Python ENC and manifest that use AWS tags as classifiers

enc.py

#! /usr/bin/env python
 
import yaml
import sys
from boto.ec2.connection import EC2Connection
ec2 = EC2Connection()
 
fqdn = sys.argv[1]
hostname = fqdn.split('.')[0]
 
for res in ec2.get_all_instances(filters={'tag:Name': hostname}):
    for inst in res.instances:
        print yaml.safe_dump({
            'parameters': {
                'ec2_id': inst.id,
                'ec2_groups': [group.name for group in inst.groups],
                'ec2_public_dns_name': inst.public_dns_name,
                'ec2_private_dns_name': inst.private_dns_name,
                'ec2_state': inst.state,
                'ec2_key_name': inst.key_name,
                'ec2_instance_type': inst.instance_type,
                'ec2_launch_time': inst.launch_time,
                'ec2_image_id': inst.image_id,
                'ec2_placement': inst.placement,
                'ec2_kernel': inst.kernel,
                'ec2_architecture': inst.architecture,
                'ec2_hypervisor': inst.hypervisor,
                'ec2_ami_launch_index': inst.ami_launch_index,
                'ec2_private_ip_address': inst.private_ip_address,
                'ec2_ip_address': inst.ip_address,
                'ec2_root_device_name': inst.root_device_name,
                'ec2_root_device_type': inst.root_device_type,
                'ec2_tags': dict(inst.tags),
                'groups': inst.tags['groups'].split(','),
                'environment': inst.tags['environment'],
            }
        })

nodes.pp

node default {
  if $::ec2_tags {
    if $::ec2_tags['course-server'] and $::ec2_tags['group'] {
      class { 'group::course_server':
        course_name => "${ec2_tags['group']}",
      }
      } elsif $::group  {
        role::include { 'base': }
        role::include { $group: }
      }
  }
}

http://docs.puppetlabs.com/guides/external_nodes.html