576832e4c9
When the error reason is "Forbidden", the code throws a Python exception rather than simply outputting the exception reason. It's not nice to throw a Python exception when all the info to display a proper message is available.
804 lines
30 KiB
Python
Executable file
804 lines
30 KiB
Python
Executable file
#!/usr/bin/env python
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'''
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EC2 external inventory script
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=================================
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Generates inventory that Ansible can understand by making API request to
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AWS EC2 using the Boto library.
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NOTE: This script assumes Ansible is being executed where the environment
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variables needed for Boto have already been set:
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export AWS_ACCESS_KEY_ID='AK123'
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export AWS_SECRET_ACCESS_KEY='abc123'
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This script also assumes there is an ec2.ini file alongside it. To specify a
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different path to ec2.ini, define the EC2_INI_PATH environment variable:
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export EC2_INI_PATH=/path/to/my_ec2.ini
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If you're using eucalyptus you need to set the above variables and
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you need to define:
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export EC2_URL=http://hostname_of_your_cc:port/services/Eucalyptus
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For more details, see: http://docs.pythonboto.org/en/latest/boto_config_tut.html
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When run against a specific host, this script returns the following variables:
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- ec2_ami_launch_index
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- ec2_architecture
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- ec2_association
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- ec2_attachTime
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- ec2_attachment
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- ec2_attachmentId
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- ec2_client_token
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- ec2_deleteOnTermination
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- ec2_description
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- ec2_deviceIndex
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- ec2_dns_name
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- ec2_eventsSet
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- ec2_group_name
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- ec2_hypervisor
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- ec2_id
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- ec2_image_id
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- ec2_instanceState
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- ec2_instance_type
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- ec2_ipOwnerId
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- ec2_ip_address
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- ec2_item
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- ec2_kernel
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- ec2_key_name
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- ec2_launch_time
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- ec2_monitored
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- ec2_monitoring
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- ec2_networkInterfaceId
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- ec2_ownerId
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- ec2_persistent
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- ec2_placement
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- ec2_platform
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- ec2_previous_state
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- ec2_private_dns_name
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- ec2_private_ip_address
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- ec2_publicIp
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- ec2_public_dns_name
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- ec2_ramdisk
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- ec2_reason
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- ec2_region
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- ec2_requester_id
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- ec2_root_device_name
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- ec2_root_device_type
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- ec2_security_group_ids
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- ec2_security_group_names
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- ec2_shutdown_state
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- ec2_sourceDestCheck
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- ec2_spot_instance_request_id
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- ec2_state
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- ec2_state_code
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- ec2_state_reason
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- ec2_status
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- ec2_subnet_id
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- ec2_tenancy
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- ec2_virtualization_type
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- ec2_vpc_id
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These variables are pulled out of a boto.ec2.instance object. There is a lack of
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consistency with variable spellings (camelCase and underscores) since this
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just loops through all variables the object exposes. It is preferred to use the
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ones with underscores when multiple exist.
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In addition, if an instance has AWS Tags associated with it, each tag is a new
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variable named:
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- ec2_tag_[Key] = [Value]
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Security groups are comma-separated in 'ec2_security_group_ids' and
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'ec2_security_group_names'.
