private TCommandResult ProcessResponse(ConnectionId connectionId, CommandMessage responseMessage)
        {
            using (new CommandMessageDisposer(responseMessage))
            {
                var rawDocument = responseMessage.Sections.OfType <Type0CommandMessageSection <RawBsonDocument> >().Single().Document;

                var binaryReaderSettings = new BsonBinaryReaderSettings();
                if (_messageEncoderSettings != null)
                {
                    binaryReaderSettings.Encoding           = _messageEncoderSettings.GetOrDefault <UTF8Encoding>(MessageEncoderSettingsName.ReadEncoding, Utf8Encodings.Strict);
                    binaryReaderSettings.GuidRepresentation = _messageEncoderSettings.GetOrDefault <GuidRepresentation>(MessageEncoderSettingsName.GuidRepresentation, GuidRepresentation.CSharpLegacy);
                }
                ;

                BsonValue clusterTime;
                if (rawDocument.TryGetValue("$clusterTime", out clusterTime))
                {
                    // note: we are assuming that _session is an instance of ClusterClockAdvancingClusterTime
                    // and that calling _session.AdvanceClusterTime will have the side effect of advancing the cluster's ClusterTime also
                    var materializedClusterTime = ((RawBsonDocument)clusterTime).Materialize(binaryReaderSettings);
                    _session.AdvanceClusterTime(materializedClusterTime);
                }

                BsonValue operationTime;
                if (rawDocument.TryGetValue("operationTime", out operationTime))
                {
                    _session.AdvanceOperationTime(operationTime.AsBsonTimestamp);
                }

                if (!rawDocument.GetValue("ok", false).ToBoolean())
                {
                    var materializedDocument = rawDocument.Materialize(binaryReaderSettings);

                    var commandName = _command.GetElement(0).Name;
                    if (commandName == "$query")
                    {
                        commandName = _command["$query"].AsBsonDocument.GetElement(0).Name;
                    }

                    var notPrimaryOrNodeIsRecoveringException = ExceptionMapper.MapNotPrimaryOrNodeIsRecovering(connectionId, materializedDocument, "errmsg");
                    if (notPrimaryOrNodeIsRecoveringException != null)
                    {
                        throw notPrimaryOrNodeIsRecoveringException;
                    }

                    var mappedException = ExceptionMapper.Map(connectionId, materializedDocument);
                    if (mappedException != null)
                    {
                        throw mappedException;
                    }

                    string    message;
                    BsonValue errmsgBsonValue;
                    if (materializedDocument.TryGetValue("errmsg", out errmsgBsonValue) && errmsgBsonValue.IsString)
                    {
                        var errmsg = errmsgBsonValue.ToString();
                        message = string.Format("Command {0} failed: {1}.", commandName, errmsg);
                    }
                    else
                    {
                        message = string.Format("Command {0} failed.", commandName);
                    }

                    throw new MongoCommandException(connectionId, message, _command, materializedDocument);
                }

                using (var stream = new ByteBufferStream(rawDocument.Slice, ownsBuffer: false))
                {
                    using (var reader = new BsonBinaryReader(stream, binaryReaderSettings))
                    {
                        var context = BsonDeserializationContext.CreateRoot(reader);
                        return(_resultSerializer.Deserialize(context));
                    }
                }
            }
        }
 /// <inheritdoc />
 public virtual void AdvanceOperationTime(BsonTimestamp newOperationTime)
 {
     ThrowIfDisposed();
     _wrapped.AdvanceOperationTime(newOperationTime);
 }
        private TCommandResult ProcessResponse(ConnectionId connectionId, CommandMessage responseMessage)
        {
            using (new CommandMessageDisposer(responseMessage))
            {
                var rawDocument = responseMessage.Sections.OfType <Type0CommandMessageSection <RawBsonDocument> >().Single().Document;

                var binaryReaderSettings = new BsonBinaryReaderSettings();
                if (_messageEncoderSettings != null)
                {
                    binaryReaderSettings.Encoding = _messageEncoderSettings.GetOrDefault <UTF8Encoding>(MessageEncoderSettingsName.ReadEncoding, Utf8Encodings.Strict);
#pragma warning disable 618
                    if (BsonDefaults.GuidRepresentationMode == GuidRepresentationMode.V2)
                    {
                        binaryReaderSettings.GuidRepresentation = _messageEncoderSettings.GetOrDefault <GuidRepresentation>(MessageEncoderSettingsName.GuidRepresentation, GuidRepresentation.CSharpLegacy);
                    }
#pragma warning restore 618
                }
                ;

