add workspace, validation

uuid.go

@@ -0,0 +1,18 @@
+package validate
+
+import (
+	"errors"
+	"regexp"
+)
+
+var uuidRegexp = regexp.MustCompile("^[a-f0-9]{8}(-[a-f0-9]{4}){3}-[a-f0-9]{12}$")
+
+// UUID validates a UUID string.
+// The UUID must be formatted with separators.
+func UUID(value string) error {
+	if !uuidRegexp.MatchString(value) {
+		return errors.New("Invalid UUID")
+	}
+
+	return nil
+}