Add custom authoriser

.project-version

@@ -1 +1 @@
-0.0.1
+0.0.2

serverless.yml

@@ -11,13 +11,19 @@ provider:
   runtime: python3.8
 
 functions:
+  auth:
+    handler: src/functions/auth.handler
+
   get:
     handler: src/functions/hello_world.handler
     events:
       - http:
           path: hello-world
           method: get
           cors: true
+          authorizer:
+            name: auth
+            type: request
 
   post:
     handler: src/functions/add.handler

src/functions/auth.py

@@ -0,0 +1,37 @@
+"""
+Provide handler for the auth method.
+"""
+from typing import Any, Dict
+
+from aws_lambda_powertools.utilities.typing import LambdaContext
+
+
+def handler(event: Dict[str, Any], context: LambdaContext) -> Dict[str, Any]:
+    """
+    Lambda function handler.
+
+    Arguments:
+        event (dict): the event with data to process.
+        context (LambdaContext): the information about the invocation, function, and runtime environment.
+
+    Returns:
+        The response as dict.
+    """
+    # auth_token = ...
+    resource = event.get('methodArn')
+    principal_id = None
+    effect = 'Allow'
+    response = {
+        'principalId': principal_id,
+        'policyDocument': {
+            'Version': '2022-02-14',
+            'Statement': [
+                {
+                    'Action': 'execute-api:Invoke',
+                    'Effect': effect,
+                    'Resource': resource,
+                },
+            ],
+        },
+    }
+    return response

src/utils/auth.py

@@ -0,0 +1,3 @@
+"""
+Provide utils for authentication.
+"""