You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
56 lines
857 B
56 lines
857 B
package csm
|
|
|
|
import (
|
|
"sync/atomic"
|
|
)
|
|
|
|
const (
|
|
runningEnum = iota
|
|
pausedEnum
|
|
)
|
|
|
|
var (
|
|
// MetricsChannelSize of metrics to hold in the channel
|
|
MetricsChannelSize = 100
|
|
)
|
|
|
|
type metricChan struct {
|
|
ch chan metric
|
|
paused *int64
|
|
}
|
|
|
|
func newMetricChan(size int) metricChan {
|
|
return metricChan{
|
|
ch: make(chan metric, size),
|
|
paused: new(int64),
|
|
}
|
|
}
|
|
|
|
func (ch *metricChan) Pause() {
|
|
atomic.StoreInt64(ch.paused, pausedEnum)
|
|
}
|
|
|
|
func (ch *metricChan) Continue() {
|
|
atomic.StoreInt64(ch.paused, runningEnum)
|
|
}
|
|
|
|
func (ch *metricChan) IsPaused() bool {
|
|
v := atomic.LoadInt64(ch.paused)
|
|
return v == pausedEnum
|
|
}
|
|
|
|
// Push will push metrics to the metric channel if the channel
|
|
// is not paused
|
|
func (ch *metricChan) Push(m metric) bool {
|
|
if ch.IsPaused() {
|
|
return false
|
|
}
|
|
|
|
select {
|
|
case ch.ch <- m:
|
|
return true
|
|
default:
|
|
return false
|
|
}
|
|
}
|