start-pack

myenv/lib/python3.12/site-packages/django/db/__init__.py

@@ -0,0 +1,63 @@
+from django.core import signals
+from django.db.utils import (
+    DEFAULT_DB_ALIAS,
+    DJANGO_VERSION_PICKLE_KEY,
+    ConnectionHandler,
+    ConnectionRouter,
+    DatabaseError,
+    DataError,
+    Error,
+    IntegrityError,
+    InterfaceError,
+    InternalError,
+    NotSupportedError,
+    OperationalError,
+    ProgrammingError,
+)
+from django.utils.connection import ConnectionProxy
+
+__all__ = [
+    "close_old_connections",
+    "connection",
+    "connections",
+    "reset_queries",
+    "router",
+    "DatabaseError",
+    "IntegrityError",
+    "InternalError",
+    "ProgrammingError",
+    "DataError",
+    "NotSupportedError",
+    "Error",
+    "InterfaceError",
+    "OperationalError",
+    "DEFAULT_DB_ALIAS",
+    "DJANGO_VERSION_PICKLE_KEY",
+]
+
+connections = ConnectionHandler()
+
+router = ConnectionRouter()
+
+# For backwards compatibility. Prefer connections['default'] instead.
+connection = ConnectionProxy(connections, DEFAULT_DB_ALIAS)
+
+
+# Register an event to reset saved queries when a Django request is started.
+def reset_queries(**kwargs):
+    for conn in connections.all(initialized_only=True):
+        conn.queries_log.clear()
+
+
+signals.request_started.connect(reset_queries)
+
+
+# Register an event to reset transaction state and close connections past
+# their lifetime.
+def close_old_connections(**kwargs):
+    for conn in connections.all(initialized_only=True):
+        conn.close_if_unusable_or_obsolete()
+
+
+signals.request_started.connect(close_old_connections)
+signals.request_finished.connect(close_old_connections)