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43 lines
973 B
43 lines
973 B
/* This module keeps all struct used as singleton */
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package utils
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import (
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"sync"
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"sync/atomic"
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"github.com/harmony-one/harmony/log"
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)
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// UniqueValidatorID defines the structure of unique validator ID
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type UniqueValidatorID struct {
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uniqueID uint32
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}
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var validatorIDInstance *UniqueValidatorID
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var logInstance log.Logger
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var onceForUniqueValidatorID sync.Once
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var onceForLog sync.Once
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// GetUniqueValidatorIDInstance returns a singleton instance
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func GetUniqueValidatorIDInstance() *UniqueValidatorID {
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onceForUniqueValidatorID.Do(func() {
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validatorIDInstance = &UniqueValidatorID{
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uniqueID: 0,
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}
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})
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return validatorIDInstance
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}
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// GetUniqueID returns a unique ID and increment the internal variable
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func (s *UniqueValidatorID) GetUniqueID() uint32 {
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return atomic.AddUint32(&s.uniqueID, 1)
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}
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// GetLogInstance returns logging singleton.
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func GetLogInstance() log.Logger {
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onceForLog.Do(func() {
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logInstance = log.New()
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})
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return logInstance
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}
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