Config hot reloading API

crates/common/src/expr/mod.rs

@@ -310,7 +310,7 @@ impl<'x> TryFrom<Variable<'x>> for Duration {
             Variable::Integer(value) if value > 0 => Ok(Duration::from_millis(value as u64)),
             Variable::Float(value) if value > 0.0 => Ok(Duration::from_millis(value as u64)),
             Variable::String(value) if !value.is_empty() => {
-                Duration::parse_value("", &value).map_err(|_| ())
+                Duration::parse_value(&value).map_err(|_| ())
             }
             _ => Err(()),
         }

crates/common/src/expr/tokenizer.rs

@@ -336,7 +336,7 @@ impl<'x> Tokenizer<'x> {
                 })
             } else if let Some(token) = self.token_map.tokens.get(buf.as_str()) {
                 Ok(token.clone())
-            } else if let Ok(duration) = Duration::parse_value("", &buf) {
+            } else if let Ok(duration) = Duration::parse_value(&buf) {
                 Ok(Token::Constant(Constant::Integer(
                     duration.as_millis() as i64
                 )))