feat(publisher): add pprof to enable profiling

Author: aledbf

publisher/image/Dockerfile

@@ -1,5 +1,9 @@
 FROM alpine:3.1
 
+# install curl in the image so it is possible to get the runtime
+# profiling information without any additional package installation.
+RUN apk add --update-cache curl && rm -rf /var/cache/apk/*
+
 ADD bin/publisher /usr/local/bin/publisher
 ENTRYPOINT ["/usr/local/bin/publisher"]
 

publisher/main.go

@@ -3,6 +3,8 @@ package main
 import (
 	"flag"
 	"log"
+	"net/http"
+	_ "net/http/pprof"
 	"time"
 
 	"github.com/coreos/go-etcd/etcd"
@@ -44,6 +46,10 @@ func main() {
 
 	go server.Listen(*etcdTTL)
 
+	go func() {
+		log.Println(http.ListenAndServe("localhost:6060", nil))
+	}()
+
 	for {
 		go server.Poll(*etcdTTL)
 		time.Sleep(*refreshDuration)