private Type0CommandMessageSection <BsonDocument> CreateType0Section(ConnectionDescription connectionDescription)
{
var extraElements = new List <BsonElement>();
addIfNotAlreadyAdded("$db", _databaseNamespace.DatabaseName);
if (connectionDescription.IsMasterResult.ServerType != ServerType.Standalone &&
_readPreference != null &&
_readPreference != ReadPreference.Primary)
{
var readPreferenceDocument = QueryHelper.CreateReadPreferenceDocument(_readPreference);
addIfNotAlreadyAdded("$readPreference", readPreferenceDocument);
}
if (_session.Id != null)
{
addIfNotAlreadyAdded("lsid", _session.Id);
}
if (_session.ClusterTime != null)
{
addIfNotAlreadyAdded("$clusterTime", _session.ClusterTime);
}
Action <BsonWriterSettings> writerSettingsConfigurator = s => s.GuidRepresentation = GuidRepresentation.Unspecified;
_session.AboutToSendCommand();
if (_session.IsInTransaction)
{
var transaction = _session.CurrentTransaction;
addIfNotAlreadyAdded("txnNumber", transaction.TransactionNumber);
if (transaction.State == CoreTransactionState.Starting)
{
addIfNotAlreadyAdded("startTransaction", true);
var readConcern = ReadConcernHelper.GetReadConcernForFirstCommandInTransaction(_session, connectionDescription);
if (readConcern != null)
{
addIfNotAlreadyAdded("readConcern", readConcern);
}
}
addIfNotAlreadyAdded("autocommit", false);
}
var elementAppendingSerializer = new ElementAppendingSerializer <BsonDocument>(BsonDocumentSerializer.Instance, extraElements, writerSettingsConfigurator);
return(new Type0CommandMessageSection <BsonDocument>(_command, elementAppendingSerializer));
void addIfNotAlreadyAdded(string key, BsonValue value)
{
if (!_command.Contains(key))
{
extraElements.Add(new BsonElement(key, value));
}
}
}
/// <inheritdoc />
public virtual void AboutToSendCommand()
{
ThrowIfDisposed();
_wrapped.AboutToSendCommand();
}
private Type0CommandMessageSection <BsonDocument> CreateType0Section(ConnectionDescription connectionDescription)
{
var extraElements = new List <BsonElement>();
AddIfNotAlreadyAdded("$db", _databaseNamespace.DatabaseName);
if (connectionDescription.IsMasterResult.ServerType != ServerType.Standalone &&
_readPreference != null &&
_readPreference != ReadPreference.Primary)
{
var readPreferenceDocument = QueryHelper.CreateReadPreferenceDocument(_readPreference);
AddIfNotAlreadyAdded("$readPreference", readPreferenceDocument);
}
if (_session.Id != null)
{
if (IsSessionAcknowledged())
{
AddIfNotAlreadyAdded("lsid", _session.Id);
}
else
{
if (_session.IsImplicit)
{
// do not set sessionId if session is implicit and write is unacknowledged
}
else
{
throw new InvalidOperationException("Explicit session must not be used with unacknowledged writes.");
}
}
}
if (_session.ClusterTime != null)
{
AddIfNotAlreadyAdded("$clusterTime", _session.ClusterTime);
}
#pragma warning disable 618
Action <BsonWriterSettings> writerSettingsConfigurator = null;
if (BsonDefaults.GuidRepresentationMode == GuidRepresentationMode.V2)
{
writerSettingsConfigurator = s => s.GuidRepresentation = GuidRepresentation.Unspecified;
}
#pragma warning restore 618
_session.AboutToSendCommand();
if (_session.IsInTransaction)
{
var transaction = _session.CurrentTransaction;
AddIfNotAlreadyAdded("txnNumber", transaction.TransactionNumber);
if (transaction.State == CoreTransactionState.Starting)
{
AddIfNotAlreadyAdded("startTransaction", true);
var readConcern = ReadConcernHelper.GetReadConcernForFirstCommandInTransaction(_session, connectionDescription);
if (readConcern != null)
{
AddIfNotAlreadyAdded("readConcern", readConcern);
}
}
AddIfNotAlreadyAdded("autocommit", false);
}
var elementAppendingSerializer = new ElementAppendingSerializer <BsonDocument>(BsonDocumentSerializer.Instance, extraElements, writerSettingsConfigurator);
return(new Type0CommandMessageSection <BsonDocument>(_command, elementAppendingSerializer));
void AddIfNotAlreadyAdded(string key, BsonValue value)
{
if (!_command.Contains(key))
{
extraElements.Add(new BsonElement(key, value));
}
}
bool IsSessionAcknowledged()
{
if (_command.TryGetValue("writeConcern", out var writeConcernDocument))
{
var writeConcern = WriteConcern.FromBsonDocument(writeConcernDocument.AsBsonDocument);
return(writeConcern.IsAcknowledged);
}
else
{
return(true);
}
}
}
