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|
#!/usr/bin/python
#
# This file is part of Ansible
#
# Ansible is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
#
DOCUMENTATION = '''
---
module: nxos_vpc_interface
version_added: "2.2"
short_description: Manages interface VPC configuration
description:
- Manages interface VPC configuration
extends_documentation_fragment: nxos
author:
- Jason Edelman (@jedelman8)
- Gabriele Gerbino (@GGabriele)
notes:
- Either vpc or peer_link param is required, but not both.
- C(state=absent) removes whatever VPC config is on a port-channel
if one exists.
- Re-assigning a vpc or peerlink from one portchannel to another is not
supported. The module will force the user to unconfigure an existing
vpc/pl before configuring the same value on a new portchannel
options:
portchannel:
description:
- Group number of the portchannel that will be configured.
required: true
vpc:
description:
- VPC group/id that will be configured on associated portchannel.
required: false
default: null
peer_link:
description:
- Set to true/false for peer link config on associated portchannel.
required: false
default: null
state:
description:
- Manages desired state of the resource.
required: true
choices: ['present','absent']
'''
EXAMPLES = '''
- nxos_vpc_interface:
portchannel: 10
vpc: 100
username: "{{ un }}"
password: "{{ pwd }}"
host: "{{ inventory_hostname }}"
'''
RETURN = '''
proposed:
description: k/v pairs of parameters passed into module
returned: always
type: dict
sample: {"portchannel": "100", "vpc": "10"}
existing:
description: k/v pairs of existing configuration
type: dict
sample: {}
end_state:
description: k/v pairs of configuration after module execution
returned: always
type: dict
sample: {"peer-link": false, "portchannel": "100", "vpc": "10"}
updates:
description: commands sent to the device
returned: always
type: list
sample: ["interface port-channel100", "vpc 10"]
changed:
description: check to see if a change was made on the device
returned: always
type: boolean
sample: true
'''
import collections
import json
# COMMON CODE FOR MIGRATION
import re
from ansible.module_utils.basic import get_exception
from ansible.module_utils.netcfg import NetworkConfig, ConfigLine
from ansible.module_utils.shell import ShellError
try:
from ansible.module_utils.nxos import get_module
except ImportError:
from ansible.module_utils.nxos import NetworkModule, NetworkError
def to_list(val):
if isinstance(val, (list, tuple)):
return list(val)
elif val is not None:
return [val]
else:
return list()
class CustomNetworkConfig(NetworkConfig):
def expand_section(self, configobj, S=None):
if S is None:
S = list()
S.append(configobj)
for child in configobj.children:
if child in S:
continue
self.expand_section(child, S)
return S
def get_object(self, path):
for item in self.items:
if item.text == path[-1]:
parents = [p.text for p in item.parents]
if parents == path[:-1]:
return item
def to_block(self, section):
return '\n'.join([item.raw for item in section])
def get_section(self, path):
try:
section = self.get_section_objects(path)
return self.to_block(section)
except ValueError:
return list()
def get_section_objects(self, path):
if not isinstance(path, list):
path = [path]
obj = self.get_object(path)
if not obj:
raise ValueError('path does not exist in config')
return self.expand_section(obj)
def add(self, lines, parents=None):
"""Adds one or lines of configuration
"""
ancestors = list()
offset = 0
obj = None
## global config command
if not parents:
for line in to_list(lines):
item = ConfigLine(line)
item.raw = line
if item not in self.items:
self.items.append(item)
else:
for index, p in enumerate(parents):
try:
i = index + 1
obj = self.get_section_objects(parents[:i])[0]
ancestors.append(obj)
except ValueError:
# add parent to config
offset = index * self.indent
obj = ConfigLine(p)
obj.raw = p.rjust(len(p) + offset)
if ancestors:
obj.parents = list(ancestors)
ancestors[-1].children.append(obj)
self.items.append(obj)
ancestors.append(obj)
# add child objects
for line in to_list(lines):
# check if child already exists
for child in ancestors[-1].children:
if child.text == line:
break
else:
offset = len(parents) * self.indent
item = ConfigLine(line)
item.raw = line.rjust(len(line) + offset)
item.parents = ancestors
ancestors[-1].children.append(item)
self.items.append(item)
def get_network_module(**kwargs):
try:
return get_module(**kwargs)
except NameError:
return NetworkModule(**kwargs)
def get_config(module, include_defaults=False):
config = module.params['config']
if not config:
try:
config = module.get_config()
except AttributeError:
defaults = module.params['include_defaults']
config = module.config.get_config(include_defaults=defaults)
return CustomNetworkConfig(indent=2, contents=config)
def load_config(module, candidate):
config = get_config(module)
commands = candidate.difference(config)
commands = [str(c).strip() for c in commands]
save_config = module.params['save']
result = dict(changed=False)
if commands:
if not module.check_mode:
try:
module.configure(commands)
except AttributeError:
module.config(commands)
if save_config:
try:
module.config.save_config()
except AttributeError:
module.execute(['copy running-config startup-config'])
result['changed'] = True
result['updates'] = commands
return result
# END OF COMMON CODE
def execute_config_command(commands, module):
try:
response = module.configure(commands)
except ShellError:
clie = get_exception()
module.fail_json(msg='Error sending CLI commands',
error=str(clie), commands=commands)
except AttributeError:
try:
module.config.load_config(commands)
except NetworkError:
clie = get_exception()
module.fail_json(msg='Error sending CLI commands',
error=str(clie), commands=commands)
return response
def get_cli_body_ssh(command, response, module):
"""Get response for when transport=cli. This is kind of a hack and mainly
needed because these modules were originally written for NX-API. And
not every command supports "| json" when using cli/ssh.
