Delete all deprecated lambdas

delete_deprecated_lambdas.py

import boto3

def delete_old_nodejs_lambdas():
    client = boto3.client("lambda")
    deprecated_runtimes = {"nodejs12.x", "nodejs14.x", "nodejs16.x"}
    
    # Paginate through all Lambda functions
    paginator = client.get_paginator("list_functions")
    page_iterator = paginator.paginate()
    
    functions_to_delete = []

    for page in page_iterator:
        for function in page["Functions"]:
            function_name = function["FunctionName"]
            if "Runtime" in function:
                runtime = function["Runtime"]
            
                if runtime in deprecated_runtimes:
                    functions_to_delete.append(function_name)
                    print(f"Marked for deletion: {function_name} (Runtime: {runtime})")

    # Confirm before deleting
    if functions_to_delete:
        confirmation = input(f"\nAre you sure you want to delete {len(functions_to_delete)} functions? (yes/no): ").strip().lower()
        if confirmation == "yes":
            for function_name in functions_to_delete:
                delete_lambda(client, function_name)
            print("\nDeletion completed.")
        else:
            print("\nOperation canceled.")
    else:
        print("No deprecated Node.js functions found.")

def delete_lambda(client, function_name):
    """Deletes a Lambda function, handling both standard and edge functions."""
    try:
        # List versions to check if it's an edge function with replicas
        versions = client.list_versions_by_function(FunctionName=function_name)
        
        for version in versions.get("Versions", []):
            version_number = version["Version"]
            
            # Skip $LATEST version
            if version_number == "$LATEST":
                continue
            
            # Attempt to delete function version
            print(f"Deleting version {version_number} of {function_name} ...")
            try:
                client.delete_function(FunctionName=function_name, Qualifier=version_number)
            except client.exceptions.ResourceNotFoundException:
                print(f"Version {version_number} of {function_name} already deleted.")
        
        # Delete the primary function
        print(f"Deleting function: {function_name} ...")
        client.delete_function(FunctionName=function_name)

    except Exception as e:
        print(f"Error deleting {function_name}: {e}")

if __name__ == "__main__":
    delete_old_nodejs_lambdas()

curl -s https://gist.githubusercontent.com/filipeandre/f02807c4836bc4949a05ad9ae67ebeb0/raw/delete_deprecated_lambdas.py > delete_deprecated_lambdas.py && python3 ./delete_deprecated_lambdas.py