Module for managing firewall policies in centurylink cloud
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Siva Popuri
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cloud/centurylink/clc_firewall_policy.py
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cloud/centurylink/clc_firewall_policy.py
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#!/usr/bin/python
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#
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# Copyright (c) 2015 CenturyLink
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#
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# This file is part of Ansible.
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#
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# Ansible is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Ansible is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Ansible. If not, see <http://www.gnu.org/licenses/>
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#
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DOCUMENTATION = '''
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module: clc_firewall_policy
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short_description: Create/delete/update firewall policies
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description:
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- Create or delete or update firewall polices on Centurylink Cloud
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version_added: "2.0"
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options:
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location:
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description:
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- Target datacenter for the firewall policy
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required: True
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state:
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description:
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- Whether to create or delete the firewall policy
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default: present
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required: False
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choices: ['present', 'absent']
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source:
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description:
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- The list of source addresses for traffic on the originating firewall.
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This is required when state is 'present"
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default: None
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required: False
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destination:
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description:
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- The list of destination addresses for traffic on the terminating firewall.
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This is required when state is 'present'
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default: None
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required: False
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ports:
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description:
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- The list of ports associated with the policy.
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TCP and UDP can take in single ports or port ranges.
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default: None
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required: False
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choices: ['any', 'icmp', 'TCP/123', 'UDP/123', 'TCP/123-456', 'UDP/123-456']
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firewall_policy_id:
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description:
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- Id of the firewall policy. This is required to update or delete an existing firewall policy
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default: None
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required: False
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source_account_alias:
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description:
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- CLC alias for the source account
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required: True
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destination_account_alias:
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description:
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- CLC alias for the destination account
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default: None
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required: False
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wait:
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description:
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- Whether to wait for the provisioning tasks to finish before returning.
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default: True
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required: False
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choices: [True, False]
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enabled:
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description:
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- Whether the firewall policy is enabled or disabled
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default: True
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required: False
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choices: [True, False]
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requirements:
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- python = 2.7
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- requests >= 2.5.0
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- clc-sdk
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notes:
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- To use this module, it is required to set the below environment variables which enables access to the
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Centurylink Cloud
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- 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
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- Alternatively, the module accepts the API token and account alias. The API token can be generated using the
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CLC account login and password via the HTTP api call @ https://api.ctl.io/v2/authentication/login
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- CLC_V2_API_TOKEN, the API token generated from https://api.ctl.io/v2/authentication/login
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- CLC_ACCT_ALIAS, the account alias associated with the centurylink cloud
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- Users can set CLC_V2_API_URL to specify an endpoint for pointing to a different CLC environment.
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'''
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EXAMPLES = '''
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---
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- name: Create Firewall Policy
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hosts: localhost
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gather_facts: False
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connection: local
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tasks:
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- name: Create / Verify an Firewall Policy at CenturyLink Cloud
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clc_firewall:
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source_account_alias: WFAD
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location: VA1
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state: present
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source: 10.128.216.0/24
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destination: 10.128.216.0/24
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ports: Any
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destination_account_alias: WFAD
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---
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- name: Delete Firewall Policy
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hosts: localhost
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gather_facts: False
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connection: local
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tasks:
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- name: Delete an Firewall Policy at CenturyLink Cloud
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clc_firewall:
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source_account_alias: WFAD
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location: VA1
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state: absent
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firewall_policy_id: 'c62105233d7a4231bd2e91b9c791e43e1'
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'''
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__version__ = '${version}'
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import urlparse
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from time import sleep
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from distutils.version import LooseVersion
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try:
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import requests
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except ImportError:
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REQUESTS_FOUND = False
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else:
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REQUESTS_FOUND = True
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try:
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import clc as clc_sdk
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from clc import CLCException
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from clc import APIFailedResponse
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except ImportError:
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CLC_FOUND = False
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clc_sdk = None
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else:
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CLC_FOUND = True
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class ClcFirewallPolicy:
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clc = None
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def __init__(self, module):
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"""
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Construct module
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"""
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self.clc = clc_sdk
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self.module = module
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self.firewall_dict = {}
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if not CLC_FOUND:
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self.module.fail_json(
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msg='clc-python-sdk required for this module')
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if not REQUESTS_FOUND:
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self.module.fail_json(
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msg='requests library is required for this module')
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if requests.__version__ and LooseVersion(
