Driver.Internal;
namespace MongoDB.Driver.Communication.FeatureDetection
{
internal class FeatureSetDetector
{
// private static fields
private static readonly IFeatureDetector[] __featureDetectors = new[]
{
// added in 2.5.2
new FeatureDetector(FeatureId.AggregateAllowDiskUsage, new ServerVersionDependency(2, 5, 2)),
new FeatureDetector(FeatureId.AggregateCursor, new ServerVersionDependency(2, 5, 2)),
new FeatureDetector(FeatureId.AggregateOutputToCollection, new ServerVersionDependency(2, 5, 2)),
new FeatureDetector(FeatureId.BatchModifyCommands,
new ServerVersionDependency(new Version(2, 5, 2), new Version(2, 5, 2)), // prototype implementation only works with 2.5.2
new ServerParameterDependency("enableExperimentalWriteCommands")), // and for now must be explicitly enabled in the server
// added in 2.5.3
new FeatureDetector(FeatureId.MaxTime, new ServerVersionDependency(2, 5, 3)), // while MaxTime was added in 2.5.2 the FailPoint for it wasn't added until 2.5.3
new FeatureDetector(FeatureId.UserManagementCommands, new ServerVersionDependency(2, 5, 3))
};
// public methods
public FeatureSet DetectFeatureSet(FeatureContext context)
{
var featureSet = new FeatureSet();
foreach (var featureDetector in __featureDetectors)
{
if (featureDetector.IsFeatureSupported(context))
{
featureSet.AddFeature(featureDetector.FeatureId);
}
}
return featureSet;
}
}
}