ansible/contrib/inventory/vmware_inventory.py

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#!/usr/bin/env python
# Requirements
# - pyvmomi >= 6.0.0.2016.4
# TODO:
# * more jq examples
# * optional folder heirarchy
"""
$ jq '._meta.hostvars[].config' data.json | head
{
"alternateguestname": "",
"instanceuuid": "5035a5cd-b8e8-d717-e133-2d383eb0d675",
"memoryhotaddenabled": false,
"guestfullname": "Red Hat Enterprise Linux 7 (64-bit)",
"changeversion": "2016-05-16T18:43:14.977925Z",
"uuid": "4235fc97-5ddb-7a17-193b-9a3ac97dc7b4",
"cpuhotremoveenabled": false,
"vpmcenabled": false,
"firmware": "bios",
"""
from __future__ import print_function
import argparse
import atexit
import datetime
import getpass
import jinja2
import os
import six
import ssl
import sys
import uuid
from collections import defaultdict
from six.moves import configparser
from time import time
HAS_PYVMOMI = False
try:
from pyVmomi import vim
from pyVim.connect import SmartConnect, Disconnect
HAS_PYVMOMI = True
except ImportError:
pass
try:
import json
except ImportError:
import simplejson as json
hasvcr = False
try:
import vcr
hasvcr = True
except ImportError:
pass
class VMWareInventory(object):
__name__ = 'VMWareInventory'
instances = []
debug = False
load_dumpfile = None
write_dumpfile = None
maxlevel = 1
lowerkeys = True
config = None
cache_max_age = None
cache_path_cache = None
cache_path_index = None
server = None
port = None
username = None
password = None
host_filters = []
groupby_patterns = []
bad_types = ['Array', 'disabledMethod', 'declaredAlarmState']
if (sys.version_info > (3, 0)):
safe_types = [int, bool, str, float, None]
else:
safe_types = [int, long, bool, str, float, None]
iter_types = [dict, list]
skip_keys = ['dynamicproperty', 'dynamictype', 'managedby', 'childtype']
def _empty_inventory(self):
return {"_meta" : {"hostvars" : {}}}
def __init__(self, load=True):
self.inventory = self._empty_inventory()
if load:
# Read settings and parse CLI arguments
self.parse_cli_args()
self.read_settings()
# Check the cache
cache_valid = self.is_cache_valid()
# Handle Cache
if self.args.refresh_cache or not cache_valid:
self.do_api_calls_update_cache()
else:
self.debugl('# loading inventory from cache')
self.inventory = self.get_inventory_from_cache()
def debugl(self, text):
if self.args.debug:
try:
text = str(text)
except UnicodeEncodeError:
text = text.encode('ascii','ignore')
print(text)
def show(self):
# Data to print
data_to_print = None
if self.args.host:
data_to_print = self.get_host_info(self.args.host)
elif self.args.list:
# Display list of instances for inventory
data_to_print = self.inventory
return json.dumps(data_to_print, indent=2)
def is_cache_valid(self):
''' Determines if the cache files have expired, or if it is still valid '''
valid = False
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:
valid = True
return valid
def do_api_calls_update_cache(self):
''' Get instances and cache the data '''
instances = self.get_instances()
self.instances = instances
self.inventory = self.instances_to_inventory(instances)
self.write_to_cache(self.inventory, self.cache_path_cache)
def write_to_cache(self, data, cache_path):
''' Dump inventory to json file '''
with open(self.cache_path_cache, 'wb') as f:
f.write(json.dumps(data))
def get_inventory_from_cache(self):
''' Read in jsonified inventory '''
jdata = None
with open(self.cache_path_cache, 'rb') as f:
jdata = f.read()
return json.loads(jdata)
def read_settings(self):
''' Reads the settings from the vmware_inventory.ini file '''
scriptbasename = __file__
scriptbasename = os.path.basename(scriptbasename)
scriptbasename = scriptbasename.replace('.py', '')
defaults = {'vmware': {
'server': '',
'port': 443,
'username': '',
'password': '',
'ini_path': os.path.join(os.path.dirname(__file__), '%s.ini' % scriptbasename),
'cache_name': 'ansible-vmware',
'cache_path': '~/.ansible/tmp',
'cache_max_age': 3600,
'max_object_level': 1,
'alias_pattern': '{{ config.name + "_" + config.uuid }}',
'host_pattern': '{{ guest.ipaddress }}',
'host_filters': '{{ guest.gueststate == "running" }}',
'groupby_patterns': '{{ guest.guestid }},{{ "templates" if config.template else "guests"}}',
'lower_var_keys': True }
}
if six.PY3:
config = configparser.ConfigParser()
else:
config = configparser.SafeConfigParser()
# where is the config?
vmware_ini_path = os.environ.get('VMWARE_INI_PATH', defaults['vmware']['ini_path'])
vmware_ini_path = os.path.expanduser(os.path.expandvars(vmware_ini_path))
config.read(vmware_ini_path)
# apply defaults
for k,v in defaults['vmware'].iteritems():
if not config.has_option('vmware', k):
config.set('vmware', k, str(v))
