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community.general/plugins/modules/network/cloudengine/ce_command.py

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2020-03-09 10:11:07 +01:00
#!/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/>.
#
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
ANSIBLE_METADATA = {'metadata_version': '1.1',
'status': ['preview'],
'supported_by': 'community'}
DOCUMENTATION = '''
---
module: ce_command
author: "JackyGao2016 (@CloudEngine-Ansible)"
short_description: Run arbitrary command on HUAWEI CloudEngine devices.
description:
- Sends an arbitrary command to an HUAWEI CloudEngine node and returns
the results read from the device. The ce_command 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.
notes:
- Recommended connection is C(network_cli).
- This module also works with C(local) connections for legacy playbooks.
options:
commands:
description:
- The commands to send to the remote HUAWEI CloudEngine 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 I(retries) has been exceeded.
required: true
wait_for:
description:
- Specifies what to evaluate from the output of the command
and what conditionals to apply. This argument will cause
the task to wait for a particular conditional to be true
before moving forward. If the conditional is not true
by the configured retries, the task fails. See examples.
match:
description:
- The I(match) argument is used in conjunction with the
I(wait_for) argument to specify the match policy. Valid
values are C(all) or C(any). If the value is set to C(all)
then all conditionals in the I(wait_for) must be satisfied. If
the value is set to C(any) then only one of the values must be
satisfied.
default: all
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)
conditionals.
default: 10
interval:
description:
- Configures the interval in seconds to wait between retries
of the command. If the command does not pass the specified
conditional, the interval indicates how to long to wait before
trying the command again.
default: 1
'''
EXAMPLES = """
# Note: examples below use the following provider dict to handle
# transport and authentication to the node.
- name: CloudEngine command test
hosts: cloudengine
connection: local
gather_facts: no
vars:
cli:
host: "{{ inventory_hostname }}"
port: "{{ ansible_ssh_port }}"
username: "{{ username }}"
password: "{{ password }}"
transport: cli
tasks:
- name: "Run display version on remote devices"
ce_command:
commands: display version
provider: "{{ cli }}"
- name: "Run display version and check to see if output contains HUAWEI"
ce_command:
commands: display version
wait_for: result[0] contains HUAWEI
provider: "{{ cli }}"
- name: "Run multiple commands on remote nodes"
ce_command:
commands:
- display version
- display device
provider: "{{ cli }}"
- name: "Run multiple commands and evaluate the output"
ce_command:
commands:
- display version
- display device
wait_for:
- result[0] contains HUAWEI
- result[1] contains Device
provider: "{{ cli }}"
"""
RETURN = """
stdout:
description: the set of responses from the commands
returned: always
type: list
sample: ['...', '...']
stdout_lines:
description: The value of stdout split into a list
returned: always
type: list
sample: [['...', '...'], ['...'], ['...']]
failed_conditions:
description: the conditionals that failed
returned: failed
type: list
sample: ['...', '...']
"""
import time
import traceback
from ansible.module_utils.basic import AnsibleModule
from ansible_collections.community.general.plugins.module_utils.network.cloudengine.ce import ce_argument_spec, check_args
from ansible_collections.community.general.plugins.module_utils.network.cloudengine.ce import run_commands
from ansible_collections.ansible.netcommon.plugins.module_utils.network.common.parsing import Conditional
from ansible_collections.ansible.netcommon.plugins.module_utils.network.common.utils import ComplexList
from ansible.module_utils.six import string_types
from ansible.module_utils._text import to_native
def to_lines(stdout):
lines = list()
for item in stdout:
if isinstance(item, string_types):
item = str(item).split('\n')
lines.append(item)
return lines
def parse_commands(module, warnings):
transform = ComplexList(dict(
command=dict(key=True),
output=dict(),
prompt=dict(),
answer=dict()
), module)
commands = transform(module.params['commands'])
for _, item in enumerate(commands):
if module.check_mode and not item['command'].startswith('dis'):
warnings.append(
'Only display commands are supported when using check_mode, not '
'executing %s' % item['command']
)
return commands
def to_cli(obj):
cmd = obj['command']
return cmd
def main():
"""entry point for module execution
"""
argument_spec = dict(
# { command: <str>, output: <str>, prompt: <str>, response: <str> }
commands=dict(type='list', required=True),
wait_for=dict(type='list'),
match=dict(default='all', choices=['any', 'all']),
retries=dict(default=10, type='int'),
interval=dict(default=1, type='int')
)
argument_spec.update(ce_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()
try:
conditionals = [Conditional(c) for c in wait_for]
except AttributeError as exc:
module.fail_json(msg=to_native(exc), exception=traceback.format_exc())
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 been satisfied'
module.fail_json(msg=msg, failed_conditions=failed_conditions)
result.update({
'stdout': responses,
'stdout_lines': to_lines(responses)
})
module.exit_json(**result)
if __name__ == '__main__':
main()