2016-11-02 22:47:42 +01:00
|
|
|
#!/usr/bin/env python
|
2015-09-15 09:53:34 +02:00
|
|
|
|
|
|
|
'''
|
|
|
|
nsot
|
|
|
|
====
|
|
|
|
|
|
|
|
Ansible Dynamic Inventory to pull hosts from NSoT, a flexible CMDB by Dropbox
|
|
|
|
|
|
|
|
Features
|
|
|
|
--------
|
|
|
|
|
|
|
|
* Define host groups in form of NSoT device attribute criteria
|
|
|
|
|
|
|
|
* All parameters defined by the spec as of 2015-09-05 are supported.
|
|
|
|
|
|
|
|
+ ``--list``: Returns JSON hash of host groups -> hosts and top-level
|
|
|
|
``_meta`` -> ``hostvars`` which correspond to all device attributes.
|
|
|
|
|
|
|
|
Group vars can be specified in the YAML configuration, noted below.
|
|
|
|
|
|
|
|
+ ``--host <hostname>``: Returns JSON hash where every item is a device
|
|
|
|
attribute.
|
|
|
|
|
|
|
|
* In addition to all attributes assigned to resource being returned, script
|
|
|
|
will also append ``site_id`` and ``id`` as facts to utilize.
|
|
|
|
|
|
|
|
|
|
|
|
Confguration
|
|
|
|
------------
|
|
|
|
|
|
|
|
Since it'd be annoying and failure prone to guess where you're configuration
|
|
|
|
file is, use ``NSOT_INVENTORY_CONFIG`` to specify the path to it.
|
|
|
|
|
|
|
|
This file should adhere to the YAML spec. All top-level variable must be
|
|
|
|
desired Ansible group-name hashed with single 'query' item to define the NSoT
|
|
|
|
attribute query.
|
|
|
|
|
|
|
|
Queries follow the normal NSoT query syntax, `shown here`_
|
|
|
|
|
|
|
|
.. _shown here: https://github.com/dropbox/pynsot#set-queries
|
|
|
|
|
|
|
|
.. code:: yaml
|
|
|
|
|
|
|
|
routers:
|
|
|
|
query: 'deviceType=ROUTER'
|
|
|
|
vars:
|
|
|
|
a: b
|
|
|
|
c: d
|
|
|
|
|
|
|
|
juniper_fw:
|
|
|
|
query: 'deviceType=FIREWALL manufacturer=JUNIPER'
|
|
|
|
|
|
|
|
not_f10:
|
|
|
|
query: '-manufacturer=FORCE10'
|
|
|
|
|
|
|
|
The inventory will automatically use your ``.pynsotrc`` like normal pynsot from
|
|
|
|
cli would, so make sure that's configured appropriately.
|
|
|
|
|
|
|
|
.. note::
|
|
|
|
|
|
|
|
Attributes I'm showing above are influenced from ones that the Trigger
|
|
|
|
project likes. As is the spirit of NSoT, use whichever attributes work best
|
|
|
|
for your workflow.
|
|
|
|
|
|
|
|
If config file is blank or absent, the following default groups will be
|
|
|
|
created:
|
|
|
|
|
|
|
|
* ``routers``: deviceType=ROUTER
|
|
|
|
* ``switches``: deviceType=SWITCH
|
|
|
|
* ``firewalls``: deviceType=FIREWALL
|
|
|
|
|
|
|
|
These are likely not useful for everyone so please use the configuration. :)
|
|
|
|
|
|
|
|
.. note::
|
|
|
|
|
|
|
|
By default, resources will only be returned for what your default
|
|
|
|
site is set for in your ``~/.pynsotrc``.
|
|
|
|
|
|
|
|
If you want to specify, add an extra key under the group for ``site: n``.
|
|
|
|
|
|
|
|
Output Examples
|
|
|
|
---------------
|
|
|
|
|
|
|
|
Here are some examples shown from just calling the command directly::
|
|
|
|
|
|
|
|
$ NSOT_INVENTORY_CONFIG=$PWD/test.yaml ansible_nsot --list | jq '.'
