578 lines
19 KiB
Python
578 lines
19 KiB
Python
#!/usr/bin/python
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# -*- coding: utf-8 -*-
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#
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# Copyright: (c) 2017, F5 Networks Inc.
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# GNU General Public License v3.0 (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
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from __future__ import absolute_import, division, print_function
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__metaclass__ = type
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ANSIBLE_METADATA = {'metadata_version': '1.1',
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'status': ['stableinterface'],
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'supported_by': 'certified'}
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DOCUMENTATION = r'''
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---
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module: bigip_iapp_template
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short_description: Manages TCL iApp templates on a BIG-IP
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description:
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- Manages TCL iApp templates on a BIG-IP. This module will allow you to
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deploy iApp templates to the BIG-IP and manage their lifecycle. The
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conventional way to use this module is to import new iApps as needed
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or by extracting the contents of the iApp archive that is provided at
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downloads.f5.com and then importing all the iApps with this module.
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This module can also update existing iApps provided that the source
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of the iApp changed while the name stayed the same. Note however that
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this module will not reconfigure any services that may have been
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created using the C(bigip_iapp_service) module. iApps are normally
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not updated in production. Instead, new versions are deployed and then
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existing services are changed to consume that new template. As such,
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the ability to update templates in-place requires the C(force) option
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to be used.
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version_added: 2.4
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options:
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force:
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description:
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- Specifies whether or not to force the uploading of an iApp. When
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C(yes), will force update the iApp even if there are iApp services
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using it. This will not update the running service though. Use
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C(bigip_iapp_service) to do that. When C(no), will update the iApp
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only if there are no iApp services using the template.
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type: bool
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name:
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description:
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- The name of the iApp template that you want to delete. This option
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is only available when specifying a C(state) of C(absent) and is
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provided as a way to delete templates that you may no longer have
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the source of.
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content:
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description:
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- Sets the contents of an iApp template directly to the specified
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value. This is for simple values, but can be used with lookup
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plugins for anything complex or with formatting. C(content) must
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be provided when creating new templates.
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state:
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description:
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- Whether the iApp template should exist or not.
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default: present
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choices:
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- present
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- absent
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partition:
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description:
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- Device partition to manage resources on.
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default: Common
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extends_documentation_fragment: f5
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author:
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- Tim Rupp (@caphrim007)
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- Wojciech Wypior (@wojtek0806)
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'''
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EXAMPLES = r'''
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- name: Add the iApp contained in template iapp.tmpl
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bigip_iapp_template:
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content: "{{ lookup('template', 'iapp.tmpl') }}"
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state: present
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provider:
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user: admin
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password: secret
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server: lb.mydomain.com
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delegate_to: localhost
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- name: Update a template in place
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bigip_iapp_template:
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content: "{{ lookup('template', 'iapp-new.tmpl') }}"
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state: present
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provider:
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user: admin
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password: secret
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server: lb.mydomain.com
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delegate_to: localhost
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- name: Update a template in place that has existing services created from it.
