Adding nxos_vtp_domain

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GGabriele 2016-09-15 13:17:20 +02:00 committed by Matt Clay
parent b1f33ca5a0
commit bf2e0ec953

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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/>.
#
DOCUMENTATION = '''
---
module: nxos_vtp
short_description: Manages VTP domain configuration.
description:
- Manages VTP domain configuration.
extends_documentation_fragment: nxos
author:
- Gabriele Gerbino (@GGabriele)
notes:
- VTP feature must be active on the device to use this module.
- This module is used to manage only VTP domain names.
- VTP domain names are case-sensible.
- If it's never been configured before, VTP version is setted to 1 by default.
Otherwise, it leaves the previous configured version untouched.
Use M(nxos_vtp_version) to change it.
- Use this in combination with M(nxos_vtp_password) and M(nxos_vtp_version)
to fully manage VTP operations.
options:
domain:
description:
- VTP domain name.
required: true
'''
EXAMPLES = '''
# ENSURE VTP DOMAIN IS CONFIGURED
- nxos_vtp_domain:
domain=ntc
host={{ inventory_hostname }}
username={{ un }}
password={{ pwd }}
'''
RETURN = '''
proposed:
description: k/v pairs of parameters passed into module
returned: always
type: dict
sample: {"domain": "ntc"}
existing:
description:
- k/v pairs of existing vtp domain
type: dict
sample: {"domain": "testing", "version": "2", "vtp_password": "\"}
end_state:
description: k/v pairs of vtp domain after module execution
returned: always
type: dict
sample: {"domain": "ntc", "version": "2", "vtp_password": "\"}
updates:
description: command sent to the device
returned: always
type: list
sample: ["vtp domain ntc"]
changed:
description: check to see if a change was made on the device
returned: always
type: boolean
sample: true
'''
import json
# COMMON CODE FOR MIGRATION
import re
from ansible.module_utils.basic import get_exception
from ansible.module_utils.netcfg import NetworkConfig, ConfigLine
from ansible.module_utils.shell import ShellError
try:
from ansible.module_utils.nxos import get_module
except ImportError:
from ansible.module_utils.nxos import NetworkModule
def to_list(val):
if isinstance(val, (list, tuple)):
return list(val)
elif val is not None:
return [val]
else:
return list()
class CustomNetworkConfig(NetworkConfig):
def expand_section(self, configobj, S=None):
if S is None:
S = list()
S.append(configobj)
for child in configobj.children:
if child in S:
continue
self.expand_section(child, S)
return S
def get_object(self, path):
for item in self.items:
if item.text == path[-1]:
parents = [p.text for p in item.parents]
if parents == path[:-1]:
return item
def to_block(self, section):
return '\n'.join([item.raw for item in section])
def get_section(self, path):
try:
section = self.get_section_objects(path)
return self.to_block(section)
except ValueError:
return list()
def get_section_objects(self, path):
if not isinstance(path, list):
path = [path]
obj = self.get_object(path)
if not obj:
raise ValueError('path does not exist in config')
return self.expand_section(obj)
def add(self, lines, parents=None):
"""Adds one or lines of configuration
"""
ancestors = list()
offset = 0
obj = None
## global config command
if not parents:
for line in to_list(lines):
item = ConfigLine(line)
item.raw = line
if item not in self.items:
self.items.append(item)
else:
for index, p in enumerate(parents):
try:
i = index + 1
obj = self.get_section_objects(parents[:i])[0]
ancestors.append(obj)
except ValueError:
# add parent to config
offset = index * self.indent
obj = ConfigLine(p)
obj.raw = p.rjust(len(p) + offset)
if ancestors:
obj.parents = list(ancestors)
ancestors[-1].children.append(obj)
self.items.append(obj)
ancestors.append(obj)
# add child objects
for line in to_list(lines):
# check if child already exists
for child in ancestors[-1].children:
if child.text == line:
break
else:
offset = len(parents) * self.indent
item = ConfigLine(line)
item.raw = line.rjust(len(line) + offset)
item.parents = ancestors
ancestors[-1].children.append(item)
self.items.append(item)
def get_network_module(**kwargs):
try:
return get_module(**kwargs)
except NameError:
return NetworkModule(**kwargs)
def get_config(module, include_defaults=False):
config = module.params['config']
if not config:
try:
config = module.get_config()
except AttributeError:
defaults = module.params['include_defaults']
config = module.config.get_config(include_defaults=defaults)
return CustomNetworkConfig(indent=2, contents=config)
def load_config(module, candidate):
config = get_config(module)
commands = candidate.difference(config)
commands = [str(c).strip() for c in commands]
save_config = module.params['save']
result = dict(changed=False)
if commands:
if not module.check_mode:
try:
module.configure(commands)
except AttributeError:
module.config(commands)
if save_config:
try:
module.config.save_config()
except AttributeError:
module.execute(['copy running-config startup-config'])
result['changed'] = True
result['updates'] = commands
return result
# END OF COMMON CODE
def execute_config_command(commands, module):
try:
module.configure(commands)
except ShellError:
clie = get_exception()
module.fail_json(msg='Error sending CLI commands',
error=str(clie), commands=commands)
except AttributeError:
try:
commands.insert(0, 'configure')
module.cli.add_commands(commands, output='config')
module.cli.run_commands()
except ShellError:
clie = get_exception()
module.fail_json(msg='Error sending CLI commands',
error=str(clie), commands=commands)
def get_cli_body_ssh(command, response, module):
"""Get response for when transport=cli. This is kind of a hack and mainly
needed because these modules were originally written for NX-API. And
not every command supports "| json" when using cli/ssh. As such, we assume
if | json returns an XML string, it is a valid command, but that the
resource doesn't exist yet. Instead, the output will be a raw string
when issuing commands containing 'show run'.
