table_catalog error when deploying on AWS Lambda #97

from timvt.db import close_db_connection, connect_to_db, register_table_catalog
from timvt.factory import VectorTilerFactory
from timvt.layer import FunctionRegistry
from fastapi import FastAPI, Request

# Create Application.
app = FastAPI()

# Add Function registry to the application state
app.state.timvt_function_catalog = FunctionRegistry()


# Register Start/Stop application event handler to setup/stop the database connection
# and populate `app.state.table_catalog`
@app.on_event("startup")
async def startup_event():
    """Application startup: register the database connection and create table list."""
    await connect_to_db(app)
    await register_table_catalog(
        app
    )


@app.on_event("shutdown")
async def shutdown_event():
    """Application shutdown: de-register the database connection."""
    await close_db_connection(app)

# Register endpoints.
mvt_tiler = VectorTilerFactory(
    with_tables_metadata=True,
    with_functions_metadata=True,  # add Functions metadata endpoints (/functions.json, /{function_name}.json)
    with_viewer=True,
)
app.include_router(mvt_tiler.router, tags=["Tiles"])

[ERROR]	2022-10-12T13:15:46.051Z	9e67c286-5679-44cd-b502-b709978cea4b	An error occurred running the application.
Traceback (most recent call last):
  File "/var/task/starlette/datastructures.py", line 699, in __getattr__
    return self._state[key]
KeyError: 'table_catalog'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/var/task/mangum/protocols/http.py", line 58, in run
    await app(self.scope, self.receive, self.send)
  File "/var/task/fastapi/applications.py", line 270, in __call__
    await super().__call__(scope, receive, send)
  File "/var/task/starlette/applications.py", line 124, in __call__
    await self.middleware_stack(scope, receive, send)
  File "/var/task/starlette/middleware/errors.py", line 184, in __call__
    raise exc
  File "/var/task/starlette/middleware/errors.py", line 162, in __call__
    await self.app(scope, receive, _send)
  File "/var/task/starlette/middleware/exceptions.py", line 75, in __call__
    raise exc
  File "/var/task/starlette/middleware/exceptions.py", line 64, in __call__
    await self.app(scope, receive, sender)
  File "/var/task/fastapi/middleware/asyncexitstack.py", line 21, in __call__
    raise e
  File "/var/task/fastapi/middleware/asyncexitstack.py", line 18, in __call__
    await self.app(scope, receive, send)
  File "/var/task/starlette/routing.py", line 680, in __call__
    await route.handle(scope, receive, send)
  File "/var/task/starlette/routing.py", line 275, in handle
    await self.app(scope, receive, send)
  File "/var/task/starlette/routing.py", line 65, in app
    response = await func(request)
  File "/var/task/fastapi/routing.py", line 231, in app
    raw_response = await run_endpoint_function(
  File "/var/task/fastapi/routing.py", line 160, in run_endpoint_function
    return await dependant.call(**values)
  File "/var/task/timvt/factory.py", line 232, in tables_index
    for r in request.app.state.table_catalog
  File "/var/task/starlette/datastructures.py", line 702, in __getattr__
    raise AttributeError(message.format(self.__class__.__name__, key))
AttributeError: 'State' object has no attribute 'table_catalog'

[ERROR] Runtime.ImportModuleError: Unable to import module 'handler': No module named 'asyncpg.protocol.protocol'
Traceback (most recent call last):