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// 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 options
import (
"time"
"go.mongodb.org/mongo-driver/mongo/readconcern"
"go.mongodb.org/mongo-driver/mongo/readpref"
"go.mongodb.org/mongo-driver/mongo/writeconcern"
)
// TransactionOptions represents options that can be used to configure a transaction.
type TransactionOptions struct {
// The read concern for operations in the transaction. The default value is nil, which means that the default
// read concern of the session used to start the transaction will be used.
ReadConcern *readconcern.ReadConcern
// The read preference for operations in the transaction. The default value is nil, which means that the default
// read preference of the session used to start the transaction will be used.
ReadPreference *readpref.ReadPref
// The write concern for operations in the transaction. The default value is nil, which means that the default
// write concern of the session used to start the transaction will be used.
WriteConcern *writeconcern.WriteConcern
// The default maximum amount of time that a CommitTransaction operation executed in the session can run on the
// server. The default value is nil, meaning that there is no time limit for execution.
// The maximum amount of time that a CommitTransaction operation can executed in the transaction can run on the
// server. The default value is nil, which means that the default maximum commit time of the session used to
// start the transaction will be used.
MaxCommitTime *time.Duration
}
// Transaction creates a new TransactionOptions instance.
func Transaction() *TransactionOptions {
return &TransactionOptions{}
}
// SetReadConcern sets the value for the ReadConcern field.
func (t *TransactionOptions) SetReadConcern(rc *readconcern.ReadConcern) *TransactionOptions {
t.ReadConcern = rc
return t
}
// SetReadPreference sets the value for the ReadPreference field.
func (t *TransactionOptions) SetReadPreference(rp *readpref.ReadPref) *TransactionOptions {
t.ReadPreference = rp
return t
}
// SetWriteConcern sets the value for the WriteConcern field.
func (t *TransactionOptions) SetWriteConcern(wc *writeconcern.WriteConcern) *TransactionOptions {
t.WriteConcern = wc
return t
}
// SetMaxCommitTime sets the value for the MaxCommitTime field.
func (t *TransactionOptions) SetMaxCommitTime(mct *time.Duration) *TransactionOptions {
t.MaxCommitTime = mct
return t
}
// MergeTransactionOptions combines the given TransactionOptions instances into a single TransactionOptions in a
// last-one-wins fashion.
func MergeTransactionOptions(opts ...*TransactionOptions) *TransactionOptions {
t := Transaction()
for _, opt := range opts {
if opt == nil {
continue
}
if opt.ReadConcern != nil {
t.ReadConcern = opt.ReadConcern
}
if opt.ReadPreference != nil {
t.ReadPreference = opt.ReadPreference
}
if opt.WriteConcern != nil {
t.WriteConcern = opt.WriteConcern
}
if opt.MaxCommitTime != nil {
t.MaxCommitTime = opt.MaxCommitTime
}
}
return t
}
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