VOL-2496 Add "event listen" command to voltctl
Change-Id: I8f1fb34b55f56c8125142ac289e2f19fc170d804
diff --git a/vendor/github.com/hashicorp/go-uuid/uuid.go b/vendor/github.com/hashicorp/go-uuid/uuid.go
new file mode 100644
index 0000000..911227f
--- /dev/null
+++ b/vendor/github.com/hashicorp/go-uuid/uuid.go
@@ -0,0 +1,65 @@
+package uuid
+
+import (
+ "crypto/rand"
+ "encoding/hex"
+ "fmt"
+)
+
+// GenerateRandomBytes is used to generate random bytes of given size.
+func GenerateRandomBytes(size int) ([]byte, error) {
+ buf := make([]byte, size)
+ if _, err := rand.Read(buf); err != nil {
+ return nil, fmt.Errorf("failed to read random bytes: %v", err)
+ }
+ return buf, nil
+}
+
+const uuidLen = 16
+
+// GenerateUUID is used to generate a random UUID
+func GenerateUUID() (string, error) {
+ buf, err := GenerateRandomBytes(uuidLen)
+ if err != nil {
+ return "", err
+ }
+ return FormatUUID(buf)
+}
+
+func FormatUUID(buf []byte) (string, error) {
+ if buflen := len(buf); buflen != uuidLen {
+ return "", fmt.Errorf("wrong length byte slice (%d)", buflen)
+ }
+
+ return fmt.Sprintf("%x-%x-%x-%x-%x",
+ buf[0:4],
+ buf[4:6],
+ buf[6:8],
+ buf[8:10],
+ buf[10:16]), nil
+}
+
+func ParseUUID(uuid string) ([]byte, error) {
+ if len(uuid) != 2 * uuidLen + 4 {
+ return nil, fmt.Errorf("uuid string is wrong length")
+ }
+
+ if uuid[8] != '-' ||
+ uuid[13] != '-' ||
+ uuid[18] != '-' ||
+ uuid[23] != '-' {
+ return nil, fmt.Errorf("uuid is improperly formatted")
+ }
+
+ hexStr := uuid[0:8] + uuid[9:13] + uuid[14:18] + uuid[19:23] + uuid[24:36]
+
+ ret, err := hex.DecodeString(hexStr)
+ if err != nil {
+ return nil, err
+ }
+ if len(ret) != uuidLen {
+ return nil, fmt.Errorf("decoded hex is the wrong length")
+ }
+
+ return ret, nil
+}