private Task <BsonDocument> ExplainFindAsync <TResult>(FindModel <TResult> model, ExplainVerbosity verbosity, TimeSpan?timeout, CancellationToken cancellationToken)
{
var findOperation = CreateFindOperation <TResult>(model);
var explainOperation = findOperation.ToExplainOperation(verbosity.ToCore());
return(ExecuteReadOperation(explainOperation, timeout, cancellationToken));
}
public Task <IAsyncEnumerable <TResult> > FindAsync <TResult>(FindModel <TResult> model, TimeSpan?timeout, CancellationToken cancellationToken)
{
Ensure.IsNotNull(model, "model");
var operation = CreateFindOperation <TResult>(model);
return(Task.FromResult <IAsyncEnumerable <TResult> >(new AsyncCursorAsyncEnumerable <TResult>(
() => ExecuteReadOperation(operation, timeout, cancellationToken),
model.Limit)));
}
public async Task FindAsync_should_execute_the_FindOperation()
{
var criteria = BsonDocument.Parse("{x:1}");
var projection = BsonDocument.Parse("{y:1}");
var sort = BsonDocument.Parse("{a:1}");
var model = new FindModel <BsonDocument>
{
AwaitData = false,
BatchSize = 20,
Comment = "funny",
Criteria = criteria,
Limit = 30,
MaxTime = TimeSpan.FromSeconds(3),
Modifiers = BsonDocument.Parse("{$snapshot: true}"),
NoCursorTimeout = true,
Partial = true,
Projection = projection,
Skip = 40,
Sort = sort,
Tailable = true
};
var fakeCursor = Substitute.For <IAsyncCursor <BsonDocument> >();
_operationExecutor.EnqueueResult(fakeCursor);
var result = await _subject.FindAsync(model, Timeout.InfiniteTimeSpan, CancellationToken.None);
// we haven't executed the operation yet.
_operationExecutor.QueuedCallCount.Should().Be(0);
// this causes execution of the operation
await result.GetAsyncEnumerator().MoveNextAsync();
var call = _operationExecutor.GetReadCall <IAsyncCursor <BsonDocument> >();
call.Operation.Should().BeOfType <FindOperation <BsonDocument> >();
var operation = (FindOperation <BsonDocument>)call.Operation;
operation.CollectionNamespace.FullName.Should().Be("foo.bar");
operation.AwaitData.Should().Be(model.AwaitData);
operation.BatchSize.Should().Be(model.BatchSize);
operation.Comment.Should().Be("funny");
operation.Criteria.Should().Be(criteria);
operation.Limit.Should().Be(model.Limit);
operation.MaxTime.Should().Be(model.MaxTime);
operation.Modifiers.Should().Be(model.Modifiers);
operation.NoCursorTimeout.Should().Be(model.NoCursorTimeout);
operation.Partial.Should().Be(model.Partial);
operation.Projection.Should().Be(projection);
operation.Skip.Should().Be(model.Skip);
operation.Sort.Should().Be(sort);
operation.Tailable.Should().Be(model.Tailable);
}
public async Task ExplainAsync_for_find_should_execute_a_read_operation()
{
var findModel = new FindModel <BsonDocument>
{
Skip = 20
};
var model = new ExplainModel(findModel)
{
Verbosity = ExplainVerbosity.ExecutionStats
};
await _subject.ExplainAsync(model, Timeout.InfiniteTimeSpan, CancellationToken.None);
var call = _operationExecutor.GetReadCall <BsonDocument>();
call.Operation.Should().BeAssignableTo <IReadOperation <BsonDocument> >();
}
private FindOperation <TResult> CreateFindOperation <TResult>(FindModel <TResult> model)
{
var resultSerializer = model.ResultSerializer ?? _settings.SerializerRegistry.GetSerializer <TResult>();
return(new FindOperation <TResult>(
_collectionNamespace,
resultSerializer,
_messageEncoderSettings)
{
AwaitData = model.AwaitData,
BatchSize = model.BatchSize,
Comment = model.Comment,
Criteria = ConvertToBsonDocument(model.Criteria),
Limit = model.Limit,
MaxTime = model.MaxTime,
Modifiers = model.Modifiers,
NoCursorTimeout = model.NoCursorTimeout,
Partial = model.Partial,
Projection = ConvertToBsonDocument(model.Projection),
Skip = model.Skip,
Sort = ConvertToBsonDocument(model.Sort),
Tailable = model.Tailable
});
}
