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package sequence
import (
"sync"
)
// just for testing
type MemorySequencer struct {
counter uint64
sequenceLock sync.Mutex
}
func NewMemorySequencer() (m *MemorySequencer) {
m = &MemorySequencer{counter: 1}
return
}
func (m *MemorySequencer) NextFileId(count uint64) uint64 {
m.sequenceLock.Lock()
defer m.sequenceLock.Unlock()
ret := m.counter
m.counter += count
return ret
}
func (m *MemorySequencer) SetMax(seenValue uint64) {
m.sequenceLock.Lock()
defer m.sequenceLock.Unlock()
if m.counter <= seenValue {
m.counter = seenValue + 1
}
}
func (m *MemorySequencer) Peek() uint64 {
return m.counter
}
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