AWS: More Listings of EC2 Information

AWS: EC2 情報の簡易一覧表示

こちらの改良版。
mog project: AWS: Brief Listing of EC2 Instances 

インスタンスの他に、ボリューム、スナップショットの一覧も表示。

aws_list.py

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#!/usr/bin/env python # -*- coding: utf-8 -*-   import sys import subprocess try:     import json except ImportError:     print('You need python 2.6 or later to run this script.')     sys.exit(1)     def list_instances():     print('Instances:')     command_args = ['describe-instances']     headers = [         ('Name', 16),         ('Instance', 16),         ('Type', 10),         ('Launch Time', 26),         ('State', 12),     ]       def generator(output):         for i in output['Reservations'][0]['Instances']:             yield [                 get_name(i),                 i['InstanceId'],                 i['InstanceType'],                 i['LaunchTime'],                 i['State']['Name'],             ]     print_list(command_args, headers, generator)     def list_volumes():     print('Volumes:')     command_args = ['describe-volumes']     headers = [         ('Name', 16),         ('Volume ID', 16),         ('Cap', 8),         ('Type', 11),         ('Zone', 17),         ('State', 12),     ]       def generator(output):         for i in output['Volumes']:             yield [                 get_name(i),                 i['VolumeId'],                 '%d GB' % i['Size'],                 i['VolumeType'],                 i['AvailabilityZone'],                 i['State'],             ]     print_list(command_args, headers, generator)     def list_snapshots():     print('Snapshots:')     command_args = ['describe-snapshots', '--owner-ids', 'self']     headers = [         ('Name', 16),         ('Snapshot ID', 16),         ('Cap', 8),         ('Start Time', 28),         ('State', 12),     ]       def generator(output):         for i in output['Snapshots']:             yield [                 get_name(i),                 i['SnapshotId'],                 '%d GB' % i['VolumeSize'],                 i['StartTime'],                 i['State'],             ]     print_list(command_args, headers, generator)     def get_name(obj):     return ''.join(         [x['Value'] for x in obj.get('Tags', []) if x['Key'] == 'Name'])     def print_list(command_args, headers, generator):     # Print header.     print(''.join([x[0].ljust(x[1]) for x in headers]))     print('-' * sum([x[1] for x in headers]))       # Run command.     stdout = subprocess.check_output(['aws', 'ec2'] + command_args)     output = json.loads(stdout)       # Print result.     for result in generator(output):         print(''.join(             [result[i][:x[1] - 1].ljust(x[1]) for i, x in enumerate(headers)]))       # Print footer.     print('')     if __name__ == '__main__':     list_instances()     list_volumes()     list_snapshots()