localstack-core

import logging from localstack.extensions.api import Extension LOG = logging.getLogger(__name__) class ReadyAnnouncerExtension(Extension): name = "my_ready_announcer" def on_platform_ready(self): LOG.info("My custom extension is loaded and LocalStack is ready!") # To run this, you would typically save it as a Python file (e.g., my_extension.py) # and install it as a LocalStack extension, often via the LocalStack CLI: # 1. Ensure LocalStack CLI is installed: pip install localstack # 2. Start LocalStack (requires Docker): localstack start # 3. Install the extension using its entry point configuration (e.g., in setup.py/cfg) # or directly from a file/git repo using `localstack extensions install`. # For demonstration, if packaged: # localstack extensions install my-ready-announcer # (This example shows the Python code for an extension, not how to run a standalone script with localstack-core) # A more direct, though less common, 'quickstart' for *using* LocalStack from Python # would involve the AWS SDK (boto3) configured to talk to LocalStack endpoints. # This is typically done with `awslocal` or direct endpoint configuration. # Example for boto3 (requires LocalStack running): # import boto3 # import os # # os.environ['AWS_ACCESS_KEY_ID'] = 'test' # os.environ['AWS_SECRET_ACCESS_KEY'] = 'test' # os.environ['AWS_DEFAULT_REGION'] = 'us-east-1' # # s3_client = boto3.client('s3', endpoint_url='http://localhost:4566') # try: # response = s3_client.list_buckets() # print(f"S3 Buckets (LocalStack): {response['Buckets']}") # except Exception as e: # print(f"Error connecting to LocalStack S3: {e}")