pn_vrouterlbif (New Module) (#4735)
* 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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commit
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1 changed files with 324 additions and 0 deletions
324
lib/ansible/modules/network/netvisor/pn_vrouterlbif.py
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lib/ansible/modules/network/netvisor/pn_vrouterlbif.py
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#!/usr/bin/python
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""" PN CLI vrouter-loopback-interface-add/remove """
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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_vrouterlbif
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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 add/remove vrouter-loopback-interface.
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description:
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- Execute vrouter-loopback-interface-add, vrouter-loopback-interface-remove
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commands.
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- Each fabric, cluster, standalone switch, or virtual network (VNET) can
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provide its tenants with a virtual router (vRouter) service that forwards
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traffic between networks and implements Layer 3 protocols.
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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 the cli on.
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required: False
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state:
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description:
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- State the action to perform. Use 'present' to add vrouter loopback
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interface and 'absent' to remove vrouter loopback interface.
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required: True
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choices: ['present', 'absent']
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pn_vrouter_name:
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description:
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- Specify the name of the vRouter.
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required: True
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pn_index:
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description:
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- Specify the interface index from 1 to 255.
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pn_interface_ip:
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description:
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- Specify the IP address.
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required: True
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"""
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EXAMPLES = """
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- name: add vrouter-loopback-interface
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pn_vrouterlbif:
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state: 'present'
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pn_vrouter_name: 'ansible-vrouter'
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pn_interface_ip: '104.104.104.1'
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- name: remove vrouter-loopback-interface
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pn_vrouterlbif:
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state: 'absent'
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pn_vrouter_name: 'ansible-vrouter'
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pn_interface_ip: '104.104.104.1'
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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 vrouterlb 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 vrouterlb 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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VROUTER_EXISTS = None
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LB_INTERFACE_EXISTS = None
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# Index range
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MIN_INDEX = 1
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MAX_INDEX = 255
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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 if vRouter exists on the target node.
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This method also checks for idempotency using the
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vrouter-loopback-interface-show command.
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If the given vRouter exists, return VROUTER_EXISTS as True else False.
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If a loopback interface with the given ip exists on the given vRouter,
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return LB_INTERFACE_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: VROUTER_EXISTS, LB_INTERFACE_EXISTS
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"""
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vrouter_name = module.params['pn_vrouter_name']
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interface_ip = module.params['pn_interface_ip']
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# Global flags
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global VROUTER_EXISTS, LB_INTERFACE_EXISTS
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# Check for vRouter
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check_vrouter = cli + ' vrouter-show format name no-show-headers '
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check_vrouter = shlex.split(check_vrouter)
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out = module.run_command(check_vrouter)[1]
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out = out.split()
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if vrouter_name in out:
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VROUTER_EXISTS = True
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else:
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VROUTER_EXISTS = False
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# Check for loopback interface
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show = (cli + ' vrouter-loopback-interface-show vrouter-name %s format ip '
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'no-show-headers' % vrouter_name)
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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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if interface_ip in out:
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LB_INTERFACE_EXISTS = True
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else:
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LB_INTERFACE_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 = 'vrouter-loopback-interface-add'
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if state == 'absent':
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command = 'vrouter-loopback-interface-remove'
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return command
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def main():
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""" This portion is for arguments 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']),
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pn_vrouter_name=dict(required=True, type='str'),
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pn_interface_ip=dict(type='str'),
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pn_index=dict(type='int')
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),
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required_if=(
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["state", "present",
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["pn_vrouter_name", "pn_interface_ip"]],
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["state", "absent",
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["pn_vrouter_name", "pn_interface_ip"]]
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)
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)
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# Accessing the arguments
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state = module.params['state']
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vrouter_name = module.params['pn_vrouter_name']
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interface_ip = module.params['pn_interface_ip']
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index = module.params['pn_index']
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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 index:
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if not MIN_INDEX <= index <= MAX_INDEX:
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module.exit_json(
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msg="Index must be between 1 and 255",
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changed=False
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)
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index = str(index)
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if command == 'vrouter-loopback-interface-remove':
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check_cli(module, cli)
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if VROUTER_EXISTS is False:
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module.exit_json(
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skipped=True,
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msg='vRouter %s does not exist' % vrouter_name
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)
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if LB_INTERFACE_EXISTS is False:
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module.exit_json(
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skipped=True,
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msg=('Loopback interface with IP %s does not exist on %s'
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% (interface_ip, vrouter_name))
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)
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if not index:
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# To remove loopback interface, we need the index.
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# If index is not specified, get the Loopback interface index
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# using the given interface ip.
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get_index = cli
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get_index += (' vrouter-loopback-interface-show vrouter-name %s ip '
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'%s ' % (vrouter_name, interface_ip))
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get_index += 'format index no-show-headers'
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get_index = shlex.split(get_index)
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out = module.run_command(get_index)[1]
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index = out.split()[1]
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cli += ' %s vrouter-name %s index %s' % (command, vrouter_name, index)
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if command == 'vrouter-loopback-interface-add':
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check_cli(module, cli)
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if VROUTER_EXISTS is False:
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module.exit_json(
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skipped=True,
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msg=('vRouter %s does not exist' % vrouter_name)
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)
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if LB_INTERFACE_EXISTS is True:
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module.exit_json(
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skipped=True,
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msg=('Loopback interface with IP %s already exists on %s'
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% (interface_ip, vrouter_name))
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)
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cli += (' %s vrouter-name %s ip %s'
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% (command, vrouter_name, interface_ip))
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if index:
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cli += ' index %s ' % index
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run_cli(module, cli)
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# Ansible boiler-plate
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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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