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'''
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# (c) 2012, Peter Sankauskas
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#
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# This file is part of Ansible,
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#
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# Ansible is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Ansible is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
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######################################################################
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import sys
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import os
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import argparse
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import re
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from time import time
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import boto
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from boto import ec2
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from boto import rds
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from boto import route53
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import ConfigParser
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from collections import defaultdict
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try:
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import json
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except ImportError:
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import simplejson as json
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class Ec2Inventory(object):
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def _empty_inventory(self):
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return {"_meta" : {"hostvars" : {}}}
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def __init__(self):
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''' Main execution path '''
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# Inventory grouped by instance IDs, tags, security groups, regions,
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# and availability zones
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self.inventory = self._empty_inventory()
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# Index of hostname (address) to instance ID
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self.index = {}
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# Read settings and parse CLI arguments
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self.read_settings()
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self.parse_cli_args()
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# Cache
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if self.args.refresh_cache:
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self.do_api_calls_update_cache()
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elif not self.is_cache_valid():
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self.do_api_calls_update_cache()
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# Data to print
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if self.args.host:
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data_to_print = self.get_host_info()
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elif self.args.list:
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# Display list of instances for inventory
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if self.inventory == self._empty_inventory():
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data_to_print = self.get_inventory_from_cache()
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else:
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data_to_print = self.json_format_dict(self.inventory, True)
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print data_to_print
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def is_cache_valid(self):
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''' Determines if the cache files have expired, or if it is still valid '''
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if os.path.isfile(self.cache_path_cache):
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mod_time = os.path.getmtime(self.cache_path_cache)
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current_time = time()
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if (mod_time + self.cache_max_age) > current_time:
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if os.path.isfile(self.cache_path_index):
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return True
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return False
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def read_settings(self):
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''' Reads the settings from the ec2.ini file '''
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config = ConfigParser.SafeConfigParser()
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ec2_default_ini_path = os.path.join(os.path.dirname(os.path.realpath(__file__)), 'ec2.ini')
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ec2_ini_path = os.environ.get('EC2_INI_PATH', ec2_default_ini_path)
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config.read(ec2_ini_path)
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# is eucalyptus?
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self.eucalyptus_host = None
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self.eucalyptus = False
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if config.has_option('ec2', 'eucalyptus'):
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self.eucalyptus = config.getboolean('ec2', 'eucalyptus')
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if self.eucalyptus and config.has_option('ec2', 'eucalyptus_host'):
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self.eucalyptus_host = config.get('ec2', 'eucalyptus_host')
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# Regions
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self.regions = []
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configRegions = config.get('ec2', 'regions')
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configRegions_exclude = config.get('ec2', 'regions_exclude')
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if (configRegions == 'all'):
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if self.eucalyptus_host:
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self.regions.append(boto.connect_euca(host=self.eucalyptus_host).region.name)
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else:
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for regionInfo in ec2.regions():
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if regionInfo.name not in configRegions_exclude:
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self.regions.append(regionInfo.name)
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else:
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self.regions = configRegions.split(",")
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# Destination addresses
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self.destination_variable = config.get('ec2', 'destination_variable')
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self.vpc_destination_variable = config.get('ec2', 'vpc_destination_variable')
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# Route53
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self.route53_enabled = config.getboolean('ec2', 'route53')
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self.route53_excluded_zones = []
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if config.has_option('ec2', 'route53_excluded_zones'):
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self.route53_excluded_zones.extend(
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config.get('ec2', 'route53_excluded_zones', '').split(','))
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# Include RDS instances?
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self.rds_enabled = True
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if config.has_option('ec2', 'rds'):
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self.rds_enabled = config.getboolean('ec2', 'rds')
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# Return all EC2 and RDS instances (if RDS is enabled)
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if config.has_option('ec2', 'all_instances'):
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self.all_instances = config.getboolean('ec2', 'all_instances')
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else:
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self.all_instances = False
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if config.has_option('ec2', 'all_rds_instances') and self.rds_enabled:
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self.all_rds_instances = config.getboolean('ec2', 'all_rds_instances')
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else:
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self.all_rds_instances = False
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# Cache related
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cache_dir = os.path.expanduser(config.get('ec2', 'cache_path'))
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if not os.path.exists(cache_dir):
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os.makedirs(cache_dir)
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self.cache_path_cache = cache_dir + "/ansible-ec2.cache"
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self.cache_path_index = cache_dir + "/ansible-ec2.index"
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self.cache_max_age = config.getint('ec2', 'cache_max_age')
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# Configure nested groups instead of flat namespace.
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if config.has_option('ec2', 'nested_groups'):
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self.nested_groups = config.getboolean('ec2', 'nested_groups')
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else:
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self.nested_groups = False
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# Configure which groups should be created.
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group_by_options = [
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'group_by_instance_id',
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'group_by_region',
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'group_by_availability_zone',
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'group_by_ami_id',
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'group_by_instance_type',
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'group_by_key_pair',
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'group_by_vpc_id',
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'group_by_security_group',
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'group_by_tag_keys',
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'group_by_tag_none',
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'group_by_route53_names',
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'group_by_rds_engine',
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'group_by_rds_parameter_group',
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]
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for option in group_by_options:
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if config.has_option('ec2', option):
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setattr(self, option, config.getboolean('ec2', option))
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else:
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setattr(self, option, True)
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# Do we need to just include hosts that match a pattern?
