mirror of https://github.com/ansible/ansible.git
Adding nxos_acl_interface_module
GGabriele
8 years ago
parent
c6c281b125
commit
224a47b718
@ -0,0 +1,765 @@
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#!/usr/bin/python
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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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---
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module: nxos_acl_interface
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version_added: "2.2"
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short_description: Manages applying ACLs to interfaces.
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description
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- Manages applying ACLs to interfaces.
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extends_documentation_fragment: nxos
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author:
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- Jason Edelman (@jedelman8)
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- Gabriele Gerbino (@GGabriele)
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options:
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name:
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description:
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- Case sensitive name of the access list (ACL).
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required: true
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interface:
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description:
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- Full name of interface. MUST be the full name.
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required: true
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direction:
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description:
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- Direction ACL to be applied in on the interface.
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required: true
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choices: ['ingress', 'egress']
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state:
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description:
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- Specify desired state of the resource.
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required: false
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default: present
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choices: ['present','absent']
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'''
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EXAMPLES = '''
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- name: apply egress acl to ethernet1/41
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nxos_acl_interface:
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name: ANSIBLE
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interface: ethernet1/41
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direction: egress
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state: present
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username: "{{ un }}"
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password: "{{ pwd }}"
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host: "{{ inventory_hostname }}"
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'''
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RETURN = '''
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proposed:
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description: k/v pairs of parameters passed into module
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returned: always
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type: dict
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sample: {"direction": "egress", "interface": "ethernet1/41",
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"name": "ANSIBLE"}
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existing:
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description: k/v pairs of existing ACL applied to the interface
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type: dict
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sample: {}
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end_state:
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description: k/v pairs of interface ACL after module execution
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returned: always
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type: dict
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sample: {"direction": "egress", "interface": "ethernet1/41",
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"name": "ANSIBLE"}
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acl_applied_to:
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description: list of interfaces the ACL is applied to
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returned: always
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type: list
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sample: [{"acl_type": "Router ACL", "direction": "egress",
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"interface": "Ethernet1/41", "name": "ANSIBLE"}]
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state:
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description: state as sent in from the playbook
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returned: always
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type: string
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sample: "present"
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updates:
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description: commands sent to the device
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returned: always
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type: list
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sample: ["interface ethernet1/41", "ip access-group ANSIBLE out"]
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changed:
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description: check to see if a change was made on the device
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returned: always
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type: boolean
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sample: true
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'''
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# COMMON CODE FOR MIGRATION
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import re
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import time
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import collections
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import itertools
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import shlex
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import itertools
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from ansible.module_utils.basic import BOOLEANS_TRUE, BOOLEANS_FALSE
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DEFAULT_COMMENT_TOKENS = ['#', '!']
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class ConfigLine(object):
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def __init__(self, text):
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self.text = text
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self.children = list()
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self.parents = list()
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self.raw = None
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@property
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def line(self):
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line = ['set']
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line.extend([p.text for p in self.parents])
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line.append(self.text)
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return ' '.join(line)
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def __str__(self):
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return self.raw
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def __eq__(self, other):
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if self.text == other.text:
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return self.parents == other.parents
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def __ne__(self, other):
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return not self.__eq__(other)
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def ignore_line(text, tokens=None):
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for item in (tokens or DEFAULT_COMMENT_TOKENS):
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if text.startswith(item):
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return True
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def get_next(iterable):
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item, next_item = itertools.tee(iterable, 2)
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next_item = itertools.islice(next_item, 1, None)
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return itertools.izip_longest(item, next_item)
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def parse(lines, indent, comment_tokens=None):
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toplevel = re.compile(r'\S')
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childline = re.compile(r'^\s*(.+)$')
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ancestors = list()
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config = list()
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for line in str(lines).split('\n'):
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text = str(re.sub(r'([{};])', '', line)).strip()
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cfg = ConfigLine(text)
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cfg.raw = line
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if not text or ignore_line(text, comment_tokens):
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continue
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# handle top level commands
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if toplevel.match(line):
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ancestors = [cfg]
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# handle sub level commands
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else:
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match = childline.match(line)
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line_indent = match.start(1)
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level = int(line_indent / indent)
