630 lines
19 KiB
Python
630 lines
19 KiB
Python
#!/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_vlan
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version_added: "2.1"
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short_description: Manages VLAN resources and attributes.
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description:
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- Manages VLAN configurations on NX-OS switches.
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author: Jason Edelman (@jedelman8)
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extends_documentation_fragment: nxos
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options:
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vlan_id:
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description:
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- Single VLAN ID.
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required: false
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default: null
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vlan_range:
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description:
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- Range of VLANs such as 2-10 or 2,5,10-15, etc.
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required: false
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default: null
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name:
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description:
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- Name of VLAN.
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required: false
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default: null
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vlan_state:
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description:
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- Manage the vlan operational state of the VLAN
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(equivalent to state {active | suspend} command.
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required: false
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default: active
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choices: ['active','suspend']
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admin_state:
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description:
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- Manage the VLAN administrative state of the VLAN equivalent
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to shut/no shut in VLAN config mode.
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required: false
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default: up
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choices: ['up','down']
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mapped_vni:
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description:
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- The Virtual Network Identifier (VNI) ID that is mapped to the
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VLAN. Valid values are integer and keyword 'default'.
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required: false
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default: null
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version_added: "2.2"
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state:
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description:
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- Manage the 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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# Ensure a range of VLANs are not present on the switch
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- nxos_vlan: vlan_range="2-10,20,50,55-60,100-150" host=68.170.147.165 username=cisco password=cisco state=absent transport=nxapi
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# Ensure VLAN 50 exists with the name WEB and is in the shutdown state
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- nxos_vlan: vlan_id=50 host=68.170.147.165 admin_state=down name=WEB transport=nxapi username=cisco password=cisco
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# Ensure VLAN is NOT on the device
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- nxos_vlan: vlan_id=50 host=68.170.147.165 state=absent transport=nxapi username=cisco password=cisco
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'''
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RETURN = '''
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proposed_vlans_list:
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description: list of VLANs being proposed
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returned: always
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type: list
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sample: ["100"]
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existing_vlans_list:
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description: list of existing VLANs on the switch prior to making changes
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returned: always
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type: list
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sample: ["1", "2", "3", "4", "5", "20"]
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end_state_vlans_list:
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description: list of VLANs after the module is executed
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returned: always
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type: list
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sample: ["1", "2", "3", "4", "5", "20", "100"]
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proposed:
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description: k/v pairs of parameters passed into module (does not include
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vlan_id or vlan_range)
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returned: always
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type: dict or null
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sample: {"admin_state": "down", "name": "app_vlan",
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"vlan_state": "suspend", "mapped_vni": "5000"}
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existing:
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description: k/v pairs of existing vlan or null when using vlan_range
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returned: always
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type: dict
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sample: {"admin_state": "down", "name": "app_vlan",
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"vlan_id": "20", "vlan_state": "suspend", "mapped_vni": ""}
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end_state:
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description: k/v pairs of the VLAN after executing module or null
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when using vlan_range
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returned: always
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type: dict or null
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sample: {"admin_state": "down", "name": "app_vlan", "vlan_id": "20",
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"vlan_state": "suspend", "mapped_vni": "5000"}
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updates:
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description: command string sent to the device
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returned: always
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type: list
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sample: ["vlan 20", "vlan 55", "vn-segment 5000"]
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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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import json
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import collections
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# COMMON CODE FOR MIGRATION
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import re
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from ansible.module_utils.basic import get_exception
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from ansible.module_utils.netcfg import NetworkConfig, ConfigLine
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from ansible.module_utils.shell import ShellError
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try:
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from ansible.module_utils.nxos import get_module
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except ImportError:
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from ansible.module_utils.nxos import NetworkModule
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def to_list(val):
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if isinstance(val, (list, tuple)):
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return list(val)
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elif val is not None:
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return [val]
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else:
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return list()
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class CustomNetworkConfig(NetworkConfig):
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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 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 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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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 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 get_network_module(**kwargs):
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try:
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return get_module(**kwargs)
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except NameError:
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return NetworkModule(**kwargs)
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def get_config(module, include_defaults=False):
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config = module.params['config']
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if not config:
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try:
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config = module.get_config()
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except AttributeError:
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defaults = module.params['include_defaults']
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config = module.config.get_config(include_defaults=defaults)
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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']
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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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try:
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module.configure(commands)
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except AttributeError:
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module.config(commands)
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if save_config:
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try:
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module.config.save_config()
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except AttributeError:
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module.execute(['copy running-config startup-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 vlan_range_to_list(vlans):
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result = []
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if vlans:
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for part in vlans.split(','):
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if part == 'none':
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break
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if '-' in part:
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a, b = part.split('-')
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a, b = int(a), int(b)
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result.extend(range(a, b + 1))
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else:
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a = int(part)
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result.append(a)
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return numerical_sort(result)
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return result
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def numerical_sort(string_int_list):
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"""Sort list of strings (VLAN IDs) that are digits in numerical order.
