act_runner/poller/metric.go

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package poller
import "sync/atomic"
// Metric interface
type Metric interface {
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IncBusyWorker() int64
DecBusyWorker() int64
BusyWorkers() int64
}
var _ Metric = (*metric)(nil)
type metric struct {
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busyWorkers int64
}
// NewMetric for default metric structure
func NewMetric() Metric {
return &metric{}
}
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func (m *metric) IncBusyWorker() int64 {
return atomic.AddInt64(&m.busyWorkers, 1)
}
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func (m *metric) DecBusyWorker() int64 {
return atomic.AddInt64(&m.busyWorkers, -1)
}
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func (m *metric) BusyWorkers() int64 {
return atomic.LoadInt64(&m.busyWorkers)
}