You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
37 lines
914 B
37 lines
914 B
// 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 session
|
|
|
|
import (
|
|
"sync"
|
|
|
|
"go.mongodb.org/mongo-driver/bson"
|
|
)
|
|
|
|
// ClusterClock represents a logical clock for keeping track of cluster time.
|
|
type ClusterClock struct {
|
|
clusterTime bson.Raw
|
|
lock sync.Mutex
|
|
}
|
|
|
|
// GetClusterTime returns the cluster's current time.
|
|
func (cc *ClusterClock) GetClusterTime() bson.Raw {
|
|
var ct bson.Raw
|
|
cc.lock.Lock()
|
|
ct = cc.clusterTime
|
|
cc.lock.Unlock()
|
|
|
|
return ct
|
|
}
|
|
|
|
// AdvanceClusterTime updates the cluster's current time.
|
|
func (cc *ClusterClock) AdvanceClusterTime(clusterTime bson.Raw) {
|
|
cc.lock.Lock()
|
|
cc.clusterTime = MaxClusterTime(cc.clusterTime, clusterTime)
|
|
cc.lock.Unlock()
|
|
}
|