|
|
|
|
{
|
|
|
|
"routers": {
|
|
|
|
"hosts": [
|
|
|
|
"test1.example.com"
|
|
|
|
],
|
|
|
|
"vars": {
|
|
|
|
"cool_level": "very",
|
|
|
|
"group": "routers"
|
|
|
|
}
|
|
|
|
},
|
|
|
|
"firewalls": {
|
|
|
|
"hosts": [
|
|
|
|
"test2.example.com"
|
|
|
|
],
|
|
|
|
"vars": {
|
|
|
|
"cool_level": "enough",
|
|
|
|
"group": "firewalls"
|
|
|
|
}
|
|
|
|
},
|
|
|
|
"_meta": {
|
|
|
|
"hostvars": {
|
|
|
|
"test2.example.com": {
|
|
|
|
"make": "SRX",
|
|
|
|
"site_id": 1,
|
|
|
|
"id": 108
|
|
|
|
},
|
|
|
|
"test1.example.com": {
|
|
|
|
"make": "MX80",
|
|
|
|
"site_id": 1,
|
|
|
|
"id": 107
|
|
|
|
}
|
|
|
|
}
|
|
|
|
},
|
|
|
|
"rtr_and_fw": {
|
|
|
|
"hosts": [
|
|
|
|
"test1.example.com",
|
|
|
|
"test2.example.com"
|
|
|
|
],
|
|
|
|
"vars": {}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
$ NSOT_INVENTORY_CONFIG=$PWD/test.yaml ansible_nsot --host test1 | jq '.'
|
|
|
|
{
|
|
|
|
"make": "MX80",
|
|
|
|
"site_id": 1,
|
|
|
|
"id": 107
|
|
|
|
}
|
|
|
|
|
|
|
|
'''
|
|
|
|
|
|
|
|
from __future__ import print_function
|
|
|
|
import sys
|
|
|
|
import os
|
|
|
|
import pkg_resources
|
|
|
|
import argparse
|
|
|
|
import json
|
|
|
|
import yaml
|
|
|
|
from textwrap import dedent
|
|
|
|
from pynsot.client import get_api_client
|
|
|
|
from pynsot.app import HttpServerError
|
|
|
|
from click.exceptions import UsageError
|
|
|
|
|
2019-04-09 19:17:59 +02:00
|
|
|
from ansible.module_utils.six import string_types
|
2015-09-15 09:53:34 +02:00
|
|
|
|
2017-05-09 23:38:08 +02:00
|
|
|
|
2015-09-15 09:53:34 +02:00
|
|
|
def warning(*objs):
|
2017-01-31 00:01:47 +01:00
|
|
|
print("WARNING: ", *objs, file=sys.stderr)
|
2015-09-15 09:53:34 +02:00
|
|
|
|
|
|
|
|
|
|
|
class NSoTInventory(object):
|
|
|
|
'''NSoT Client object for gather inventory'''
|
|
|
|
|
|
|
|
def __init__(self):
|
|
|
|
self.config = dict()
|
|
|
|
config_env = os.environ.get('NSOT_INVENTORY_CONFIG')
|
|
|
|
if config_env:
|
|
|
|
try:
|
|
|
|
config_file = os.path.abspath(config_env)
|
|
|
|
except IOError: # If file non-existent, use default config
|
|
|
|
self._config_default()
|
|
|
|
except Exception as e:
|
|
|
|
sys.exit('%s\n' % e)
|
|
|
|
|
|
|
|
with open(config_file) as f:
|
|
|
|
try:
|
|
|
|
self.config.update(yaml.safe_load(f))
|
|
|
|
except TypeError: # If empty file, use default config
|
|
|
|
warning('Empty config file')
|
|
|
|
self._config_default()
|
|
|
|
except Exception as e:
|
|
|
|
sys.exit('%s\n' % e)
|
|
|
|
else: # Use defaults if env var missing
|
|
|
|
self._config_default()
|
|
|
|
self.groups = self.config.keys()
|
|
|
|
self.client = get_api_client()
|
|
|
|
self._meta = {'hostvars': dict()}
|
|
|
|
|
|
|
|
def _config_default(self):
|
|
|
|
default_yaml = '''
|
|
|
|
---
|
|
|
|
routers:
|
|
