chore: add build_table_route_prefix (#1269)

src/meta-srv/src/keys.rs

@@ -178,6 +178,15 @@ pub(crate) fn to_removed_key(key: &str) -> String {
     format!("{REMOVED_PREFIX}-{key}")
 }
 
+pub fn build_table_route_prefix(catalog: impl AsRef<str>, schema: impl AsRef<str>) -> String {
+    format!(
+        "{}-{}-{}-",
+        TABLE_ROUTE_PREFIX,
+        catalog.as_ref(),
+        schema.as_ref()
+    )
+}
+
 #[derive(Eq, PartialEq, Debug, Clone, Hash, Copy)]
 pub struct StatKey {
     pub cluster_id: u64,
@@ -279,6 +288,14 @@ impl TryFrom<Vec<u8>> for StatValue {
 mod tests {
     use super::*;
 
+    #[test]
+    fn test_build_prefix() {
+        assert_eq!(
+            "__meta_table_route-CATALOG-SCHEMA-",
+            build_table_route_prefix("CATALOG", "SCHEMA")
+        )
+    }
+
     #[test]
     fn test_stat_key_round_trip() {
         let key = StatKey {