diff --git a/vendor/github.com/mongodb/mongo-go-driver/mongo/bulk_write.go b/vendor/github.com/mongodb/mongo-go-driver/mongo/bulk_write.go
new file mode 100644
index 0000000..f086189
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/mongo/bulk_write.go
@@ -0,0 +1,341 @@
+// Copyright (C) MongoDB, Inc. 2017-present.
+//
+// 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
+
+package mongo
+
+import (
+	"github.com/mongodb/mongo-go-driver/mongo/options"
+	"github.com/mongodb/mongo-go-driver/x/mongo/driver"
+)
+
+// WriteModel is the interface satisfied by all models for bulk writes.
+type WriteModel interface {
+	convertModel() driver.WriteModel
+}
+
+// InsertOneModel is the write model for insert operations.
+type InsertOneModel struct {
+	Document interface{}
+}
+
+// NewInsertOneModel creates a new InsertOneModel.
+func NewInsertOneModel() *InsertOneModel {
+	return &InsertOneModel{}
+}
+
+// SetDocument sets the BSON document for the InsertOneModel.
+func (iom *InsertOneModel) SetDocument(doc interface{}) *InsertOneModel {
+	iom.Document = doc
+	return iom
+}
+
+func (iom *InsertOneModel) convertModel() driver.WriteModel {
+	return driver.InsertOneModel{
+		Document: iom.Document,
+	}
+}
+
+// DeleteOneModel is the write model for delete operations.
+type DeleteOneModel struct {
+	Filter    interface{}
+	Collation *options.Collation
+}
+
+// NewDeleteOneModel creates a new DeleteOneModel.
+func NewDeleteOneModel() *DeleteOneModel {
+	return &DeleteOneModel{}
+}
+
+// SetFilter sets the filter for the DeleteOneModel.
+func (dom *DeleteOneModel) SetFilter(filter interface{}) *DeleteOneModel {
+	dom.Filter = filter
+	return dom
+}
+
+// SetCollation sets the collation for the DeleteOneModel.
+func (dom *DeleteOneModel) SetCollation(collation *options.Collation) *DeleteOneModel {
+	dom.Collation = collation
+	return dom
+}
+
+func (dom *DeleteOneModel) convertModel() driver.WriteModel {
+	return driver.DeleteOneModel{
+		Collation: dom.Collation,
+		Filter:    dom.Filter,
+	}
+}
+
+// DeleteManyModel is the write model for deleteMany operations.
+type DeleteManyModel struct {
+	Filter    interface{}
+	Collation *options.Collation
+}
+
+// NewDeleteManyModel creates a new DeleteManyModel.
+func NewDeleteManyModel() *DeleteManyModel {
+	return &DeleteManyModel{}
+}
+
+// SetFilter sets the filter for the DeleteManyModel.
+func (dmm *DeleteManyModel) SetFilter(filter interface{}) *DeleteManyModel {
+	dmm.Filter = filter
+	return dmm
+}
+
+// SetCollation sets the collation for the DeleteManyModel.
+func (dmm *DeleteManyModel) SetCollation(collation *options.Collation) *DeleteManyModel {
+	dmm.Collation = collation
+	return dmm
+}
+
+func (dmm *DeleteManyModel) convertModel() driver.WriteModel {
+	return driver.DeleteManyModel{
+		Collation: dmm.Collation,
+		Filter:    dmm.Filter,
+	}
+}
+
+// ReplaceOneModel is the write model for replace operations.
+type ReplaceOneModel struct {
+	Collation   *options.Collation
+	Upsert      *bool
+	Filter      interface{}
+	Replacement interface{}
+}
+
+// NewReplaceOneModel creates a new ReplaceOneModel.
+func NewReplaceOneModel() *ReplaceOneModel {
+	return &ReplaceOneModel{}
+}
+
+// SetFilter sets the filter for the ReplaceOneModel.
+func (rom *ReplaceOneModel) SetFilter(filter interface{}) *ReplaceOneModel {
+	rom.Filter = filter
+	return rom
+}
+
+// SetReplacement sets the replacement document for the ReplaceOneModel.
+func (rom *ReplaceOneModel) SetReplacement(rep interface{}) *ReplaceOneModel {
+	rom.Replacement = rep
+	return rom
+}
+
+// SetCollation sets the collation for the ReplaceOneModel.
+func (rom *ReplaceOneModel) SetCollation(collation *options.Collation) *ReplaceOneModel {
+	rom.Collation = collation
+	return rom
+}
+
+// SetUpsert specifies if a new document should be created if no document matches the query.
+func (rom *ReplaceOneModel) SetUpsert(upsert bool) *ReplaceOneModel {
+	rom.Upsert = &upsert
+	return rom
+}
+
+func (rom *ReplaceOneModel) convertModel() driver.WriteModel {
+	um := driver.UpdateModel{
+		Collation: rom.Collation,
+	}
+	if rom.Upsert != nil {
+		um.Upsert = *rom.Upsert
+		um.UpsertSet = true
+	}
+
+	return driver.ReplaceOneModel{
+		UpdateModel: um,
+		Filter:      rom.Filter,
+		Replacement: rom.Replacement,
+	}
+}
+
+// UpdateOneModel is the write model for update operations.
+type UpdateOneModel struct {
+	Collation    *options.Collation
+	Upsert       *bool
+	Filter       interface{}
+	Update       interface{}
+	ArrayFilters *options.ArrayFilters
+}
+
+// NewUpdateOneModel creates a new UpdateOneModel.
+func NewUpdateOneModel() *UpdateOneModel {
+	return &UpdateOneModel{}
+}
+
+// SetFilter sets the filter for the UpdateOneModel.
