ansible/cloud/centurylink/clc_alert_policy.py

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#!/usr/bin/python
#
# Copyright (c) 2015 CenturyLink
#
# 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/>
#
DOCUMENTATION = '''
module: clc_alert_policy
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short_description: Create or Delete Alert Policies at CenturyLink Cloud.
description:
- An Ansible module to Create or Delete Alert Policies at CenturyLink Cloud.
version_added: "2.0"
options:
alias:
description:
- The alias of your CLC Account
required: True
name:
description:
- The name of the alert policy. This is mutually exclusive with id
required: False
default: None
id:
description:
- The alert policy id. This is mutually exclusive with name
required: False
default: None
alert_recipients:
description:
- A list of recipient email ids to notify the alert.
This is required for state 'present'
required: False
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default: None
metric:
description:
- The metric on which to measure the condition that will trigger the alert.
This is required for state 'present'
required: False
default: None
choices: ['cpu','memory','disk']
duration:
description:
- The length of time in minutes that the condition must exceed the threshold.
This is required for state 'present'
required: False
default: None
threshold:
description:
- The threshold that will trigger the alert when the metric equals or exceeds it.
This is required for state 'present'
This number represents a percentage and must be a value between 5.0 - 95.0 that is a multiple of 5.0
required: False
default: None
state:
description:
- Whether to create or delete the policy.
required: False
default: present
choices: ['present','absent']
requirements:
- python = 2.7
- requests >= 2.5.0
- clc-sdk
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author: "CLC Runner (@clc-runner)"
notes:
- To use this module, it is required to set the below environment variables which enables access to the
Centurylink Cloud
- CLC_V2_API_USERNAME, the account login id for the centurylink cloud
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- CLC_V2_API_PASSWORD, the account password for the centurylink cloud
- Alternatively, the module accepts the API token and account alias. The API token can be generated using the
CLC account login and password via the HTTP api call @ https://api.ctl.io/v2/authentication/login
- CLC_V2_API_TOKEN, the API token generated from https://api.ctl.io/v2/authentication/login
- CLC_ACCT_ALIAS, the account alias associated with the centurylink cloud
- Users can set CLC_V2_API_URL to specify an endpoint for pointing to a different CLC environment.
'''
EXAMPLES = '''
# Note - You must set the CLC_V2_API_USERNAME And CLC_V2_API_PASSWD Environment variables before running these examples
---
- name: Create Alert Policy Example
hosts: localhost
gather_facts: False
connection: local
tasks:
- name: Create an Alert Policy for disk above 80% for 5 minutes
clc_alert_policy:
alias: wfad
name: 'alert for disk > 80%'
alert_recipients:
- test1@centurylink.com
- test2@centurylink.com
metric: 'disk'
duration: '00:05:00'
threshold: 80
state: present
register: policy
- name: debug
debug: var=policy
---
- name: Delete Alert Policy Example
hosts: localhost
gather_facts: False
connection: local
tasks:
- name: Delete an Alert Policy
clc_alert_policy:
alias: wfad
name: 'alert for disk > 80%'
state: absent
register: policy
- name: debug
debug: var=policy
'''
RETURN = '''
policy:
description: The alert policy information
returned: success
type: dict
sample:
{
"actions": [
{
"action": "email",
"settings": {
"recipients": [
"user1@domain.com",
"user1@domain.com"
]
}
}
],
"id": "ba54ac54a60d4a4f1ed6d48c1ce240a7",
"links": [
{
"href": "/v2/alertPolicies/alias/ba54ac54a60d4a4fb1d6d48c1ce240a7",
"rel": "self",
"verbs": [
"GET",
"DELETE",
"PUT"
]
}
],
"name": "test_alert",
"triggers": [
{
"duration": "00:05:00",
"metric": "disk",
"threshold": 80.0
}
]
}
'''
__version__ = '${version}'
from distutils.version import LooseVersion
try:
import requests
except ImportError:
REQUESTS_FOUND = False
else:
REQUESTS_FOUND = True
#
# Requires the clc-python-sdk.
# sudo pip install clc-sdk
#
try:
import clc as clc_sdk
from clc import APIFailedResponse
except ImportError:
CLC_FOUND = False
clc_sdk = None
else:
CLC_FOUND = True
class ClcAlertPolicy:
clc = clc_sdk
module = None
def __init__(self, module):
"""
Construct module
"""
self.module = module
self.policy_dict = {}
if not CLC_FOUND:
self.module.fail_json(
msg='clc-python-sdk required for this module')
if not REQUESTS_FOUND:
self.module.fail_json(
msg='requests library is required for this module')
if requests.__version__ and LooseVersion(requests.__version__) < LooseVersion('2.5.0'):
self.module.fail_json(
msg='requests library version should be >= 2.5.0')
self._set_user_agent(self.clc)
@staticmethod
def _define_module_argument_spec():
"""
Define the argument spec for the ansible module
:return: argument spec dictionary
"""
argument_spec = dict(
name=dict(default=None),
id=dict(default=None),
alias=dict(required=True, default=None),
alert_recipients=dict(type='list', default=None),
metric=dict(
choices=[
'cpu',
'memory',
'disk'],
default=None),
duration=dict(type='str', default=None),
threshold=dict(type='int', default=None),
state=dict(default='present', choices=['present', 'absent'])
)
mutually_exclusive = [
['name', 'id']
]
return {'argument_spec': argument_spec,
'mutually_exclusive': mutually_exclusive}
# Module Behavior Goodness
def process_request(self):
"""
Process the request - Main Code Path
:return: Returns with either an exit_json or fail_json
"""
p = self.module.params
self._set_clc_credentials_from_env()
self.policy_dict = self._get_alert_policies(p['alias'])
if p['state'] == 'present':
changed, policy = self._ensure_alert_policy_is_present()
else:
changed, policy = self._ensure_alert_policy_is_absent()
self.module.exit_json(changed=changed, policy=policy)
def _set_clc_credentials_from_env(self):
"""
Set the CLC Credentials on the sdk by reading environment variables
:return: none
"""
env = os.environ
v2_api_token = env.get('CLC_V2_API_TOKEN', False)
v2_api_username = env.get('CLC_V2_API_USERNAME', False)
v2_api_passwd = env.get('CLC_V2_API_PASSWD', False)
clc_alias = env.get('CLC_ACCT_ALIAS', False)
api_url = env.get('CLC_V2_API_URL', False)
if api_url:
self.clc.defaults.ENDPOINT_URL_V2 = api_url
if v2_api_token and clc_alias:
self.clc._LOGIN_TOKEN_V2 = v2_api_token
self.clc._V2_ENABLED = True
self.clc.ALIAS = clc_alias
elif v2_api_username and v2_api_passwd:
self.clc.v2.SetCredentials(
api_username=v2_api_username,
api_passwd=v2_api_passwd)
else:
return self.module.fail_json(
msg="You must set the CLC_V2_API_USERNAME and CLC_V2_API_PASSWD "
"environment variables")
def _ensure_alert_policy_is_present(self):
"""
Ensures that the alert policy is present
:return: (changed, policy)
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changed: A flag representing if anything is modified
policy: the created/updated alert policy
"""
changed = False
p = self.module.params
policy_name = p.get('name')
if not policy_name:
self.module.fail_json(msg='Policy name is a required')
policy = self._alert_policy_exists(policy_name)
if not policy:
changed = True
policy = None
if not self.module.check_mode:
policy = self._create_alert_policy()
else:
changed_u, policy = self._ensure_alert_policy_is_updated(policy)
if changed_u:
changed = True
return changed, policy
def _ensure_alert_policy_is_absent(self):
"""
Ensures that the alert policy is absent
:return: (changed, None)
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changed: A flag representing if anything is modified
"""
changed = False
p = self.module.params
alert_policy_id = p.get('id')
alert_policy_name = p.get('name')
alias = p.get('alias')
if not alert_policy_id and not alert_policy_name:
self.module.fail_json(
msg='Either alert policy id or policy name is required')
if not alert_policy_id and alert_policy_name:
alert_policy_id = self._get_alert_policy_id(
self.module,
alert_policy_name)
if alert_policy_id and alert_policy_id in self.policy_dict:
changed = True
if not self.module.check_mode:
self._delete_alert_policy(alias, alert_policy_id)
return changed, None
def _ensure_alert_policy_is_updated(self, alert_policy):
"""
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Ensures the alert policy is updated if anything is changed in the alert policy configuration
:param alert_policy: the target alert policy
:return: (changed, policy)
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changed: A flag representing if anything is modified
policy: the updated the alert policy
"""
changed = False
p = self.module.params
alert_policy_id = alert_policy.get('id')
email_list = p.get('alert_recipients')
metric = p.get('metric')
duration = p.get('duration')
threshold = p.get('threshold')
policy = alert_policy
if (metric and metric != str(alert_policy.get('triggers')[0].get('metric'))) or \
(duration and duration != str(alert_policy.get('triggers')[0].get('duration'))) or \
(threshold and float(threshold) != float(alert_policy.get('triggers')[0].get('threshold'))):
changed = True
elif email_list:
t_email_list = list(
alert_policy.get('actions')[0].get('settings').get('recipients'))
if set(email_list) != set(t_email_list):
changed = True
if changed and not self.module.check_mode:
policy = self._update_alert_policy(alert_policy_id)
return changed, policy
def _get_alert_policies(self, alias):
"""
Get the alert policies for account alias by calling the CLC API.
