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104 lines
3.4 KiB
104 lines
3.4 KiB
// Copyright (C) MongoDB, Inc. 2017-present.
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//
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// Licensed under the Apache License, Version 2.0 (the "License"); you may
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// not use this file except in compliance with the License. You may obtain
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// a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
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package options
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import (
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"go.mongodb.org/mongo-driver/bson/primitive"
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)
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// These constants specify valid values for QueryType
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// QueryType is used for Queryable Encryption.
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// Queryable Encryption is in Public Technical Preview. Queryable Encryption should not be used in production and is subject to backwards breaking changes.
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const (
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QueryTypeEquality string = "equality"
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)
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// EncryptOptions represents options to explicitly encrypt a value.
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type EncryptOptions struct {
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KeyID *primitive.Binary
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KeyAltName *string
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Algorithm string
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QueryType string
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ContentionFactor *int64
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}
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// Encrypt creates a new EncryptOptions instance.
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func Encrypt() *EncryptOptions {
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return &EncryptOptions{}
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}
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// SetKeyID specifies an _id of a data key. This should be a UUID (a primitive.Binary with subtype 4).
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func (e *EncryptOptions) SetKeyID(keyID primitive.Binary) *EncryptOptions {
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e.KeyID = &keyID
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return e
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}
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// SetKeyAltName identifies a key vault document by 'keyAltName'.
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func (e *EncryptOptions) SetKeyAltName(keyAltName string) *EncryptOptions {
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e.KeyAltName = &keyAltName
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return e
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}
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// SetAlgorithm specifies an algorithm to use for encryption. This should be one of the following:
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// - AEAD_AES_256_CBC_HMAC_SHA_512-Deterministic
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// - AEAD_AES_256_CBC_HMAC_SHA_512-Random
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// - Indexed
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// - Unindexed
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// This is required.
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// Indexed and Unindexed are used for Queryable Encryption.
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// Queryable Encryption is in Public Technical Preview. Queryable Encryption should not be used in production and is subject to backwards breaking changes.
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func (e *EncryptOptions) SetAlgorithm(algorithm string) *EncryptOptions {
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e.Algorithm = algorithm
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return e
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}
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// SetQueryType specifies the intended query type. It is only valid to set if algorithm is "Indexed".
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// This should be one of the following:
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// - equality
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// QueryType is used for Queryable Encryption.
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// Queryable Encryption is in Public Technical Preview. Queryable Encryption should not be used in production and is subject to backwards breaking changes.
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func (e *EncryptOptions) SetQueryType(queryType string) *EncryptOptions {
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e.QueryType = queryType
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return e
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}
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// SetContentionFactor specifies the contention factor. It is only valid to set if algorithm is "Indexed".
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// ContentionFactor is used for Queryable Encryption.
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// Queryable Encryption is in Public Technical Preview. Queryable Encryption should not be used in production and is subject to backwards breaking changes.
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func (e *EncryptOptions) SetContentionFactor(contentionFactor int64) *EncryptOptions {
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e.ContentionFactor = &contentionFactor
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return e
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}
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// MergeEncryptOptions combines the argued EncryptOptions in a last-one wins fashion.
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func MergeEncryptOptions(opts ...*EncryptOptions) *EncryptOptions {
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eo := Encrypt()
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for _, opt := range opts {
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if opt == nil {
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continue
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}
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if opt.KeyID != nil {
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eo.KeyID = opt.KeyID
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}
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if opt.KeyAltName != nil {
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eo.KeyAltName = opt.KeyAltName
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}
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if opt.Algorithm != "" {
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eo.Algorithm = opt.Algorithm
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}
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if opt.QueryType != "" {
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eo.QueryType = opt.QueryType
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}
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if opt.ContentionFactor != nil {
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eo.ContentionFactor = opt.ContentionFactor
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}
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}
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return eo
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}
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