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#!/usr/bin/python
#
# (c) 2015 Peter Sprygada, <psprygada@ansible.com>
# Copyright (c) 2017 Dell Inc.
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
from __future__ import absolute_import, division, print_function
__metaclass__ = type
ANSIBLE_METADATA = {'metadata_version': '1.1',
'status': ['preview'],
'supported_by': 'community'}
DOCUMENTATION = """
---
module: dellos10_command
version_added: "2.2"
author: "Senthil Kumar Ganesan (@skg-net)"
short_description: Run commands on remote devices running Dell OS10
description:
- Sends arbitrary commands to a Dell OS10 node and returns the results
read from the device. This module includes an
argument that will cause the module to wait for a specific condition
before returning or timing out if the condition is not met.
- This module does not support running commands in configuration mode.
Please use M(dellos10_config) to configure Dell OS10 devices.
extends_documentation_fragment: dellos10
options:
commands:
description:
- List of commands to send to the remote dellos10 device over the
configured provider. The resulting output from the command
is returned. If the I(wait_for) argument is provided, the
module is not returned until the condition is satisfied or
the number of retries has expired.
required: true
wait_for:
description:
- List of conditions to evaluate against the output of the
command. The task will wait for each condition to be true
before moving forward. If the conditional is not true
within the configured number of I(retries), the task fails.
See examples.
required: false
default: null
retries:
description:
- Specifies the number of retries a command should by tried
before it is considered failed. The command is run on the
target device every retry and evaluated against the
I(wait_for) conditions.
required: false
default: 10
interval:
description:
- Configures the interval in seconds to wait between retries
of the command. If the command does not pass the specified
conditions, the interval indicates how long to wait before
trying the command again.
required: false
default: 1
"""
EXAMPLES = """
# Note: examples below use the following provider dict to handle
# transport and authentication to the node.
vars:
cli:
host: "{{ inventory_hostname }}"
username: admin
password: admin
transport: cli
tasks:
- name: run show version on remote devices
dellos10_command:
commands: show version
provider: "{{ cli }}"
- name: run show version and check to see if output contains OS10
dellos10_command:
commands: show version
wait_for: result[0] contains OS10
provider: "{{ cli }}"
- name: run multiple commands on remote nodes
dellos10_command:
commands:
- show version
- show interface
provider: "{{ cli }}"
- name: run multiple commands and evaluate the output
dellos10_command:
commands:
- show version
- show interface
wait_for:
- result[0] contains OS10
- result[1] contains Ethernet
provider: "{{ cli }}"
"""
RETURN = """
stdout:
description: The set of responses from the commands
returned: always apart from low level errors (such as action plugin)
type: list
sample: ['...', '...']
stdout_lines:
description: The value of stdout split into a list
returned: always apart from low level errors (such as action plugin)
type: list
sample: [['...', '...'], ['...'], ['...']]
failed_conditions:
description: The list of conditionals that have failed
returned: failed
type: list
sample: ['...', '...']
warnings:
description: The list of warnings (if any) generated by module based on arguments
returned: always
type: list
sample: ['...', '...']
"""
import time
from ansible.module_utils.basic import AnsibleModule
from ansible.module_utils.network.dellos10.dellos10 import run_commands
from ansible.module_utils.network.dellos10.dellos10 import dellos10_argument_spec, check_args
from ansible.module_utils.network.common.utils import ComplexList
from ansible.module_utils.network.common.parsing import Conditional
from ansible.module_utils.six import string_types
def to_lines(stdout):
for item in stdout:
if isinstance(item, string_types):
item = str(item).split('\n')
yield item
def parse_commands(module, warnings):
command = ComplexList(dict(
command=dict(key=True),
prompt=dict(),
answer=dict()
), module)
commands = command(module.params['commands'])
for index, item in enumerate(commands):
if module.check_mode and not item['command'].startswith('show'):
warnings.append(
'only show commands are supported when using check mode, not '
'executing `%s`' % item['command']
)
elif item['command'].startswith('conf'):
module.fail_json(
msg='dellos10_command does not support running config mode '
'commands. Please use dellos10_config instead'
)
return commands
def main():
"""main entry point for module execution
"""
argument_spec = dict(
# { command: <str>, prompt: <str>, response: <str> }
commands=dict(type='list', required=True),
wait_for=dict(type='list'),
match=dict(default='all', choices=['all', 'any']),
retries=dict(default=10, type='int'),
interval=dict(default=1, type='int')
)
argument_spec.update(dellos10_argument_spec)
module = AnsibleModule(argument_spec=argument_spec,
supports_check_mode=True)
result = {'changed': False}
warnings = list()
check_args(module, warnings)
commands = parse_commands(module, warnings)
result['warnings'] = warnings
wait_for = module.params['wait_for'] or list()
conditionals = [Conditional(c) for c in wait_for]
retries = module.params['retries']
interval = module.params['interval']
match = module.params['match']
while retries > 0:
responses = run_commands(module, commands)
for item in list(conditionals):
if item(responses):
if match == 'any':
conditionals = list()
break
conditionals.remove(item)
if not conditionals:
break
time.sleep(interval)
retries -= 1
if conditionals:
failed_conditions = [item.raw for item in conditionals]
msg = 'One or more conditional statements have not be satisfied'
module.fail_json(msg=msg, failed_conditions=failed_conditions)
result = {
'changed': False,
'stdout': responses,
'stdout_lines': list(to_lines(responses))
}
module.exit_json(**result)
if __name__ == '__main__':
main()
|
