PERF: Improve speed and simplify lambda api key authorizer

This moves the table instantiation into the main body of the code
to cache it in the lambda execution environment.

Also inline the simple functions and remove the unnecessary logger.

Author: greglucas

sds_data_manager/lambda_code/authorization/lambda_api_key_authorizer.py

@@ -1,26 +1,11 @@
 """Authorization for API Keys within the SDS."""
 
-import logging
-
 import boto3
 
-logger = logging.getLogger(__name__)
-logger.setLevel(logging.INFO)
-
 # Initialize DynamoDB resource
-TABLE_NAME = "imap-sdc-api-keys"
-
-
-def get_api_key_metadata(api_key):
-    """Retrieve API key metadata from DynamoDB."""
-    try:
-        dynamodb = boto3.resource("dynamodb")
-        table = dynamodb.Table(TABLE_NAME)
-        response = table.get_item(Key={"api_key": api_key})
-        return response.get("Item")
-    except Exception as e:
-        logger.error(f"Error retrieving API key metadata: {e}")
-        return None
+# Specifically outside of the handler to be cached in the lambda execution environment
+dynamodb = boto3.resource("dynamodb")
+table = dynamodb.Table("imap-sdc-api-keys")
 
 
 def lambda_handler(event, context):
@@ -31,7 +16,11 @@ def lambda_handler(event, context):
         return {"isAuthorized": False}
 
     # Retrieve metadata from DynamoDB
-    metadata = get_api_key_metadata(api_key)
+    try:
+        metadata = table.get_item(Key={"api_key": api_key}).get("Item")
+    except Exception:
+        # Log? print(f"Error retrieving API key metadata: {e}")
+        return {"isAuthorized": False}
     if not metadata:
         return {"isAuthorized": False}