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Merge pull request #779 from CenturylinkTechnology/clc_firewall_policy

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clc_firewall_policy: Module for managing firewall policies in centurylink cloud
reviewable/pr18780/r1
Brian Coca 9 years ago
parent 057a1b8d10 727d2b46fd
commit bd07723449
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cloud/centurylink/clc_firewall_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_firewall_policy
short_description: Create/delete/update firewall policies
description:
- Create or delete or update firewall polices on Centurylink Cloud
version_added: "2.0"
options:
location:
description:
- Target datacenter for the firewall policy
required: True
state:
description:
- Whether to create or delete the firewall policy
default: present
required: False
choices: ['present', 'absent']
source:
description:
- The list of source addresses for traffic on the originating firewall.
This is required when state is 'present"
default: None
required: False
destination:
description:
- The list of destination addresses for traffic on the terminating firewall.
This is required when state is 'present'
default: None
required: False
ports:
description:
- The list of ports associated with the policy.
TCP and UDP can take in single ports or port ranges.
default: None
required: False
choices: ['any', 'icmp', 'TCP/123', 'UDP/123', 'TCP/123-456', 'UDP/123-456']
firewall_policy_id:
description:
- Id of the firewall policy. This is required to update or delete an existing firewall policy
default: None
required: False
source_account_alias:
description:
- CLC alias for the source account
required: True
destination_account_alias:
description:
- CLC alias for the destination account
default: None
required: False
wait:
description:
- Whether to wait for the provisioning tasks to finish before returning.
default: True
required: False
choices: [True, False]
enabled:
description:
- Whether the firewall policy is enabled or disabled
default: True
required: False
choices: [True, False]
requirements:
- python = 2.7
- requests >= 2.5.0
- clc-sdk
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
- 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 = '''
---
- name: Create Firewall Policy
hosts: localhost
gather_facts: False
connection: local
tasks:
- name: Create / Verify an Firewall Policy at CenturyLink Cloud
clc_firewall:
source_account_alias: WFAD
location: VA1
state: present
source: 10.128.216.0/24
destination: 10.128.216.0/24
ports: Any
destination_account_alias: WFAD
---
- name: Delete Firewall Policy
hosts: localhost
gather_facts: False
connection: local
tasks:
- name: Delete an Firewall Policy at CenturyLink Cloud
clc_firewall:
source_account_alias: WFAD
location: VA1
state: absent
firewall_policy_id: 'c62105233d7a4231bd2e91b9c791e43e1'
'''
__version__ = '${version}'
import urlparse
from time import sleep
from distutils.version import LooseVersion
try:
import requests
except ImportError:
REQUESTS_FOUND = False
else:
REQUESTS_FOUND = True
try:
import clc as clc_sdk
from clc import CLCException
from clc import APIFailedResponse
except ImportError:
CLC_FOUND = False
clc_sdk = None
else:
CLC_FOUND = True
class ClcFirewallPolicy:
clc = None
def __init__(self, module):
"""
Construct module
"""
self.clc = clc_sdk
self.module = module
self.firewall_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(
location=dict(required=True),
source_account_alias=dict(required=True, default=None),
destination_account_alias=dict(default=None),
firewall_policy_id=dict(default=None),
ports=dict(default=None, type='list'),
source=dict(defualt=None, type='list'),
destination=dict(defualt=None, type='list'),
wait=dict(default=True),
state=dict(default='present', choices=['present', 'absent']),
enabled=dict(defualt=True, choices=[True, False])
)
return argument_spec
def process_request(self):
"""
Execute the main code path, and handle the request
:return: none
"""
changed = False
firewall_policy = None
location = self.module.params.get('location')
source_account_alias = self.module.params.get('source_account_alias')
destination_account_alias = self.module.params.get(
'destination_account_alias')
firewall_policy_id = self.module.params.get('firewall_policy_id')
ports = self.module.params.get('ports')
source = self.module.params.get('source')
destination = self.module.params.get('destination')
wait = self.module.params.get('wait')
state = self.module.params.get('state')
enabled = self.module.params.get('enabled')
self.firewall_dict = {
'location': location,
'source_account_alias': source_account_alias,
