239 lines
7.2 KiB
Python
239 lines
7.2 KiB
Python
#!/usr/bin/python
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#
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# (c) 2015 Peter Sprygada, <psprygada@ansible.com>
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# Copyright (c) 2016 Dell Inc.
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# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
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from __future__ import absolute_import, division, print_function
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__metaclass__ = type
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ANSIBLE_METADATA = {'status': ['preview'],
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'supported_by': 'community',
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'metadata_version': '1.0'}
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DOCUMENTATION = """
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---
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module: dellos9_command
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version_added: "2.2"
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author: "Dhivya P (@dhivyap)"
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short_description: Run commands on remote devices running Dell OS9
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description:
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- Sends arbitrary commands to a Dell OS9 node and returns the results
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read from the device. This module includes an
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argument that will cause the module to wait for a specific condition
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before returning or timing out if the condition is not met.
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- This module does not support running commands in configuration mode.
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Please use M(dellos9_config) to configure Dell OS9 devices.
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extends_documentation_fragment: dellos9
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options:
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commands:
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description:
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- List of commands to send to the remote dellos9 device over the
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configured provider. The resulting output from the command
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is returned. If the I(wait_for) argument is provided, the
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module is not returned until the condition is satisfied or
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the number of retries has expired.
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required: true
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wait_for:
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description:
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- List of conditions to evaluate against the output of the
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command. The task will wait for each condition to be true
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before moving forward. If the conditional is not true
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within the configured number of I(retries), the task fails.
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See examples.
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required: false
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default: null
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retries:
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description:
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- Specifies the number of retries a command should be tried
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before it is considered failed. The command is run on the
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target device every retry and evaluated against the
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I(wait_for) conditions.
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required: false
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default: 10
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interval:
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description:
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- Configures the interval in seconds to wait between retries
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of the command. If the command does not pass the specified
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conditions, the interval indicates how long to wait before
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trying the command again.
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required: false
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default: 1
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notes:
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- This module requires Dell OS9 version 9.10.0.1P13 or above.
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- This module requires to increase the ssh connection rate limit.
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Use the following command I(ip ssh connection-rate-limit 60)
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to configure the same. This can be done via M(dellos9_config) module
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as well.
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"""
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EXAMPLES = """
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# Note: examples below use the following provider dict to handle
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# transport and authentication to the node.
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vars:
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cli:
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host: "{{ inventory_hostname }}"
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username: admin
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password: admin
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transport: cli
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tasks:
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- name: run show version on remote devices
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dellos9_command:
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commands: show version
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provider: "{{ cli }}"
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- name: run show version and check to see if output contains OS9
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dellos9_command:
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commands: show version
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wait_for: result[0] contains OS9
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provider: "{{ cli }}"
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- name: run multiple commands on remote nodes
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dellos9_command:
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commands:
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- show version
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- show interfaces
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provider: "{{ cli }}"
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- name: run multiple commands and evaluate the output
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dellos9_command:
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commands:
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- show version
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- show interfaces
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wait_for:
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- result[0] contains OS9
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- result[1] contains Loopback
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provider: "{{ cli }}"
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"""
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RETURN = """
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stdout:
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description: The set of responses from the commands
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returned: always apart from low level errors (such as action plugin)
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type: list
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sample: ['...', '...']
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stdout_lines:
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description: The value of stdout split into a list
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returned: always apart from low level errors (such as action plugin)
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type: list
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sample: [['...', '...'], ['...'], ['...']]
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failed_conditions:
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description: The list of conditionals that have failed
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returned: failed
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type: list
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sample: ['...', '...']
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warnings:
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description: The list of warnings (if any) generated by module based on arguments
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returned: always
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type: list
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sample: ['...', '...']
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"""
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import time
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from ansible.module_utils.basic import AnsibleModule
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from ansible.module_utils.dellos9 import run_commands
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from ansible.module_utils.dellos9 import dellos9_argument_spec, check_args
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from ansible.module_utils.network_common import ComplexList
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from ansible.module_utils.netcli import Conditional
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from ansible.module_utils.six import string_types
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def to_lines(stdout):
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for item in stdout:
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if isinstance(item, string_types):
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item = str(item).split('\n')
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yield item
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def parse_commands(module, warnings):
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command = ComplexList(dict(
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command=dict(key=True),
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prompt=dict(),
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answer=dict()
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), module)
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commands = command(module.params['commands'])
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for index, item in enumerate(commands):
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if module.check_mode and not item['command'].startswith('show'):
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warnings.append(
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'only show commands are supported when using check mode, not '
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'executing `%s`' % item['command']
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)
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elif item['command'].startswith('conf'):
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module.fail_json(
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msg='dellos9_command does not support running config mode '
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'commands. Please use dellos9_config instead'
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)
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return commands
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def main():
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"""main entry point for module execution
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"""
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argument_spec = dict(
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# { command: <str>, prompt: <str>, response: <str> }
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commands=dict(type='list', required=True),
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wait_for=dict(type='list', aliases=['waitfor']),
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match=dict(default='all', choices=['all', 'any']),
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retries=dict(default=10, type='int'),
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interval=dict(default=1, type='int')
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)
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argument_spec.update(dellos9_argument_spec)
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module = AnsibleModule(argument_spec=argument_spec,
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supports_check_mode=True)
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result = {'changed': False}
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warnings = list()
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check_args(module, warnings)
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commands = parse_commands(module, warnings)
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result['warnings'] = warnings
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wait_for = module.params['wait_for'] or list()
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conditionals = [Conditional(c) for c in wait_for]
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retries = module.params['retries']
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interval = module.params['interval']
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match = module.params['match']
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while retries > 0:
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responses = run_commands(module, commands)
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for item in list(conditionals):
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if item(responses):
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if match == 'any':
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conditionals = list()
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break
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conditionals.remove(item)
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if not conditionals:
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break
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time.sleep(interval)
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retries -= 1
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if conditionals:
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failed_conditions = [item.raw for item in conditionals]
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msg = 'One or more conditional statements have not be satisfied'
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module.fail_json(msg=msg, failed_conditions=failed_conditions)
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result = {
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'changed': False,
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'stdout': responses,
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'stdout_lines': list(to_lines(responses))
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}
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module.exit_json(**result)
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if __name__ == '__main__':
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main()
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