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community.general/plugins/modules/network/cloudengine/ce_config.py

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2020-03-09 10:11:07 +01:00
#!/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/>.
#
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
ANSIBLE_METADATA = {'metadata_version': '1.1',
'status': ['preview'],
'supported_by': 'community'}
DOCUMENTATION = '''
---
module: ce_config
author: "QijunPan (@QijunPan)"
short_description: Manage Huawei CloudEngine configuration sections.
description:
- Huawei CloudEngine configurations use a simple block indent file syntax
for segmenting configuration into sections. This module provides
an implementation for working with CloudEngine configuration sections in
a deterministic way. This module works with CLI transports.
notes:
- Recommended connection is C(network_cli).
- This module also works with C(local) connections for legacy playbooks.
options:
lines:
description:
- The ordered set of commands that should be configured in the
section. The commands must be the exact same commands as found
in the device current-configuration. Be sure to note the configuration
command syntax as some commands are automatically modified by the
device config parser.
parents:
description:
- The ordered set of parents that uniquely identify the section or hierarchy
the commands should be checked against. If the parents argument
is omitted, the commands are checked against the set of top
level or global commands.
src:
description:
- The I(src) argument provides a path to the configuration file
to load into the remote system. The path can either be a full
system path to the configuration file if the value starts with /
or relative to the root of the implemented role or playbook.
This argument is mutually exclusive with the I(lines) and
I(parents) arguments.
before:
description:
- The ordered set of commands to push on to the command stack if
a change needs to be made. This allows the playbook designer
the opportunity to perform configuration commands prior to pushing
any changes without affecting how the set of commands are matched
against the system.
after:
description:
- The ordered set of commands to append to the end of the command
stack if a change needs to be made. Just like with I(before) this
allows the playbook designer to append a set of commands to be
executed after the command set.
match:
description:
- Instructs the module on the way to perform the matching of
the set of commands against the current device config. If
match is set to I(line), commands are matched line by line. If
match is set to I(strict), command lines are matched with respect
to position. If match is set to I(exact), command lines
must be an equal match. Finally, if match is set to I(none), the
module will not attempt to compare the source configuration with
the current-configuration on the remote device.
default: line
choices: ['line', 'strict', 'exact', 'none']
replace:
description:
- Instructs the module on the way to perform the configuration
on the device. If the replace argument is set to I(line) then
the modified lines are pushed to the device in configuration
mode. If the replace argument is set to I(block) then the entire
command block is pushed to the device in configuration mode if any
line is not correct.
default: line
choices: ['line', 'block']
backup:
description:
- This argument will cause the module to create a full backup of
the current C(current-configuration) from the remote device before any
changes are made. If the C(backup_options) value is not given,
the backup file is written to the C(backup) folder in the playbook
root directory. If the directory does not exist, it is created.
type: bool
default: 'no'
config:
description:
- The module, by default, will connect to the remote device and
retrieve the current current-configuration to use as a base for comparing
against the contents of source. There are times when it is not
desirable to have the task get the current-configuration for
every task in a playbook. The I(config) argument allows the
implementer to pass in the configuration to use as the base
config for comparison.
defaults:
description:
- The I(defaults) argument will influence how the current-configuration
is collected from the device. When the value is set to true,
the command used to collect the current-configuration is append with
the all keyword. When the value is set to false, the command
is issued without the all keyword.
type: bool
default: 'no'
save:
description:
- The C(save) argument instructs the module to save the
current-configuration to saved-configuration. This operation is performed
after any changes are made to the current running config. If
no changes are made, the configuration is still saved to the
startup config. This option will always cause the module to
return changed.
