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authorBradley A. Thornton <bthornto@thethorntons.net>2019-08-08 10:51:33 -0700
committerBradley A. Thornton <bthornto@thethorntons.net>2019-08-08 10:51:33 -0700
commitba99fb9d041f63f5d300956daabefeb0a86edb06 (patch)
treecedee2681cb3b629e4bf3cc56dbd3ec46aeee123 /plugins/modules/vyos_config.py
parent401cd33cbfa3cb623b5f6deb0f24911527d905c2 (diff)
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+#!/usr/bin/python
+#
+# 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/>.
+#
+
+ANSIBLE_METADATA = {'metadata_version': '1.1',
+ 'status': ['preview'],
+ 'supported_by': 'network'}
+
+
+DOCUMENTATION = """
+---
+module: vyos_config
+version_added: "2.2"
+author: "Nathaniel Case (@qalthos)"
+short_description: Manage VyOS configuration on remote device
+description:
+ - This module provides configuration file management of VyOS
+ devices. It provides arguments for managing both the
+ configuration file and state of the active configuration. All
+ configuration statements are based on `set` and `delete` commands
+ in the device configuration.
+extends_documentation_fragment: vyos
+notes:
+ - Tested against VYOS 1.1.7
+ - Abbreviated commands are NOT idempotent, see
+ L(Network FAQ,../network/user_guide/faq.html#why-do-the-config-modules-always-return-changed-true-with-abbreviated-commands).
+options:
+ lines:
+ description:
+ - The ordered set of configuration lines to be managed and
+ compared with the existing configuration on the remote
+ device.
+ src:
+ description:
+ - The C(src) argument specifies the path to the source config
+ file to load. The source config file can either be in
+ bracket format or set format. The source file can include
+ Jinja2 template variables.
+ match:
+ description:
+ - The C(match) argument controls the method used to match
+ against the current active configuration. By default, the
+ desired config is matched against the active config and the
+ deltas are loaded. If the C(match) argument is set to C(none)
+ the active configuration is ignored and the configuration is
+ always loaded.
+ default: line
+ choices: ['line', 'none']
+ backup:
+ description:
+ - The C(backup) argument will backup the current devices active
+ configuration to the Ansible control host prior to making any
+ changes. If the C(backup_options) value is not given, the
+ backup file will be located in the backup folder in the playbook
+ root directory or role root directory, if playbook is part of an
+ ansible role. If the directory does not exist, it is created.
+ type: bool
+ default: 'no'
+ comment:
+ description:
+ - Allows a commit description to be specified to be included
+ when the configuration is committed. If the configuration is
+ not changed or committed, this argument is ignored.
+ default: 'configured by vyos_config'
+ config:
+ description:
+ - The C(config) argument specifies the base configuration to use
+ to compare against the desired configuration. If this value
+ is not specified, the module will automatically retrieve the
+ current active configuration from the remote device.
+ save:
+ description:
+ - The C(save) argument controls whether or not changes made
+ to the active configuration are saved to disk. This is
+ independent of committing the config. When set to True, the
+ active configuration is saved.
+ type: bool
+ default: 'no'
+ backup_options:
+ description:
+ - This is a dict object containing configurable options related to backup file path.
+ The value of this option is read only when C(backup) is set to I(yes), if C(backup) is set
+ to I(no) this option will be silently ignored.
+ suboptions:
+ filename:
+ description:
+ - The filename to be used to store the backup configuration. If the the filename
+ is not given it will be generated based on the hostname, current time and date
+ in format defined by <hostname>_config.<current-date>@<current-time>
+ dir_path:
+ description:
+ - This option provides the path ending with directory name in which the backup
+ configuration file will be stored. If the directory does not exist it will be first
+ created and the filename is either the value of C(filename) or default filename
+ as described in C(filename) options description. If the path value is not given
+ in that case a I(backup) directory will be created in the current working directory
+ and backup configuration will be copied in C(filename) within I(backup) directory.
+ type: path
+ type: dict
+ version_added: "2.8"
+"""
+
+EXAMPLES = """
+- name: configure the remote device
+ vyos_config:
+ lines:
+ - set system host-name {{ inventory_hostname }}
+ - set service lldp
+ - delete service dhcp-server
+
+- name: backup and load from file
+ vyos_config:
+ src: vyos.cfg
+ backup: yes
+
+- name: render a Jinja2 template onto the VyOS router
+ vyos_config:
+ src: vyos_template.j2
+
+- name: for idempotency, use full-form commands
+ vyos_config:
+ lines:
+ # - set int eth eth2 description 'OUTSIDE'
+ - set interface ethernet eth2 description 'OUTSIDE'
+
+- name: configurable backup path
+ vyos_config:
+ backup: yes
+ backup_options:
+ filename: backup.cfg
+ dir_path: /home/user
+"""
+
+RETURN = """
+commands:
+ description: The list of configuration commands sent to the device
+ returned: always
+ type: list
+ sample: ['...', '...']
+filtered:
+ description: The list of configuration commands removed to avoid a load failure
+ returned: always
+ type: list
+ sample: ['...', '...']