"""
if 'xml' in response[0] or response[0] == '\n':
body = []
elif 'status' in command:
body = response
else:
try:
if isinstance(response[0], str):
body = [json.loads(response[0])]
else:
body = response
except ValueError:
module.fail_json(msg='Command does not support JSON output',
command=command)
return body
def execute_show(cmds, module, command_type=None):
command_type_map = {
'cli_show': 'json',
'cli_show_ascii': 'text'
}
try:
if command_type:
response = module.execute(cmds, command_type=command_type)
else:
response = module.execute(cmds)
except ShellError:
clie = get_exception()
module.fail_json(msg='Error sending {0}'.format(cmds),
error=str(clie))
except AttributeError:
try:
if command_type:
command_type = command_type_map.get(command_type)
module.cli.add_commands(cmds, output=command_type)
response = module.cli.run_commands()
else:
module.cli.add_commands(cmds)
response = module.cli.run_commands()
except ShellError:
clie = get_exception()
module.fail_json(msg='Error sending {0}'.format(cmds),
error=str(clie))
return response
def execute_show_command(command, module, command_type='cli_show'):
if module.params['transport'] == 'cli':
if 'status' not in command:
command += ' | json'
cmds = [command]
response = execute_show(cmds, module)
body = get_cli_body_ssh(command, response, module)
elif module.params['transport'] == 'nxapi':
cmds = [command]
body = execute_show(cmds, module, command_type=command_type)
return body
def flatten_list(command_lists):
flat_command_list = []
for command in command_lists:
if isinstance(command, list):
flat_command_list.extend(command)
else:
flat_command_list.append(command)
return flat_command_list
def apply_key_map(key_map, table):
new_dict = {}
for key, value in table.items():
new_key = key_map.get(key)
if new_key:
value = table.get(key)
if value:
new_dict[new_key] = str(value)
else:
new_dict[new_key] = value
return new_dict
def get_vtp_config(module):
command = 'show vtp status'
body = execute_show_command(
command, module, command_type='cli_show_ascii')[0]
vtp_parsed = {}
if body:
version_regex = '.*VTP version running\s+:\s+(?P<version>\d).*'
domain_regex = '.*VTP Domain Name\s+:\s+(?P<domain>\S+).*'
try:
match_version = re.match(version_regex, body, re.DOTALL)
version = match_version.groupdict()['version']
except AttributeError:
version = ''
try:
match_domain = re.match(domain_regex, body, re.DOTALL)
domain = match_domain.groupdict()['domain']
except AttributeError:
domain = ''
if domain and version:
vtp_parsed['domain'] = domain
vtp_parsed['version'] = version
vtp_parsed['vtp_password'] = get_vtp_password(module)
return vtp_parsed
def get_vtp_password(module):
command = 'show vtp password'
body = execute_show_command(command, module)[0]
password = body['passwd']
if password:
return str(password)
else:
return ""
def main():
argument_spec = dict(
domain=dict(type='str', required=True),
)
module = get_network_module(argument_spec=argument_spec,
supports_check_mode=True)
domain = module.params['domain']
existing = get_vtp_config(module)
end_state = existing
args = dict(domain=domain)
changed = False
proposed = dict((k, v) for k, v in args.iteritems() if v is not None)
delta = dict(set(proposed.iteritems()).difference(existing.iteritems()))
commands = []
if delta:
commands.append(['vtp domain {0}'.format(domain)])
cmds = flatten_list(commands)
if cmds:
if module.check_mode:
module.exit_json(changed=True, commands=cmds)
else:
changed = True
execute_config_command(cmds, module)
end_state = get_vtp_config(module)
results = {}
results['proposed'] = proposed
results['existing'] = existing
results['end_state'] = end_state
results['updates'] = cmds
results['changed'] = changed
module.exit_json(**results)
if __name__ == '__main__':
main()