'destination_account_alias': destination_account_alias,
'firewall_policy_id': firewall_policy_id,
'ports': ports,
'source': source,
'destination': destination,
'wait': wait,
'state': state,
'enabled': enabled}
self._set_clc_credentials_from_env()
if state == 'absent':
changed, firewall_policy_id, firewall_policy = self._ensure_firewall_policy_is_absent(
source_account_alias, location, self.firewall_dict)
elif state == 'present':
changed, firewall_policy_id, firewall_policy = self._ensure_firewall_policy_is_present(
source_account_alias, location, self.firewall_dict)
return self.module.exit_json(
changed=changed,
firewall_policy_id=firewall_policy_id,
firewall_policy=firewall_policy)
@staticmethod
def _get_policy_id_from_response(response):
"""
Method to parse out the policy id from creation response
:param response: response from firewall creation API call
:return: policy_id: firewall policy id from creation call
"""
url = response.get('links')[0]['href']
path = urlparse.urlparse(url).path
path_list = os.path.split(path)
policy_id = path_list[-1]
return policy_id
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_firewall_policy_is_present(
self,
source_account_alias,
location,
firewall_dict):
"""
Ensures that a given firewall policy is present
:param source_account_alias: the source account alias for the firewall policy
:param location: datacenter of the firewall policy
:param firewall_dict: dictionary of request parameters for firewall policy
:return: (changed, firewall_policy_id, firewall_policy)
changed: flag for if a change occurred
firewall_policy_id: the firewall policy id that was created/updated
firewall_policy: The firewall_policy object
"""
firewall_policy = None
firewall_policy_id = firewall_dict.get('firewall_policy_id')
if firewall_policy_id is None:
if not self.module.check_mode:
response = self._create_firewall_policy(
source_account_alias,
location,
firewall_dict)
firewall_policy_id = self._get_policy_id_from_response(
response)
changed = True
else:
firewall_policy = self._get_firewall_policy(
source_account_alias, location, firewall_policy_id)
if not firewall_policy:
return self.module.fail_json(
msg='Unable to find the firewall policy id : {0}'.format(
firewall_policy_id))
changed = self._compare_get_request_with_dict(
firewall_policy,
firewall_dict)
if not self.module.check_mode and changed:
self._update_firewall_policy(
source_account_alias,
location,
firewall_policy_id,
firewall_dict)
if changed and firewall_policy_id:
firewall_policy = self._wait_for_requests_to_complete(
source_account_alias,
location,
firewall_policy_id)
return changed, firewall_policy_id, firewall_policy
def _ensure_firewall_policy_is_absent(
self,
source_account_alias,
location,
firewall_dict):
"""
Ensures that a given firewall policy is removed if present
:param source_account_alias: the source account alias for the firewall policy
:param location: datacenter of the firewall policy
:param firewall_dict: firewall policy to delete
:return: (changed, firewall_policy_id, response)
changed: flag for if a change occurred
firewall_policy_id: the firewall policy id that was deleted
response: response from CLC API call
"""
changed = False
response = []
firewall_policy_id = firewall_dict.get('firewall_policy_id')
result = self._get_firewall_policy(
source_account_alias, location, firewall_policy_id)
if result:
if not self.module.check_mode:
response = self._delete_firewall_policy(
source_account_alias,
location,
firewall_policy_id)
changed = True
return changed, firewall_policy_id, response
def _create_firewall_policy(
self,
source_account_alias,
location,
firewall_dict):
"""
Creates the firewall policy for the given account alias
:param source_account_alias: the source account alias for the firewall policy
:param location: datacenter of the firewall policy
:param firewall_dict: dictionary of request parameters for firewall policy
:return: response from CLC API call
"""
payload = {
'destinationAccount': firewall_dict.get('destination_account_alias'),
'source': firewall_dict.get('source'),
'destination': firewall_dict.get('destination'),
'ports': firewall_dict.get('ports')}
try:
response = self.clc.v2.API.Call(
'POST', '/v2-experimental/firewallPolicies/%s/%s' %
(source_account_alias, location), payload)
except APIFailedResponse as e:
return self.module.fail_json(
msg="Unable to create firewall policy. %s" %
str(e.response_text))
return response
def _delete_firewall_policy(
self,
source_account_alias,
location,
firewall_policy_id):
"""
Deletes a given firewall policy for an account alias in a datacenter
:param source_account_alias: the source account alias for the firewall policy