+backup_path:
+ description: The full path to the backup file
+ returned: when backup is yes
+ type: str
+ sample: /playbooks/ansible/backup/vyos_config.2016-07-16@22:28:34
+filename:
+ description: The name of the backup file
+ returned: when backup is yes and filename is not specified in backup options
+ type: str
+ sample: vyos_config.2016-07-16@22:28:34
+shortname:
+ description: The full path to the backup file excluding the timestamp
+ returned: when backup is yes and filename is not specified in backup options
+ type: str
+ sample: /playbooks/ansible/backup/vyos_config
+date:
+ description: The date extracted from the backup file name
+ returned: when backup is yes
+ type: str
+ sample: "2016-07-16"
+time:
+ description: The time extracted from the backup file name
+ returned: when backup is yes
+ type: str
+ sample: "22:28:34"
+"""
+import re
+
+from ansible.module_utils._text import to_text
+from ansible.module_utils.basic import AnsibleModule
+from ansible.module_utils.connection import ConnectionError
+from ansible_collections.vyos.vyos.plugins.module_utils.network.vyos.vyos import load_config, get_config, run_commands
+from ansible_collections.vyos.vyos.plugins.module_utils.network.vyos.vyos import vyos_argument_spec, get_connection
+
+
+DEFAULT_COMMENT = 'configured by vyos_config'
+
+CONFIG_FILTERS = [
+ re.compile(r'set system login user \S+ authentication encrypted-password')
+]
+
+
+def get_candidate(module):
+ contents = module.params['src'] or module.params['lines']
+
+ if module.params['src']:
+ contents = format_commands(contents.splitlines())
+
+ contents = '\n'.join(contents)
+ return contents
+
+
+def format_commands(commands):
+ return [line for line in commands if len(line.strip()) > 0]
+
+
+def diff_config(commands, config):
+ config = [str(c).replace("'", '') for c in config.splitlines()]
+
+ updates = list()
+ visited = set()
+
+ for line in commands:
+ item = str(line).replace("'", '')
+
+ if not item.startswith('set') and not item.startswith('delete'):
+ raise ValueError('line must start with either `set` or `delete`')
+
+ elif item.startswith('set') and item not in config:
+ updates.append(line)
+
+ elif item.startswith('delete'):
+ if not config:
+ updates.append(line)
+ else:
+ item = re.sub(r'delete', 'set', item)
+ for entry in config:
+ if entry.startswith(item) and line not in visited:
+ updates.append(line)
+ visited.add(line)
+
+ return list(updates)
+
+
+def sanitize_config(config, result):
+ result['filtered'] = list()
+ index_to_filter = list()
+ for regex in CONFIG_FILTERS:
+ for index, line in enumerate(list(config)):
+ if regex.search(line):
+ result['filtered'].append(line)
+ index_to_filter.append(index)
+ # Delete all filtered configs
+ for filter_index in sorted(index_to_filter, reverse=True):
+ del config[filter_index]
+
+
+def run(module, result):
+ # get the current active config from the node or passed in via
+ # the config param
+ config = module.params['config'] or get_config(module)
+
+ # create the candidate config object from the arguments
+ candidate = get_candidate(module)
+
+ # create loadable config that includes only the configuration updates
+ connection = get_connection(module)
+ try:
+ response = connection.get_diff(candidate=candidate, running=config, diff_match=module.params['match'])
+ except ConnectionError as exc:
+ module.fail_json(msg=to_text(exc, errors='surrogate_then_replace'))
+
+ commands = response.get('config_diff')
+ sanitize_config(commands, result)
+
+ result['commands'] = commands
+
+ commit = not module.check_mode
+ comment = module.params['comment']
+
+ diff = None
+ if commands:
+ diff = load_config(module, commands, commit=commit, comment=comment)
+
+ if result.get('filtered'):
+ result['warnings'].append('Some configuration commands were '
+ 'removed, please see the filtered key')
+
+ result['changed'] = True
+
+ if module._diff:
+ result['diff'] = {'prepared': diff}
+
+
+def main():
+ backup_spec = dict(
+ filename=dict(),
+ dir_path=dict(type='path')
+ )
+ argument_spec = dict(
+ src=dict(type='path'),
+ lines=dict(type='list'),
+
+ match=dict(default='line', choices=['line', 'none']),
+
+ comment=dict(default=DEFAULT_COMMENT),
+
+ config=dict(),
+
+ backup=dict(type='bool', default=False),
+ backup_options=dict(type='dict', options=backup_spec),
+ save=dict(type='bool', default=False),
+ )
+
+ argument_spec.update(vyos_argument_spec)
+
+ mutually_exclusive = [('lines', 'src')]
+
+ module = AnsibleModule(
+ argument_spec=argument_spec,
+ mutually_exclusive=mutually_exclusive,
+ supports_check_mode=True
+ )
+
+ warnings = list()
+
+ result = dict(changed=False, warnings=warnings)
+
+ if module.params['backup']:
+ result['__backup__'] = get_config(module=module)
+
+ if any((module.params['src'], module.params['lines'])):
+ run(module, result)
+
+ if module.params['save']:
+ diff = run_commands(module, commands=['configure', 'compare saved'])[1]
+ if diff != '[edit]':
+ run_commands(module, commands=['save'])
+ result['changed'] = True
+ run_commands(module, commands=['exit'])
+
+ module.exit_json(**result)
+
+
+if __name__ == '__main__':
+ main()