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bigip_iapp_template:
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content: "{{ lookup('template', 'iapp-new.tmpl') }}"
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force: yes
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state: present
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provider:
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user: admin
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password: secret
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server: lb.mydomain.com
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delegate_to: localhost
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'''
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RETURN = r'''
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# only common fields returned
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'''
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import re
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import uuid
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from ansible.module_utils.basic import AnsibleModule
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from ansible.module_utils.basic import env_fallback
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try:
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from library.module_utils.network.f5.bigip import F5RestClient
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from library.module_utils.network.f5.common import F5ModuleError
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from library.module_utils.network.f5.common import AnsibleF5Parameters
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from library.module_utils.network.f5.common import cleanup_tokens
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from library.module_utils.network.f5.common import fq_name
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from library.module_utils.network.f5.common import f5_argument_spec
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from library.module_utils.network.f5.common import exit_json
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from library.module_utils.network.f5.common import fail_json
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from library.module_utils.network.f5.common import transform_name
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from library.module_utils.network.f5.icontrol import upload_file
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except ImportError:
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from ansible.module_utils.network.f5.bigip import F5RestClient
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from ansible.module_utils.network.f5.common import F5ModuleError
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from ansible.module_utils.network.f5.common import AnsibleF5Parameters
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from ansible.module_utils.network.f5.common import cleanup_tokens
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from ansible.module_utils.network.f5.common import fq_name
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from ansible.module_utils.network.f5.common import f5_argument_spec
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from ansible.module_utils.network.f5.common import exit_json
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from ansible.module_utils.network.f5.common import fail_json
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from ansible.module_utils.network.f5.common import transform_name
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from ansible.module_utils.network.f5.icontrol import upload_file
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try:
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from StringIO import StringIO
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except ImportError:
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from io import StringIO
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class Parameters(AnsibleF5Parameters):
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api_attributes = []
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returnables = []
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@property
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def name(self):
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if self._values['name']:
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return self._values['name']
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if self._values['content']:
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name = self._get_template_name()
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return name
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return None
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@property
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def content(self):
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if self._values['content'] is None:
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return None
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result = self._squash_template_name_prefix()
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result = self._replace_template_name(result)
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return result
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@property
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def checksum(self):
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return self._values['tmplChecksum']
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def _squash_template_name_prefix(self):
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"""Removes the template name prefix
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This method removes that partition from the name
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in the iApp so that comparisons can be done properly and entries
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can be created properly when using REST.
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:return string
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"""
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pattern = r'sys\s+application\s+template\s+/Common/'
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replace = 'sys application template '
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return re.sub(pattern, replace, self._values['content'])
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def _replace_template_name(self, template):
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"""Replaces template name at runtime
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To allow us to do the switch-a-roo with temporary templates and
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checksum comparisons, we need to take the template provided to us
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and change its name to a temporary value so that BIG-IP will create
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a clone for us.
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:return string
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"""
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pattern = r'sys\s+application\s+template\s+[^ ]+'
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if self._values['name']:
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name = self._values['name']
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else:
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name = self._get_template_name()
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replace = 'sys application template {0}'.format(fq_name(self.partition, name))
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return re.sub(pattern, replace, template)
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def _get_template_name(self):
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pattern = r'sys\s+application\s+template\s+(?P<path>\/[^\{}"\'*?|#]+\/)?(?P<name>[^\{}"\'*?|#]+)'
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matches = re.search(pattern, self._values['content'])
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try:
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result = matches.group('name').strip()
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except IndexError:
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result = None
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if result:
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return result
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raise F5ModuleError(
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"No template name was found in the template"
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)
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class ApiParameters(Parameters):
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pass
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class ModuleParameters(Parameters):
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pass
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class Changes(Parameters):
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def to_return(self):
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result = {}
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try:
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for returnable in self.returnables:
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result[returnable] = getattr(self, returnable)
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result = self._filter_params(result)
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except Exception:
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pass
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return result
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class UsableChanges(Changes):
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pass
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class ReportableChanges(Changes):
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pass
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class ModuleManager(object):
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def __init__(self, *args, **kwargs):
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self.module = kwargs.get('module', None)
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self.client = kwargs.get('client', None)
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self.want = ModuleParameters(params=self.module.params)
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self.have = ApiParameters()
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self.changes = UsableChanges()
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def _announce_deprecations(self, result):
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warnings = result.pop('__warnings', [])
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for warning in warnings:
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self.client.module.deprecate(
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msg=warning['msg'],
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version=warning['version']
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)
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def exec_module(self):
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changed = False
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result = dict()
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state = self.want.state
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if state == "present":
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changed = self.present()