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try:
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pattern_include = config.get('ec2', 'pattern_include')
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if pattern_include and len(pattern_include) > 0:
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self.pattern_include = re.compile(pattern_include)
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else:
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self.pattern_include = None
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except ConfigParser.NoOptionError, e:
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self.pattern_include = None
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# Do we need to exclude hosts that match a pattern?
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try:
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pattern_exclude = config.get('ec2', 'pattern_exclude');
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if pattern_exclude and len(pattern_exclude) > 0:
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self.pattern_exclude = re.compile(pattern_exclude)
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else:
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self.pattern_exclude = None
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except ConfigParser.NoOptionError, e:
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self.pattern_exclude = None
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# Instance filters (see boto and EC2 API docs). Ignore invalid filters.
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self.ec2_instance_filters = defaultdict(list)
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if config.has_option('ec2', 'instance_filters'):
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for instance_filter in config.get('ec2', 'instance_filters', '').split(','):
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instance_filter = instance_filter.strip()
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if not instance_filter or '=' not in instance_filter:
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continue
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filter_key, filter_value = [x.strip() for x in instance_filter.split('=', 1)]
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if not filter_key:
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continue
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self.ec2_instance_filters[filter_key].append(filter_value)
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def parse_cli_args(self):
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''' Command line argument processing '''
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parser = argparse.ArgumentParser(description='Produce an Ansible Inventory file based on EC2')
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parser.add_argument('--list', action='store_true', default=True,
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help='List instances (default: True)')
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parser.add_argument('--host', action='store',
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help='Get all the variables about a specific instance')
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parser.add_argument('--refresh-cache', action='store_true', default=False,
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help='Force refresh of cache by making API requests to EC2 (default: False - use cache files)')
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self.args = parser.parse_args()
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def do_api_calls_update_cache(self):
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''' Do API calls to each region, and save data in cache files '''
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if self.route53_enabled:
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self.get_route53_records()
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for region in self.regions:
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self.get_instances_by_region(region)
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if self.rds_enabled:
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self.get_rds_instances_by_region(region)
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self.write_to_cache(self.inventory, self.cache_path_cache)
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self.write_to_cache(self.index, self.cache_path_index)
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def connect(self, region):
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''' create connection to api server'''
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if self.eucalyptus:
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conn = boto.connect_euca(host=self.eucalyptus_host)
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conn.APIVersion = '2010-08-31'
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else:
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conn = ec2.connect_to_region(region)
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# connect_to_region will fail "silently" by returning None if the region name is wrong or not supported
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if conn is None:
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self.fail_with_error("region name: %s likely not supported, or AWS is down. connection to region failed." % region)
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return conn
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def get_instances_by_region(self, region):
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''' Makes an AWS EC2 API call to the list of instances in a particular
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region '''
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try:
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conn = self.connect(region)
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reservations = []
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if self.ec2_instance_filters:
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for filter_key, filter_values in self.ec2_instance_filters.iteritems():
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reservations.extend(conn.get_all_instances(filters = { filter_key : filter_values }))
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else:
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reservations = conn.get_all_instances()
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for reservation in reservations:
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for instance in reservation.instances:
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self.add_instance(instance, region)
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except boto.exception.BotoServerError, e:
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if e.error_code == 'AuthFailure':
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error = self.get_auth_error_message()
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else:
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backend = 'Eucalyptus' if self.eucalyptus else 'AWS'
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error = "Error connecting to %s backend.\n%s" % (backend, e.message)
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self.fail_with_error(error)
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def get_rds_instances_by_region(self, region):
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''' Makes an AWS API call to the list of RDS instances in a particular
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region '''
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try:
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conn = rds.connect_to_region(region)
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if conn:
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instances = conn.get_all_dbinstances()
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for instance in instances:
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self.add_rds_instance(instance, region)
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except boto.exception.BotoServerError, e:
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error = e.reason
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if e.error_code == 'AuthFailure':
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error = self.get_auth_error_message()
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if not e.reason == "Forbidden":
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error = "Looks like AWS RDS is down:\n%s" % e.message
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self.fail_with_error(error)
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def get_auth_error_message(self):
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''' create an informative error message if there is an issue authenticating'''
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errors = ["Authentication error retrieving ec2 inventory."]
