pn_vlag (New Module) (#4731)
* added Py2.4 and YAML Documentation fixes * added no_log for password * incorporated additional review comments * remove type for options block
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amitsi
Matt Clay
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1 changed files with 342 additions and 0 deletions
342
lib/ansible/modules/network/netvisor/pn_vlag.py
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342
lib/ansible/modules/network/netvisor/pn_vlag.py
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#!/usr/bin/python
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""" PN CLI vlag-create/vlag-delete/vlag-modify """
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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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import shlex
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DOCUMENTATION = """
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---
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module: pn_vlag
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author: "Pluribus Networks (@amitsi)"
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version_added: "2.2"
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version: 1.0
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short_description: CLI command to create/delete/modify vlag.
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description:
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- Execute vlag-create/vlag-delete/vlag-modify command.
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- A virtual link aggregation group (VLAG) allows links that are physically
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connected to two different Pluribus Networks devices to appear as a single
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trunk to a third device. The third device can be a switch, server, or any
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Ethernet device. A VLAG can provide Layer 2 multipathing, which allows you
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to create redundancy by increasing bandwidth, enabling multiple parallel
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paths between nodes and loadbalancing traffic where alternative paths exist.
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options:
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pn_cliusername:
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description:
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- Provide login username if user is not root.
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required: False
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pn_clipassword:
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description:
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- Provide login password if user is not root.
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required: False
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pn_cliswitch:
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description:
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- Target switch(es) to run this command on.
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state:
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description:
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- State the action to perform. Use 'present' to create vlag,
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'absent' to delete vlag and 'update' to modify vlag.
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required: True
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choices: ['present', 'absent', 'update']
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pn_name:
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description:
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- The C(pn_name) takes a valid name for vlag configuration.
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required: true
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pn_port:
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description:
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- Specify the local VLAG port.
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- Required for vlag-create.
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pn_peer_port:
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description:
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- Specify the peer VLAG port.
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- Required for vlag-create.
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pn_mode:
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description:
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- Specify the mode for the VLAG. Active-standby indicates one side is
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active and the other side is in standby mode. Active-active indicates
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that both sides of the vlag are up by default.
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choices: ['active-active', 'active-standby']
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pn_peer_switch:
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description:
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- Specify the fabric-name of the peer switch.
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pn_failover_action:
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description:
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- Specify the failover action as move or ignore.
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choices: ['move', 'ignore']
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pn_lacp_mode:
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description:
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- Specify the LACP mode.
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choices: ['off', 'passive', 'active']
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pn_lacp_timeout:
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description:
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- Specify the LACP timeout as slow(30 seconds) or fast(4 seconds).
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choices: ['slow', 'fast']
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pn_lacp_fallback:
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description:
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- Specify the LACP fallback mode as bundles or individual.
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choices: ['bundle', 'individual']
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pn_lacp_fallback_timeout:
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description:
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- Specify the LACP fallback timeout in seconds. The range is between 30
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and 60 seconds with a default value of 50 seconds.
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"""
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EXAMPLES = """
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- name: create a VLAG
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pn_vlag:
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state: 'present'
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pn_name: spine-to-leaf
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pn_port: 'spine01-to-leaf'
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pn_peer_port: 'spine02-to-leaf'
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pn_peer_switch: spine02
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pn_mode: 'active-active'
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- name: delete VLAGs
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pn_vlag:
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state: 'absent'
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pn_name: spine-to-leaf
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"""
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RETURN = """
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command:
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description: The CLI command run on the target node(s).
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stdout:
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description: The set of responses from the vlag command.
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returned: always
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type: list
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stderr:
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description: The set of error responses from the vlag command.
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returned: on error
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type: list
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changed:
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description: Indicates whether the CLI caused changes on the target.
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returned: always
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type: bool
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"""
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VLAG_EXISTS = None
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def pn_cli(module):
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"""
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This method is to generate the cli portion to launch the Netvisor cli.
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It parses the username, password, switch parameters from module.
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:param module: The Ansible module to fetch username, password and switch
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:return: returns the cli string for further processing
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"""
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username = module.params['pn_cliusername']
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password = module.params['pn_clipassword']
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cliswitch = module.params['pn_cliswitch']
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if username and password:
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cli = '/usr/bin/cli --quiet --user %s:%s ' % (username, password)
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else:
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cli = '/usr/bin/cli --quiet '
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if cliswitch == 'local':
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cli += ' switch-local '
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else:
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cli += ' switch ' + cliswitch
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return cli
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def check_cli(module, cli):
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"""
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This method checks for idempotency using the vlag-show command.
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If a vlag with given vlag exists, return VLAG_EXISTS as True else False.