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parent_level = level - 1
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cfg.parents = ancestors[:level]
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if level > len(ancestors):
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config.append(cfg)
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continue
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for i in range(level, len(ancestors)):
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ancestors.pop()
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ancestors.append(cfg)
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ancestors[parent_level].children.append(cfg)
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config.append(cfg)
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return config
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class CustomNetworkConfig(object):
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def __init__(self, indent=None, contents=None, device_os=None):
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self.indent = indent or 1
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self._config = list()
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self._device_os = device_os
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if contents:
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self.load(contents)
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@property
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def items(self):
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return self._config
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@property
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def lines(self):
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lines = list()
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for item, next_item in get_next(self.items):
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if next_item is None:
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lines.append(item.line)
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elif not next_item.line.startswith(item.line):
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lines.append(item.line)
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return lines
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def __str__(self):
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text = ''
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for item in self.items:
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if not item.parents:
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expand = self.get_section(item.text)
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text += '%s\n' % self.get_section(item.text)
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return str(text).strip()
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def load(self, contents):
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self._config = parse(contents, indent=self.indent)
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def load_from_file(self, filename):
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self.load(open(filename).read())
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def get(self, path):
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if isinstance(path, basestring):
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path = [path]
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for item in self._config:
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if item.text == path[-1]:
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parents = [p.text for p in item.parents]
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if parents == path[:-1]:
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return item
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def search(self, regexp, path=None):
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regex = re.compile(r'^%s' % regexp, re.M)
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if path:
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parent = self.get(path)
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if not parent or not parent.children:
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return
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children = [c.text for c in parent.children]
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data = '\n'.join(children)
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else:
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data = str(self)
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match = regex.search(data)
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if match:
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if match.groups():
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values = match.groupdict().values()
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groups = list(set(match.groups()).difference(values))
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return (groups, match.groupdict())
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else:
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return match.group()
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def findall(self, regexp):
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regexp = r'%s' % regexp
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return re.findall(regexp, str(self))
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def expand(self, obj, items):
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block = [item.raw for item in obj.parents]
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block.append(obj.raw)
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current_level = items
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for b in block:
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if b not in current_level:
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current_level[b] = collections.OrderedDict()
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current_level = current_level[b]
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for c in obj.children:
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if c.raw not in current_level:
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current_level[c.raw] = collections.OrderedDict()
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def to_lines(self, section):
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lines = list()
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for entry in section[1:]:
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line = ['set']
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line.extend([p.text for p in entry.parents])
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line.append(entry.text)
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lines.append(' '.join(line))
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return lines
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def to_block(self, section):
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return '\n'.join([item.raw for item in section])
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def get_section(self, path):
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try:
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section = self.get_section_objects(path)
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if self._device_os == 'junos':
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return self.to_lines(section)
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return self.to_block(section)
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except ValueError:
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return list()
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def get_section_objects(self, path):
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if not isinstance(path, list):
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path = [path]
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obj = self.get_object(path)
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if not obj:
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raise ValueError('path does not exist in config')
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return self.expand_section(obj)
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def expand_section(self, configobj, S=None):
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if S is None:
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S = list()
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S.append(configobj)
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for child in configobj.children:
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if child in S:
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continue
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self.expand_section(child, S)
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return S
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def flatten(self, data, obj=None):
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if obj is None:
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obj = list()
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for k, v in data.items():
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obj.append(k)
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self.flatten(v, obj)
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return obj
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def get_object(self, path):
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for item in self.items:
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if item.text == path[-1]:
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parents = [p.text for p in item.parents]
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if parents == path[:-1]:
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return item
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def get_children(self, path):
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obj = self.get_object(path)
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if obj:
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return obj.children
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def difference(self, other, path=None, match='line', replace='line'):
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updates = list()
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config = self.items
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if path:
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config = self.get_children(path) or list()
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if match == 'line':
