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101 lines
3.8 KiB
101 lines
3.8 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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"time"
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"go.mongodb.org/mongo-driver/mongo/readconcern"
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"go.mongodb.org/mongo-driver/mongo/readpref"
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"go.mongodb.org/mongo-driver/mongo/writeconcern"
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)
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// TransactionOptions represents options that can be used to configure a transaction.
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type TransactionOptions struct {
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// The read concern for operations in the transaction. The default value is nil, which means that the default
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// read concern of the session used to start the transaction will be used.
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ReadConcern *readconcern.ReadConcern
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// The read preference for operations in the transaction. The default value is nil, which means that the default
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// read preference of the session used to start the transaction will be used.
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ReadPreference *readpref.ReadPref
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// The write concern for operations in the transaction. The default value is nil, which means that the default
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// write concern of the session used to start the transaction will be used.
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WriteConcern *writeconcern.WriteConcern
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// The default maximum amount of time that a CommitTransaction operation executed in the session can run on the
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// server. The default value is nil, meaning that there is no time limit for execution.
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// The maximum amount of time that a CommitTransaction operation can executed in the transaction can run on the
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// server. The default value is nil, which means that the default maximum commit time of the session used to
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// start the transaction will be used.
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//
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// NOTE(benjirewis): MaxCommitTime will be deprecated in a future release. The more general Timeout option may
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// be used in its place to control the amount of time that a single operation can run before returning an error.
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// MaxCommitTime is ignored if Timeout is set on the client.
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MaxCommitTime *time.Duration
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}
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// Transaction creates a new TransactionOptions instance.
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func Transaction() *TransactionOptions {
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return &TransactionOptions{}
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}
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// SetReadConcern sets the value for the ReadConcern field.
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func (t *TransactionOptions) SetReadConcern(rc *readconcern.ReadConcern) *TransactionOptions {
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t.ReadConcern = rc
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return t
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}
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// SetReadPreference sets the value for the ReadPreference field.
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func (t *TransactionOptions) SetReadPreference(rp *readpref.ReadPref) *TransactionOptions {
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t.ReadPreference = rp
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return t
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}
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// SetWriteConcern sets the value for the WriteConcern field.
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func (t *TransactionOptions) SetWriteConcern(wc *writeconcern.WriteConcern) *TransactionOptions {
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t.WriteConcern = wc
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return t
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}
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// SetMaxCommitTime sets the value for the MaxCommitTime field.
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//
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// NOTE(benjirewis): MaxCommitTime will be deprecated in a future release. The more general Timeout
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// option may be used in its place to control the amount of time that a single operation can run before
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// returning an error. MaxCommitTime is ignored if Timeout is set on the client.
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func (t *TransactionOptions) SetMaxCommitTime(mct *time.Duration) *TransactionOptions {
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t.MaxCommitTime = mct
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return t
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}
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// MergeTransactionOptions combines the given TransactionOptions instances into a single TransactionOptions in a
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// last-one-wins fashion.
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func MergeTransactionOptions(opts ...*TransactionOptions) *TransactionOptions {
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t := Transaction()
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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.ReadConcern != nil {
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t.ReadConcern = opt.ReadConcern
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}
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if opt.ReadPreference != nil {
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t.ReadPreference = opt.ReadPreference
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}
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if opt.WriteConcern != nil {
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t.WriteConcern = opt.WriteConcern
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}
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if opt.MaxCommitTime != nil {
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t.MaxCommitTime = opt.MaxCommitTime
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}
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}
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return t
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}
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