added dep, makefile

cmd/cluster.go

@@ -1,6 +1,7 @@
 package cmd
 
 import (
+	crand "crypto/rand"
 	"math/rand"
 	"os"
 	"os/signal"
@@ -9,11 +10,12 @@ import (
 	"sync"
 	"syscall"
 
-	"github.com/hashicorp/serf/serf"
-	"github.com/lbryio/internal-apis/app/crypto"
+	"github.com/lbryio/lbry.go/errors"
 	"github.com/lbryio/reflector.go/cluster"
 
+	"github.com/btcsuite/btcutil/base58"
 	"github.com/davecgh/go-spew/spew"
+	"github.com/hashicorp/serf/serf"
 	log "github.com/sirupsen/logrus"
 	"github.com/spf13/cobra"
 )
@@ -41,7 +43,7 @@ func clusterCmd(cmd *cobra.Command, args []string) {
 	var eventCh <-chan serf.Event
 	var err error
 
-	nodeName := crypto.RandString(12)
+	nodeName := randString(12)
 	clusterAddr := "127.0.0.1:" + strconv.Itoa(clusterPort)
 	if args[0] == clusterStart {
 		c, eventCh, err = cluster.Connect(nodeName, clusterAddr, clusterPort)
@@ -121,3 +123,19 @@ func getAliveMembers(members []serf.Member) []serf.Member {
 	}
 	return alive
 }
+
+// RandString returns a random alphanumeric string of a given length
+func randString(length int) string {
+	buf := make([]byte, length)
+	_, err := crand.Reader.Read(buf)
+	if err != nil {
+		panic(errors.Err(err))
+	}
+
+	randStr := base58.Encode(buf)[:length]
+	if len(randStr) < length {
+		panic(errors.Err("Could not create random string that is long enough"))
+	}
+
+	return randStr
+}