func (this *ConsumerMetrics) WriteJSON(reportingInterval time.Duration, writer io.Writer) {
tick := time.Tick(reportingInterval)
stop := make(chan struct{})
inLock(&this.metricLock, func() {
this.reportingStopChannels = append(this.reportingStopChannels, stop)
})
for {
select {
case <-tick:
metrics.WriteJSONOnce(this.registry, writer)
case <-stop:
return
}
}
}
// ToJSON returns a representation of all the metrics in JSON format.
func (m *MetricTags) ToJSON() []byte {
buf := bytes.NewBuffer(nil)
metrics.WriteJSONOnce(m.registry, buf)
return buf.Bytes()
}