v3.1.0:

- fix exit code at '-version'
- catch sigint & sigterm and exit with zero

CHANGELOG.md

@@ -4,7 +4,14 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
-## [3.0.0] - Unreleased
+## [3.1.0] - 2022-10-04
+### Fixed
+- `main.go` Exit code after showing a version.
+
+### Changed
+- `main.go` Catch both *SIGINT* and *SIGTERM* and exit with **0** code.
+
+## [3.0.0] - 2022-09-30
 ### Changed
 - **-graphiteAddress** takes `hostname:port` pair.
 - Multiple senders allowed by repeating **-graphiteAddress** flag.

main.go

@@ -4,16 +4,18 @@ import (
 	"flag"
 	"fmt"
 	"os"
+	"os/signal"
 	"strconv"
 	"strings"
 	"sync/atomic"
+	"syscall"
 	"time"
 
 	log "github.com/sirupsen/logrus"
 	//	"github.com/pkg/profile"
 )
 
-var version string = "3.0.0"
+var version string = "3.1.0"
 
 var clog, rlog, tlog, stlog *log.Entry
 
@@ -126,7 +128,7 @@ func main() {
 
 	if showVersion {
 		fmt.Println(version)
-		os.Exit(1)
+		os.Exit(0)
 	}
 
 	if jsonLog == true {
@@ -233,6 +235,7 @@ func main() {
 	go runTransformer(inputChan, outputChans, tenant, forceTenant, prefix, immutablePrefix)
 	go runRouter(statsAddress, statsPort)
 	go updateQueue(1)
+	go waitForDeath()
 
 	sleepSeconds := 60
 	clog.WithFields(log.Fields{"sleepSeconds": sleepSeconds}).Info("Starting a waiting loop.")
@@ -268,3 +271,17 @@ func main() {
 		sendStateMetrics(inputChan)
 	}
 }
+
+func waitForDeath() {
+	clog.Info("Starting Wait For Death loop.")
+	cancelChan := make(chan os.Signal, 1)
+	signal.Notify(cancelChan, syscall.SIGTERM, syscall.SIGINT)
+
+	for {
+		time.Sleep(time.Duration(1) * time.Second)
+
+		sig := <-cancelChan
+		clog.WithFields(log.Fields{"signal": sig}).Info("Caught signal. Terminating.")
+		os.Exit(0)
+	}
+}