refactor(storage): route project DSNs and remove legacy backends

app/native/wndb/connection.py

@@ -4,9 +4,10 @@ from threading import RLock
 
 import psycopg as pg
 
-from app.core.config import get_pgconn_string
+from app.infra.db.project_routing import get_project_pgconn_string
 
 g_conn_dict: dict[str, pg.Connection] = {}
+g_conninfo_dict: dict[str, str] = {}
 _registry_lock = RLock()
 _project_locks: dict[str, RLock] = {}
 
@@ -42,14 +43,18 @@ def _get_project_lock(name: str) -> RLock:
 
 def open_connection(name: str) -> pg.Connection:
     with _get_project_lock(name):
+        conninfo = get_project_pgconn_string(db_name=name)
         connection = g_conn_dict.get(name)
-        if connection is None or not _is_healthy(connection):
+        if (
+            connection is None
+            or g_conninfo_dict.get(name) != conninfo
+            or not _is_healthy(connection)
+        ):
             if connection is not None:
                 _close_connection(connection)
-            connection = pg.connect(
-                conninfo=get_pgconn_string(db_name=name), autocommit=True
-            )
+            connection = pg.connect(conninfo=conninfo, autocommit=True)
             g_conn_dict[name] = connection
+            g_conninfo_dict[name] = conninfo
         return connection
 
 
@@ -60,6 +65,12 @@ def is_connection_open(name: str) -> bool:
             return False
         if not _is_healthy(connection):
             del g_conn_dict[name]
+            g_conninfo_dict.pop(name, None)
+            _close_connection(connection)
+            return False
+        if g_conninfo_dict.get(name) != get_project_pgconn_string(db_name=name):
+            del g_conn_dict[name]
+            g_conninfo_dict.pop(name, None)
             _close_connection(connection)
             return False
         return True
@@ -68,6 +79,7 @@ def is_connection_open(name: str) -> bool:
 def close_connection(name: str) -> None:
     with _get_project_lock(name):
         connection = g_conn_dict.pop(name, None)
+        g_conninfo_dict.pop(name, None)
         if connection is not None:
             _close_connection(connection)