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 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
'''
EXAMPLES = """
# Note: examples below use the following provider dict to handle
# transport and authentication to the node.
- name: CloudEngine config test
hosts: cloudengine
connection: local
gather_facts: no
vars:
cli:
host: "{{ inventory_hostname }}"
port: "{{ ansible_ssh_port }}"
username: "{{ username }}"
password: "{{ password }}"
transport: cli
tasks:
- name: "Configure top level configuration and save it"
ce_config:
lines: sysname {{ inventory_hostname }}
save: yes
provider: "{{ cli }}"
- name: "Configure acl configuration and save it"
ce_config:
lines:
- rule 10 permit source 1.1.1.1 32
- rule 20 permit source 2.2.2.2 32
- rule 30 permit source 3.3.3.3 32
- rule 40 permit source 4.4.4.4 32
- rule 50 permit source 5.5.5.5 32
parents: acl 2000
before: undo acl 2000
match: exact
provider: "{{ cli }}"
- name: "Configure acl configuration and save it"
ce_config:
lines:
- rule 10 permit source 1.1.1.1 32
- rule 20 permit source 2.2.2.2 32
- rule 30 permit source 3.3.3.3 32
- rule 40 permit source 4.4.4.4 32
parents: acl 2000
before: undo acl 2000
replace: block
provider: "{{ cli }}"
- name: configurable backup path
ce_config:
lines: sysname {{ inventory_hostname }}
provider: "{{ cli }}"
backup: yes
backup_options:
filename: backup.cfg
dir_path: /home/user
"""
RETURN = """
updates:
description: The set of commands that will be pushed to the remote device
returned: Only when lines is specified.
type: list
sample: ['...', '...']
backup_path:
description: The full path to the backup file
returned: when backup is yes
type: str
sample: /playbooks/ansible/backup/ce_config.2016-07-16@22:28:34
"""
from ansible.module_utils.basic import AnsibleModule
from ansible.module_utils.connection import ConnectionError, Connection
from ansible_collections.ansible.netcommon.plugins.module_utils.network.common.config import NetworkConfig as _NetworkConfig
from ansible_collections.ansible.netcommon.plugins.module_utils.network.common.config import dumps, ConfigLine, ignore_line
from ansible_collections.community.general.plugins.module_utils.network.cloudengine.ce import get_config, run_commands, exec_command, cli_err_msg
from ansible_collections.community.general.plugins.module_utils.network.cloudengine.ce import ce_argument_spec, load_config
from ansible_collections.community.general.plugins.module_utils.network.cloudengine.ce import check_args as ce_check_args
import re
def check_args(module, warnings):
ce_check_args(module, warnings)
def not_user_view(prompt):
return prompt is not None and prompt.strip().startswith("[")
def command_level(command):
regex_level = re.search(r"^(\s*)\S+", command)
if regex_level is not None:
level = str(regex_level.group(1))
return len(level)
return 0
def _load_config(module, config):
"""Sends configuration commands to the remote device
"""
connection = Connection(module._socket_path)
rc, out, err = exec_command(module, 'mmi-mode enable')
if rc != 0:
module.fail_json(msg='unable to set mmi-mode enable', output=err)
rc, out, err = exec_command(module, 'system-view immediately')
if rc != 0:
module.fail_json(msg='unable to enter system-view', output=err)
current_view_prompt = system_view_prompt = connection.get_prompt()
for index, cmd in enumerate(config):
level = command_level(cmd)
current_view_prompt = connection.get_prompt()
rc, out, err = exec_command(module, cmd)
if rc != 0:
print_msg = cli_err_msg(cmd.strip(), err)
# re-try command max 3 times
for i in (1, 2, 3):
current_view_prompt = connection.get_prompt()
if current_view_prompt != system_view_prompt and not_user_view(current_view_prompt):
exec_command(module, "quit")
current_view_prompt = connection.get_prompt()