"""
if '^' == response[0]:
body = []
elif 'running' in command or 'xml' in response[0]:
body = response
else:
try:
body = [json.loads(response[0])]
except ValueError:
module.fail_json(msg='Command does not support JSON output',
command=command)
return body
def execute_show(cmds, module, command_type=None):
command_type_map = {
'cli_show': 'json',
'cli_show_ascii': 'text'
}
try:
if command_type:
response = module.execute(cmds, command_type=command_type)
else:
response = module.execute(cmds)
except ShellError:
clie = get_exception()
module.fail_json(msg='Error sending {0}'.format(cmds),
error=str(clie))
except AttributeError:
try:
if command_type:
command_type = command_type_map.get(command_type)
module.cli.add_commands(cmds, output=command_type)
response = module.cli.run_commands()
else:
module.cli.add_commands(cmds, raw=True)
response = module.cli.run_commands()
except NetworkError:
clie = get_exception()
module.fail_json(msg='Error sending {0}'.format(cmds),
error=str(clie))
return response
def execute_show_command(command, module, command_type='cli_show'):
if module.params['transport'] == 'cli':
command += ' | json'
cmds = [command]
response = execute_show(cmds, module)
body = get_cli_body_ssh(command, response, module)
elif module.params['transport'] == 'nxapi':
cmds = [command]
body = execute_show(cmds, module, command_type=command_type)
return body
def flatten_list(command_lists):
flat_command_list = []
for command in command_lists:
if isinstance(command, list):
flat_command_list.extend(command)
else:
flat_command_list.append(command)
return flat_command_list
def get_portchannel_list(module):
command = 'show port-channel summary'
portchannels = []
pc_list = []
body = execute_show_command(command, module)
try:
pc_list = body[0]['TABLE_channel']['ROW_channel']
except (KeyError, AttributeError):
return portchannels
if pc_list:
if isinstance(pc_list, dict):
pc_list = [pc_list]
for pc in pc_list:
portchannels.append(pc['group'])
return portchannels
def get_existing_portchannel_to_vpc_mappings(module):
command = 'show vpc brief'
pc_vpc_mapping = {}
body = execute_show_command(command, module)
try:
vpc_table = body[0]['TABLE_vpc']['ROW_vpc']
except (KeyError, AttributeError, TypeError):
vpc_table = None
if vpc_table:
if isinstance(vpc_table, dict):
vpc_table = [vpc_table]
for vpc in vpc_table:
pc_vpc_mapping[str(vpc['vpc-id'])] = str(vpc['vpc-ifindex'])
return pc_vpc_mapping
def peer_link_exists(module):
found = False
run = get_vpc_running_config(module)
vpc_list = run.split('\n')
for each in vpc_list:
if 'peer-link' in each:
found = True
return found
def get_vpc_running_config(module):
command = 'show running section vpc'
body = execute_show_command(command, module,
command_type='cli_show_ascii')[0]
return body
def get_active_vpc_peer_link(module):
command = 'show vpc brief'
peer_link = None
body = execute_show_command(command, module)
try:
peer_link = body[0]['TABLE_peerlink']['ROW_peerlink']['peerlink-ifindex']
except (KeyError, AttributeError):
return peer_link
return peer_link
def get_portchannel_vpc_config(module, portchannel):
command = 'show vpc brief'
peer_link_pc = None
peer_link = False
vpc = ""
pc = ""
config = {}
body = execute_show_command(command, module)
try:
table = body[0]['TABLE_peerlink']['ROW_peerlink']
except (KeyError, AttributeError, TypeError):
table = {}
if table:
peer_link_pc = table.get('peerlink-ifindex', None)
if peer_link_pc:
plpc = str(peer_link_pc[2:])
if portchannel == plpc:
config['portchannel'] = portchannel
config['peer-link'] = True
config['vpc'] = vpc
mapping = get_existing_portchannel_to_vpc_mappings(module)
for existing_vpc, port_channel in mapping.items():
port_ch = str(port_channel[2:])
if port_ch == portchannel:
pc = port_ch
vpc = str(existing_vpc)
config['portchannel'] = pc
config['peer-link'] = peer_link