|
|
query: deviceType=ROUTER
|
|
|
|
switches:
|
|
|
|
query: deviceType=SWITCH
|
|
|
|
firewalls:
|
|
|
|
query: deviceType=FIREWALL
|
|
|
|
'''
|
|
|
|
self.config = yaml.safe_load(dedent(default_yaml))
|
|
|
|
|
|
|
|
def do_list(self):
|
|
|
|
'''Direct callback for when ``--list`` is provided
|
|
|
|
|
|
|
|
Relies on the configuration generated from init to run
|
|
|
|
_inventory_group()
|
|
|
|
'''
|
|
|
|
inventory = dict()
|
2016-12-13 16:47:08 +01:00
|
|
|
for group, contents in self.config.items():
|
2015-09-15 09:53:34 +02:00
|
|
|
group_response = self._inventory_group(group, contents)
|
|
|
|
inventory.update(group_response)
|
|
|
|
inventory.update({'_meta': self._meta})
|
|
|
|
return json.dumps(inventory)
|
|
|
|
|
|
|
|
def do_host(self, host):
|
|
|
|
return json.dumps(self._hostvars(host))
|
|
|
|
|
|
|
|
def _hostvars(self, host):
|
|
|
|
'''Return dictionary of all device attributes
|
|
|
|
|
|
|
|
Depending on number of devices in NSoT, could be rather slow since this
|
|
|
|
has to request every device resource to filter through
|
|
|
|
'''
|
2017-02-10 20:46:55 +01:00
|
|
|
device = [i for i in self.client.devices.get()
|
2015-09-15 09:53:34 +02:00
|
|
|
if host in i['hostname']][0]
|
|
|
|
attributes = device['attributes']
|
|
|
|
attributes.update({'site_id': device['site_id'], 'id': device['id']})
|
|
|
|
return attributes
|
|
|
|
|
|
|
|
def _inventory_group(self, group, contents):
|
|
|
|
'''Takes a group and returns inventory for it as dict
|
|
|
|
|
|
|
|
:param group: Group name
|
|
|
|
:type group: str
|
|
|
|
:param contents: The contents of the group's YAML config
|
|
|
|
:type contents: dict
|
|
|
|
|
|
|
|
contents param should look like::
|
|
|
|
|
|
|
|
{
|
|
|
|
'query': 'xx',
|
|
|
|
'vars':
|
|
|
|
'a': 'b'
|
|
|
|
}
|
|
|
|
|
|
|
|
Will return something like::
|
|
|
|
|
|
|
|
{ group: {
|
|
|
|
hosts: [],
|
|
|
|
vars: {},
|
|
|
|
}
|
|
|
|
'''
|
|
|
|
query = contents.get('query')
|
|
|
|
hostvars = contents.get('vars', dict())
|
|
|
|
site = contents.get('site', dict())
|
|
|
|
obj = {group: dict()}
|
|
|
|
obj[group]['hosts'] = []
|
|
|
|
obj[group]['vars'] = hostvars
|
|
|
|
try:
|
2016-08-23 22:13:44 +02:00
|
|
|
assert isinstance(query, string_types)
|
2018-09-08 02:59:46 +02:00
|
|
|
except Exception:
|
2015-09-15 09:53:34 +02:00
|
|
|
sys.exit('ERR: Group queries must be a single string\n'
|
|
|
|
' Group: %s\n'
|
|
|
|
' Query: %s\n' % (group, query)
|
|
|
|
)
|
|
|
|
try:
|
|
|
|
if site:
|
|
|
|
site = self.client.sites(site)
|
|
|
|
devices = site.devices.query.get(query=query)
|
|
|
|
else:
|
|
|
|
devices = self.client.devices.query.get(query=query)
|
|
|
|
except HttpServerError as e:
|
|
|
|
if '500' in str(e.response):
|
|
|
|
_site = 'Correct site id?'