:param location: datacenter of the firewall policy
:param firewall_policy_id: firewall policy id to delete
:return: response: response from CLC API call
"""
try:
response = self.clc.v2.API.Call(
'DELETE', '/v2-experimental/firewallPolicies/%s/%s/%s' %
(source_account_alias, location, firewall_policy_id))
except APIFailedResponse as e:
return self.module.fail_json(
msg="Unable to delete the firewall policy id : {0}. {1}".format(
firewall_policy_id, str(e.response_text)))
return response
def _update_firewall_policy(
self,
source_account_alias,
location,
firewall_policy_id,
firewall_dict):
"""
Updates a firewall policy for a given datacenter and account alias
:param source_account_alias: the source account alias for the firewall policy
:param location: datacenter of the firewall policy
:param firewall_policy_id: firewall policy id to update
:param firewall_dict: dictionary of request parameters for firewall policy
:return: response: response from CLC API call
"""
try:
response = self.clc.v2.API.Call(
'PUT',
'/v2-experimental/firewallPolicies/%s/%s/%s' %
(source_account_alias,
location,
firewall_policy_id),
firewall_dict)
except APIFailedResponse as e:
return self.module.fail_json(
msg="Unable to update the firewall policy id : {0}. {1}".format(
firewall_policy_id, str(e.response_text)))
return response
@staticmethod
def _compare_get_request_with_dict(response, firewall_dict):
"""
Helper method to compare the json response for getting the firewall policy with the request parameters
:param response: response from the get method
:param firewall_dict: dictionary of request parameters for firewall policy
:return: changed: Boolean that returns true if there are differences between
the response parameters and the playbook parameters
"""
changed = False
response_dest_account_alias = response.get('destinationAccount')
response_enabled = response.get('enabled')
response_source = response.get('source')
response_dest = response.get('destination')
response_ports = response.get('ports')
request_dest_account_alias = firewall_dict.get(
'destination_account_alias')
request_enabled = firewall_dict.get('enabled')
if request_enabled is None:
request_enabled = True
request_source = firewall_dict.get('source')
request_dest = firewall_dict.get('destination')
request_ports = firewall_dict.get('ports')
if (
response_dest_account_alias and str(response_dest_account_alias) != str(request_dest_account_alias)) or (
response_enabled != request_enabled) or (
response_source and response_source != request_source) or (
response_dest and response_dest != request_dest) or (
response_ports and response_ports != request_ports):
changed = True
return changed
def _get_firewall_policy(
self,
source_account_alias,
location,
firewall_policy_id):
"""
Get back details for a particular firewall policy
:param source_account_alias: the source account alias for the firewall policy
:param location: datacenter of the firewall policy
:param firewall_policy_id: id of the firewall policy to get
:return: response - The response from CLC API call
"""
response = None
try:
response = self.clc.v2.API.Call(
'GET', '/v2-experimental/firewallPolicies/%s/%s/%s' %
(source_account_alias, location, firewall_policy_id))
except APIFailedResponse as e:
if e.response_status_code != 404:
self.module.fail_json(
msg="Unable to fetch the firewall policy with id : {0}. {1}".format(
firewall_policy_id, str(e.response_text)))
return response
def _wait_for_requests_to_complete(
self,
source_account_alias,
location,
firewall_policy_id,
wait_limit=50):
"""
Waits until the CLC requests are complete if the wait argument is True
:param source_account_alias: The source account alias for the firewall policy
:param location: datacenter of the firewall policy
:param firewall_policy_id: The firewall policy id
:param wait_limit: The number of times to check the status for completion
:return: the firewall_policy object
"""
wait = self.module.params.get('wait')
count = 0
firewall_policy = None
while wait:
count += 1
firewall_policy = self._get_firewall_policy(
source_account_alias, location, firewall_policy_id)
status = firewall_policy.get('status')
if status == 'active' or count > wait_limit:
wait = False
else:
# wait for 2 seconds
sleep(2)
return firewall_policy
@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
"""
module = AnsibleModule(
argument_spec=ClcFirewallPolicy._define_module_argument_spec(),
supports_check_mode=True)
clc_firewall = ClcFirewallPolicy(module)
clc_firewall.process_request()
from ansible.module_utils.basic import * # pylint: disable=W0614
if __name__ == '__main__':
main()
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