config['vpc'] = vpc
return config
def get_commands_to_config_vpc_interface(portchannel, delta, config_value, existing):
commands = []
if delta.get('peer-link') is False and existing.get('peer-link') is True:
command = 'no vpc peer-link'
commands.append('no vpc peer-link')
commands.insert(0, 'interface port-channel{0}'.format(portchannel))
elif delta.get('peer-link') or not existing.get('vpc'):
command = 'vpc {0}'.format(config_value)
commands.append(command)
commands.insert(0, 'interface port-channel{0}'.format(portchannel))
return commands
def main():
argument_spec = dict(
portchannel=dict(required=True, type='str'),
vpc=dict(required=False, type='str'),
peer_link=dict(required=False, type='bool'),
state=dict(choices=['absent', 'present'], default='present'),
include_defaults=dict(default=False),
config=dict(),
save=dict(type='bool', default=False)
)
module = get_network_module(argument_spec=argument_spec,
mutually_exclusive=[['vpc', 'peer_link']],
supports_check_mode=True)
portchannel = module.params['portchannel']
vpc = module.params['vpc']
peer_link = module.params['peer_link']
state = module.params['state']
changed = False
args = {'portchannel': portchannel, 'vpc': vpc, 'peer-link': peer_link}
active_peer_link = None
if portchannel not in get_portchannel_list(module):
module.fail_json(msg="The portchannel you are trying to make a"
" VPC or PL is not created yet. "
"Create it first!")
if vpc:
mapping = get_existing_portchannel_to_vpc_mappings(module)
if vpc in mapping.keys() and portchannel != mapping[vpc].strip('Po'):
module.fail_json(msg="This vpc is already configured on "
"another portchannel. Remove it first "
"before trying to assign it here. ",
existing_portchannel=mapping[vpc])
for vpcid, existing_pc in mapping.items():
if portchannel == existing_pc.strip('Po') and vpcid != vpc:
module.fail_json(msg="This portchannel already has another"
" VPC configured. Remove it first "
"before assigning this one",
existing_vpc=vpcid)
if peer_link_exists(module):
active_peer_link = get_active_vpc_peer_link(module)
if active_peer_link[-2:] == portchannel:
module.fail_json(msg="That port channel is the current "
"PEER LINK. Remove it if you want it"
" to be a VPC")
config_value = vpc
elif peer_link is not None:
if peer_link_exists(module):
active_peer_link = get_active_vpc_peer_link(module)[2::]
if active_peer_link != portchannel:
if peer_link:
module.fail_json(msg="A peer link already exists on"
" the device. Remove it first",
current_peer_link='Po{0}'.format(
active_peer_link))
config_value = 'peer-link'
proposed = dict((k, v) for k, v in args.items() if v is not None)
existing = get_portchannel_vpc_config(module, portchannel)
end_state = existing
commands = []
if state == 'present':
delta = dict(set(proposed.items()).difference(existing.items()))
if delta:
command = get_commands_to_config_vpc_interface(
portchannel,
delta,
config_value,
existing
)
commands.append(command)
elif state == 'absent':
if existing.get('vpc'):
command = ['no vpc']
commands.append(command)
elif existing.get('peer-link'):
command = ['no vpc peer-link']
commands.append(command)
if commands:
commands.insert(0, ['interface port-channel{0}'.format(portchannel)])
cmds = flatten_list(commands)
if cmds:
if module.check_mode:
module.exit_json(changed=True, commands=cmds)
else:
changed = True
output = execute_config_command(cmds, module)
if module.params['transport'] == 'cli':
output = ' '.join(output)
if 'error' in output.lower():
module.fail_json(msg=output.replace('\n', ''))
end_state = get_portchannel_vpc_config(module, portchannel)
results = {}
results['proposed'] = proposed
results['existing'] = existing
results['end_state'] = end_state
results['updates'] = cmds
results['changed'] = changed
module.exit_json(**results)
if __name__ == '__main__':
main()
|