#!/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': '', 'validate_certs': True, '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'].items(): 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')) self.validate_certs = os.environ.get('VMWARE_VALIDATE_CERTS', config.get('vmware', 'validate_certs')) if self.validate_certs in ['no', 'false', 'False', False]: self.validate_certs = False else: self.validate_certs = True # 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') and not self.validate_certs: context = ssl.SSLContext(ssl.PROTOCOL_SSLv23) 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.items(): 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.items(): 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.items(): 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'].items(): 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): if vobj.isalnum(): rdata = vobj else: rdata = vobj.decode('ascii', 'ignore') 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())