메트릭 사용방법 변경

client/client.go

@@ -23,6 +23,7 @@ import (
 	"unsafe"
 
 	"repositories.action2quare.com/ayo/gocommon/logger"
+	"repositories.action2quare.com/ayo/gocommon/metric"
 	"repositories.action2quare.com/ayo/houston/shared"
 	"repositories.action2quare.com/ayo/houston/shared/protos"
 
@@ -106,6 +107,7 @@ type houstonClient struct {
 	config         clientConfig
 	version        string
 	standalone     bool
+	metricExporter metric.Exporter
 }
 
 func unmarshal[T any](val *T, src map[string]string) {
@@ -265,6 +267,7 @@ func NewClient(standalone bool) (HoustonClient, error) {
 		timestamp:      exefi.ModTime().String(),
 		version:        string(ver),
 		standalone:     standalone,
+		metricExporter: metric.NewPrometheusExport(clientConfig.MetricNamespace),
 	}
 
 	ctx, cancel := context.WithCancel(context.Background())

client/custom_exporter.go

@@ -1,85 +0,0 @@
-package client
-
-import (
-	"math"
-	_ "net/http/pprof"
-	"sync/atomic"
-	"unsafe"
-
-	"github.com/prometheus/client_golang/prometheus"
-	"repositories.action2quare.com/ayo/gocommon/metric"
-)
-
-type metricDesc struct {
-	*prometheus.Desc
-	val       *uint64
-	valueType prometheus.ValueType
-}
-
-type exporterForPrometheus struct {
-	metricPtr unsafe.Pointer // []metricDesc
-}
-
-func newExporterForPrometheus() *exporterForPrometheus {
-	return &exporterForPrometheus{
-		metricPtr: unsafe.Pointer(new([]metricDesc)),
-	}
-}
-
-type metricValueAccessor struct {
-	ptr *uint64
-}
-
-func (va *metricValueAccessor) set(val float64) {
-	atomic.StoreUint64(va.ptr, math.Float64bits(val))
-}
-
-func convertValueType(in metric.MetricType) prometheus.ValueType {
-	switch in {
-	case metric.MetricCounter:
-		return prometheus.CounterValue
-
-	case metric.MetricGuage:
-		return prometheus.GaugeValue
-	}
-
-	return prometheus.UntypedValue
-}
-
-func (e *exporterForPrometheus) registMetric(namespace string, desc metric.MetricDescription) metricValueAccessor {
-	ptr := atomic.LoadPointer(&e.metricPtr)
-	container := *(*[]metricDesc)(ptr)
-
-	newcont := make([]metricDesc, len(container)+1)
-	copy(newcont, container)
-
-	newval := new(uint64)
-	newcont[len(container)] = metricDesc{
-		Desc:      prometheus.NewDesc(prometheus.BuildFQName(namespace, "", desc.Name), desc.Help, nil, desc.ConstLabels),
-		val:       newval,
-		valueType: convertValueType(desc.Type),
-	}
-
-	atomic.StorePointer(&e.metricPtr, unsafe.Pointer(&newcont))
-	return metricValueAccessor{
-		ptr: newval,
-	}
-}
-
-func (e *exporterForPrometheus) Describe(ch chan<- *prometheus.Desc) {
-	ptr := atomic.LoadPointer(&e.metricPtr)
-	container := *(*[]metricDesc)(ptr)
-
-	for _, v := range container {
-		ch <- v.Desc
-	}
-}
-
-func (e *exporterForPrometheus) Collect(ch chan<- prometheus.Metric) {
-	ptr := atomic.LoadPointer(&e.metricPtr)
-	container := *(*[]metricDesc)(ptr)
-
-	for _, v := range container {
-		ch <- prometheus.MustNewConstMetric(v.Desc, v.valueType, math.Float64frombits(atomic.LoadUint64(v.val)))
-	}
-}

client/operation.go

@@ -4,12 +4,10 @@ import (
 	"archive/zip"
 	"bufio"
 	"context"
-	"encoding/binary"
 	"encoding/json"
 	"errors"
 	"fmt"
 	"io"
-	"math"
 	"net/http"
 	"os"
 	"os/exec"
@@ -20,7 +18,6 @@ import (
 	"syscall"
 	"time"
 
