Filter out redundant global AWS CloudTrail Trails

import boto3 # Replace the following line with the actual list of trails you have #all_trails = [{'Name': 'ctrail_123', 'S3BucketName': 'aws-cloudtrail-logs-355237452254-0d3050fa', 'IncludeGlobalServiceEvents': True, 'IsMultiRegionTrail': True, 'HomeRegion': 'us-east-1', 'TrailARN': 'arn:aws:cloudtrail:us-east-1:355237452254:trail/ctrail_123', 'LogFileValidationEnabled': True, 'HasCustomEventSelectors': True, 'HasInsightSelectors': True, 'IsOrganizationTrail': False}, {'Name': 'c_global', 'S3BucketName': 'aws-cloudtrail-logs-355237452254-0d3050fa', 'IncludeGlobalServiceEvents': True, 'IsMultiRegionTrail': True, 'HomeRegion': 'us-west-2', 'TrailARN': 'arn:aws:cloudtrail:us-west-2:355237452254:trail/c_global', 'LogFileValidationEnabled': False, 'HasCustomEventSelectors': True, 'HasInsightSelectors': False, 'IsOrganizationTrail': False}, {'Name': 'ctrail_oregon', 'S3BucketName': 'aws-cloudtrail-logs-355237452254-0d3050fa', 'IncludeGlobalServiceEvents': False, 'IsMultiRegionTrail': False, 'HomeRegion': 'us-west-2', 'TrailARN': 'arn:aws:cloudtrail:us-west-2:355237452254:trail/ctrail_oregon', 'LogFileValidationEnabled': True, 'HasCustomEventSelectors': True, 'HasInsightSelectors': True, 'IsOrganizationTrail': False}] if all_trails: try: # Filtering global trails that are in their home region global_trails = [trail for trail in all_trails if trail['IsMultiRegionTrail'] and trail['HomeRegion'] == trail['HomeRegion']] # Grouping global trails per account account_trail_map = {} for trail in global_trails: account_id = trail['TrailARN'].split(':')[4] account_trail_map.setdefault(account_id, []).append(trail) # Identifying and printing redundant global trails redundant_trails_found = False for account_id, trails in account_trail_map.items(): if len(trails) > 1: redundant_trails_found = True print(f"Alarm: Account {account_id} has {len(trails)} global trails which is redundant.") for i, trail in enumerate(trails): redundant_to = ', '.join([t['Name'] for idx, t in enumerate(trails) if idx != i]) print(f" - Resource: {trail['TrailARN']}, Reason: {trail['Name']} is redundant to {redundant_to}, Region: {trail['HomeRegion']}") if not redundant_trails_found: print("No redundant global trails found.") except Exception as e: # Log any general exception that occurs print(f"An unexpected error occurred: {e}") else: print("No trails were provided.")