add try/expect to avoid failure in startup

cerulean_cloud/cloud_run_tipg/handler.py

@@ -10,6 +10,7 @@
 
 """
 import logging
+import warnings
 from typing import Any, List, Optional
 
 import jinja2
@@ -109,20 +110,24 @@ class Config:
 @app.on_event("startup")
 async def startup_event() -> None:
     """Connect to database on startup."""
-    await connect_to_db(app, settings=postgres_settings)
-    assert getattr(app.state, "pool", None)
-
-    await register_collection_catalog(
-        app,
-        schemas=db_settings.schemas,
-        exclude_table_schemas=db_settings.exclude_table_schemas,
-        tables=db_settings.tables,
-        exclude_tables=db_settings.exclude_tables,
-        exclude_function_schemas=db_settings.exclude_function_schemas,
-        functions=db_settings.functions,
-        exclude_functions=db_settings.exclude_functions,
-        spatial=False,  # False means allow non-spatial tables
-    )
+    try:
+        await connect_to_db(app, settings=postgres_settings)
+        assert getattr(app.state, "pool", None)
+
+        await register_collection_catalog(
+            app,
+            schemas=db_settings.schemas,
+            exclude_table_schemas=db_settings.exclude_table_schemas,
+            tables=db_settings.tables,
+            exclude_tables=db_settings.exclude_tables,
+            exclude_function_schemas=db_settings.exclude_function_schemas,
+            functions=db_settings.functions,
+            exclude_functions=db_settings.exclude_functions,
+            spatial=False,  # False means allow non-spatial tables
+        )
+    except:  # noqa
+        warnings.warn("Could not initiate TiPg", UserWarning)
+        pass
 
 
 @app.on_event("shutdown")