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#!/usr/bin/python
# -*- coding: utf-8 -*-
"""
Foreman management features
Copyright 2016 Guido Günther <agx@sigxcpu.org>
This software may be freely redistributed under the terms of the GNU
general public license.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
import os
import copy
DOCUMENTATION = '''
---
module: foremanhost
short_description: Manages machines in the foreman
description:
- Manages virtual machines in the I(Foreman).
options:
name:
description:
- name of the machine being managed.
required: true
hostgroup:
description:
- put the machine to the given hostgroup
required: false
default: null
api_url:
description:
- foreman connection url
required: true
api_user:
description:
- foreman connection user
required: true
api_password:
description:
- foreman connection password (can also be passwed via
ANSIBLE_FOREMAN_PW)
required: false
state:
description:
- state of the machine (e.g.'present')
required: true
ssl_verify:
description:
- Wether to verify SSL certs of the Foreman API
required: false
json:
description:
- additional JSON used to define the machine
required: false
default: {}
author:
- "Guido Günther"
'''
EXAMPLES = '''
# a playbook task line:
- foreman: name=foobar state=present
# a playbook example of defining and launching machine in the Foreman
tasks:
- foremanhost:
name: foobar
state: present
json: "{{ lookup('template', 'example.json') }}"
api_user: foreman
api_password: admin
api_url: http://localhost:3000/
'''
try:
import requests
except ImportError:
HAS_REQUESTE = False
else:
from requests.auth import HTTPBasicAuth
HAS_REQUESTS = True
FOREMAN_FAILED = 1
FOREMAN_SUCCESS = 0
def merge_json(name, hostgroup_id, customjson):
if customjson:
customdata = json.loads(customjson)
ret = copy.deepcopy(customdata)
if 'host' not in ret:
ret['host'] = {}
ret['host']['name'] = name
if hostgroup_id is not None:
ret['host']['hostgroup_id'] = hostgroup_id
return ret
# Post Data to Foreman
def do_post(url, data, params):
data = None if data is None else json.dumps(data)
ret = requests.post(url,
data=data,
**params)
ret.raise_for_status()
return dict(status=ret.status_code, text=ret.text)
def do_get(url, params):
ret = requests.get(url, **params)
ret.raise_for_status()
return dict(status=ret.status_code, text=ret.text)
def do_delete(url, data, params):
ret = requests.delete(url, **params)
ret.raise_for_status()
return dict(status=ret.status_code, text=ret.text)
def is_exists(e):
"""
Check if the error returned indicates an already existing entity
"""
if e.response.status_code != 422:
return False
err = json.loads(e.response.text)
try:
err_msg = err["error"]["errors"]
# Be careful to avoid IndexError so we can rethrow
# requests exceptoin
if ("name" in err_msg("name") and
err_msg["name"] == [u'has already been taken']):
return True
except IndexError:
return False
return False
def is_absent(e):
"""
Check if the error returned indicates an missing entity
"""
if e.response.status_code == 404:
return True
return False
def item_to_id(base_url, field, name, params):
url = base_url + "?search=%s=\"%s\"" % (field, name)
ret = do_get(url, params)
results = json.loads(ret['text'])['results']
if results == []:
return None
if len(results) > 1:
raise ValueError("Found more than item for '%s'" % name)
return "%s" % results[0]['id']
def core(module):
name = module.params.get('name', None)
hostgroup = module.params.get('hostgroup', None)
state = module.params.get('state', 'present')
customjson = module.params.get('json', None)
api_url = module.params.get('api_url', None)
api_user = module.params.get('api_user', None)
api_pw = module.params.get('api_password', os.getenv("ANSIBLE_FOREMAN_PW"))
ssl_verify = module.params.get('ssl_verify', True)
ret = {}
hostgroup_id = None
host_url = "%s/api/v2/hosts" % api_url
params = {'headers': {'Content-Type': 'application/json'},
'auth': HTTPBasicAuth(api_user, api_pw),
'verify': ssl_verify,
}
if state == 'present':
if hostgroup:
hostgroup_url = "%s/api/v2/hostgroups" % api_url
hostgroup_id = item_to_id(hostgroup_url, 'title', hostgroup, params)
if not hostgroup_id:
raise ValueError("Hostgroup '%s' not found for '%s'" % (hostgroup, name))
fulljson = merge_json(name, hostgroup_id, customjson)
try:
ret = do_post(host_url, fulljson, params)
ret['changed'] = True
except requests.exceptions.HTTPError as e:
if is_exists(e):
ret['changed'] = False
else:
raise
elif state == 'absent':
host_id = item_to_id(host_url, 'name', name, params)
if host_id is None:
ret['changed'] = False
return FOREMAN_SUCCESS, ret
try:
url = os.path.join(host_url, host_id)
ret = do_delete(url, None, params)
ret['changed'] = True
except requests.exceptions.HTTPError as e:
if is_absent(e):
ret['changed'] = False
else:
raise
else:
raise ValueError("Unknown state %s" % state)
return FOREMAN_SUCCESS, ret
def main():
module = AnsibleModule(argument_spec=dict(
name=dict(required=True),
hostgroup=dict(),
json=dict(),
state=dict(default='present', choices=['present', 'absent']),
api_url=dict(required=True),
api_user=dict(required=True),
api_password=dict(),
ssl_verify=dict(),
))
if not HAS_REQUESTS:
module.fail_json(
msg='The `requests` module is not importable. Check the requirements.'
)
rc = FOREMAN_FAILED
try:
rc, result = core(module)
except Exception as e:
module.fail_json(msg=str(e))
if rc != 0: # something went wrong emit the msg
module.fail_json(rc=rc, msg=result)
else:
module.exit_json(**result)
# import module snippets
from ansible.module_utils.basic import *
main()
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