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if None in [os.environ.get('AWS_ACCESS_KEY_ID'), os.environ.get('AWS_SECRET_ACCESS_KEY')]:
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errors.append(' - No AWS_ACCESS_KEY_ID or AWS_SECRET_ACCESS_KEY environment vars found')
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else:
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errors.append(' - AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY environment vars found but may not be correct')
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boto_paths = ['/etc/boto.cfg', '~/.boto', '~/.aws/credentials']
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boto_config_found = list(p for p in boto_paths if os.path.isfile(os.path.expanduser(p)))
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if len(boto_config_found) > 0:
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errors.append(" - Boto configs found at '%s', but the credentials contained may not be correct" % ', '.join(boto_config_found))
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else:
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errors.append(" - No Boto config found at any expected location '%s'" % ', '.join(boto_paths))
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return '\n'.join(errors)
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def fail_with_error(self, err_msg):
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'''log an error to std err for ansible-playbook to consume and exit'''
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sys.stderr.write(err_msg)
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sys.exit(1)
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def get_instance(self, region, instance_id):
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conn = self.connect(region)
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reservations = conn.get_all_instances([instance_id])
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for reservation in reservations:
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for instance in reservation.instances:
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return instance
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def add_instance(self, instance, region):
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''' Adds an instance to the inventory and index, as long as it is
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addressable '''
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# Only want running instances unless all_instances is True
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if not self.all_instances and instance.state != 'running':
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return
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# Select the best destination address
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if instance.subnet_id:
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dest = getattr(instance, self.vpc_destination_variable, None)
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if dest is None:
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dest = getattr(instance, 'tags').get(self.vpc_destination_variable, None)
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else:
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dest = getattr(instance, self.destination_variable, None)
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if dest is None:
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dest = getattr(instance, 'tags').get(self.destination_variable, None)
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if not dest:
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# Skip instances we cannot address (e.g. private VPC subnet)
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return
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# if we only want to include hosts that match a pattern, skip those that don't
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if self.pattern_include and not self.pattern_include.match(dest):
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return
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# if we need to exclude hosts that match a pattern, skip those
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if self.pattern_exclude and self.pattern_exclude.match(dest):
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return
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# Add to index
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self.index[dest] = [region, instance.id]
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# Inventory: Group by instance ID (always a group of 1)
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if self.group_by_instance_id:
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self.inventory[instance.id] = [dest]
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if self.nested_groups:
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self.push_group(self.inventory, 'instances', instance.id)
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# Inventory: Group by region
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if self.group_by_region:
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self.push(self.inventory, region, dest)
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if self.nested_groups:
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self.push_group(self.inventory, 'regions', region)
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# Inventory: Group by availability zone
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if self.group_by_availability_zone:
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self.push(self.inventory, instance.placement, dest)
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if self.nested_groups:
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if self.group_by_region:
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self.push_group(self.inventory, region, instance.placement)
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self.push_group(self.inventory, 'zones', instance.placement)
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# Inventory: Group by Amazon Machine Image (AMI) ID
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if self.group_by_ami_id:
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ami_id = self.to_safe(instance.image_id)
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self.push(self.inventory, ami_id, dest)
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if self.nested_groups:
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self.push_group(self.inventory, 'images', ami_id)
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|
|
# Inventory: Group by instance type
|
|
if self.group_by_instance_type:
|
|
type_name = self.to_safe('type_' + instance.instance_type)
|
|
self.push(self.inventory, type_name, dest)
|
|
if self.nested_groups:
|
|
self.push_group(self.inventory, 'types', type_name)
|
|
|
|
# Inventory: Group by key pair
|
|
if self.group_by_key_pair and instance.key_name:
|
|
key_name = self.to_safe('key_' + instance.key_name)
|
|
self.push(self.inventory, key_name, dest)
|
|
if self.nested_groups:
|
|
self.push_group(self.inventory, 'keys', key_name)
|
|
|
|
# Inventory: Group by VPC
|
|
if self.group_by_vpc_id and instance.vpc_id:
|
|
vpc_id_name = self.to_safe('vpc_id_' + instance.vpc_id)
|
|
self.push(self.inventory, vpc_id_name, dest)
|
|
if self.nested_groups:
|
|
self.push_group(self.inventory, 'vpcs', vpc_id_name)
|
|
|
|
# Inventory: Group by security group
|
|
if self.group_by_security_group:
|
|
try:
|
|
for group in instance.groups:
|
|
key = self.to_safe("security_group_" + group.name)
|
|
self.push(self.inventory, key, dest)
|
|
if self.nested_groups:
|
|
self.push_group(self.inventory, 'security_groups', key)
|
|
except AttributeError:
|
|
self.fail_with_error('\n'.join(['Package boto seems a bit older.',
|
|
'Please upgrade boto >= 2.3.0.']))
