367 lines
11 KiB
Python
367 lines
11 KiB
Python
#!/usr/bin/python
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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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ANSIBLE_METADATA = {'metadata_version': '1.0',
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'status': ['preview'],
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'supported_by': 'core'}
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DOCUMENTATION = """
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---
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module: junos_command
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version_added: "2.1"
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author: "Peter Sprygada (@privateip)"
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short_description: Run arbitrary commands on an Juniper JUNOS device
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description:
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- Sends an arbitrary set of commands to an JUNOS 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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extends_documentation_fragment: junos
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options:
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commands:
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description:
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- The commands to send to the remote junos 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 I(retries) has been exceeded.
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required: false
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default: null
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rpcs:
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description:
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- The C(rpcs) argument accepts a list of RPCs to be executed
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over a netconf session and the results from the RPC execution
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is return to the playbook via the modules results dictionary.
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required: false
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default: null
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version_added: "2.3"
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wait_for:
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description:
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- Specifies what to evaluate from the output of the command
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and what conditionals to apply. This argument will cause
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the task to wait for a particular conditional to be true
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before moving forward. If the conditional is not true
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by the configured retries, the task fails. See examples.
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required: false
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default: null
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aliases: ['waitfor']
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version_added: "2.2"
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match:
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description:
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- The I(match) argument is used in conjunction with the
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I(wait_for) argument to specify the match policy. Valid
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values are C(all) or C(any). If the value is set to C(all)
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then all conditionals in the I(wait_for) must be satisfied. If
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the value is set to C(any) then only one of the values must be
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satisfied.
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required: false
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default: all
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choices: ['any', 'all']
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version_added: "2.2"
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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 I(wait_for)
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conditionals.
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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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conditional, the interval indicates how to 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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"""
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EXAMPLES = """
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- name: run show version on remote devices
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junos_command:
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commands: show version
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- name: run show version and check to see if output contains Juniper
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junos_command:
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commands: show version
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wait_for: result[0] contains Juniper
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- name: run multiple commands on remote nodes
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junos_command:
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commands:
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- show version
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- show interfaces
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- name: run multiple commands and evaluate the output
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junos_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 Juniper
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- result[1] contains Loopback0
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- name: run commands and specify the output format
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junos_command:
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commands: show version
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display: json
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- name: run rpc on the remote device
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junos_command:
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rpcs: get-software-information
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"""
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RETURN = """
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failed_conditions:
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description: the conditionals that failed
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returned: failed
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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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import re
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import shlex
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from functools import partial
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from xml.etree import ElementTree as etree
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from xml.etree.ElementTree import Element, SubElement, tostring
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from ansible.module_utils.junos import junos_argument_spec, check_args
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from ansible.module_utils.basic import AnsibleModule
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from ansible.module_utils.netcli import Conditional, FailedConditionalError
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from ansible.module_utils.netconf import send_request
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from ansible.module_utils.network_common import ComplexList, to_list
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from ansible.module_utils.six import string_types, iteritems
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try:
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import jxmlease
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HAS_JXMLEASE = True
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except ImportError:
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HAS_JXMLEASE = False
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USE_PERSISTENT_CONNECTION = True
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def to_lines(stdout):
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lines = list()
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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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lines.append(item)
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return lines
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def rpc(module, items):
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responses = list()
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for item in items:
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name = item['name']
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xattrs = item['xattrs']
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args = item.get('args')
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text = item.get('text')
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name = str(name).replace('_', '-')
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if all((module.check_mode, not name.startswith('get'))):
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module.fail_json(msg='invalid rpc for running in check_mode')
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element = Element(name, xattrs)
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if text:
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element.text = text
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elif args:
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for key, value in iteritems(args):
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key = str(key).replace('_', '-')
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if isinstance(value, list):
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for item in value:
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child = SubElement(element, key)
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if item is not True:
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child.text = item
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else:
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child = SubElement(element, key)
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if value is not True:
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child.text = value
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reply = send_request(module, element)
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if xattrs['format'] == 'text':
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data = reply.find('.//output')
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responses.append(data.text.strip())
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elif xattrs['format'] == 'json':
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responses.append(module.from_json(reply.text.strip()))
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else:
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responses.append(tostring(reply))
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return responses
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def split(value):
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lex = shlex.shlex(value)
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lex.quotes = '"'
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lex.whitespace_split = True
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lex.commenters = ''
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return list(lex)
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def parse_rpcs(module):
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items = list()
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for rpc in (module.params['rpcs'] or list()):
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parts = split(rpc)
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name = parts.pop(0)
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args = dict()
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for item in parts:
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key, value = item.split('=')
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if str(value).upper() in ['TRUE', 'FALSE']:
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args[key] = bool(value)
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elif re.match(r'^[0-9]+$', value):
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args[key] = int(value)
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else:
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args[key] = str(value)
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display = module.params['display'] or 'xml'
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xattrs = {'format': display}
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items.append({'name': name, 'args': args, 'xattrs': xattrs})
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return items
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def parse_commands(module, warnings):
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items = list()
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for command in (module.params['commands'] or list()):
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if module.check_mode and not 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' % command
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)
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parts = command.split('|')
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text = parts[0]
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display = module.params['display'] or 'text'
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xattrs = {'format': display}
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if '| display json' in command:
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xattrs['format'] = 'json'
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elif '| display xml' in command:
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xattrs['format'] = 'xml'
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items.append({'name': 'command', 'xattrs': xattrs, 'text': text})
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return items
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def main():
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"""entry point for module execution
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"""
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argument_spec = dict(
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commands=dict(type='list'),
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rpcs=dict(type='list'),
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display=dict(choices=['text', 'json', 'xml'], aliases=['format', 'output']),
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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(junos_argument_spec)
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required_one_of = [('commands', 'rpcs')]
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module = AnsibleModule(argument_spec=argument_spec,
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required_one_of=required_one_of,
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supports_check_mode=True)
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warnings = list()
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check_args(module, warnings)
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items = list()
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items.extend(parse_commands(module, warnings))
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items.extend(parse_rpcs(module))
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wait_for = module.params['wait_for'] or list()
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display = module.params['display']
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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 = rpc(module, items)
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transformed = list()
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for item, resp in zip(items, responses):
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if item['xattrs']['format'] == 'xml':
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if not HAS_JXMLEASE:
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module.fail_json(msg='jxmlease is required but does not appear to '
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'be installed. It can be installed using `pip install jxmlease`')
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try:
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transformed.append(jxmlease.parse(resp))
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except:
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raise ValueError(resp)
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else:
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transformed.append(resp)
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for item in list(conditionals):
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try:
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if item(transformed):
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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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except FailedConditionalError:
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pass
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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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'warnings': warnings,
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'stdout': responses,
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'stdout_lines': 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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