ncclient:NETCONF Python client

# Copyright 2h009 Shikhar Bhushan

#

# Licensed under the Apache License, Version 2.0 (the "License");

# you may not use this file except in compliance with the License.

# You may obtain a copy of the License at

#

#    http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

'Locking-related NETCONF operations'

from rpc import RPC

class Lock(RPC):

    SPEC = {

        'tag': 'lock',

        'subtree': {

            'tag': 'target',

            'subtree': {'tag': None }

        }

    }

    def request(self, target, *args, **kwds):

        spec = Lock.SPEC.copy()

        spec['subtree']['subtree']['tag'] = target

        return self._request(spec, *args, **kwds)

class Unlock(RPC):

    SPEC = {

        'tag': 'unlock',

        'subtree': {

            'tag': 'target',

            'subtree': {'tag': None }

        }

    }

    def request(self, target, *args, **kwds):

        spec = Unlock.SPEC.copy()

        spec['subtree']['subtree']['tag'] = target

        return self._request(spec, *args, **kwds)

class LockContext:

    def __init__(self, session, target):

        self.session = session

        self.target = target

    def __enter__(self):

        reply = Lock(self.session).request(self.target)

        if not reply.ok:

            raise reply.error

        else:

            return self

    def __exit__(self, *args):

        reply = Unlock(session).request(self.target)

        if not reply.ok:

            raise reply.error

        return False