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for item in config:
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if item not in other.items:
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updates.append(item)
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elif match == 'strict':
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if path:
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current = other.get_children(path) or list()
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else:
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current = other.items
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for index, item in enumerate(config):
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try:
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if item != current[index]:
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updates.append(item)
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except IndexError:
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updates.append(item)
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elif match == 'exact':
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if path:
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current = other.get_children(path) or list()
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else:
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current = other.items
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if len(current) != len(config):
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updates.extend(config)
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else:
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for ours, theirs in itertools.izip(config, current):
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if ours != theirs:
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updates.extend(config)
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break
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if self._device_os == 'junos':
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return updates
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diffs = collections.OrderedDict()
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for update in updates:
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if replace == 'block' and update.parents:
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update = update.parents[-1]
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self.expand(update, diffs)
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return self.flatten(diffs)
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def replace(self, replace, text=None, regex=None, parents=None,
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add_if_missing=False, ignore_whitespace=False):
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match = None
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parents = parents or list()
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if text is None and regex is None:
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raise ValueError('missing required arguments')
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if not regex:
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regex = ['^%s$' % text]
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patterns = [re.compile(r, re.I) for r in to_list(regex)]
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for item in self.items:
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for regexp in patterns:
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if ignore_whitespace is True:
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string = item.text
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else:
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string = item.raw
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if regexp.search(item.text):
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if item.text != replace:
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if parents == [p.text for p in item.parents]:
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match = item
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break
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if match:
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match.text = replace
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indent = len(match.raw) - len(match.raw.lstrip())
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match.raw = replace.rjust(len(replace) + indent)
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elif add_if_missing:
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self.add(replace, parents=parents)
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def add(self, lines, parents=None):
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"""Adds one or lines of configuration
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"""
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ancestors = list()
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offset = 0
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obj = None
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## global config command
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if not parents:
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for line in to_list(lines):
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item = ConfigLine(line)
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item.raw = line
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if item not in self.items:
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self.items.append(item)
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else:
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for index, p in enumerate(parents):
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try:
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i = index + 1
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obj = self.get_section_objects(parents[:i])[0]
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ancestors.append(obj)
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except ValueError:
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# add parent to config
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offset = index * self.indent
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obj = ConfigLine(p)
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obj.raw = p.rjust(len(p) + offset)
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if ancestors:
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obj.parents = list(ancestors)
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ancestors[-1].children.append(obj)
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self.items.append(obj)
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ancestors.append(obj)
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# add child objects
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for line in to_list(lines):
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# check if child already exists
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for child in ancestors[-1].children:
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if child.text == line:
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break
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else:
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offset = len(parents) * self.indent
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item = ConfigLine(line)
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item.raw = line.rjust(len(line) + offset)
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item.parents = ancestors
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ancestors[-1].children.append(item)
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self.items.append(item)
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def argument_spec():
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return dict(
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# config options
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running_config=dict(aliases=['config']),
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save_config=dict(type='bool', default=False, aliases=['save'])
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)
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nxos_argument_spec = argument_spec()
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def get_config(module):
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config = module.params['running_config']
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if not config:
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config = module.get_config()
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return CustomNetworkConfig(indent=2, contents=config)
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def load_config(module, candidate):
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config = get_config(module)
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commands = candidate.difference(config)
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commands = [str(c).strip() for c in commands]
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save_config = module.params['save_config']
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result = dict(changed=False)
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if commands:
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if not module.check_mode:
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module.configure(commands)
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if save_config:
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module.config.save_config()
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result['changed'] = True
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result['updates'] = commands
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return result
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# END OF COMMON CODE
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def get_cli_body_ssh(command, response, module):
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"""Get response for when transport=cli. This is kind of a hack and mainly
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needed because these modules were originally written for NX-API. And
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not every command supports "| json" when using cli/ssh. As such, we assume
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if | json returns an XML string, it is a valid command, but that the
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resource doesn't exist yet. Instead, we assume if '^' is found in response,
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it is an invalid command.