                BsonValue clusterTime;
                if (rawDocument.TryGetValue("$clusterTime", out clusterTime))
                {
                    // note: we are assuming that _session is an instance of ClusterClockAdvancingClusterTime
                    // and that calling _session.AdvanceClusterTime will have the side effect of advancing the cluster's ClusterTime also
                    var materializedClusterTime = ((RawBsonDocument)clusterTime).Materialize(binaryReaderSettings);
                    _session.AdvanceClusterTime(materializedClusterTime);
                }

                BsonValue operationTime;
                if (rawDocument.TryGetValue("operationTime", out operationTime))
                {
                    _session.AdvanceOperationTime(operationTime.AsBsonTimestamp);
                }

                if (rawDocument.GetValue("ok", false).ToBoolean())
                {
                    if (rawDocument.TryGetValue("recoveryToken", out var rawRecoveryToken))
                    {
                        var recoveryToken = ((RawBsonDocument)rawRecoveryToken).Materialize(binaryReaderSettings);
                        _session.CurrentTransaction.RecoveryToken = recoveryToken;
                    }
                }
                else
                {
                    var materializedDocument = rawDocument.Materialize(binaryReaderSettings);

                    var commandName = _command.GetElement(0).Name;
                    if (commandName == "$query")
                    {
                        commandName = _command["$query"].AsBsonDocument.GetElement(0).Name;
                    }

                    var notPrimaryOrNodeIsRecoveringException = ExceptionMapper.MapNotPrimaryOrNodeIsRecovering(connectionId, _command, materializedDocument, "errmsg");
                    if (notPrimaryOrNodeIsRecoveringException != null)
                    {
                        throw notPrimaryOrNodeIsRecoveringException;
                    }

                    var mappedException = ExceptionMapper.Map(connectionId, materializedDocument);
                    if (mappedException != null)
                    {
                        throw mappedException;
                    }

                    string    message;
                    BsonValue errmsgBsonValue;
                    if (materializedDocument.TryGetValue("errmsg", out errmsgBsonValue) && errmsgBsonValue.IsString)
                    {
                        var errmsg = errmsgBsonValue.ToString();
                        message = string.Format("Command {0} failed: {1}.", commandName, errmsg);
                    }
                    else
                    {
                        message = string.Format("Command {0} failed.", commandName);
                    }

                    var exception = new MongoCommandException(connectionId, message, _command, materializedDocument);

                    // https://jira.mongodb.org/browse/CSHARP-2678
                    if (IsRetryableWriteExceptionAndDeploymentDoesNotSupportRetryableWrites(exception))
                    {
                        throw WrapNotSupportedRetryableWriteException(exception);
                    }
                    else
                    {
                        throw exception;
                    }
                }

                if (rawDocument.Contains("writeConcernError"))
                {
                    var materializedDocument = rawDocument.Materialize(binaryReaderSettings);
                    var writeConcernError    = materializedDocument["writeConcernError"].AsBsonDocument;
                    var message            = writeConcernError.AsBsonDocument.GetValue("errmsg", null)?.AsString;
                    var writeConcernResult = new WriteConcernResult(materializedDocument);
                    throw new MongoWriteConcernException(connectionId, message, writeConcernResult);
                }

                using (var stream = new ByteBufferStream(rawDocument.Slice, ownsBuffer: false))
                {
                    using (var reader = new BsonBinaryReader(stream, binaryReaderSettings))
                    {
                        var context = BsonDeserializationContext.CreateRoot(reader);
                        return(_resultSerializer.Deserialize(context));
                    }
                }
            }
        }