30 lines
539 B
Go
30 lines
539 B
Go
package idgen
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import (
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"sync"
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)
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var singletonMutex sync.Mutex
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var idGenerator *DefaultIdGenerator
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// SetIdGenerator .
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func SetIdGenerator(options *IdGeneratorOptions) {
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singletonMutex.Lock()
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idGenerator = NewDefaultIdGenerator(options)
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singletonMutex.Unlock()
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}
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// NextId .
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func NextId() uint64 {
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if idGenerator == nil {
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singletonMutex.Lock()
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defer singletonMutex.Unlock()
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if idGenerator == nil {
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options := NewIdGeneratorOptions(1)
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idGenerator = NewDefaultIdGenerator(options)
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}
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}
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return idGenerator.NewLong()
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}
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