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:param module: The Ansible module to fetch input parameters
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:param cli: The CLI string
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:return Global Booleans: VLAG_EXISTS
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"""
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name = module.params['pn_name']
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show = cli + ' vlag-show format name no-show-headers'
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show = shlex.split(show)
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out = module.run_command(show)[1]
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out = out.split()
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# Global flags
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global VLAG_EXISTS
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if name in out:
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VLAG_EXISTS = True
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else:
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VLAG_EXISTS = False
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def run_cli(module, cli):
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"""
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This method executes the cli command on the target node(s) and returns the
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output. The module then exits based on the output.
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:param cli: the complete cli string to be executed on the target node(s).
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:param module: The Ansible module to fetch command
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"""
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cliswitch = module.params['pn_cliswitch']
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state = module.params['state']
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command = get_command_from_state(state)
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cmd = shlex.split(cli)
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# 'out' contains the output
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# 'err' contains the error messages
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result, out, err = module.run_command(cmd)
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print_cli = cli.split(cliswitch)[1]
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# Response in JSON format
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if result != 0:
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module.exit_json(
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command=print_cli,
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stderr=err.strip(),
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msg="%s operation failed" % command,
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changed=False
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)
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if out:
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module.exit_json(
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command=print_cli,
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stdout=out.strip(),
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msg="%s operation completed" % command,
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changed=True
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)
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else:
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module.exit_json(
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command=print_cli,
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msg="%s operation completed" % command,
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changed=True
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)
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def get_command_from_state(state):
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"""
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This method gets appropriate command name for the state specified. It
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returns the command name for the specified state.
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:param state: The state for which the respective command name is required.
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"""
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command = None
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if state == 'present':
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command = 'vlag-create'
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if state == 'absent':
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command = 'vlag-delete'
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if state == 'update':
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command = 'vlag-modify'
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return command
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def main():
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""" This section is for argument parsing """
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module = AnsibleModule(
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argument_spec=dict(
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pn_cliusername=dict(required=False, type='str'),
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pn_clipassword=dict(required=False, type='str', no_log=True),
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pn_cliswitch=dict(required=False, type='str', default='local'),
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state =dict(required=True, type='str',
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choices=['present', 'absent', 'update']),
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pn_name=dict(required=True, type='str'),
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pn_port=dict(type='str'),
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pn_peer_port=dict(type='str'),
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pn_mode=dict(type='str', choices=[
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'active-standby', 'active-active']),
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pn_peer_switch=dict(type='str'),
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pn_failover_action=dict(type='str', choices=['move', 'ignore']),
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pn_lacp_mode=dict(type='str', choices=[
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'off', 'passive', 'active']),
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pn_lacp_timeout=dict(type='str', choices=['slow', 'fast']),
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pn_lacp_fallback=dict(type='str', choices=[
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'individual', 'bundled']),
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pn_lacp_fallback_timeout=dict(type='str')
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),
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required_if=(
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["state", "present", ["pn_name", "pn_port", "pn_peer_port",
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"pn_peer_switch"]],
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["state", "absent", ["pn_name"]],
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["state", "update", ["pn_name"]]
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)
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)
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# Argument accessing
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state = module.params['state']
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name = module.params['pn_name']
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port = module.params['pn_port']
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peer_port = module.params['pn_peer_port']
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mode = module.params['pn_mode']
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peer_switch = module.params['pn_peer_switch']
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failover_action = module.params['pn_failover_action']
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lacp_mode = module.params['pn_lacp_mode']
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lacp_timeout = module.params['pn_lacp_timeout']
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lacp_fallback = module.params['pn_lacp_fallback']
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lacp_fallback_timeout = module.params['pn_lacp_fallback_timeout']
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command = get_command_from_state(state)
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# Building the CLI command string
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cli = pn_cli(module)
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if command == 'vlag-delete':
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check_cli(module, cli)
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if VLAG_EXISTS is False:
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module.exit_json(
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skipped=True,
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msg='VLAG with name %s does not exist' % name
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)
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cli += ' %s name %s ' % (command, name)
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else:
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if command == 'vlag-create':
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check_cli(module, cli)
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if VLAG_EXISTS is True:
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module.exit_json(
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skipped=True,
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msg='VLAG with name %s already exists' % name
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)
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cli += ' %s name %s ' % (command, name)
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if port:
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cli += ' port %s peer-port %s ' % (port, peer_port)
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if mode:
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cli += ' mode ' + mode
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if peer_switch:
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cli += ' peer-switch ' + peer_switch
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if failover_action:
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cli += ' failover-' + failover_action + '-L2 '
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if lacp_mode:
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cli += ' lacp-mode ' + lacp_mode
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if lacp_timeout:
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cli += ' lacp-timeout ' + lacp_timeout
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if lacp_fallback:
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cli += ' lacp-fallback ' + lacp_fallback
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if lacp_fallback_timeout:
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cli += ' lacp-fallback-timeout ' + lacp_fallback_timeout
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run_cli(module, cli)
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# AnsibleModule boilerplate
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from ansible.module_utils.basic import AnsibleModule
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if __name__ == '__main__':
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main()
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