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"""
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as_int_list = []
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as_str_list = []
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for vlan in string_int_list:
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as_int_list.append(int(vlan))
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as_int_list.sort()
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for vlan in as_int_list:
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as_str_list.append(str(vlan))
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return as_str_list
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def build_commands(vlans, state):
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commands = []
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for vlan in vlans:
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if state == 'present':
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command = 'vlan {0}'.format(vlan)
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commands.append(command)
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elif state == 'absent':
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command = 'no vlan {0}'.format(vlan)
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commands.append(command)
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return commands
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def get_vlan_config_commands(vlan, vid):
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"""Build command list required for VLAN configuration
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"""
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reverse_value_map = {
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"admin_state": {
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"down": "shutdown",
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"up": "no shutdown"
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}
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}
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if vlan.get('admin_state'):
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# apply value map when making change to the admin state
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# note: would need to be a loop or more in depth check if
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# value map has more than 1 key
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vlan = apply_value_map(reverse_value_map, vlan)
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VLAN_ARGS = {
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'name': 'name {0}',
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'vlan_state': 'state {0}',
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'admin_state': '{0}',
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'mode': 'mode {0}',
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'mapped_vni': 'vn-segment {0}'
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}
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commands = []
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for param, value in vlan.iteritems():
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if param == 'mapped_vni' and value == 'default':
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command = 'no vn-segment'
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else:
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command = VLAN_ARGS.get(param).format(vlan.get(param))
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if command:
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commands.append(command)
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commands.insert(0, 'vlan ' + vid)
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commands.append('exit')
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return commands
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def get_list_of_vlans(module):
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command = 'show vlan'
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body = execute_show_command(command, module)
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vlan_list = []
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vlan_table = body[0].get('TABLE_vlanbrief')['ROW_vlanbrief']
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if isinstance(vlan_table, list):
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for vlan in vlan_table:
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vlan_list.append(str(vlan['vlanshowbr-vlanid-utf']))
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else:
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vlan_list.append('1')
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return vlan_list
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def get_vni(vlanid, module):
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command = 'show run all | section vlan.{0}'.format(vlanid)
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body = execute_show_command(command, module, command_type='cli_show_ascii')[0]
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value = ''
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if body:
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REGEX = re.compile(r'(?:vn-segment\s)(?P<value>.*)$', re.M)
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if 'vn-segment' in body:
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value = REGEX.search(body).group('value')
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return value
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def get_vlan(vlanid, module):
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"""Get instance of VLAN as a dictionary
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"""
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command = 'show vlan id ' + vlanid
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body = execute_show_command(command, module)
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try:
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vlan_table = body[0]['TABLE_vlanbriefid']['ROW_vlanbriefid']
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except (TypeError, IndexError):
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return {}
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key_map = {
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"vlanshowbr-vlanid-utf": "vlan_id",
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"vlanshowbr-vlanname": "name",
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"vlanshowbr-vlanstate": "vlan_state",
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"vlanshowbr-shutstate": "admin_state"
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}
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vlan = apply_key_map(key_map, vlan_table)
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value_map = {
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"admin_state": {
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"shutdown": "down",
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"noshutdown": "up"
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}
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}
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vlan = apply_value_map(value_map, vlan)
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vlan['mapped_vni'] = get_vni(vlanid, module)
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return vlan
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def apply_key_map(key_map, table):
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new_dict = {}
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for key, value in table.items():
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new_key = key_map.get(key)
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if new_key:
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new_dict[new_key] = str(value)
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return new_dict
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def apply_value_map(value_map, resource):
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for key, value in value_map.items():
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resource[key] = value[resource.get(key)]
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return resource
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def execute_config_command(commands, module):
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try:
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module.configure(commands)
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except ShellError:
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clie = get_exception()
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module.fail_json(msg='Error sending CLI commands',
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error=str(clie), commands=commands)
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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.