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elif state == "absent":
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changed = self.absent()
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reportable = ReportableChanges(params=self.changes.to_return())
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changes = reportable.to_return()
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result.update(**changes)
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result.update(dict(changed=changed))
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self._announce_deprecations(result)
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return result
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def present(self):
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if self.exists():
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return self.update()
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else:
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return self.create()
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def absent(self):
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changed = False
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if self.exists():
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changed = self.remove()
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return changed
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def create(self):
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if self.module.check_mode:
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return True
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self.create_on_device()
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if self.exists():
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return True
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else:
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raise F5ModuleError("Failed to create the iApp template")
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def remove(self):
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if self.module.check_mode:
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return True
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self.remove_from_device()
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if self.exists():
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raise F5ModuleError("Failed to delete the iApp template")
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return True
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def update(self):
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self.have = self.read_current_from_device()
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if not self.templates_differ():
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return False
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if not self.want.force and self.template_in_use():
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return False
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if self.module.check_mode:
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return True
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self._remove_iapp_checksum()
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# The same process used for creating (load) can be used for updating
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self.create_on_device()
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self._generate_template_checksum_on_device()
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return True
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def exists(self):
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uri = "https://{0}:{1}/mgmt/tm/sys/application/template/{2}".format(
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self.client.provider['server'],
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self.client.provider['server_port'],
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transform_name(self.want.partition, self.want.name)
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)
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resp = self.client.api.get(uri)
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try:
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response = resp.json()
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except ValueError:
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return False
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if resp.status == 404 or 'code' in response and response['code'] == 404:
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return False
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return True
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def template_in_use(self):
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uri = "https://{0}:{1}/mgmt/tm/sys/application/service/".format(
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self.client.provider['server'],
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self.client.provider['server_port'],
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)
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name = fq_name(self.want.partition, self.want.name)
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resp = self.client.api.get(uri)
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try:
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response = resp.json()
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except ValueError:
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return False
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if resp.status == 404 or 'code' in response and response['code'] == 404:
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return False
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for item in response['items']:
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if item['template'] == name:
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return True
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return False
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def read_current_from_device(self):
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self._generate_template_checksum_on_device()
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uri = "https://{0}:{1}/mgmt/tm/sys/application/template/{2}".format(
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self.client.provider['server'],
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self.client.provider['server_port'],
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transform_name(self.want.partition, self.want.name)
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)
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resp = self.client.api.get(uri)
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try:
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response = resp.json()
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except ValueError as ex:
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raise F5ModuleError(str(ex))
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if 'code' in response and response['code'] == 400:
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if 'message' in response:
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raise F5ModuleError(response['message'])
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else:
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raise F5ModuleError(resp.content)
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return ApiParameters(params=response)
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def _remove_iapp_checksum(self):
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"""Removes the iApp tmplChecksum
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This is required for updating in place or else the load command will
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fail with a "AppTemplate ... content does not match the checksum"
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error.
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:return:
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"""
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uri = "https://{0}:{1}/mgmt/tm/sys/application/template/{2}".format(
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self.client.provider['server'],
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self.client.provider['server_port'],
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transform_name(self.want.partition, self.want.name)
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)
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params = dict(tmplChecksum=None)
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resp = self.client.api.patch(uri, json=params)
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try:
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response = resp.json()
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except ValueError as ex:
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raise F5ModuleError(str(ex))
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if 'code' in response and response['code'] == 400:
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if 'message' in response:
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raise F5ModuleError(response['message'])
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else:
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raise F5ModuleError(resp.content)
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def templates_differ(self):
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# BIG-IP can generate checksums of iApps, but the iApp needs to be
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# on the box to do this. Additionally, the checksum is MD5, but it
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# is not an MD5 of the entire content of the template. Instead, it
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# is a hash of some portion of the template that is unknown to me.
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#
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# The code below is responsible for uploading the provided template
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# under a unique name and creating a checksum for it so that that
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# checksum can be compared to the one of the existing template.
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#
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# Using this method we can compare the checksums of the existing
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# iApp and the iApp that the user is providing to the module.
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backup = self.want.name
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# Override whatever name may have been provided so that we can
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# temporarily create a new template to test checksums with
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self.want.update({
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'name': 'ansible-{0}'.format(str(uuid.uuid4()))
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})
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# Create and remove temporary template
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temp = self._get_temporary_template()
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# Set the template name back to what it was originally so that
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# any future operations only happen on the real template.
