1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
|
#!/usr/bin/python
# -*- coding: utf-8 -*-
# Copyright: (c) 2015, Peter Sprygada <psprygada@ansible.com>
# Copyright: (c) 2016, 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: dellos9_command
version_added: "2.2"
author: "Dhivya P (@dhivyap)"
short_description: Run commands on remote devices running Dell OS9
description:
- Sends arbitrary commands to a Dell OS9 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(dellos9_config) to configure Dell OS9 devices.
extends_documentation_fragment: dellos9
options:
commands:
description:
- List of commands to send to the remote dellos9 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. If a command sent to the
device requires answering a prompt, it is possible to pass
a dict containing I(command), I(answer) and I(prompt).
Common answers are 'yes' or "\\r" (carriage return, must be
double quotes). See examples.
type: list
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 retries, the task fails.
See examples.
type: list
version_added: "2.2"
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 wait_for must be satisfied. If
the value is set to C(any) then only one of the values must be
satisfied.
type: str
default: all
choices: [ 'all', 'any' ]
version_added: "2.5"
retries:
description:
- Specifies the number of retries a command should be tried
before it is considered failed. The command is run on the
target device every retry and evaluated against the
I(wait_for) conditions.
type: int
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.
type: int
default: 1
notes:
- This module requires Dell OS9 version 9.10.0.1P13 or above.
- This module requires to increase the ssh connection rate limit.
Use the following command I(ip ssh connection-rate-limit 60)
to configure the same. This can be done via M(dellos9_config) module
as well.
"""
EXAMPLES = """
tasks:
- name: run show version on remote devices
dellos9_command:
commands: show version
- name: run show version and check to see if output contains OS9
dellos9_command:
commands: show version
wait_for: result[0] contains OS9
- name: run multiple commands on remote nodes
dellos9_command:
commands:
- show version
- show interfaces
- name: run multiple commands and evaluate the output
dellos9_command:
commands:
- show version
- show interfaces
wait_for:
- result[0] contains OS9
- result[1] contains Loopback
- name: run commands that require answering a prompt
dellos9_command:
commands:
- command: 'copy running-config startup-config'
prompt: '[confirm yes/no]: ?$'
answer: 'yes'
"""
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._text import to_text
from ansible.module_utils.basic import AnsibleModule
from ansible.module_utils.network.common.parsing import Conditional
from ansible.module_utils.network.common.utils import transform_commands, to_lines
from ansible.module_utils.network.dellos9.dellos9 import run_commands
from ansible.module_utils.network.dellos9.dellos9 import dellos9_argument_spec, check_args
def parse_commands(module, warnings):
commands = transform_commands(module)
if module.check_mode:
for item in list(commands):
if not item['command'].startswith('show'):
warnings.append(
'Only show commands are supported when using check mode, not '
'executing %s' % item['command']
)
commands.remove(item)
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(dellos9_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_text(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': list(to_lines(responses))
})
module.exit_json(**result)
if __name__ == '__main__':
main()
|