:param alias: the account alias
:return: the alert policies for the account alias
"""
response = {}
policies = self.clc.v2.API.Call('GET',
'/v2/alertPolicies/%s'
% alias)
for policy in policies.get('items'):
response[policy.get('id')] = policy
return response
def _create_alert_policy(self):
"""
Create an alert Policy using the CLC API.
:return: response dictionary from the CLC API.
"""
p = self.module.params
alias = p['alias']
email_list = p['alert_recipients']
metric = p['metric']
duration = p['duration']
threshold = p['threshold']
policy_name = p['name']
arguments = json.dumps(
{
'name': policy_name,
'actions': [{
'action': 'email',
'settings': {
'recipients': email_list
}
}],
'triggers': [{
'metric': metric,
'duration': duration,
'threshold': threshold
}]
}
)
try:
result = self.clc.v2.API.Call(
'POST',
'/v2/alertPolicies/%s' % alias,
arguments)
except APIFailedResponse as e:
return self.module.fail_json(
msg='Unable to create alert policy "{0}". {1}'.format(
policy_name, str(e.response_text)))
return result
def _update_alert_policy(self, alert_policy_id):
"""
Update alert policy using the CLC API.
:param alert_policy_id: The clc alert policy id
:return: response dictionary from the CLC API.
"""
p = self.module.params
alias = p['alias']
email_list = p['alert_recipients']
metric = p['metric']
duration = p['duration']
threshold = p['threshold']
policy_name = p['name']
arguments = json.dumps(
{
'name': policy_name,
'actions': [{
'action': 'email',
'settings': {
'recipients': email_list
}
}],
'triggers': [{
'metric': metric,
'duration': duration,
'threshold': threshold
}]
}
)
try:
result = self.clc.v2.API.Call(
'PUT', '/v2/alertPolicies/%s/%s' %
(alias, alert_policy_id), arguments)
except APIFailedResponse as e:
return self.module.fail_json(
msg='Unable to update alert policy "{0}". {1}'.format(
policy_name, str(e.response_text)))
return result
def _delete_alert_policy(self, alias, policy_id):
"""
Delete an alert policy using the CLC API.
:param alias : the account alias
:param policy_id: the alert policy id
:return: response dictionary from the CLC API.
"""
try:
result = self.clc.v2.API.Call(
'DELETE', '/v2/alertPolicies/%s/%s' %
(alias, policy_id), None)
except APIFailedResponse as e:
return self.module.fail_json(
msg='Unable to delete alert policy id "{0}". {1}'.format(
policy_id, str(e.response_text)))
return result
def _alert_policy_exists(self, policy_name):
"""
Check to see if an alert policy exists
:param policy_name: name of the alert policy
:return: boolean of if the policy exists
"""
result = False
for policy_id in self.policy_dict:
if self.policy_dict.get(policy_id).get('name') == policy_name:
result = self.policy_dict.get(policy_id)
return result
def _get_alert_policy_id(self, module, alert_policy_name):
"""
retrieves the alert policy id of the account based on the name of the policy
:param module: the AnsibleModule object
:param alert_policy_name: the alert policy name
:return: alert_policy_id: The alert policy id
"""
alert_policy_id = None
for policy_id in self.policy_dict:
if self.policy_dict.get(policy_id).get('name') == alert_policy_name:
if not alert_policy_id:
alert_policy_id = policy_id
else:
return module.fail_json(
msg='multiple alert policies were found with policy name : %s' % alert_policy_name)
return alert_policy_id
@staticmethod
def _set_user_agent(clc):
if hasattr(clc, 'SetRequestsSession'):
agent_string = "ClcAnsibleModule/" + __version__
ses = requests.Session()
ses.headers.update({"Api-Client": agent_string})
ses.headers['User-Agent'] += " " + agent_string
clc.SetRequestsSession(ses)
def main():
"""
The main function. Instantiates the module and calls process_request.
:return: none
"""
argument_dict = ClcAlertPolicy._define_module_argument_spec()
module = AnsibleModule(supports_check_mode=True, **argument_dict)
clc_alert_policy = ClcAlertPolicy(module)
clc_alert_policy.process_request()
from ansible.module_utils.basic import * # pylint: disable=W0614
if __name__ == '__main__':
main()