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self.want.update({
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'name': backup
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})
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if temp.checksum != self.have.checksum:
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return True
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return False
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def _get_temporary_template(self):
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self.create_on_device()
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temp = self.read_current_from_device()
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self.remove_from_device()
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return temp
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def _generate_template_checksum_on_device(self):
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command = 'tmsh generate sys application template {0} checksum'.format(
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self.want.name
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)
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params = dict(
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command="run",
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utilCmdArgs='-c "{0}"'.format(command)
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)
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uri = "https://{0}:{1}/mgmt/tm/util/bash".format(
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self.client.provider['server'],
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self.client.provider['server_port']
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)
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resp = self.client.api.post(uri, json=params)
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try:
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response = resp.json()
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except ValueError as ex:
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raise F5ModuleError(str(ex))
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if 'code' in response and response['code'] in [400, 403]:
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if 'message' in response:
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raise F5ModuleError(response['message'])
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else:
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raise F5ModuleError(resp.content)
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def upload_file_to_device(self, content, name):
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url = 'https://{0}:{1}/mgmt/shared/file-transfer/uploads'.format(
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self.client.provider['server'],
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self.client.provider['server_port']
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)
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try:
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upload_file(self.client, url, content, name)
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except F5ModuleError:
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raise F5ModuleError(
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"Failed to upload the file."
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)
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def create_on_device(self):
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remote_path = "/var/config/rest/downloads/{0}".format(self.want.name)
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load_command = 'tmsh load sys application template {0}'.format(remote_path)
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template = StringIO(self.want.content)
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self.upload_file_to_device(template, self.want.name)
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uri = "https://{0}:{1}/mgmt/tm/util/bash".format(
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self.client.provider['server'],
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self.client.provider['server_port']
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)
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params = dict(
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command="run",
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utilCmdArgs='-c "{0}"'.format(load_command)
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)
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resp = self.client.api.post(uri, json=params)
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try:
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response = resp.json()
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if 'commandResult' in response:
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if 'Syntax Error' in response['commandResult']:
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raise F5ModuleError(response['commandResult'])
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if 'ERROR' in response['commandResult']:
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raise F5ModuleError(response['commandResult'])
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except ValueError as ex:
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raise F5ModuleError(str(ex))
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if 'code' in response and response['code'] in [400, 403]:
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if 'message' in response:
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raise F5ModuleError(response['message'])
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else:
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raise F5ModuleError(resp.content)
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return True
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def remove_from_device(self):
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uri = "https://{0}:{1}/mgmt/tm/sys/application/template/{2}".format(
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self.client.provider['server'],
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self.client.provider['server_port'],
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transform_name(self.want.partition, self.want.name)
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)
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response = self.client.api.delete(uri)
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if response.status == 200:
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return True
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raise F5ModuleError(response.content)
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class ArgumentSpec(object):
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def __init__(self):
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self.supports_check_mode = True
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argument_spec = dict(
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name=dict(),
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state=dict(
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default='present',
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choices=['present', 'absent']
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),
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|
force=dict(
|
|
type='bool'
|
|
),
|
|
content=dict(),
|
|
partition=dict(
|
|
default='Common',
|
|
fallback=(env_fallback, ['F5_PARTITION'])
|
|
)
|
|
)
|
|
self.argument_spec = {}
|
|
self.argument_spec.update(f5_argument_spec)
|
|
self.argument_spec.update(argument_spec)
|
|
|
|
|
|
def main():
|
|
spec = ArgumentSpec()
|
|
|
|
module = AnsibleModule(
|
|
argument_spec=spec.argument_spec,
|
|
supports_check_mode=spec.supports_check_mode
|
|
)
|
|
|
|
client = F5RestClient(**module.params)
|
|
|
|
try:
|
|
mm = ModuleManager(module=module, client=client)
|
|
results = mm.exec_module()
|
|
cleanup_tokens(client)
|
|
exit_json(module, results, client)
|
|
except F5ModuleError as ex:
|
|
cleanup_tokens(client)
|
|
fail_json(module, ex, client)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
main()
|