1 files changed, 24 insertions, 0 deletions
diff --git a/vendor/github.com/mitchellh/packer/common/uuid/uuid.go b/vendor/github.com/mitchellh/packer/common/uuid/uuid.go
new file mode 100644
index 00000000..d8b9830b
--- /dev/null
+++ b/vendor/github.com/mitchellh/packer/common/uuid/uuid.go
@@ -0,0 +1,24 @@
+package uuid
+
+import (
+	"crypto/rand"
+	"fmt"
+	"time"
+)
+
+// Generates a time ordered UUID. Top 32 bits are a timestamp,
+// bottom 96 are random.
+func TimeOrderedUUID() string {
+	unix := uint32(time.Now().UTC().Unix())
+
+	b := make([]byte, 12)
+	n, err := rand.Read(b)
+	if n != len(b) {
+		err = fmt.Errorf("Not enough entropy available")
+	}
+	if err != nil {
+		panic(err)
+	}
+	return fmt.Sprintf("%08x-%04x-%04x-%04x-%04x%08x",
+		unix, b[0:2], b[2:4], b[4:6], b[6:8], b[8:])
+}