30 lines
541 B
Go
30 lines
541 B
Go
package uniqueid
|
|
|
|
import (
|
|
"sync"
|
|
)
|
|
|
|
var singletonMutex sync.Mutex
|
|
var idGenerator *DefaultIdGenerator
|
|
|
|
// SetIdGenerator .
|
|
func SetIdGenerator(options *IdGeneratorOptions) {
|
|
singletonMutex.Lock()
|
|
idGenerator = NewDefaultIdGenerator(options)
|
|
singletonMutex.Unlock()
|
|
}
|
|
|
|
// NextId .
|
|
func NextId() int64 {
|
|
if idGenerator == nil {
|
|
singletonMutex.Lock()
|
|
defer singletonMutex.Unlock()
|
|
if idGenerator == nil {
|
|
options := NewIdGeneratorOptions(1)
|
|
idGenerator = NewDefaultIdGenerator(options)
|
|
}
|
|
}
|
|
|
|
return idGenerator.NewLong()
|
|
}
|