|
|
|
|
# Inventory: Group by tag keys
|
|
if self.group_by_tag_keys:
|
|
for k, v in instance.tags.iteritems():
|
|
key = self.to_safe("tag_" + k + "=" + v)
|
|
self.push(self.inventory, key, dest)
|
|
if self.nested_groups:
|
|
self.push_group(self.inventory, 'tags', self.to_safe("tag_" + k))
|
|
self.push_group(self.inventory, self.to_safe("tag_" + k), key)
|
|
|
|
# Inventory: Group by Route53 domain names if enabled
|
|
if self.route53_enabled and self.group_by_route53_names:
|
|
route53_names = self.get_instance_route53_names(instance)
|
|
for name in route53_names:
|
|
self.push(self.inventory, name, dest)
|
|
if self.nested_groups:
|
|
self.push_group(self.inventory, 'route53', name)
|
|
|
|
# Global Tag: instances without tags
|
|
if self.group_by_tag_none and len(instance.tags) == 0:
|
|
self.push(self.inventory, 'tag_none', dest)
|
|
if self.nested_groups:
|
|
self.push_group(self.inventory, 'tags', 'tag_none')
|
|
|
|
# Global Tag: tag all EC2 instances
|
|
self.push(self.inventory, 'ec2', dest)
|
|
|
|
self.inventory["_meta"]["hostvars"][dest] = self.get_host_info_dict_from_instance(instance)
|
|
|
|
|
|
def add_rds_instance(self, instance, region):
|
|
''' Adds an RDS instance to the inventory and index, as long as it is
|
|
addressable '''
|
|
|
|
# Only want available instances unless all_rds_instances is True
|
|
if not self.all_rds_instances and instance.status != 'available':
|
|
return
|
|
|
|
# Select the best destination address
|
|
dest = instance.endpoint[0]
|
|
|
|
if not dest:
|
|
# Skip instances we cannot address (e.g. private VPC subnet)
|
|
return
|
|
|
|
# Add to index
|
|
self.index[dest] = [region, instance.id]
|
|
|
|
# Inventory: Group by instance ID (always a group of 1)
|
|
if self.group_by_instance_id:
|
|
self.inventory[instance.id] = [dest]
|
|
if self.nested_groups:
|
|
self.push_group(self.inventory, 'instances', instance.id)
|
|
|
|
# Inventory: Group by region
|
|
if self.group_by_region:
|
|
self.push(self.inventory, region, dest)
|
|
if self.nested_groups:
|
|
self.push_group(self.inventory, 'regions', region)
|
|
|
|
# Inventory: Group by availability zone
|
|
if self.group_by_availability_zone:
|
|
self.push(self.inventory, instance.availability_zone, dest)
|
|
if self.nested_groups:
|
|
if self.group_by_region:
|
|
self.push_group(self.inventory, region, instance.availability_zone)
|
|
self.push_group(self.inventory, 'zones', instance.availability_zone)
|
|
|
|
# Inventory: Group by instance type
|
|
if self.group_by_instance_type:
|
|
type_name = self.to_safe('type_' + instance.instance_class)
|
|
self.push(self.inventory, type_name, dest)
|
|
if self.nested_groups:
|
|
self.push_group(self.inventory, 'types', type_name)
|
|
|
|
# Inventory: Group by VPC
|
|
if self.group_by_vpc_id and instance.subnet_group and instance.subnet_group.vpc_id:
|
|
vpc_id_name = self.to_safe('vpc_id_' + instance.subnet_group.vpc_id)
|
|
self.push(self.inventory, vpc_id_name, dest)
|
|
if self.nested_groups:
|
|
self.push_group(self.inventory, 'vpcs', vpc_id_name)
|
|
|
|
# Inventory: Group by security group
|
|
if self.group_by_security_group:
|
|
try:
|
|
if instance.security_group:
|
|
key = self.to_safe("security_group_" + instance.security_group.name)
|
|
self.push(self.inventory, key, dest)
|
|
if self.nested_groups:
|
|
self.push_group(self.inventory, 'security_groups', key)
|
|
|
|
except AttributeError:
|
|
self.fail_with_error('\n'.join(['Package boto seems a bit older.',
|
|
'Please upgrade boto >= 2.3.0.']))
