Current File : //lib/python2.7/site-packages/ansible/module_utils/junos.py
#
# (c) 2015 Peter Sprygada, <psprygada@ansible.com>
#
# 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/>.
#
import re
import shlex
from distutils.version import LooseVersion
from ansible.module_utils.pycompat24 import get_exception
from ansible.module_utils.network import register_transport, to_list
from ansible.module_utils.network import NetworkError
from ansible.module_utils.shell import CliBase
from ansible.module_utils.six import string_types
try:
from jnpr.junos import Device
from jnpr.junos.utils.config import Config
from jnpr.junos.version import VERSION
from jnpr.junos.exception import RpcError, ConnectError, ConfigLoadError, CommitError
from jnpr.junos.exception import LockError, UnlockError
if LooseVersion(VERSION) < LooseVersion('1.2.2'):
HAS_PYEZ = False
else:
HAS_PYEZ = True
except ImportError:
HAS_PYEZ = False
try:
import jxmlease
HAS_JXMLEASE = True
except ImportError:
HAS_JXMLEASE = False
try:
from lxml import etree
except ImportError:
import xml.etree.ElementTree as etree
SUPPORTED_CONFIG_FORMATS = ['text', 'xml']
def xml_to_json(val):
if isinstance(val, string_types):
return jxmlease.parse(val)
else:
return jxmlease.parse_etree(val)
def xml_to_string(val):
return etree.tostring(val)
class Netconf(object):
def __init__(self):
if not HAS_PYEZ:
raise NetworkError(
msg='junos-eznc >= 1.2.2 is required but does not appear to be installed. '
'It can be installed using `pip install junos-eznc`'
)
if not HAS_JXMLEASE:
raise NetworkError(
msg='jxmlease is required but does not appear to be installed. '
'It can be installed using `pip install jxmlease`'
)
self.device = None
self.config = None
self._locked = False
self._connected = False
self.default_output = 'xml'
def raise_exc(self, msg):
if self.device:
if self._locked:
self.config.unlock()
self.disconnect()
raise NetworkError(msg)
def connect(self, params, **kwargs):
host = params['host']
kwargs = dict()
kwargs['port'] = params.get('port') or 830
kwargs['user'] = params['username']
if params['password']:
kwargs['passwd'] = params['password']
if params['ssh_keyfile']:
kwargs['ssh_private_key_file'] = params['ssh_keyfile']
kwargs['gather_facts'] = False
try:
self.device = Device(host, **kwargs)
self.device.open()
self.device.timeout = params['timeout']
except ConnectError:
exc = get_exception()
self.raise_exc('unable to connect to %s: %s' % (host, str(exc)))
self.config = Config(self.device)
self._connected = True
def disconnect(self):
try:
self.device.close()
except AttributeError:
pass
self._connected = False
### Command methods ###
def run_commands(self, commands):
responses = list()
for cmd in commands:
meth = getattr(self, cmd.args.get('command_type'))
responses.append(meth(str(cmd), output=cmd.output))
for index, cmd in enumerate(commands):
if cmd.output == 'xml':
responses[index] = xml_to_json(responses[index])
elif cmd.args.get('command_type') == 'rpc':
responses[index] = str(responses[index].text).strip()
elif 'RpcError' in responses[index]:
raise NetworkError(responses[index])
return responses
def cli(self, commands, output='xml'):
'''Send commands to the device.'''