# where is the cache?
self.cache_dir = os.path.expanduser(config.get('vmware', 'cache_path'))
if self.cache_dir and not os.path.exists(self.cache_dir):
os.makedirs(self.cache_dir)
# set the cache filename and max age
cache_name = config.get('vmware', 'cache_name')
self.cache_path_cache = self.cache_dir + "/%s.cache" % cache_name
self.cache_max_age = int(config.getint('vmware', 'cache_max_age'))
# mark the connection info
self.server = os.environ.get('VMWARE_SERVER', config.get('vmware', 'server'))
self.port = int(os.environ.get('VMWARE_PORT', config.get('vmware', 'port')))
self.username = os.environ.get('VMWARE_USERNAME', config.get('vmware', 'username'))
self.password = os.environ.get('VMWARE_PASSWORD', config.get('vmware', 'password'))
# behavior control
self.maxlevel = int(config.get('vmware', 'max_object_level'))
self.lowerkeys = config.get('vmware', 'lower_var_keys')
if type(self.lowerkeys) != bool:
if str(self.lowerkeys).lower() in ['yes', 'true', '1']:
self.lowerkeys = True
else:
self.lowerkeys = False
self.host_filters = list(config.get('vmware', 'host_filters').split(','))
self.groupby_patterns = list(config.get('vmware', 'groupby_patterns').split(','))
# save the config
self.config = config
def parse_cli_args(self):
''' Command line argument processing '''
parser = argparse.ArgumentParser(description='Produce an Ansible Inventory file based on PyVmomi')
parser.add_argument('--debug', action='store_true', default=False,
help='show debug info')
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 VSphere (default: False - use cache files)')
parser.add_argument('--max-instances', default=None, type=int,
help='maximum number of instances to retrieve')
self.args = parser.parse_args()
def get_instances(self):
''' Get a list of vm instances with pyvmomi '''
instances = []
kwargs = {'host': self.server,
'user': self.username,
'pwd': self.password,
'port': int(self.port) }
if hasattr(ssl, 'SSLContext'):
# older ssl libs do not have an SSLContext method:
# context = ssl.SSLContext(ssl.PROTOCOL_TLSv1)
# AttributeError: 'module' object has no attribute 'SSLContext'
# older pyvmomi version also do not have an sslcontext kwarg:
# https://github.com/vmware/pyvmomi/commit/92c1de5056be7c5390ac2a28eb08ad939a4b7cdd
context = ssl.SSLContext(ssl.PROTOCOL_TLSv1)
context.verify_mode = ssl.CERT_NONE
kwargs['sslContext'] = context
instances = self._get_instances(kwargs)
return instances
def _get_instances(self, inkwargs):
''' Make API calls '''
instances = []
si = SmartConnect(**inkwargs)
self.debugl('# retrieving instances')
if not si:
print("Could not connect to the specified host using specified "
"username and password")
return -1
atexit.register(Disconnect, si)
content = si.RetrieveContent()
# Create a search container for virtualmachines
container = content.rootFolder
viewType = [vim.VirtualMachine]
recursive = True
containerView = content.viewManager.CreateContainerView(container, viewType, recursive)
children = containerView.view
for child in children:
# If requested, limit the total number of instances
if self.args.max_instances:
if len(instances) >= (self.args.max_instances):
break
instances.append(child)
self.debugl("# total instances retrieved %s" % len(instances))
instance_tuples = []
for instance in sorted(instances):
ifacts = self.facts_from_vobj(instance)
instance_tuples.append((instance, ifacts))
return instance_tuples
def instances_to_inventory(self, instances):
''' Convert a list of vm objects into a json compliant inventory '''
inventory = self._empty_inventory()
inventory['all'] = {}
inventory['all']['hosts'] = []
last_idata = None
total = len(instances)
for idx,instance in enumerate(instances):
