func getGraphiteSendForCounter(cnt *counters.Counters, input string) (string, int64) {
// Some data with expected sum of 6
d := []byte(input)
packets := udp.ParseMessage(d, prefix_internal, output, udp.ParseLine)
for _, p := range packets {
cnt.Add(p)
}
var buf []byte
buf, num := cnt.Process(buf, 1, 10)
return string(buf), num
}
// metricsMonitor basically guards the metrics datastructures.
// it typically receives metrics on the Metrics channel but also responds to
// external signals and every flushInterval, computes and flushes the data
func (s *StatsDaemon) metricsMonitor() {
period := time.Duration(s.flushInterval) * time.Second
tick := ticker.GetAlignedTicker(s.Clock, period)
var c *counters.Counters
var g *gauges.Gauges
var t *timers.Timers
oneCounter := &common.Metric{
Bucket: fmt.Sprintf("%sdirection_is_in.statsd_type_is_counter.target_type_is_count.unit_is_Metric", s.prefix),
Value: 1,
Sampling: 1,
}
oneGauge := &common.Metric{
Bucket: fmt.Sprintf("%sdirection_is_in.statsd_type_is_gauge.target_type_is_count.unit_is_Metric", s.prefix),
Value: 1,
Sampling: 1,
}
oneTimer := &common.Metric{
Bucket: fmt.Sprintf("%sdirection_is_in.statsd_type_is_timer.target_type_is_count.unit_is_Metric", s.prefix),
Value: 1,
Sampling: 1,
}
initializeCounters := func() {
c = counters.New(s.prefix_rates, s.prefix_counters, s.legacy_namespace, s.flush_rates, s.flush_counts)
g = gauges.New(s.prefix_gauges)
t = timers.New(s.prefix_timers, s.pct)
for _, name := range []string{"timer", "gauge", "counter"} {
c.Add(&common.Metric{
Bucket: fmt.Sprintf("%sdirection_is_in.statsd_type_is_%s.target_type_is_count.unit_is_Metric", s.prefix, name),
Sampling: 1,
})
}
}
initializeCounters()
for {
select {
case sig := <-s.signalchan:
switch sig {
case syscall.SIGTERM, syscall.SIGINT:
fmt.Printf("!! Caught signal %s... shutting down\n", sig)
s.submitFunc(c, g, t, s.Clock.Now().Add(period))
return
default:
fmt.Printf("unknown signal %s, ignoring\n", sig)
}
case <-tick.C:
go func(c *counters.Counters, g *gauges.Gauges, t *timers.Timers) {
s.submitFunc(c, g, t, s.Clock.Now().Add(period))
s.events.Broadcast <- "flush"
}(c, g, t)
initializeCounters()
tick = ticker.GetAlignedTicker(s.Clock, period)
case metrics := <-s.Metrics:
for _, m := range metrics {
if m.Modifier == "ms" {
t.Add(m)
c.Add(oneTimer)
} else if m.Modifier == "g" {
g.Add(m)
c.Add(oneGauge)
} else {
c.Add(m)
c.Add(oneCounter)
}
}
}
}
}