823677b490
Replace .iteritems() with six.iteritems() everywhere except in module_utils (because there's no 'six' on the remote host). And except in lib/ansible/galaxy/data/metadata_template.j2, because I'm not sure six is available there.
361 lines
12 KiB
Python
Executable file
361 lines
12 KiB
Python
Executable file
#!/usr/bin/env python
|
|
|
|
# (c) 2013, Sebastien Goasguen <runseb@gmail.com>
|
|
#
|
|
# This file is part of Ansible,
|
|
#
|
|
# Ansible is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation, either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# Ansible is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
######################################################################
|
|
|
|
'''
|
|
Apache Libcloud generic external inventory script
|
|
=================================
|
|
|
|
Generates inventory that Ansible can understand by making API request to
|
|
Cloud providers using the Apache libcloud library.
|
|
|
|
This script also assumes there is a libcloud.ini file alongside it
|
|
|
|
'''
|
|
|
|
import sys
|
|
import os
|
|
import argparse
|
|
import re
|
|
from time import time
|
|
import ConfigParser
|
|
|
|
from six import iteritems
|
|
from libcloud.compute.types import Provider
|
|
from libcloud.compute.providers import get_driver
|
|
import libcloud.security as sec
|
|
|
|
try:
|
|
import json
|
|
except ImportError:
|
|
import simplejson as json
|
|
|
|
|
|
class LibcloudInventory(object):
|
|
def __init__(self):
|
|
''' Main execution path '''
|
|
|
|
# Inventory grouped by instance IDs, tags, security groups, regions,
|
|
# and availability zones
|
|
self.inventory = {}
|
|
|
|
# Index of hostname (address) to instance ID
|
|
self.index = {}
|
|
|
|
# Read settings and parse CLI arguments
|
|
self.read_settings()
|
|
self.parse_cli_args()
|
|
|
|
# Cache
|
|
if self.args.refresh_cache:
|
|
self.do_api_calls_update_cache()
|
|
elif not self.is_cache_valid():
|
|
self.do_api_calls_update_cache()
|
|
|
|
# Data to print
|
|
if self.args.host:
|
|
data_to_print = self.get_host_info()
|
|
|
|
elif self.args.list:
|
|
# Display list of instances for inventory
|
|
if len(self.inventory) == 0:
|
|
data_to_print = self.get_inventory_from_cache()
|
|
else:
|
|
data_to_print = self.json_format_dict(self.inventory, True)
|
|
|
|
print(data_to_print)
|
|
|
|
|
|
def is_cache_valid(self):
|
|
''' Determines if the cache files have expired, or if it is still valid '''
|
|
|
|
if os.path.isfile(self.cache_path_cache):
|
|
mod_time = os.path.getmtime(self.cache_path_cache)
|
|
current_time = time()
|
|
if (mod_time + self.cache_max_age) > current_time:
|
|
if os.path.isfile(self.cache_path_index):
|
|
return True
|
|
|
|
return False
|
|
|
|
|
|
def read_settings(self):
|
|
''' Reads the settings from the libcloud.ini file '''
|
|
|
|
config = ConfigParser.SafeConfigParser()
|
|
libcloud_default_ini_path = os.path.join(os.path.dirname(os.path.realpath(__file__)), 'libcloud.ini')
|
|
libcloud_ini_path = os.environ.get('LIBCLOUD_INI_PATH', libcloud_default_ini_path)
|
|
config.read(libcloud_ini_path)
|
|
|
|
if not config.has_section('driver'):
|
|
raise ValueError('libcloud.ini file must contain a [driver] section')
|
|
|
|
if config.has_option('driver', 'provider'):
|
|
self.provider = config.get('driver','provider')
|
|
else:
|
|
raise ValueError('libcloud.ini does not have a provider defined')
|
|
|
|
if config.has_option('driver', 'key'):
|
|
self.key = config.get('driver','key')
|
|
else:
|
|
raise ValueError('libcloud.ini does not have a key defined')
|
|
|
|
if config.has_option('driver', 'secret'):
|
|
self.secret = config.get('driver','secret')
|
|
else:
|
|
raise ValueError('libcloud.ini does not have a secret defined')
|
|
|
|
if config.has_option('driver', 'host'):
|
|
self.host = config.get('driver', 'host')
|
|
if config.has_option('driver', 'secure'):
|
|
self.secure = config.get('driver', 'secure')
|
|
if config.has_option('driver', 'verify_ssl_cert'):
|
|
self.verify_ssl_cert = config.get('driver', 'verify_ssl_cert')
|
|
if config.has_option('driver', 'port'):
|
|
self.port = config.get('driver', 'port')
|
|
if config.has_option('driver', 'path'):
|
|
self.path = config.get('driver', 'path')
|
|
if config.has_option('driver', 'api_version'):
|
|
self.api_version = config.get('driver', 'api_version')
|
|
|
|
