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community.general/lib/ansible/module_utils/eos.py
Peter Sprygada 91f3558c64 minor bugfix that will catch connection errors in eos
This commit fixes a situation where connection errors would be caught
but no useful information display.  The connection error is now caught
and emitted in a call to fail_json
2016-02-17 14:19:35 +00:00

236 lines
6.9 KiB
Python

#
# (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/>.
#
NET_PASSWD_RE = re.compile(r"[\r\n]?password: $", re.I)
NET_COMMON_ARGS = dict(
host=dict(required=True),
port=dict(type='int'),
username=dict(required=True),
password=dict(no_log=True),
authorize=dict(default=False, type='bool'),
auth_pass=dict(no_log=True),
transport=dict(choices=['cli', 'eapi']),
use_ssl=dict(default=True, type='bool'),
provider=dict()
)
def to_list(val):
if isinstance(val, (list, tuple)):
return list(val)
elif val is not None:
return [val]
else:
return list()
class Eapi(object):
def __init__(self, module):
self.module = module
# sets the module_utils/urls.py req parameters
self.module.params['url_username'] = module.params['username']
self.module.params['url_password'] = module.params['password']
self.url = None
self.enable = None
def _get_body(self, commands, encoding, reqid=None):
"""Create a valid eAPI JSON-RPC request message
"""
params = dict(version=1, cmds=commands, format=encoding)
return dict(jsonrpc='2.0', id=reqid, method='runCmds', params=params)
def connect(self):
host = self.module.params['host']
port = self.module.params['port']
if self.module.params['use_ssl']:
proto = 'https'
if not port:
port = 443
else:
proto = 'http'
if not port:
port = 80
self.url = '%s://%s:%s/command-api' % (proto, host, port)
def authorize(self):
if self.module.params['auth_pass']:
passwd = self.module.params['auth_pass']
self.enable = dict(cmd='enable', input=passwd)
else:
self.enable = 'enable'
def send(self, commands, encoding='json'):
"""Send commands to the device.
"""
clist = to_list(commands)
if self.enable is not None:
clist.insert(0, self.enable)
data = self._get_body(clist, encoding)
data = self.module.jsonify(data)
headers = {'Content-Type': 'application/json-rpc'}
response, headers = fetch_url(self.module, self.url, data=data,
headers=headers, method='POST')
if headers['status'] != 200:
self.module.fail_json(**headers)
response = self.module.from_json(response.read())
if 'error' in response:
err = response['error']
self.module.fail_json(msg='json-rpc error', **err)
if self.enable:
response['result'].pop(0)
return response['result']
class Cli(object):
def __init__(self, module):
self.module = module
self.shell = None
def connect(self, **kwargs):
host = self.module.params['host']
port = self.module.params['port'] or 22
username = self.module.params['username']
password = self.module.params['password']
self.shell = Shell()
try:
self.shell.open(host, port=port, username=username, password=password)
except Exception, exc:
msg = 'failed to connecto to %s:%s - %s' % (host, port, str(exc))
self.module.fail_json(msg=msg)
def authorize(self):
passwd = self.module.params['auth_pass']
self.send(Command('enable', prompt=NET_PASSWD_RE, response=passwd))
def send(self, commands):
return self.shell.send(commands)
class NetworkModule(AnsibleModule):
def __init__(self, *args, **kwargs):
super(NetworkModule, self).__init__(*args, **kwargs)
self.connection = None
self._config = None
@property
def config(self):
if not self._config:
self._config = self.get_config()
return self._config
def _load_params(self):
params = super(NetworkModule, self)._load_params()
provider = params.get('provider') or dict()
for key, value in provider.items():
if key in NET_COMMON_ARGS.keys():
if not params.get(key) and value is not None:
params[key] = value
return params
def connect(self):
if self.params['transport'] == 'eapi':
self.connection = Eapi(self)
else:
self.connection = Cli(self)
try:
self.connection.connect()
self.execute('terminal length 0')
if self.params['authorize']:
self.connection.authorize()
except Exception, exc:
self.fail_json(msg=exc.message)
def configure(self, commands):
commands = to_list(commands)
commands.insert(0, 'configure terminal')
responses = self.execute(commands)
responses.pop(0)
return responses
def config_replace(self, commands):
if self.params['transport'] == 'cli':
self.fail_json(msg='config replace only supported over eapi')
cmd = 'configure replace terminal:'
commands = '\n'.join(to_list(commands))
command = dict(cmd=cmd, input=commands)
self.execute(command)
def execute(self, commands, **kwargs):
try:
return self.connection.send(commands, **kwargs)
except Exception, exc:
self.fail_json(msg=exc.message, commands=commands)
def disconnect(self):
self.connection.close()
def parse_config(self, cfg):
return parse(cfg, indent=3)
def get_config(self):
cmd = 'show running-config'
if self.params.get('include_defaults'):
cmd += ' all'
if self.params['transport'] == 'cli':
return self.execute(cmd)[0]
else:
resp = self.execute(cmd, encoding='text')
return resp[0]
def get_module(**kwargs):
"""Return instance of NetworkModule
"""
argument_spec = NET_COMMON_ARGS.copy()
if kwargs.get('argument_spec'):
argument_spec.update(kwargs['argument_spec'])
kwargs['argument_spec'] = argument_spec
module = NetworkModule(**kwargs)
# HAS_PARAMIKO is set by module_utils/shell.py
if module.params['transport'] == 'cli' and not HAS_PARAMIKO:
module.fail_json(msg='paramiko is required but does not appear to be installed')
module.connect()
return module