-	"github.com/prometheus/client_golang/prometheus"
 	"repositories.action2quare.com/ayo/gocommon/logger"
 	"repositories.action2quare.com/ayo/gocommon/metric"
 	"repositories.action2quare.com/ayo/houston/shared"
@@ -233,8 +230,6 @@ func (hc *houstonClient) launch(meta *procmeta) error {
 
 		readingMetric := false
 		var metricBuffer []byte
-		metricValues := make(map[string]metricValueAccessor)
-
 		defer func() {
 			logger.Println("stdReader is terminated :", meta.name)
 			if meta.isState(protos.ProcessState_Running) {
@@ -273,27 +268,10 @@ func (hc *houstonClient) launch(meta *procmeta) error {
 							continue
 						}
 
-						if _, registered := metricValues[metric.Key]; !registered {
-							exporter := newExporterForPrometheus()
-							accessor := exporter.registMetric(hc.config.MetricNamespace, metric)
-
-							if err := prometheus.Register(exporter); err != nil {
-								logger.Println("prometheus.Register error :", err)
+						hc.metricExporter.RegisterMetric(&metric)
 					} else {
-								metricValues[metric.Key] = accessor
-								logger.Println("metric registered :", metric)
-							}
-						}
-					} else {
-						keybytes := metricBuffer[:8]
-						valbits := binary.LittleEndian.Uint64(metricBuffer[8:])
-						val := math.Float64frombits(valbits)
-
-						if accessor, ok := metricValues[string(keybytes)]; ok {
-							accessor.set(val)
-						} else {
-							logger.Println("metric set but unregistered :", string(keybytes))
-						}
+						key, val := metric.ReadMetricValue(metricBuffer)
+						hc.metricExporter.UpdateMetric(key, val)
 					}
 
 					metricBuffer = metricBuffer[:0]

go.mod

@@ -10,7 +10,7 @@ require (
 	golang.org/x/text v0.10.0
 	google.golang.org/grpc v1.56.0
 	google.golang.org/protobuf v1.31.0
-	repositories.action2quare.com/ayo/gocommon v0.0.0-20231127145009-2c0211678122
+	repositories.action2quare.com/ayo/gocommon v0.0.0-20231128132952-e5a5240f96d8
 )
 
 require (

go.sum

@@ -120,5 +120,5 @@ gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 howett.net/plist v1.0.0 h1:7CrbWYbPPO/PyNy38b2EB/+gYbjCe2DXBxgtOOZbSQM=
 howett.net/plist v1.0.0/go.mod h1:lqaXoTrLY4hg8tnEzNru53gicrbv7rrk+2xJA/7hw9g=
-repositories.action2quare.com/ayo/gocommon v0.0.0-20231127145009-2c0211678122 h1:pbROgLih1x7ooXNrKBO7sPK6bOW5bzuMHQY8DKWkRbc=
-repositories.action2quare.com/ayo/gocommon v0.0.0-20231127145009-2c0211678122/go.mod h1:XvklTTSvQX5uviivGBcZo8eIL+mV94W2e4uBBXcT5JY=
+repositories.action2quare.com/ayo/gocommon v0.0.0-20231128132952-e5a5240f96d8 h1:GbvfiscAV/gquGzC9bJ3RTNtezLcdfGOv+9JmAZYQVc=
+repositories.action2quare.com/ayo/gocommon v0.0.0-20231128132952-e5a5240f96d8/go.mod h1:XvklTTSvQX5uviivGBcZo8eIL+mV94W2e4uBBXcT5JY=