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requests.__version__) < LooseVersion('2.5.0'):
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self.module.fail_json(
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msg='requests library version should be >= 2.5.0')
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self._set_user_agent(self.clc)
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@staticmethod
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def _define_module_argument_spec():
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"""
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Define the argument spec for the ansible module
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:return: argument spec dictionary
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"""
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argument_spec = dict(
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location=dict(required=True),
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source_account_alias=dict(required=True, default=None),
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destination_account_alias=dict(default=None),
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firewall_policy_id=dict(default=None),
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ports=dict(default=None, type='list'),
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source=dict(defualt=None, type='list'),
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destination=dict(defualt=None, type='list'),
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wait=dict(default=True),
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state=dict(default='present', choices=['present', 'absent']),
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enabled=dict(defualt=True, choices=[True, False])
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)
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return argument_spec
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def process_request(self):
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"""
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Execute the main code path, and handle the request
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:return: none
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"""
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changed = False
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firewall_policy = None
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location = self.module.params.get('location')
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source_account_alias = self.module.params.get('source_account_alias')
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destination_account_alias = self.module.params.get(
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'destination_account_alias')
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firewall_policy_id = self.module.params.get('firewall_policy_id')
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ports = self.module.params.get('ports')
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source = self.module.params.get('source')
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destination = self.module.params.get('destination')
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wait = self.module.params.get('wait')
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state = self.module.params.get('state')
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enabled = self.module.params.get('enabled')
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self.firewall_dict = {
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'location': location,
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'source_account_alias': source_account_alias,
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'destination_account_alias': destination_account_alias,
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'firewall_policy_id': firewall_policy_id,
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'ports': ports,
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'source': source,
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'destination': destination,
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'wait': wait,
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'state': state,
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'enabled': enabled}
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self._set_clc_credentials_from_env()
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if state == 'absent':
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changed, firewall_policy_id, firewall_policy = self._ensure_firewall_policy_is_absent(
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source_account_alias, location, self.firewall_dict)
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elif state == 'present':
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changed, firewall_policy_id, firewall_policy = self._ensure_firewall_policy_is_present(
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source_account_alias, location, self.firewall_dict)
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return self.module.exit_json(
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changed=changed,
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firewall_policy_id=firewall_policy_id,
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firewall_policy=firewall_policy)
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@staticmethod
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def _get_policy_id_from_response(response):
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"""
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Method to parse out the policy id from creation response
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:param response: response from firewall creation API call
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:return: policy_id: firewall policy id from creation call
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"""
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url = response.get('links')[0]['href']
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path = urlparse.urlparse(url).path
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path_list = os.path.split(path)
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policy_id = path_list[-1]
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return policy_id
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def _set_clc_credentials_from_env(self):
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"""
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Set the CLC Credentials on the sdk by reading environment variables
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:return: none
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"""
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env = os.environ
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v2_api_token = env.get('CLC_V2_API_TOKEN', False)
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v2_api_username = env.get('CLC_V2_API_USERNAME', False)
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v2_api_passwd = env.get('CLC_V2_API_PASSWD', False)
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clc_alias = env.get('CLC_ACCT_ALIAS', False)
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api_url = env.get('CLC_V2_API_URL', False)
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if api_url:
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self.clc.defaults.ENDPOINT_URL_V2 = api_url
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if v2_api_token and clc_alias:
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self.clc._LOGIN_TOKEN_V2 = v2_api_token
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self.clc._V2_ENABLED = True
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self.clc.ALIAS = clc_alias
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elif v2_api_username and v2_api_passwd:
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self.clc.v2.SetCredentials(
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api_username=v2_api_username,
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api_passwd=v2_api_passwd)
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else:
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return self.module.fail_json(
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msg="You must set the CLC_V2_API_USERNAME and CLC_V2_API_PASSWD "
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"environment variables")
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def _ensure_firewall_policy_is_present(
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self,
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source_account_alias,
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location,
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firewall_dict):
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"""
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Ensures that a given firewall policy is present
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:param source_account_alias: the source account alias for the firewall policy
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:param location: datacenter of the firewall policy
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:param firewall_dict: dictionary of request parameters for firewall policy
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:return: (changed, firewall_policy_id, firewall_policy)
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changed: flag for if a change occurred
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firewall_policy_id: the firewall policy id that was created/updated
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firewall_policy: The firewall_policy object
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"""
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firewall_policy = None
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firewall_policy_id = firewall_dict.get('firewall_policy_id')
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if firewall_policy_id is None:
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if not self.module.check_mode:
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response = self._create_firewall_policy(
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source_account_alias,
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location,
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firewall_dict)
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firewall_policy_id = self._get_policy_id_from_response(
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response)
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changed = True
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else:
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firewall_policy = self._get_firewall_policy(
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source_account_alias, location, firewall_policy_id)
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if not firewall_policy:
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return self.module.fail_json(
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msg='Unable to find the firewall policy id : {0}'.format(
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firewall_policy_id))
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changed = self._compare_get_request_with_dict(
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firewall_policy,
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firewall_dict)
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if not self.module.check_mode and changed:
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self._update_firewall_policy(
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source_account_alias,