Driver = get_driver(getattr(Provider, self.provider))
|
|
|
|
self.conn = Driver(key=self.key, secret=self.secret, secure=self.secure,
|
|
host=self.host, path=self.path)
|
|
|
|
# Cache related
|
|
cache_path = config.get('cache', 'cache_path')
|
|
self.cache_path_cache = cache_path + "/ansible-libcloud.cache"
|
|
self.cache_path_index = cache_path + "/ansible-libcloud.index"
|
|
self.cache_max_age = config.getint('cache', 'cache_max_age')
|
|
|
|
|
|
def parse_cli_args(self):
|
|
'''
|
|
Command line argument processing
|
|
'''
|
|
|
|
parser = argparse.ArgumentParser(description='Produce an Ansible Inventory file based on libcloud supported providers')
|
|
parser.add_argument('--list', action='store_true', default=True,
|
|
help='List instances (default: True)')
|
|
parser.add_argument('--host', action='store',
|
|
help='Get all the variables about a specific instance')
|
|
parser.add_argument('--refresh-cache', action='store_true', default=False,
|
|
help='Force refresh of cache by making API requests to libcloud supported providers (default: False - use cache files)')
|
|
self.args = parser.parse_args()
|
|
|
|
|
|
def do_api_calls_update_cache(self):
|
|
'''
|
|
Do API calls to a location, and save data in cache files
|
|
'''
|
|
|
|
self.get_nodes()
|
|
|
|
self.write_to_cache(self.inventory, self.cache_path_cache)
|
|
self.write_to_cache(self.index, self.cache_path_index)
|
|
|
|
|
|
def get_nodes(self):
|
|
'''
|
|
Gets the list of all nodes
|
|
'''
|
|
|
|
for node in self.conn.list_nodes():
|
|
self.add_node(node)
|
|
|
|
|
|
def get_node(self, node_id):
|
|
'''
|
|
Gets details about a specific node
|
|
'''
|
|
|
|
return [node for node in self.conn.list_nodes() if node.id == node_id][0]
|
|
|
|
|
|
def add_node(self, node):
|
|
'''
|
|
Adds a node to the inventory and index, as long as it is
|
|
addressable
|
|
'''
|
|
|
|
# Only want running instances
|
|
if node.state != 0:
|
|
return
|
|
|
|
# Select the best destination address
|
|
if not node.public_ips == []:
|
|
dest = node.public_ips[0]
|
|
if not dest:
|
|
# Skip instances we cannot address (e.g. private VPC subnet)
|
|
return
|
|
|
|
# Add to index
|
|
self.index[dest] = node.name
|
|
|
|
# Inventory: Group by instance ID (always a group of 1)
|
|
self.inventory[node.name] = [dest]
|
|
'''
|
|
# Inventory: Group by region
|
|
self.push(self.inventory, region, dest)
|
|
|
|
# Inventory: Group by availability zone
|
|
self.push(self.inventory, node.placement, dest)
|
|
|
|
# Inventory: Group by instance type
|
|
self.push(self.inventory, self.to_safe('type_' + node.instance_type), dest)
|
|
'''
|
|
# Inventory: Group by key pair
|
|
if node.extra['key_name']:
|
|
self.push(self.inventory, self.to_safe('key_' + node.extra['key_name']), dest)
|
|
|
|
# Inventory: Group by security group, quick thing to handle single sg
|
|
if node.extra['security_group']:
|
|
self.push(self.inventory, self.to_safe('sg_' + node.extra['security_group'][0]), dest)
|
|
|
|
# Inventory: Group by tag
|
|
if node.extra['tags']:
|
|
for tagkey in node.extra['tags'].keys():
|
|
self.push(self.inventory, self.to_safe('tag_' + tagkey + '_' + node.extra['tags'][tagkey]), dest)
|
|
|
|
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 migh not exist anymore
|
|
return self.json_format_dict({}, True)
|
|
|
|
node_id = self.index[self.args.host]
|
|
|
|
node = self.get_node(node_id)
|
|
instance_vars = {}
|
|
for key in vars(instance):
|
|
value = getattr(instance, key)
|
|
key = self.to_safe('ec2_' + key)
|
|
|
|
# Handle complex types
|
|
if 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_tags':
|
|
for k, v in iteritems(value):
|
|
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(group_ids)
|
|
instance_vars["ec2_security_group_names"] = ','.join(group_names)
|
|
else:
|
|
pass
|
|
# TODO Product codes if someone finds them useful
|
|
#print(key)
|
|
#print(type(value))
|
|
#print(value)
|
|
|
|
return self.json_format_dict(instance_vars, True)
|
|
|
|
|
|
def push(self, my_dict, key, element):
|
|
'''
|
|
Pushed an element onto an array that may not have been defined in
|
|
the dict
|
|
'''
|
|
|
|
if key in my_dict:
|
|
my_dict[key].append(element);
|
|
else:
|
|
my_dict[key] = [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)
|
|
|
|
def main():
|
|
LibcloudInventory()
|
|
|
|
if __name__ == '__main__':
|
|
main()
|