|
|
|
|
_attr = 'Queried attributes actually exist?'
|
|
|
|
questions = _site + '\n' + _attr
|
|
|
|
sys.exit('ERR: 500 from server.\n%s' % questions)
|
|
|
|
else:
|
|
|
|
raise
|
|
|
|
except UsageError:
|
|
|
|
sys.exit('ERR: Could not connect to server. Running?')
|
|
|
|
|
|
|
|
# Would do a list comprehension here, but would like to save code/time
|
|
|
|
# and also acquire attributes in this step
|
2017-02-10 20:46:55 +01:00
|
|
|
for host in devices:
|
2015-09-15 09:53:34 +02:00
|
|
|
# Iterate through each device that matches query, assign hostname
|
|
|
|
# to the group's hosts array and then use this single iteration as
|
|
|
|
# a chance to update self._meta which will be used in the final
|
|
|
|
# return
|
|
|
|
hostname = host['hostname']
|
|
|
|
obj[group]['hosts'].append(hostname)
|
|
|
|
attributes = host['attributes']
|
|
|
|
attributes.update({'site_id': host['site_id'], 'id': host['id']})
|
|
|
|
self._meta['hostvars'].update({hostname: attributes})
|
|
|
|
|
|
|
|
return obj
|
|
|
|
|
|
|
|
|
|
|
|
def parse_args():
|
|
|
|
desc = __doc__.splitlines()[4] # Just to avoid being redundant
|
|
|
|
|
|
|
|
# Establish parser with options and error out if no action provided
|
|
|
|
parser = argparse.ArgumentParser(
|
|
|
|
description=desc,
|
|
|
|
conflict_handler='resolve',
|
|
|
|
)
|
|
|
|
|
|
|
|
# Arguments
|
|
|
|
#
|
|
|
|
# Currently accepting (--list | -l) and (--host | -h)
|
|
|
|
# These must not be allowed together
|
|
|
|
parser.add_argument(
|
|
|
|
'--list', '-l',
|
|
|
|
help='Print JSON object containing hosts to STDOUT',
|
|
|
|
action='store_true',
|
|
|
|
dest='list_', # Avoiding syntax highlighting for list
|
|
|
|
)
|
|
|
|
|
|
|
|
parser.add_argument(
|
|
|
|
'--host', '-h',
|
|
|
|
help='Print JSON object containing hostvars for <host>',
|
|
|
|
action='store',
|
|
|
|
)
|
|
|
|
args = parser.parse_args()
|
|
|
|
|
|
|
|
if not args.list_ and not args.host: # Require at least one option
|
|
|
|
parser.exit(status=1, message='No action requested')
|
|
|
|
|
|
|
|
if args.list_ and args.host: # Do not allow multiple options
|
|
|
|
parser.exit(status=1, message='Too many actions requested')
|
|
|
|
|
|
|
|
return args
|
|
|
|
|
|
|
|
|
|
|
|
def main():
|
|
|
|
'''Set up argument handling and callback routing'''
|
|
|
|
args = parse_args()
|
|
|
|
client = NSoTInventory()
|
|
|
|
|
|
|
|
# Callback condition
|
|
|
|
if args.list_:
|
|
|
|
print(client.do_list())
|
|
|
|
elif args.host:
|
|
|
|
print(client.do_host(args.host))
|
|
|
|
|
2018-07-29 13:46:06 +02:00
|
|
|
|
2015-09-15 09:53:34 +02:00
|
|
|
if __name__ == '__main__':
|
|
|
|
main()
|