Update README.md

services/providers/hosting/rules/aws/README.md

@@ -1 +1,51 @@
+## Template
+
+```
+from aws_cdk import core
+import boto3
+
+class InfoRetrievalStack(core.Stack):
+
+    def __init__(self, scope: core.Construct, id: str, info_function, **kwargs) -> None:
+        super().__init__(scope, id, **kwargs)
+        
+        # Initialize a boto3 session
+        session = boto3.Session()
+        client = session.client('service_name')  # Replace 'service_name' with the desired AWS service
+
+        # Retrieve information from the AWS service
+        response = client.describe_something()  # Replace 'describe_something' with the desired method call
+
+        # Call the info_function with the client and response data
+        info_function(client, response)
+
+def example_info_function(client, response):
+    # Example function to process response data
+    # Replace this with your custom logic
+    print(response)
+
+app = core.App()
+
+# Initialize stack with the example function
+InfoRetrievalStack(app, "InfoRetrievalStack", example_info_function)
+
+app.synth()
+
+```
+
+### Explanation:
+
+1. **InfoRetrievalStack Class**: This is the main stack class. It initializes a boto3 session and a generic AWS client, retrieves information from the specified AWS service, and calls a user-defined function (`info_function`) to process the response data.
+2. **info_function Parameter**: This parameter allows you to pass any function that takes `client` and `response` as arguments and performs specific operations.
+3. **example_info_function**: This is a placeholder function to demonstrate how you can process the retrieved data. You can replace this with your custom function to perform the desired operations.
+4. **App Initialization**: In the `app` initialization section, the `InfoRetrievalStack` is created, and the `example_info_function` is passed as the `info_function` argument. You can replace `example_info_function` with your custom function.
+
+### Usage:
+
+- **Define Custom Functions**: Replace `example_info_function` with your custom function that processes the AWS service response data in the way you need.
+- **Specify AWS Service and Method**: Replace `'service_name'` with the desired AWS service (e.g., `ec2`, `s3`, etc.) and `describe_something` with the method call you want to use (e.g., `describe_instances`, `list_buckets`, etc.).
+- **Create Multiple Stacks**: You can create multiple instances of `InfoRetrievalStack` with different functions to retrieve various types of information.
+- **Deploy**: Run `cdk deploy` to deploy your stack.
+
+This template provides a minimal starting point with placeholders, making it flexible and easy to adapt for different AWS services and data retrieval requirements.