ip

#!/usr/bin/env python
import sys; sys.path += ['/var/canvas/common', '../../common']
import ec2, argparse
import random

def find(args):
    conn = ec2.connection()
    filters = {}
    
    if args.group:
        filters['group-name'] = args.group.title()
        
    if args.name:
        filters['tag:Name'] = '*%s*' % args.name
        
    filters['instance-state-name'] = 'running'
    
    instances = list(ec2.get_instances(conn, filters=filters))
    
    if instances and args.random:
        instances = [random.choice(instances)]
        
    for instance in instances:
        if args.public:
            ip = instance.public_dns_name
        elif args.internal:
            ip = instance.private_dns_name
        else:
            ip = instance.ip_address

        if args.human:
            print "%s: %s (%s)" % (instance.tags.get('Name', '[unnamed]'), ip, instance.id)
        else:
            print ip

def main():
    parser = argparse.ArgumentParser(description="Find the IP of machines", add_help=False)
    parser.add_argument('-g', '--group', help="Find via security group")
    parser.add_argument('-n', '--name', help="Find via substring in name")
    parser.add_argument('-h', '--human', action='store_true', help="Show human readable long names")
    parser.add_argument('-p', '--public', action='store_true', help="Show public domain names")
    parser.add_argument('-i', '--internal', action='store_true', default=True, help="Show internal domain names")
    parser.add_argument('-r', '--random', action='store_true', help="Return one server at random")
    parser.add_argument('--help', action='help', help="show this help message and exit") 

    find(parser.parse_args())

if __name__ == "__main__":
    main()