X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/cc94954f69ed2d26451bae6610b38de260d2252f..dd481ab3359f1b360a22d03c09d8035ef5db1f38:/services/crunchstat/crunchstat.go

diff --git a/services/crunchstat/crunchstat.go b/services/crunchstat/crunchstat.go
index e71989afb8..ad433bb3b5 100644
--- a/services/crunchstat/crunchstat.go
+++ b/services/crunchstat/crunchstat.go
@@ -1,8 +1,13 @@
+// Copyright (C) The Arvados Authors. All rights reserved.
+//
+// SPDX-License-Identifier: AGPL-3.0
+
 package main
 
 import (
 	"bufio"
 	"flag"
+	"fmt"
 	"io"
 	"log"
 	"os"
@@ -19,6 +24,7 @@ const MaxLogLine = 1 << 14 // Child stderr lines >16KiB will be split
 var (
 	signalOnDeadPPID  int = 15
 	ppidCheckInterval     = time.Second
+	version               = "dev"
 )
 
 func main() {
@@ -32,9 +38,18 @@ func main() {
 	flag.IntVar(&signalOnDeadPPID, "signal-on-dead-ppid", signalOnDeadPPID, "Signal to send child if crunchstat's parent process disappears (0 to disable)")
 	flag.DurationVar(&ppidCheckInterval, "ppid-check-interval", ppidCheckInterval, "Time between checks for parent process disappearance")
 	pollMsec := flag.Int64("poll", 1000, "Reporting interval, in milliseconds")
+	getVersion := flag.Bool("version", false, "Print version information and exit.")
 
 	flag.Parse()
 
+	// Print version information if requested
+	if *getVersion {
+		fmt.Printf("crunchstat %s\n", version)
+		return
+	}
+
+	reporter.Logger.Printf("crunchstat %s started", version)
+
 	if reporter.CgroupRoot == "" {
 		reporter.Logger.Fatal("error: must provide -cgroup-root")
 	} else if signalOnDeadPPID < 0 {
@@ -113,7 +128,7 @@ func runCommand(argv []string, logger *log.Logger) error {
 
 func sendSignalOnDeadPPID(intvl time.Duration, signum, ppidOrig int, cmd *exec.Cmd, logger *log.Logger) {
 	ticker := time.NewTicker(intvl)
-	for _ = range ticker.C {
+	for range ticker.C {
 		ppid := os.Getppid()
 		if ppid == ppidOrig {
 			continue