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"""
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if 'xml' in response[0]:
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body = []
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elif '^' in response[0] or 'summary' in command:
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body = response
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||||
else:
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||||
try:
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||||
body = [json.loads(response[0])]
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except ValueError:
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||||
module.fail_json(msg='Command does not support JSON output',
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command=command)
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return body
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||||
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def execute_show(cmds, module, command_type=None):
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try:
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||||
if command_type:
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||||
response = module.execute(cmds, command_type=command_type)
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||||
else:
|
||||
response = module.execute(cmds)
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||||
except ShellError:
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||||
clie = get_exception()
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||||
module.fail_json(msg='Error sending {0}'.format(cmds),
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error=str(clie))
|
||||
return response
|
||||
|
||||
|
||||
def execute_show_command(command, module, command_type='cli_show'):
|
||||
if module.params['transport'] == 'cli':
|
||||
if 'summary' 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 get_acl_interface(module, acl):
|
||||
command = 'show ip access-list summary'
|
||||
name_regex = '.*IPV4\s+ACL\s+(?P<name>\S+).*'
|
||||
interface_regex = ('.*\s+(?P<interface>\w+(\d+)?\/?(\d+)?)\s-\s'
|
||||
'(?P<direction>\w+)\s+\W(?P<acl_type>\w+\s\w+)\W.*')
|
||||
acl_list = []
|
||||
|
||||
body = execute_show_command(command, module, command_type='cli_show_ascii')
|
||||
body_split = body[0].split('Active on interfaces:')
|
||||
|
||||
for each_acl in body_split:
|
||||
intf_list = []
|
||||
temp = {}
|
||||
try:
|
||||
match_name = re.match(name_regex, each_acl, re.DOTALL)
|
||||
name_dict = match_name.groupdict()
|
||||
name = name_dict['name']
|
||||
except AttributeError:
|
||||
name = ''
|
||||
|
||||
temp['interfaces'] = []
|
||||
for line in each_acl.split('\n'):
|
||||
intf_temp = {}
|
||||
try:
|
||||
match_interface = re.match(interface_regex, line, re.DOTALL)
|
||||
interface_dict = match_interface.groupdict()
|
||||
interface = interface_dict['interface']
|
||||
direction = interface_dict['direction']
|
||||
acl_type = interface_dict['acl_type']
|
||||
except AttributeError:
|
||||
interface = ''
|
||||
direction = ''
|
||||
acl_type = ''
|
||||
|
||||
if interface:
|
||||
intf_temp['interface'] = interface
|
||||
if acl_type:
|
||||
intf_temp['acl_type'] = acl_type
|
||||
if direction:
|
||||
intf_temp['direction'] = direction
|
||||
if intf_temp:
|
||||
temp['interfaces'].append(intf_temp)
|
||||
if name:
|
||||
temp['name'] = name
|
||||
|
||||
if temp:
|
||||
acl_list.append(temp)
|
||||
|
||||
existing_no_null = []
|
||||
for each in acl_list:
|
||||
if each.get('name') == acl:
|
||||
interfaces = each.get('interfaces')
|
||||
for interface in interfaces:
|
||||
new_temp = {}
|
||||
new_temp['name'] = acl
|
||||
new_temp.update(interface)
|
||||
existing_no_null.append(new_temp)
|
||||
return existing_no_null
|
||||
|
||||
|
||||
def other_existing_acl(get_existing, interface, direction):
|
||||
# now we'll just get the interface in question
|
||||
# needs to be a list since same acl could be applied in both dirs
|
||||
acls_interface = []
|
||||
if get_existing:
|
||||
for each in get_existing:
|
||||
if each.get('interface').lower() == interface:
|
||||
acls_interface.append(each)
|
||||
else:
|
||||
acls_interface = []
|
||||
|
||||
if acls_interface:
|
||||
this = {}
|
||||
for each in acls_interface:
|
||||
if each.get('direction') == direction:
|
||||
this = each
|
||||
else:
|
||||
acls_interface = []
|
||||
this = {}
|
||||
|
||||
return acls_interface, this
|
||||
|
||||
|
||||
def apply_acl(proposed):
|
||||
commands = []
|
||||
|
||||
commands.append('interface ' + proposed.get('interface'))
|
||||
direction = proposed.get('direction')
|
||||
if direction == 'egress':
|
||||
cmd = 'ip access-group {0} {1}'.format(proposed.get('name'), 'out')
|
||||
elif direction == 'ingress':
|
||||
cmd = 'ip access-group {0} {1}'.format(proposed.get('name'), 'in')
|
||||
commands.append(cmd)
|
||||
|
||||
return commands
|
||||
|
||||
|
||||
def remove_acl(proposed):
|
||||
commands = []
|
||||
|
||||
commands.append('interface ' + proposed.get('interface'))
|
||||
direction = proposed.get('direction')
|
||||
if direction == 'egress':
|
||||
cmd = 'no ip access-group {0} {1}'.format(proposed.get('name'), 'out')
|
||||
elif direction == 'ingress':
|
||||
cmd = 'no ip access-group {0} {1}'.format(proposed.get('name'), 'in')
|
||||
commands.append(cmd)
|
||||
|
||||
return commands
|
||||
|
||||
|
||||
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 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)
|
||||
|
||||
|
||||
def main():
|
||||
argument_spec = dict(
|
||||
name=dict(required=False, type='str'),
|
||||
interface=dict(required=True),
|
||||
direction=dict(required=True, choices=['egress', 'ingress']),
|
||||
state=dict(choices=['absent', 'present'],
|
||||
default='present'),
|
||||
)
|
||||
argument_spec.update(nxos_argument_spec)
|
||||
module = get_module(argument_spec=argument_spec,
|
||||
supports_check_mode=True)
|
||||
|
||||
state = module.params['state']
|
||||
name = module.params['name']
|
||||
interface = module.params['interface'].lower()
|
||||
direction = module.params['direction'].lower()
|
||||
|
||||
proposed = dict(name=name, interface=interface, direction=direction)
|
||||
|
||||
# includes all interfaces the ACL is applied to (list)
|
||||
get_existing = get_acl_interface(module, name)
|
||||
|
||||
# interface_acls = includes entries of this ACL on the interface (list)
|
||||
# this_dir_acl_intf = dict - not null if it already exists
|
||||
interfaces_acls, existing = other_existing_acl(
|
||||
get_existing, interface, direction)
|
||||
|
||||
end_state = existing
|
||||
end_state_acls = get_existing
|
||||
changed = False
|
||||
|
||||
cmds = []
|
||||
commands = []
|
||||
if state == 'present':
|
||||
if not existing:
|
||||
command = apply_acl(proposed)
|
||||
if command:
|
||||
commands.append(command)
|
||||
|
||||
elif state == 'absent':
|
||||
if existing:
|
||||
command = remove_acl(proposed)
|
||||
if command:
|
||||
commands.append(command)
|
||||
|
||||
if commands:
|
||||
cmds = flatten_list(commands)
|
||||
if cmds:
|
||||
if module.check_mode:
|
||||
module.exit_json(changed=True, commands=cmds)
|
||||
else:
|
||||
execute_config_command(cmds, module)
|
||||
changed = True
|
||||
end_state_acls = get_acl_interface(module, name)
|
||||
interfaces_acls, this_dir_acl_intf = other_existing_acl(
|
||||
end_state_acls, interface, direction)
|
||||
end_state = this_dir_acl_intf
|
||||
else:
|
||||
cmds = []
|
||||
|
||||
results = {}
|
||||
results['proposed'] = proposed
|
||||
results['existing'] = existing
|
||||
results['state'] = state
|
||||
results['updates'] = cmds
|
||||
results['changed'] = changed
|
||||
results['end_state'] = end_state
|
||||
results['acl_applied_to'] = end_state_acls
|
||||
|
||||
module.exit_json(**results)
|
||||
|
||||
from ansible.module_utils.basic import *
|
||||
from ansible.module_utils.urls import *
|
||||
from ansible.module_utils.shell import *
|
||||
from ansible.module_utils.netcfg import *
|
||||
from ansible.module_utils.nxos import *
|
||||
if __name__ == '__main__':
|
||||
main()
|
||||
Loading…
Reference in New Issue