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"""
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if 'show run' in command or response[0] == '\n':
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body = response
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elif 'xml' in response[0]:
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body = []
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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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def execute_show(cmds, module, command_type=None):
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command_type_map = {
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'cli_show': 'json',
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'cli_show_ascii': 'text'
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}
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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:
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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))
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except AttributeError:
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try:
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if command_type:
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command_type = command_type_map.get(command_type)
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module.cli.add_commands(cmds, output=command_type)
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response = module.cli.run_commands()
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else:
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module.cli.add_commands(cmds, output=command_type)
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response = module.cli.run_commands()
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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))
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return response
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def execute_show_command(command, module, command_type='cli_show'):
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if module.params['transport'] == 'cli':
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if 'show run' not in command:
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command += ' | json'
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cmds = [command]
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response = execute_show(cmds, module)
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body = get_cli_body_ssh(command, response, module)
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elif module.params['transport'] == 'nxapi':
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cmds = [command]
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body = execute_show(cmds, module, command_type=command_type)
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return body
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def main():
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argument_spec = dict(
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vlan_id=dict(required=False, type='str'),
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vlan_range=dict(required=False),
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name=dict(required=False),
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vlan_state=dict(choices=['active', 'suspend'], required=False),
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mapped_vni=dict(required=False, type='str'),
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state=dict(choices=['present', 'absent'], default='present',
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required=False),
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admin_state=dict(choices=['up', 'down'], required=False),
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include_defaults=dict(default=False),
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config=dict(),
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save=dict(type='bool', default=False)
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)
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module = get_network_module(argument_spec=argument_spec,
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mutually_exclusive=[['vlan_range', 'name'],
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['vlan_id', 'vlan_range']],
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supports_check_mode=True)
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vlan_range = module.params['vlan_range']
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vlan_id = module.params['vlan_id']
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name = module.params['name']
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vlan_state = module.params['vlan_state']
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admin_state = module.params['admin_state']
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mapped_vni = module.params['mapped_vni']
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|
state = module.params['state']
|
|
|
|
changed = False
|
|
|
|
if vlan_id:
|
|
if not vlan_id.isdigit():
|
|
module.fail_json(msg='vlan_id must be a valid VLAN ID')
|
|
|
|
args = dict(name=name, vlan_state=vlan_state,
|
|
admin_state=admin_state, mapped_vni=mapped_vni)
|
|
|
|
proposed = dict((k, v) for k, v in args.iteritems() if v is not None)
|
|
|
|
proposed_vlans_list = numerical_sort(vlan_range_to_list(
|
|
vlan_id or vlan_range))
|
|
existing_vlans_list = numerical_sort(get_list_of_vlans(module))
|
|
|
|
commands = []
|
|
existing = None
|
|
|
|
if vlan_range:
|
|
if state == 'present':
|
|
# These are all of the VLANs being proposed that don't
|
|
# already exist on the switch
|
|
vlans_delta = list(
|
|
set(proposed_vlans_list).difference(existing_vlans_list))
|
|
commands = build_commands(vlans_delta, state)
|
|
elif state == 'absent':
|
|
# VLANs that are common between what is being proposed and
|
|
# what is on the switch
|
|
vlans_common = list(
|
|
set(proposed_vlans_list).intersection(existing_vlans_list))
|
|
commands = build_commands(vlans_common, state)
|
|
else:
|
|
existing = get_vlan(vlan_id, module)
|
|
if state == 'absent':
|
|
if existing:
|
|
commands = ['no vlan ' + vlan_id]
|
|
elif state == 'present':
|
|
if (existing.get('mapped_vni') == '0' and
|
|
proposed.get('mapped_vni') == 'default'):
|
|
proposed.pop('mapped_vni')
|
|
delta = dict(set(
|
|
proposed.iteritems()).difference(existing.iteritems()))
|
|
if delta or not existing:
|
|
commands = get_vlan_config_commands(delta, vlan_id)
|
|
|
|
end_state = existing
|
|
end_state_vlans_list = existing_vlans_list
|
|
|
|
if commands:
|
|
if existing:
|
|
if (existing.get('mapped_vni') != proposed.get('mapped_vni') and
|
|
existing.get('mapped_vni') != '0' and proposed.get('mapped_vni') != 'default'):
|
|
commands.insert(1, 'no vn-segment')
|
|
if module.check_mode:
|
|
module.exit_json(changed=True,
|
|
commands=commands)
|
|
else:
|
|
execute_config_command(commands, module)
|
|
changed = True
|
|
end_state_vlans_list = numerical_sort(get_list_of_vlans(module))
|
|
if vlan_id:
|
|
end_state = get_vlan(vlan_id, module)
|
|
|
|
results = {}
|
|
results['proposed_vlans_list'] = proposed_vlans_list
|
|
results['existing_vlans_list'] = existing_vlans_list
|
|
results['proposed'] = proposed
|
|
results['existing'] = existing
|
|
results['end_state'] = end_state
|
|
results['end_state_vlans_list'] = end_state_vlans_list
|
|
results['updates'] = commands
|
|
results['changed'] = changed
|
|
|
|
module.exit_json(**results)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
main()
|