try:
return self.device.cli(commands, format=output, warning=False)
except (ValueError, RpcError):
exc = get_exception()
self.raise_exc('Unable to get cli output: %s' % str(exc))
def rpc(self, command, output='xml'):
name, kwargs = rpc_args(command)
meth = getattr(self.device.rpc, name)
reply = meth({'format': output}, **kwargs)
return reply
### Config methods ###
def get_config(self, config_format="text"):
if config_format not in SUPPORTED_CONFIG_FORMATS:
self.raise_exc(msg='invalid config format. Valid options are '
'%s' % ', '.join(SUPPORTED_CONFIG_FORMATS))
ele = self.rpc('get_configuration', output=config_format)
if config_format == 'text':
return unicode(ele.text).strip()
else:
return ele
def load_config(self, config, commit=False, replace=False, confirm=None,
comment=None, config_format='text', overwrite=False):
if all([replace, overwrite]):
self.raise_exc('setting both replace and overwrite to True is invalid')
if replace:
merge = False
overwrite = False
elif overwrite:
merge = False
overwrite = True
else:
merge = True
overwrite = False
if overwrite and config_format == 'set':
self.raise_exc('replace cannot be True when config_format is `set`')
self.lock_config()
try:
candidate = '\n'.join(config)
self.config.load(candidate, format=config_format, merge=merge,
overwrite=overwrite)
except ConfigLoadError:
exc = get_exception()
self.raise_exc('Unable to load config: %s' % str(exc))
diff = self.config.diff()
self.check_config()
if all((commit, diff)):
self.commit_config(comment=comment, confirm=confirm)
self.unlock_config()
return diff
def save_config(self):
raise NotImplementedError
### end of Config ###
def get_facts(self, refresh=True):
if refresh:
self.device.facts_refresh()
return self.device.facts
def unlock_config(self):
try:
self.config.unlock()
self._locked = False
except UnlockError:
exc = get_exception()
raise NetworkError('unable to unlock config: %s' % str(exc))
def lock_config(self):
try:
self.config.lock()
self._locked = True
except LockError:
exc = get_exception()
raise NetworkError('unable to lock config: %s' % str(exc))
def check_config(self):
if not self.config.commit_check():
self.raise_exc(msg='Commit check failed')
def commit_config(self, comment=None, confirm=None):
try:
kwargs = dict(comment=comment)
if confirm and confirm > 0:
kwargs['confirm'] = confirm
return self.config.commit(**kwargs)
except CommitError:
exc = get_exception()
raise NetworkError('unable to commit config: %s' % str(exc))
def confirm_commit(self, checkonly=False):
try:
resp = self.rpc('get_commit_information')
needs_confirm = 'commit confirmed, rollback' in resp[0][4].text
if checkonly:
return needs_confirm
return self.commit_config()
except IndexError:
# if there is no comment tag, the system is not in a commit
# confirmed state so just return
pass
def rollback_config(self, identifier, commit=True, comment=None):
self.lock_config()
try:
self.config.rollback(identifier)
except ValueError:
exc = get_exception()
self.raise_exc('Unable to rollback config: $s' % str(exc))
diff = self.config.diff()
if commit:
self.commit_config(comment=comment)
self.unlock_config()
return diff
Netconf = register_transport('netconf')(Netconf)
class Cli(CliBase):
CLI_PROMPTS_RE = [
re.compile(r"[\r\n]?[\w+\-\.:\/\[\]]+(?:\([^\)]+\)){,3}(?:>|#) ?$"),
re.compile(r"\[\w+\@[\w\-\.]+(?: [^\]])\] ?[>#\$] ?$")
]
CLI_ERRORS_RE = [
re.compile(r"unkown command")
]
def connect(self, params, **kwargs):
super(Cli, self).connect(params, **kwargs)
if self.shell._matched_prompt.strip().endswith('%'):
self.execute('cli')
self.execute('set cli screen-length 0')
def configure(self, commands, comment=None):
cmds = ['configure']
cmds.extend(to_list(commands))
if comment:
cmds.append('commit and-quit comment "%s"' % comment)
else:
cmds.append('commit and-quit')
responses = self.execute(cmds)
return responses[1:-1]
Cli = register_transport('cli', default=True)(Cli)
def split(value):
lex = shlex.shlex(value)
lex.quotes = '"'
lex.whitespace_split = True
lex.commenters = ''
return list(lex)
def rpc_args(args):
kwargs = dict()
args = split(args)
name = args.pop(0)
for arg in args:
key, value = arg.split('=')
if str(value).upper() in ['TRUE', 'FALSE']:
kwargs[key] = bool(value)
elif re.match(r'^[0-9]+$', value):
kwargs[key] = int(value)
else:
kwargs[key] = str(value)
return (name, kwargs)
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