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location,
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firewall_policy_id,
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firewall_dict)
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if changed and firewall_policy_id:
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firewall_policy = self._wait_for_requests_to_complete(
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source_account_alias,
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location,
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firewall_policy_id)
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return changed, firewall_policy_id, firewall_policy
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def _ensure_firewall_policy_is_absent(
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self,
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source_account_alias,
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location,
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firewall_dict):
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"""
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Ensures that a given firewall policy is removed if present
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:param source_account_alias: the source account alias for the firewall policy
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:param location: datacenter of the firewall policy
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:param firewall_dict: firewall policy to delete
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:return: (changed, firewall_policy_id, response)
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changed: flag for if a change occurred
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firewall_policy_id: the firewall policy id that was deleted
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response: response from CLC API call
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"""
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changed = False
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response = []
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firewall_policy_id = firewall_dict.get('firewall_policy_id')
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result = self._get_firewall_policy(
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source_account_alias, location, firewall_policy_id)
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if result:
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if not self.module.check_mode:
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response = self._delete_firewall_policy(
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source_account_alias,
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location,
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firewall_policy_id)
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changed = True
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return changed, firewall_policy_id, response
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def _create_firewall_policy(
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self,
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source_account_alias,
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location,
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firewall_dict):
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"""
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Creates the firewall policy for the given account alias
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:param source_account_alias: the source account alias for the firewall policy
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:param location: datacenter of the firewall policy
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:param firewall_dict: dictionary of request parameters for firewall policy
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:return: response from CLC API call
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"""
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payload = {
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'destinationAccount': firewall_dict.get('destination_account_alias'),
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'source': firewall_dict.get('source'),
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'destination': firewall_dict.get('destination'),
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'ports': firewall_dict.get('ports')}
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try:
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response = self.clc.v2.API.Call(
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'POST', '/v2-experimental/firewallPolicies/%s/%s' %
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(source_account_alias, location), payload)
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except APIFailedResponse as e:
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return self.module.fail_json(
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msg="Unable to create firewall policy. %s" %
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str(e.response_text))
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return response
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def _delete_firewall_policy(
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self,
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source_account_alias,
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location,
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firewall_policy_id):
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"""
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Deletes a given firewall policy for an account alias in a datacenter
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:param source_account_alias: the source account alias for the firewall policy
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:param location: datacenter of the firewall policy
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:param firewall_policy_id: firewall policy id to delete
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:return: response: response from CLC API call
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"""
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try:
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response = self.clc.v2.API.Call(
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'DELETE', '/v2-experimental/firewallPolicies/%s/%s/%s' %
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(source_account_alias, location, firewall_policy_id))
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except APIFailedResponse as e:
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return self.module.fail_json(
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msg="Unable to delete the firewall policy id : {0}. {1}".format(
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firewall_policy_id, str(e.response_text)))
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return response
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def _update_firewall_policy(
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self,
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source_account_alias,
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location,
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firewall_policy_id,
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firewall_dict):
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"""
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Updates a firewall policy for a given datacenter and account alias
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:param source_account_alias: the source account alias for the firewall policy
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:param location: datacenter of the firewall policy
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:param firewall_policy_id: firewall policy id to update
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:param firewall_dict: dictionary of request parameters for firewall policy
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:return: response: response from CLC API call
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"""
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try:
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response = self.clc.v2.API.Call(
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'PUT',
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'/v2-experimental/firewallPolicies/%s/%s/%s' %
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(source_account_alias,
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location,
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firewall_policy_id),
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firewall_dict)
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except APIFailedResponse as e:
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return self.module.fail_json(
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msg="Unable to update the firewall policy id : {0}. {1}".format(
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firewall_policy_id, str(e.response_text)))
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return response
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@staticmethod
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def _compare_get_request_with_dict(response, firewall_dict):
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"""
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Helper method to compare the json response for getting the firewall policy with the request parameters
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:param response: response from the get method
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:param firewall_dict: dictionary of request parameters for firewall policy
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:return: changed: Boolean that returns true if there are differences between
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the response parameters and the playbook parameters
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"""
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||||
changed = False
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||||
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response_dest_account_alias = response.get('destinationAccount')
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response_enabled = response.get('enabled')
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response_source = response.get('source')
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response_dest = response.get('destination')
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response_ports = response.get('ports')
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request_dest_account_alias = firewall_dict.get(
|
||||
'destination_account_alias')
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request_enabled = firewall_dict.get('enabled')
|
||||
if request_enabled is None:
|
||||
request_enabled = True
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request_source = firewall_dict.get('source')
|
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request_dest = firewall_dict.get('destination')
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request_ports = firewall_dict.get('ports')
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if (
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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):
|
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changed = True
|
||||
return changed
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||||
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def _get_firewall_policy(
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||||
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()
|
||||
Loading…
Reference in a new issue