metric 생성자 수정 - pipe 추가

metric/common.go

@@ -2,13 +2,12 @@ package metric
 
 import (
 	"crypto/md5"
-	"encoding/binary"
 	"encoding/hex"
 	"encoding/json"
 	"fmt"
-	"math"
 	"os"
 	"path"
+	"runtime"
 	"sort"
 	"strings"
 	"sync/atomic"
@@ -16,8 +15,6 @@ import (
 	"repositories.action2quare.com/ayo/gocommon/logger"
 )
 
-const metric_value_line_size = 19
-
 type MetricDescription struct {
 	Key         string
 	Type        MetricType
@@ -31,6 +28,32 @@ type Exporter interface {
 	UpdateMetric(string, float64)
 }
 
+type MetricPipe struct {
+	pipe *os.File
+}
+
+func (mp MetricPipe) Close() {
+	mp.pipe.Close()
+}
+
+func (mp MetricPipe) writeLine(line string) {
+	mp.pipe.WriteString(line + "\n")
+}
+
+func NewMetricPipe(pipeName string) MetricPipe {
+	switch runtime.GOOS {
+	case "linux":
+		pipeName = "/tmp/" + pipeName
+	case "windows":
+		pipeName = `\\.\pipe\` + pipeName
+	}
+
+	f, _ := os.Open(pipeName)
+	return MetricPipe{
+		pipe: f,
+	}
+}
+
 type MetricWriter interface {
 	Add(int64)
 	Set(int64)
@@ -44,13 +67,14 @@ func (mw *metric_empty) Add(int64) {}
 var MetricWriterNil = MetricWriter(&metric_empty{})
 
 type metric_int64 struct {
+	key    string
 	valptr *int64
-	buff   [metric_value_line_size]byte
+	pipe   MetricPipe
 }
 
 func (mw *metric_int64) printOut() {
-	binary.LittleEndian.PutUint64(mw.buff[9:], math.Float64bits(float64(atomic.LoadInt64(mw.valptr))))
-	os.Stdout.Write(mw.buff[:])
+	loaded := atomic.LoadInt64(mw.valptr)
+	mw.pipe.writeLine(fmt.Sprintf("%s:%d", mw.key, loaded))
 }
 
 func (mw *metric_int64) Set(newval int64) {
@@ -63,11 +87,16 @@ func (mw *metric_int64) Add(inc int64) {
 	mw.printOut()
 }
 
-func NewMetric(mt MetricType, name string, help string, constLabels map[string]string) (writer MetricWriter) {
+func NewMetric(pipe MetricPipe, mt MetricType, name string, help string, constLabels map[string]string) (writer MetricWriter) {
 	if !metricEnabled {
 		return MetricWriterNil
 	}
 
+	if constLabels == nil {
+		constLabels = map[string]string{}
+	}
+
+	constLabels["pid"] = fmt.Sprintf("%d", os.Getpid())
 	var disorder []struct {
 		k string
 		v string
@@ -100,18 +129,12 @@ func NewMetric(mt MetricType, name string, help string, constLabels map[string]s
 	})
 
 	impl := &metric_int64{
+		key:    key,
 		valptr: new(int64),
+		pipe:   pipe,
 	}
 
-	impl.buff[0] = METRIC_HEAD_INLINE
-	impl.buff[17] = METRIC_TAIL_INLINE
-	impl.buff[18] = '\n'
-	copy(impl.buff[1:], []byte(key))
-
-	output := append([]byte{METRIC_HEAD_INLINE}, temp...)
-	output = append(output, METRIC_TAIL_INLINE, '\n')
-	os.Stdout.Write(output)
-
+	pipe.writeLine(string(temp))
 	// writer
 
 	return impl