CSHARP-4149: Add FLE 2 behavior for CreateCollection() and Collection.Drop(). #790
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| @@ -0,0 +1,86 @@ | ||
| /* Copyright 2010-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. | ||
| */ | ||
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| using System; | ||
| using System.Collections.Generic; | ||
| using System.Linq; | ||
| using MongoDB.Bson; | ||
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| namespace MongoDB.Driver.Encryption | ||
| { | ||
| internal static class EncryptedCollectionHelper | ||
| { | ||
| public static BsonDocument AdditionalCreateIndexDocument { get; } = new BsonDocument("__safeContent__", 1); | ||
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| public static void EnsureCollectionsValid(IReadOnlyDictionary<string, BsonDocument> schemaMap, IReadOnlyDictionary<string, BsonDocument> encryptedFieldsMap) | ||
| { | ||
| if (schemaMap == null || encryptedFieldsMap == null || schemaMap.Count == 0 || encryptedFieldsMap.Count == 0) | ||
| { | ||
| return; | ||
| } | ||
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| var mutualKeys = schemaMap.Keys.Where(k => encryptedFieldsMap.ContainsKey(k)); | ||
| if (mutualKeys.Any()) | ||
| { | ||
| throw new ArgumentException($"SchemaMap and EncryptedFieldsMap cannot both contain the same collections: {string.Join(", ", mutualKeys)}."); | ||
| } | ||
| } | ||
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| public static string GetAdditionalCollectionName(BsonDocument encryptedFields, CollectionNamespace mainCollectionNamespace, HelperCollectionForEncryption helperCollection) => | ||
| helperCollection switch | ||
| { | ||
| HelperCollectionForEncryption.Esc => encryptedFields.GetValue("escCollection", defaultValue: $"enxcol_.{mainCollectionNamespace.CollectionName}.esc").ToString(), | ||
| HelperCollectionForEncryption.Ecc => encryptedFields.GetValue("eccCollection", defaultValue: $"enxcol_.{mainCollectionNamespace.CollectionName}.ecc").ToString(), | ||
| HelperCollectionForEncryption.Ecos => encryptedFields.GetValue("ecocCollection", defaultValue: $"enxcol_.{mainCollectionNamespace.CollectionName}.ecoc").ToString(), | ||
| _ => throw new InvalidOperationException($"Not supported encryption helper collection {helperCollection}."), | ||
| }; | ||
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| public static bool TryGetEffectiveEncryptedFields(CollectionNamespace collectionNamespace, BsonDocument encryptedFields, IReadOnlyDictionary<string, BsonDocument> encryptedFieldsMap, out BsonDocument effectiveEncryptedFields) | ||
| { | ||
| if (encryptedFields != null) | ||
| { | ||
| effectiveEncryptedFields = encryptedFields; | ||
| return true; | ||
| } | ||
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| if (encryptedFieldsMap != null) | ||
| { | ||
| return encryptedFieldsMap.TryGetValue(collectionNamespace.ToString(), out effectiveEncryptedFields); | ||
| } | ||
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| effectiveEncryptedFields = null; | ||
| return false; | ||
| } | ||
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| public static BsonDocument GetEffectiveEncryptedFields(CollectionNamespace collectionNamespace, BsonDocument encryptedFields, IReadOnlyDictionary<string, BsonDocument> encryptedFieldsMap) | ||
| { | ||
| if (TryGetEffectiveEncryptedFields(collectionNamespace, encryptedFields, encryptedFieldsMap, out var effectiveEncryptedFields)) | ||
| { | ||
| return effectiveEncryptedFields; | ||
| } | ||
| else | ||
| { | ||
| return null; | ||
| } | ||
| } | ||
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| public enum HelperCollectionForEncryption | ||
| { | ||
| Esc, | ||
| Ecc, | ||
| Ecos | ||
| } | ||
| } | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,65 @@ | ||
| /* Copyright 2010-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. | ||
| */ | ||
|
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| using System.Linq; | ||
| using System.Threading; | ||
| using System.Threading.Tasks; | ||
| using MongoDB.Driver.Core.Bindings; | ||
| using MongoDB.Driver.Core.Misc; | ||
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| namespace MongoDB.Driver.Core.Operations | ||
| { | ||
| internal sealed class CompositeWriteOperation<TResult> : IWriteOperation<TResult> | ||
| { | ||
| private readonly (IWriteOperation<TResult> Operation, bool IsMainOperation)[] _operations; | ||
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| public CompositeWriteOperation(params (IWriteOperation<TResult>, bool IsMainOperation)[] operations) | ||
| { | ||
| _operations = Ensure.IsNotNull(operations, nameof(operations)); | ||
| Ensure.IsGreaterThanZero(operations.Length, nameof(operations.Length)); | ||
| Ensure.That(operations.Count(o => o.IsMainOperation) == 1, message: $"{nameof(CompositeWriteOperation<TResult>)} must have a single main operation."); | ||
| } | ||
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| public TResult Execute(IWriteBinding binding, CancellationToken cancellationToken) | ||
| { | ||
| TResult result = default; | ||
| foreach (var operationInfo in _operations) | ||
| { | ||
| var itemResult = operationInfo.Operation.Execute(binding, cancellationToken); | ||
| if (operationInfo.IsMainOperation) | ||
| { | ||
| result = itemResult; | ||
| } | ||
| } | ||
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| return result; | ||
| } | ||
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| public async Task<TResult> ExecuteAsync(IWriteBinding binding, CancellationToken cancellationToken) | ||
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| { | ||
| TResult result = default; | ||
| foreach (var operationInfo in _operations) | ||
| { | ||
| var itemResult = await operationInfo.Operation.ExecuteAsync(binding, cancellationToken).ConfigureAwait(false); | ||
| if (operationInfo.IsMainOperation) | ||
| { | ||
| result = itemResult; | ||
| } | ||
| } | ||
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| return result; | ||
| } | ||
| } | ||
| } | ||
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I found the logic of the above method somewhat confusing and it took me a long time to convince myself that it could be correct. I think the following refactoring expresses the intent more clearly:
What do you think?
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done