# if current view is system-view, break.
if current_view_prompt == system_view_prompt and level > 0:
break
elif current_view_prompt == system_view_prompt or not not_user_view(current_view_prompt):
break
rc, out, err = exec_command(module, cmd)
if rc == 0:
print_msg = None
break
if print_msg is not None:
module.fail_json(msg=print_msg)
def get_running_config(module):
contents = module.params['config']
if not contents:
command = "display current-configuration "
if module.params['defaults']:
command += 'include-default'
resp = run_commands(module, command)
contents = resp[0]
return NetworkConfig(indent=1, contents=contents)
def get_candidate(module):
candidate = NetworkConfig(indent=1)
if module.params['src']:
config = module.params['src']
candidate.load(config)
elif module.params['lines']:
parents = module.params['parents'] or list()
candidate.add(module.params['lines'], parents=parents)
return candidate
def run(module, result):
match = module.params['match']
replace = module.params['replace']
candidate = get_candidate(module)
if match != 'none':
before = get_running_config(module)
path = module.params['parents']
configobjs = candidate.difference(before, match=match, replace=replace, path=path)
else:
configobjs = candidate.items
if configobjs:
out_type = "commands"
if module.params["src"] is not None:
out_type = "raw"
commands = dumps(configobjs, out_type).split('\n')
if module.params['lines']:
if module.params['before']:
commands[:0] = module.params['before']
if module.params['after']:
commands.extend(module.params['after'])
command_display = []
for per_command in commands:
if per_command.strip() not in ['quit', 'return', 'system-view']:
command_display.append(per_command)
result['commands'] = command_display
result['updates'] = command_display
if not module.check_mode:
if module.params['parents'] is not None:
load_config(module, commands)
else:
_load_config(module, commands)
if match != "none":
after = get_running_config(module)
path = module.params["parents"]
if path is not None and match != 'line':
before_objs = before.get_block(path)
after_objs = after.get_block(path)
update = []
if len(before_objs) == len(after_objs):
for b_item, a_item in zip(before_objs, after_objs):
if b_item != a_item:
update.append(a_item.text)
else:
update = [item.text for item in after_objs]
if len(update) == 0:
result["changed"] = False
result['updates'] = []
else:
result["changed"] = True
result['updates'] = update
else:
configobjs = after.difference(before, match=match, replace=replace, path=path)
if len(configobjs) > 0:
result["changed"] = True
else:
result["changed"] = False
result['updates'] = []
else:
result['changed'] = True
class NetworkConfig(_NetworkConfig):
def add(self, lines, parents=None):
ancestors = list()
offset = 0
obj = None
# global config command
if not parents:
for line in lines:
# handle ignore lines
if ignore_line(line):
continue
item = ConfigLine(line)
item.raw = line
self.items.append(item)
else:
for index, p in enumerate(parents):
try:
i = index + 1
obj = self.get_block(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 lines:
# handle ignore lines
if ignore_line(line):
continue
# 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 main():
""" main entry point for module execution
"""
backup_spec = dict(
filename=dict(),
dir_path=dict(type='path')
)
argument_spec = dict(
src=dict(type='path'),
lines=dict(aliases=['commands'], type='list'),
parents=dict(type='list'),
before=dict(type='list'),
after=dict(type='list'),
match=dict(default='line', choices=['line', 'strict', 'exact', 'none']),
replace=dict(default='line', choices=['line', 'block']),
config=dict(),
defaults=dict(type='bool', default=False),
backup=dict(type='bool', default=False),
backup_options=dict(type='dict', options=backup_spec),
save=dict(type='bool', default=False),
)
argument_spec.update(ce_argument_spec)
mutually_exclusive = [('lines', 'src'),
('parents', 'src')]
required_if = [('match', 'strict', ['lines']),
('match', 'exact', ['lines']),
('replace', 'block', ['lines'])]
module = AnsibleModule(argument_spec=argument_spec,
mutually_exclusive=mutually_exclusive,
required_if=required_if,
supports_check_mode=True)
warnings = list()
check_args(module, warnings)
result = dict(changed=False, warnings=warnings)
if module.params['backup']:
result['__backup__'] = get_config(module)
if any((module.params['src'], module.params['lines'])):
run(module, result)
if module.params['save']:
if not module.check_mode:
run_commands(module, ['return', 'mmi-mode enable', 'save'])
result["changed"] = True
run_commands(module, ['return', 'undo mmi-mode enable'])
module.exit_json(**result)
if __name__ == '__main__':
main()