create pool only once and update timvt/tifeatures version

stack/app.py

@@ -187,6 +187,10 @@ def __init__(
             ).to_string(),
         }
 
+        env = {}
+        env["DB_MIN_CONN_SIZE"] = "1"
+        env["DB_MAX_CONN_SIZE"] = "1"
+
         api_function = aws_lambda.Function(
             self,
             f"{id}-vector-lambda",
@@ -201,6 +205,7 @@ def __init__(
             handler="handler.handler",
             memory_size=api_settings.memory,
             timeout=core.Duration.seconds(api_settings.timeout),
+            environment=env,
             log_retention=logs.RetentionDays.ONE_WEEK,
         )
         for k, v in db_secrets.items():

stack/app/handler.py

@@ -1,7 +1,10 @@
 
+import os
+import asyncio
+
 from tifeatures.db import close_db_connection, connect_to_db, register_table_catalog
-from tifeatures.factory import Endpoints
-from timvt.factory import VectorTilerFactory
+from tifeatures.factory import Endpoints as FeaturesEndpoints
+# from timvt.factory import VectorTilerFactory
 from fastapi import FastAPI
 from starlette_cramjam.middleware import CompressionMiddleware
 
@@ -14,8 +17,8 @@
 )
 
 # Register endpoints.
-endpoints = Endpoints()
-app.include_router(endpoints.router, tags=["Features"])
+endpoints = FeaturesEndpoints()
+app.include_router(endpoints.router, tags=["OGC Features"])
 
 # By default the VectorTilerFactory will only create tiles/ and tilejson.json endpoints
 # mvt_endpoints = VectorTilerFactory()
@@ -39,4 +42,8 @@ async def shutdown_event() -> None:
     await close_db_connection(app)
 
 
-handler = Mangum(app)
+handler = Mangum(app, lifespan="off")
+
+if "AWS_EXECUTION_ENV" in os.environ:
+    loop = asyncio.get_event_loop()
+    loop.run_until_complete(app.router.startup())

stack/app/requirements.txt

@@ -1,4 +1,4 @@
-timvt @ git+https://github.com/developmentseed/timvt
-tifeatures @ git+https://github.com/developmentseed/tifeatures
+timvt==0.8.0a2
+tifeatures==0.1.0a2
 
 mangum>=0.10.0