Add sleep-before and quiet options

elock.go

@@ -144,7 +144,6 @@ func New(options Options) (*XLock, error) {
  etcdClient: etcdClient,
  }
 
- x.Debug("value: %s", x.lockValue)
  return x, nil
 }
 

main/elock.go

@@ -6,6 +6,7 @@ import (
  "fmt"
  "io/ioutil"
  "log"
+ "math/rand"
  "os"
  "os/exec"
  "os/signal"
@@ -17,7 +18,7 @@ import (
 )
 
 const APP = "elock"
-const VERSION = "0.3.2"
+const VERSION = "0.4.0"
 
 type Config struct {
  EtcdEndpoints []string `json:"etcd-endpoints"`
@@ -41,6 +42,8 @@ func main() {
  remove := flag.Bool("rm", false, "Remove lock by path (from list)")
  zeroExit := flag.Bool("0", false, "Exit code 0 on etcd errors or lock timeout")
  runAnyway := flag.Bool("run-anyway", false, "Run the command even if the lock could not take")
+ sleepBefore := flag.Duration("sleep-before", 0, "Sleep random time (from zero to selected) before lock attempt")
+ quiet := flag.Bool("quiet", false, "Don't print anything")
 
  flag.Usage = func() {
  fmt.Fprintf(os.Stderr, `%s %s
@@ -70,6 +73,19 @@ Usage: %s [options] etcd_key command
  return
  }
 
+ if *quiet {
+ log.SetOutput(ioutil.Discard)
+ }
+
+ if *sleepBefore != 0 {
+ rand.Seed(time.Now().UnixNano())
+ sleepTime := time.Duration(rand.Int63n((*sleepBefore).Nanoseconds()))
+ if *debug {
+ log.Printf("sleep-before: %s", sleepTime.String())
+ }
+ time.Sleep(sleepTime)
+ }
+
  exit := func(code int) {
  if *zeroExit {
  os.Exit(0)