op-exporter version metric

go/op-exporter/Makefile

 SHELL := /bin/bash
 
-VERSION := `git describe --abbrev=0`
+ifndef VERSION
+VERSION := `jq .version package.json `
+endif
+ifndef GITCOMMIT
 GITCOMMIT := `git rev-parse HEAD`
+endif
+ifndef BUILDDATE
 BUILDDATE := `date +%Y-%m-%d`
-BUILDUSER := `whoami`
+endif
 
 LDFLAGSSTRING :=-X github.com/ethereum-optimism/optimism/go/op_exporter/version.Version=$(VERSION)
 LDFLAGSSTRING +=-X github.com/ethereum-optimism/optimism/go/op_exporter/version.GitCommit=$(GITCOMMIT)
 LDFLAGSSTRING +=-X github.com/ethereum-optimism/optimism/go/op_exporter/version.BuildDate=$(BUILDDATE)
-LDFLAGSSTRING +=-X github.com/ethereum-optimism/optimism/go/op_exporter/version.BuildUser=$(BUILDUSER)
 
 LDFLAGS :=-ldflags "$(LDFLAGSSTRING)"
 

go/op-exporter/collector.go

@@ -24,6 +24,12 @@ var (
 			Help: "Is the sequencer healthy?"},
 		[]string{"network"},
 	)
+	opExporterVersion = prometheus.NewCounterVec(
+		prometheus.CounterOpts{
+			Name: "op_exporter_version",
+			Help: "Verion of the op-exporter software"},
+		[]string{"version", "commit", "goVersion", "buildDate"},
+	)
 )
 
 func init() {
@@ -31,4 +37,6 @@ func init() {
 	prometheus.MustRegister(gasPrice)
 	prometheus.MustRegister(blockNumber)
 	prometheus.MustRegister(healthySequencer)
+	prometheus.MustRegister(opExporterVersion)
+
 }

go/op-exporter/main.go

@@ -6,6 +6,7 @@ import (
 	"io/ioutil"
 	"net/http"
 	"os"
+	"strings"
 	"sync"
 	"time"
 
@@ -50,7 +51,7 @@ var (
 	enableK8sQuery = kingpin.Flag(
 		"k8s.enable",
 		"Enable kubernetes info lookup.",
-	).Default("true").Bool()
+	).Default("false").Bool()
 )
 
 type healthCheck struct {
@@ -81,7 +82,8 @@ func main() {
 	log.Infoln("exporter config", *listenAddress, *rpcProvider, *networkLabel)
 	log.Infoln("Starting op_exporter", version.Info())
 	log.Infoln("Build context", version.BuildContext())
-
+	opExporterVersion.WithLabelValues(
+		strings.Trim(version.Version, "\""), version.GitCommit, version.GoVersion, version.BuildDate).Inc()
 	health := healthCheck{
 		mu:             new(sync.RWMutex),
 		height:         0,

go/op-exporter/version/version.go

@@ -8,7 +8,6 @@ import (
 var (
 	Version   string
 	GitCommit string
-	BuildUser string
 	BuildDate string
 	GoVersion = runtime.Version()
 )
@@ -18,5 +17,5 @@ func Info() string {
 }
 
 func BuildContext() string {
-	return fmt.Sprintf("(go=%s, user=%s, date=%s)", GoVersion, BuildUser, BuildDate)
+	return fmt.Sprintf("(go=%s, date=%s)", GoVersion, BuildDate)
 }