# make a unique id for this object to avoid vmware's
# numerous uuid's which aren't all unique.
thisid = str(uuid.uuid4())
idata = instance[1]
# Put it in the inventory
inventory['all']['hosts'].append(thisid)
inventory['_meta']['hostvars'][thisid] = idata.copy()
inventory['_meta']['hostvars'][thisid]['ansible_uuid'] = thisid
# Make a map of the uuid to the alias the user wants
name_mapping = self.create_template_mapping(inventory,
self.config.get('vmware', 'alias_pattern'))
# Make a map of the uuid to the ssh hostname the user wants
host_mapping = self.create_template_mapping(inventory,
self.config.get('vmware', 'host_pattern'))
# Reset the inventory keys
for k,v in name_mapping.iteritems():
if not host_mapping or not k in host_mapping:
continue
# set ansible_host (2.x)
try:
inventory['_meta']['hostvars'][k]['ansible_host'] = host_mapping[k]
# 1.9.x backwards compliance
inventory['_meta']['hostvars'][k]['ansible_ssh_host'] = host_mapping[k]
except Exception as e:
continue
if k == v:
continue
# add new key
inventory['all']['hosts'].append(v)
inventory['_meta']['hostvars'][v] = inventory['_meta']['hostvars'][k]
# cleanup old key
inventory['all']['hosts'].remove(k)
inventory['_meta']['hostvars'].pop(k, None)
self.debugl('# pre-filtered hosts:')
for i in inventory['all']['hosts']:
self.debugl('# * %s' % i)
# Apply host filters
for hf in self.host_filters:
if not hf:
continue
self.debugl('# filter: %s' % hf)
filter_map = self.create_template_mapping(inventory, hf, dtype='boolean')
for k,v in filter_map.iteritems():
if not v:
# delete this host
inventory['all']['hosts'].remove(k)
inventory['_meta']['hostvars'].pop(k, None)
self.debugl('# post-filter hosts:')
for i in inventory['all']['hosts']:
self.debugl('# * %s' % i)
# Create groups
for gbp in self.groupby_patterns:
groupby_map = self.create_template_mapping(inventory, gbp)
for k,v in groupby_map.iteritems():
if v not in inventory:
inventory[v] = {}
inventory[v]['hosts'] = []
if k not in inventory[v]['hosts']:
inventory[v]['hosts'].append(k)
return inventory
def create_template_mapping(self, inventory, pattern, dtype='string'):
''' Return a hash of uuid to templated string from pattern '''
mapping = {}
for k,v in inventory['_meta']['hostvars'].iteritems():
t = jinja2.Template(pattern)
newkey = None
try:
newkey = t.render(v)
newkey = newkey.strip()
except Exception as e:
self.debugl(e)
if not newkey:
continue
elif dtype == 'integer':
newkey = int(newkey)
elif dtype == 'boolean':
if newkey.lower() == 'false':
newkey = False
elif newkey.lower() == 'true':
newkey = True
elif dtype == 'string':
pass
mapping[k] = newkey
return mapping
def facts_from_vobj(self, vobj, level=0):
''' Traverse a VM object and return a json compliant data structure '''
# pyvmomi objects are not yet serializable, but may be one day ...
# https://github.com/vmware/pyvmomi/issues/21
# WARNING:
# Accessing an object attribute will trigger a SOAP call to the remote.
# Increasing the attributes collected or the depth of recursion greatly
# increases runtime duration and potentially memory+network utilization.
if level == 0:
try:
self.debugl("# get facts: %s" % vobj.name)
except Exception as e:
self.debugl(e)
rdata = {}
methods = dir(vobj)
methods = [str(x) for x in methods if not x.startswith('_')]
methods = [x for x in methods if not x in self.bad_types]
methods = sorted(methods)
for method in methods:
# Attempt to get the method, skip on fail
try:
methodToCall = getattr(vobj, method)
except Exception as e:
continue
# Skip callable methods
if callable(methodToCall):
continue
if self.lowerkeys:
method = method.lower()
rdata[method] = self._process_object_types(methodToCall)
return rdata
def _process_object_types(self, vobj, level=0):
''' Serialize an object '''
rdata = {}
if vobj is None:
rdata = None
elif issubclass(type(vobj), str) or isinstance(vobj, str):
rdata = vobj
elif issubclass(type(vobj), bool) or isinstance(vobj, bool):
rdata = vobj
elif issubclass(type(vobj), int) or isinstance(vobj, int):
rdata = vobj
elif issubclass(type(vobj), float) or isinstance(vobj, float):
rdata = vobj
elif issubclass(type(vobj), long) or isinstance(vobj, long):
rdata = vobj
elif issubclass(type(vobj), list) or issubclass(type(vobj), tuple):
rdata = []
try:
vobj = sorted(vobj)
except Exception as e:
pass
for vi in vobj:
if (level+1 <= self.maxlevel):
#vid = self.facts_from_vobj(vi, level=(level+1))
vid = self._process_object_types(vi, level=(level+1))
if vid:
rdata.append(vid)
elif issubclass(type(vobj), dict):
pass
elif issubclass(type(vobj), object):
methods = dir(vobj)
methods = [str(x) for x in methods if not x.startswith('_')]
methods = [x for x in methods if not x in self.bad_types]
methods = sorted(methods)
for method in methods:
# Attempt to get the method, skip on fail
try:
methodToCall = getattr(vobj, method)
except Exception as e:
continue
if callable(methodToCall):
continue
if self.lowerkeys:
method = method.lower()
if (level+1 <= self.maxlevel):
rdata[method] = self._process_object_types(methodToCall, level=(level+1))
else:
pass
if not rdata:
rdata = None
return rdata
def get_host_info(self, host):
''' Return hostvars for a single host '''
return self.inventory['_meta']['hostvars'][host]
if __name__ == "__main__":
# Run the script
print(VMWareInventory().show())