Use UUID instead of machine ID

.travis.yml

@@ -12,7 +12,7 @@ install:
 - go get github.com/gorilla/mux
 - go get github.com/smartystreets/goconvey/convey
 - go get github.com/spf13/cobra
-- go get github.com/denisbrodbeck/machineid
+- go get github.com/satori/go.uuid
 
 before_script:
 - go vet -x ./...

conf/conf.go

@@ -1,12 +1,15 @@
 package conf
 
 import (
+	"io/ioutil"
+	"os"
 	"path"
 	"time"
 
 	client "github.com/coreos/etcd/clientv3"
 	"github.com/fsnotify/fsnotify"
 	"github.com/go-gomail/gomail"
+	"github.com/satori/go.uuid"
 
 	"github.com/shunfei/cronsun/db"
 	"github.com/shunfei/cronsun/event"
@@ -42,6 +45,7 @@ func Init(confFile string, watchConfiFile bool) error {
 }
 
 type Conf struct {
+	dir     string
 	Node    string // node 进程路径
 	Proc    string // 当前执行任务路径
 	Cmd     string // cmd 路径
@@ -136,12 +140,46 @@ func cleanKeyPrefix(p string) string {
 	return p
 }
 
+const UUID_FILE = "CRONSUN_UUID"
+
+func (c *Conf) UUID() (string, error) {
+	b, err := ioutil.ReadFile(path.Join(c.dir, UUID_FILE))
+	if err == nil {
+		if len(b) == 0 {
+			return c.genUUID()
+		}
+		return string(b), nil
+	}
+
+	if !os.IsNotExist(err) {
+		return "", err
+	}
+
+	return c.genUUID()
+}
+
+func (c *Conf) genUUID() (string, error) {
+	u, err := uuid.NewV4()
+	if err != nil {
+		return "", err
+	}
+
+	err = ioutil.WriteFile(path.Join(c.dir, UUID_FILE), []byte(u.String()), 0600)
+	if err != nil {
+		return "", err
+	}
+
+	return u.String(), nil
+}
+
 func (c *Conf) parse(confFile string) error {
 	err := utils.LoadExtendConf(confFile, c)
 	if err != nil {
 		return err
 	}
 
+	c.dir = path.Dir(confFile)
+
 	if c.Etcd.DialTimeout > 0 {
 		c.Etcd.conf.DialTimeout = time.Duration(c.Etcd.DialTimeout) * time.Second
 	}

node/node.go

@@ -7,7 +7,6 @@ import (
 	"time"
 
 	client "github.com/coreos/etcd/clientv3"
-	"github.com/denisbrodbeck/machineid"
 
 	"github.com/shunfei/cronsun"
 	"github.com/shunfei/cronsun/conf"
@@ -36,7 +35,7 @@ type Node struct {
 }
 
 func NewNode(cfg *conf.Conf) (n *Node, err error) {
-	mid, err := machineid.ProtectedID("cronsun")
+	uuid, err := cfg.UUID()
 	if err != nil {
 		return
 	}
@@ -48,14 +47,14 @@ func NewNode(cfg *conf.Conf) (n *Node, err error) {
 
 	hostname, err := os.Hostname()
 	if err != nil {
-		hostname = mid
+		hostname = uuid
 		err = nil
 	}
 
 	n = &Node{
 		Client: cronsun.DefalutClient,
 		Node: &cronsun.Node{
-			ID:       mid,
+			ID:       uuid,
 			PID:      strconv.Itoa(os.Getpid()),
 			IP:       ip.String(),
 			Hostname: hostname,

web/ui/src/components/JobExecuting.vue

@@ -14,8 +14,8 @@
         <input type="text" ref="ids" v-model:value="ids" :placeholder="$L('multiple IDs can separated by commas')"/>
       </div>
       <div class="field">
-        <label>{{$L('select group')}}</label>
-        <Dropdown :title="$L('select group')" v-bind:items="prefetchs.groups" v-on:change="changeGroup" :selected="groups" :multiple="true"/>
+        <label>{{$L('select groups')}}</label>
+        <Dropdown :title="$L('select groups')" v-bind:items="prefetchs.groups" v-on:change="changeGroup" :selected="groups" :multiple="true"/>
       </div>
       <div class="field">
         <label>{{$L('select nodes')}}</label>
@@ -137,4 +137,4 @@ export default {
     Dropdown
   }
 }
-</script>
+</script>

web/ui/src/components/Node.vue

@@ -73,7 +73,7 @@ export default {
     var nodes = this.$store.getters.nodes;
     for (var id in nodes) {
       var n = nodes[id];
-      n.title = n.ip + "\n" + n.id.substr(0, 16) + "\n" + n.version + "\nstarted at: " + n.up
+      n.title = n.ip + "\n" + n.id + "\n" + n.version + "\nstarted at: " + n.up
       if (n.alived && n.connected) {
         vm.groups[2].nodes.push(n);
       } else if (n.alived && !n.connected) {