|
|
|
|
|
|
# Inventory: Group by engine
|
|
if self.group_by_rds_engine:
|
|
self.push(self.inventory, self.to_safe("rds_" + instance.engine), dest)
|
|
if self.nested_groups:
|
|
self.push_group(self.inventory, 'rds_engines', self.to_safe("rds_" + instance.engine))
|
|
|
|
# Inventory: Group by parameter group
|
|
if self.group_by_rds_parameter_group:
|
|
self.push(self.inventory, self.to_safe("rds_parameter_group_" + instance.parameter_group.name), dest)
|
|
if self.nested_groups:
|
|
self.push_group(self.inventory, 'rds_parameter_groups', self.to_safe("rds_parameter_group_" + instance.parameter_group.name))
|
|
|
|
# Global Tag: all RDS instances
|
|
self.push(self.inventory, 'rds', dest)
|
|
|
|
self.inventory["_meta"]["hostvars"][dest] = self.get_host_info_dict_from_instance(instance)
|
|
|
|
|
|
def get_route53_records(self):
|
|
''' Get and store the map of resource records to domain names that
|
|
point to them. '''
|
|
|
|
r53_conn = route53.Route53Connection()
|
|
all_zones = r53_conn.get_zones()
|
|
|
|
route53_zones = [ zone for zone in all_zones if zone.name[:-1]
|
|
not in self.route53_excluded_zones ]
|
|
|
|
self.route53_records = {}
|
|
|
|
for zone in route53_zones:
|
|
rrsets = r53_conn.get_all_rrsets(zone.id)
|
|
|
|
for record_set in rrsets:
|
|
record_name = record_set.name
|
|
|
|
if record_name.endswith('.'):
|
|
record_name = record_name[:-1]
|
|
|
|
for resource in record_set.resource_records:
|
|
self.route53_records.setdefault(resource, set())
|
|
self.route53_records[resource].add(record_name)
|
|
|
|
|
|
def get_instance_route53_names(self, instance):
|
|
''' Check if an instance is referenced in the records we have from
|
|
Route53. If it is, return the list of domain names pointing to said
|
|
instance. If nothing points to it, return an empty list. '''
|
|
|
|
instance_attributes = [ 'public_dns_name', 'private_dns_name',
|
|
'ip_address', 'private_ip_address' ]
|
|
|
|
name_list = set()
|
|
|
|
for attrib in instance_attributes:
|
|
try:
|
|
value = getattr(instance, attrib)
|
|
except AttributeError:
|
|
continue
|
|
|
|
if value in self.route53_records:
|
|
name_list.update(self.route53_records[value])
|
|
|
|
return list(name_list)
|
|
|
|
|
|
def get_host_info_dict_from_instance(self, instance):
|
|
instance_vars = {}
|
|
for key in vars(instance):
|
|
value = getattr(instance, key)
|
|
key = self.to_safe('ec2_' + key)
|
|
|
|
# Handle complex types
|
|
# state/previous_state changed to properties in boto in https://github.com/boto/boto/commit/a23c379837f698212252720d2af8dec0325c9518
|
|
if key == 'ec2__state':
|
|
instance_vars['ec2_state'] = instance.state or ''
|
|
instance_vars['ec2_state_code'] = instance.state_code
|
|
elif key == 'ec2__previous_state':
|
|
instance_vars['ec2_previous_state'] = instance.previous_state or ''
|
|
instance_vars['ec2_previous_state_code'] = instance.previous_state_code
|
|
elif type(value) in [int, bool]:
|
|
instance_vars[key] = value
|
|
elif type(value) in [str, unicode]:
|
|
instance_vars[key] = value.strip()
|
|
elif type(value) == type(None):
|
|
instance_vars[key] = ''
|
|
elif key == 'ec2_region':
|
|
instance_vars[key] = value.name
|
|
elif key == 'ec2__placement':
|
