f Extract max key len to const

Author: tnull

lightning-persister/src/utils.rs

@@ -1,8 +1,10 @@
 use lightning::util::persist::KVSTORE_NAMESPACE_KEY_ALPHABET;
 use lightning::util::string::PrintableString;
 
+const KVSTORE_MAX_KEY_LEN: usize = 120;
+
 pub(crate) fn is_valid_kvstore_str(key: &str) -> bool {
-	key.len() <= 120 && key.chars().all(|c| KVSTORE_NAMESPACE_KEY_ALPHABET.contains(c))
+	key.len() <= KVSTORE_MAX_KEY_LEN && key.chars().all(|c| KVSTORE_NAMESPACE_KEY_ALPHABET.contains(c))
 }
 
 pub(crate) fn check_namespace_key_validity(namespace: &str, sub_namespace: &str, key: Option<&str>, operation: &str) -> Result<(), std::io::Error> {