escher-execution-engine 0.1.2

Production-ready async execution engine for system commands
Documentation 
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#!/usr/bin/env python3
import boto3
import json
import sys
from botocore.exceptions import ClientError

def main():
    try:
        session = boto3.Session()
        print("session started")
        ec2 = session.client('ec2')
        regions = [r['RegionName'] for r in ec2.describe_regions()['Regions']]
        print("regions", regions)
        
        
        results = []
        for region in regions:
            
            try:
                regional_ec2 = session.client('ec2', region_name=region)
                
                # Get running instances
                instances_response = regional_ec2.describe_instances(
                    Filters=[{'Name': 'instance-state-name', 'Values': ['running']}]
                )
                
                # Extract instance IDs
                instance_ids = [
                    instance['InstanceId']
                    for reservation in instances_response.get('Reservations', [])
                    for instance in reservation.get('Instances', [])
                ]
                
                # Get volumes for running instances
                if instance_ids:
                    volumes_response = regional_ec2.describe_volumes(
                        Filters=[{
                            'Name': 'attachment.instance-id', 
                            'Values': instance_ids
                        }]
                    )
                    
                    # Process volumes
                    for volume in volumes_response.get('Volumes', []):
                        for attachment in volume.get('Attachments', []):
                            volume_details = {
                                'volume_id': volume.get('VolumeId', 'unknown'),
                                'region': region,
                                'instance_id': attachment.get('InstanceId', 'unknown'),
                                'device': attachment.get('Device', 'unknown'),
                                'state': attachment.get('State', 'unknown'),
                                'volume_type': volume.get('VolumeType', 'unknown'),
                                'size_gb': volume.get('Size', 0),
                                'encrypted': volume.get('Encrypted', False)
                            }
                            results.append(volume_details)
                    
            
            except ClientError:
                continue
        
        # Output final JSON
        output = {
            'status': 'success',
            'query': 'EBS volumes attached to live EC2 instances',
            'count': len(results),
            'results': results
        }
        print(json.dumps(output, indent=2))
        sys.stdout.flush()
        sys.exit(0)
    
    except Exception as e:
        error_output = {
            'status': 'error',
            'error': str(e),
            'query': 'EBS volumes attached to live EC2 instances'
        }
        print(json.dumps(error_output, indent=2))
        sys.stdout.flush()
        sys.exit(1)

if __name__ == '__main__':
    main()