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metrics.go
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/
metrics.go
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package loop3
import (
"encoding/binary"
"github.com/michaelquigley/pfxlog"
"github.com/openziti/ziti/common/pb/mgmt_pb"
"github.com/openziti/sdk-golang/ziti"
"github.com/pkg/errors"
"github.com/rcrowley/go-metrics"
"google.golang.org/protobuf/proto"
"google.golang.org/protobuf/types/known/timestamppb"
"time"
)
var registry = metrics.NewRegistry()
var ConnectionTime = metrics.NewTimer()
var MsgTxRate = metrics.NewMeter()
var MsgRxRate = metrics.NewMeter()
var BytesTxRate = metrics.NewMeter()
var BytesRxRate = metrics.NewMeter()
var MsgLatency = metrics.NewTimer()
func init() {
register := func(name string, metric interface{}) {
if err := registry.Register(name, metric); err != nil {
panic(err)
}
}
register("tx.msg.rate", MsgTxRate)
register("tx.bytes.rate", BytesTxRate)
register("rx.msg.rate", MsgRxRate)
register("rx.bytes.rate", BytesRxRate)
register("msg.latency", MsgLatency)
register("conn.time", ConnectionTime)
}
func StartMetricsReporter(configFile string, metrics *Metrics, closer chan struct{}) error {
if metrics.ReportInterval == 0 {
return errors.New("metrics report interval must be greater than 0")
}
reporter := &zitiMetricsReporter{
configFile: configFile,
clientId: metrics.ClientId,
closer: closer,
service: metrics.Service,
}
go reporter.run(metrics.ReportInterval)
return nil
}
type zitiMetricsReporter struct {
configFile string
clientId string
closer chan struct{}
service string
}
func (r *zitiMetricsReporter) run(reportInterval time.Duration) {
log := pfxlog.Logger()
log.Infof("reporting metrics every %v", reportInterval)
ticker := time.NewTicker(reportInterval)
defer ticker.Stop()
var client ziti.Context
if r.configFile != "" {
sdkConfig, err := ziti.NewConfigFromFile(r.configFile)
if err != nil {
panic(err)
}
client, err = ziti.NewContext(sdkConfig)
if err != nil {
panic(err)
}
} else {
panic("no configuration file provided")
}
conn, err := client.Dial(r.service)
if err != nil {
panic(err)
}
defer func() { _ = conn.Close() }()
lenBuf := make([]byte, 4)
for {
select {
case <-ticker.C:
event := r.createMetricsEvent()
buf, err := proto.Marshal(event)
if err != nil {
log.WithError(err).Error("unable to marshal streaming metrics")
} else {
length := len(buf)
binary.LittleEndian.PutUint32(lenBuf, uint32(length))
log.Infof("sending metrics message with len %v, %+v", length, lenBuf)
if _, err := conn.Write(lenBuf); err != nil {
panic(err)
}
if _, err := conn.Write(buf); err != nil {
panic(err)
}
log.Info("reported metrics")
}
case <-r.closer:
log.Info("stopping metrics reporter")
return
}
}
}
func (r *zitiMetricsReporter) createMetricsEvent() *mgmt_pb.StreamMetricsEvent {
event := &mgmt_pb.StreamMetricsEvent{
Timestamp: timestamppb.Now(),
SourceId: r.clientId,
IntMetrics: map[string]int64{},
FloatMetrics: map[string]float64{},
MetricGroup: map[string]string{},
}
registry.Each(func(name string, i interface{}) {
switch metric := i.(type) {
case metrics.Gauge:
r.addIntMetric(event, name, "value", metric.Value())
case metrics.Meter:
r.addMeterToEvent(event, name, metric)
case metrics.Histogram:
r.addHistogramToEvent(event, name, metric)
case metrics.Timer:
r.addTimerToEvent(event, name, metric)
}
})
return event
}
func (r *zitiMetricsReporter) addMeterToEvent(event *mgmt_pb.StreamMetricsEvent, name string, metric metrics.Meter) {
r.addIntMetric(event, name, "count", metric.Count())
r.addFloatMetric(event, name, "mean_rate", metric.RateMean())
r.addFloatMetric(event, name, "m1_rate", metric.Rate1())
r.addFloatMetric(event, name, "m5_rate", metric.Rate5())
r.addFloatMetric(event, name, "m15_rate", metric.Rate15())
}
func (r *zitiMetricsReporter) addHistogramToEvent(event *mgmt_pb.StreamMetricsEvent, name string, metric metrics.Histogram) {
r.addIntMetric(event, name, "count", metric.Count())
r.addIntMetric(event, name, "min", metric.Min())
r.addIntMetric(event, name, "max", metric.Max())
r.addFloatMetric(event, name, "mean", metric.Mean())
r.addFloatMetric(event, name, "std_dev", metric.StdDev())
r.addFloatMetric(event, name, "variance", metric.Variance())
r.addFloatMetric(event, name, "p50", metric.Percentile(.50))
r.addFloatMetric(event, name, "p75", metric.Percentile(.75))
r.addFloatMetric(event, name, "p95", metric.Percentile(.95))
r.addFloatMetric(event, name, "p99", metric.Percentile(.99))
r.addFloatMetric(event, name, "p999", metric.Percentile(.999))
r.addFloatMetric(event, name, "p9999", metric.Percentile(.9999))
}
func (r *zitiMetricsReporter) addTimerToEvent(event *mgmt_pb.StreamMetricsEvent, name string, metric metrics.Timer) {
r.addIntMetric(event, name, "count", metric.Count())
r.addFloatMetric(event, name, "mean_rate", metric.RateMean())
r.addFloatMetric(event, name, "m1_rate", metric.Rate1())
r.addFloatMetric(event, name, "m5_rate", metric.Rate5())
r.addFloatMetric(event, name, "m15_rate", metric.Rate15())
r.addIntMetric(event, name, "min", metric.Min())
r.addIntMetric(event, name, "max", metric.Max())
r.addFloatMetric(event, name, "mean", metric.Mean())
r.addFloatMetric(event, name, "std_dev", metric.StdDev())
r.addFloatMetric(event, name, "variance", metric.Variance())
r.addFloatMetric(event, name, "p50", metric.Percentile(.50))
r.addFloatMetric(event, name, "p75", metric.Percentile(.75))
r.addFloatMetric(event, name, "p95", metric.Percentile(.95))
r.addFloatMetric(event, name, "p99", metric.Percentile(.99))
r.addFloatMetric(event, name, "p999", metric.Percentile(.999))
r.addFloatMetric(event, name, "p9999", metric.Percentile(.9999))
}
func (r *zitiMetricsReporter) addIntMetric(event *mgmt_pb.StreamMetricsEvent, base, name string, val int64) {
fullName := base + "." + name
event.IntMetrics[fullName] = val
event.MetricGroup[fullName] = base
}
func (r *zitiMetricsReporter) addFloatMetric(event *mgmt_pb.StreamMetricsEvent, base, name string, val float64) {
fullName := base + "." + name
event.FloatMetrics[fullName] = val
event.MetricGroup[fullName] = base
}