goext/mongo/internal/csfle_util.go

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2023-06-18 15:50:55 +02:00
// Copyright (C) MongoDB, Inc. 2022-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 internal
import (
"fmt"
"go.mongodb.org/mongo-driver/x/bsonx/bsoncore"
)
const (
EncryptedCacheCollection = "ecc"
EncryptedStateCollection = "esc"
EncryptedCompactionCollection = "ecoc"
)
// GetEncryptedStateCollectionName returns the encrypted state collection name associated with dataCollectionName.
func GetEncryptedStateCollectionName(efBSON bsoncore.Document, dataCollectionName string, stateCollection string) (string, error) {
fieldName := stateCollection + "Collection"
val, err := efBSON.LookupErr(fieldName)
if err != nil {
if err != bsoncore.ErrElementNotFound {
return "", err
}
// Return default name.
defaultName := "enxcol_." + dataCollectionName + "." + stateCollection
return defaultName, nil
}
stateCollectionName, ok := val.StringValueOK()
if !ok {
return "", fmt.Errorf("expected string for '%v', got: %v", fieldName, val.Type)
}
return stateCollectionName, nil
}