|
instance_vars['ec2_placement'] = value.zone
|
|
elif key == 'ec2_tags':
|
|
for k, v in value.iteritems():
|
|
key = self.to_safe('ec2_tag_' + k)
|
|
instance_vars[key] = v
|
|
elif key == 'ec2_groups':
|
|
group_ids = []
|
|
group_names = []
|
|
for group in value:
|
|
group_ids.append(group.id)
|
|
group_names.append(group.name)
|
|
instance_vars["ec2_security_group_ids"] = ','.join([str(i) for i in group_ids])
|
|
instance_vars["ec2_security_group_names"] = ','.join([str(i) for i in group_names])
|
|
else:
|
|
pass
|
|
# TODO Product codes if someone finds them useful
|
|
#print key
|
|
#print type(value)
|
|
#print value
|
|
|
|
return instance_vars
|
|
|
|
def get_host_info(self):
|
|
''' Get variables about a specific host '''
|
|
|
|
if len(self.index) == 0:
|
|
# Need to load index from cache
|
|
self.load_index_from_cache()
|
|
|
|
if not self.args.host in self.index:
|
|
# try updating the cache
|
|
self.do_api_calls_update_cache()
|
|
if not self.args.host in self.index:
|
|
# host might not exist anymore
|
|
return self.json_format_dict({}, True)
|
|
|
|
(region, instance_id) = self.index[self.args.host]
|
|
|
|
instance = self.get_instance(region, instance_id)
|
|
return self.json_format_dict(self.get_host_info_dict_from_instance(instance), True)
|
|
|
|
def push(self, my_dict, key, element):
|
|
''' Push an element onto an array that may not have been defined in
|
|
the dict '''
|
|
group_info = my_dict.setdefault(key, [])
|
|
if isinstance(group_info, dict):
|
|
host_list = group_info.setdefault('hosts', [])
|
|
host_list.append(element)
|
|
else:
|
|
group_info.append(element)
|
|
|
|
def push_group(self, my_dict, key, element):
|
|
''' Push a group as a child of another group. '''
|
|
parent_group = my_dict.setdefault(key, {})
|
|
if not isinstance(parent_group, dict):
|
|
parent_group = my_dict[key] = {'hosts': parent_group}
|
|
child_groups = parent_group.setdefault('children', [])
|
|
if element not in child_groups:
|
|
child_groups.append(element)
|
|
|
|
def get_inventory_from_cache(self):
|
|
''' Reads the inventory from the cache file and returns it as a JSON
|
|
object '''
|
|
|
|
cache = open(self.cache_path_cache, 'r')
|
|
json_inventory = cache.read()
|
|
return json_inventory
|
|
|
|
|
|
def load_index_from_cache(self):
|
|
''' Reads the index from the cache file sets self.index '''
|
|
|
|
cache = open(self.cache_path_index, 'r')
|
|
json_index = cache.read()
|
|
self.index = json.loads(json_index)
|
|
|
|
|
|
def write_to_cache(self, data, filename):
|
|
''' Writes data in JSON format to a file '''
|
|
|
|
json_data = self.json_format_dict(data, True)
|
|
cache = open(filename, 'w')
|
|
cache.write(json_data)
|
|
cache.close()
|
|
|
|
|
|
def to_safe(self, word):
|
|
''' Converts 'bad' characters in a string to underscores so they can be
|
|
used as Ansible groups '''
|
|
|
|
return re.sub("[^A-Za-z0-9\-]", "_", word)
|
|
|
|
|
|
def json_format_dict(self, data, pretty=False):
|
|
''' Converts a dict to a JSON object and dumps it as a formatted
|
|
string '''
|
|
|
|
if pretty:
|
|
return json.dumps(data, sort_keys=True, indent=2)
|
|
else:
|
|
return json.dumps(data)
|
|
|
|
|
|
# Run the script
|
|
Ec2Inventory()
|