+func (uom *UpdateOneModel) SetFilter(filter interface{}) *UpdateOneModel {
+	uom.Filter = filter
+	return uom
+}
+
+// SetUpdate sets the update document for the UpdateOneModel.
+func (uom *UpdateOneModel) SetUpdate(update interface{}) *UpdateOneModel {
+	uom.Update = update
+	return uom
+}
+
+// SetArrayFilters specifies a set of filters specifying to which array elements an update should apply.
+func (uom *UpdateOneModel) SetArrayFilters(filters options.ArrayFilters) *UpdateOneModel {
+	uom.ArrayFilters = &filters
+	return uom
+}
+
+// SetCollation sets the collation for the UpdateOneModel.
+func (uom *UpdateOneModel) SetCollation(collation *options.Collation) *UpdateOneModel {
+	uom.Collation = collation
+	return uom
+}
+
+// SetUpsert specifies if a new document should be created if no document matches the query.
+func (uom *UpdateOneModel) SetUpsert(upsert bool) *UpdateOneModel {
+	uom.Upsert = &upsert
+	return uom
+}
+
+func (uom *UpdateOneModel) convertModel() driver.WriteModel {
+	um := driver.UpdateModel{
+		Collation: uom.Collation,
+	}
+	if uom.Upsert != nil {
+		um.Upsert = *uom.Upsert
+		um.UpsertSet = true
+	}
+
+	converted := driver.UpdateOneModel{
+		UpdateModel: um,
+		Filter:      uom.Filter,
+		Update:      uom.Update,
+	}
+	if uom.ArrayFilters != nil {
+		converted.ArrayFilters = *uom.ArrayFilters
+		converted.ArrayFiltersSet = true
+	}
+
+	return converted
+}
+
+// UpdateManyModel is the write model for updateMany operations.
+type UpdateManyModel struct {
+	Collation    *options.Collation
+	Upsert       *bool
+	Filter       interface{}
+	Update       interface{}
+	ArrayFilters *options.ArrayFilters
+}
+
+// NewUpdateManyModel creates a new UpdateManyModel.
+func NewUpdateManyModel() *UpdateManyModel {
+	return &UpdateManyModel{}
+}
+
+// SetFilter sets the filter for the UpdateManyModel.
+func (umm *UpdateManyModel) SetFilter(filter interface{}) *UpdateManyModel {
+	umm.Filter = filter
+	return umm
+}
+
+// SetUpdate sets the update document for the UpdateManyModel.
+func (umm *UpdateManyModel) SetUpdate(update interface{}) *UpdateManyModel {
+	umm.Update = update
+	return umm
+}
+
+// SetArrayFilters specifies a set of filters specifying to which array elements an update should apply.
+func (umm *UpdateManyModel) SetArrayFilters(filters options.ArrayFilters) *UpdateManyModel {
+	umm.ArrayFilters = &filters
+	return umm
+}
+
+// SetCollation sets the collation for the UpdateManyModel.
+func (umm *UpdateManyModel) SetCollation(collation *options.Collation) *UpdateManyModel {
+	umm.Collation = collation
+	return umm
+}
+
+// SetUpsert specifies if a new document should be created if no document matches the query.
+func (umm *UpdateManyModel) SetUpsert(upsert bool) *UpdateManyModel {
+	umm.Upsert = &upsert
+	return umm
+}
+
+func (umm *UpdateManyModel) convertModel() driver.WriteModel {
+	um := driver.UpdateModel{
+		Collation: umm.Collation,
+	}
+	if umm.Upsert != nil {
+		um.Upsert = *umm.Upsert
+		um.UpsertSet = true
+	}
+
+	converted := driver.UpdateManyModel{
+		UpdateModel: um,
+		Filter:      umm.Filter,
+		Update:      umm.Update,
+	}
+	if umm.ArrayFilters != nil {
+		converted.ArrayFilters = *umm.ArrayFilters
+		converted.ArrayFiltersSet = true
+	}
+
+	return converted
+}
+
+func dispatchToMongoModel(model driver.WriteModel) WriteModel {
+	switch conv := model.(type) {
+	case driver.InsertOneModel:
+		return &InsertOneModel{
+			Document: conv.Document,
+		}
+	case driver.DeleteOneModel:
+		return &DeleteOneModel{
+			Filter:    conv.Filter,
+			Collation: conv.Collation,
+		}
+	case driver.DeleteManyModel:
+		return &DeleteManyModel{
+			Filter:    conv.Filter,
+			Collation: conv.Collation,
+		}
+	case driver.ReplaceOneModel:
+		rom := &ReplaceOneModel{
+			Filter:      conv.Filter,
+			Replacement: conv.Replacement,
+			Collation:   conv.Collation,
+		}
+		if conv.UpsertSet {
+			rom.Upsert = &conv.Upsert
+		}
+		return rom
+	case driver.UpdateOneModel:
+		uom := &UpdateOneModel{
+			Filter:    conv.Filter,
+			Update:    conv.Update,
+			Collation: conv.Collation,
+		}
+		if conv.UpsertSet {
+			uom.Upsert = &conv.Upsert
+		}
+		if conv.ArrayFiltersSet {
+			uom.ArrayFilters = &conv.ArrayFilters
+		}
+		return uom
+	case driver.UpdateManyModel:
+		umm := &UpdateManyModel{
+			Filter:    conv.Filter,
+			Update:    conv.Update,
+			Collation: conv.Collation,
+		}
+		if conv.UpsertSet {
+			umm.Upsert = &conv.Upsert
+		}
+		if conv.ArrayFiltersSet {
+			umm.ArrayFilters = &conv.ArrayFilters
+		}
+		return umm
+	}
+
+	return nil
+}