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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#
# Copyright (c) 2017 Cisco and/or its affiliates.
#
# 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.
#
import logging
from vicn.core.task import BashTask
from netmodel.model.object import Object
from netmodel.model.attribute import Attribute
from netmodel.model.query import Query, ACTION_INSERT, ACTION_SELECT
from netmodel.model.type import String
from netmodel.network.interface import Interface, InterfaceState
from netmodel.network.packet import Packet
from netmodel.network.prefix import Prefix
from netmodel.util.misc import lookahead
log = logging.getLogger(__name__)
class VICNBaseResource(Object):
__type__ = 'vicn/'
@classmethod
def get(cls, query, interface):
cb = interface._callback
if query.object_name == 'script':
predicates = query.filter.to_list()
assert len(predicates) == 1
_, _, name = predicates[0]
script = '{}/{}'.format(interface._manager._base, name)
task = BashTask(None, script)
interface._manager.schedule(task)
return
elif query.object_name == 'gui':
interface._manager._broadcast(query)
return
elif query.object_name == 'resource':
resources = interface._manager.get_resources()
else:
_resources = interface._manager.by_type_str(query.object_name)
resources = list()
for resource in _resources:
group_names = [r.name for r in resource.groups]
resources.append(resource)
if query.action == ACTION_SELECT:
for resource, last in lookahead(resources):
params = resource.get_attribute_dict(aggregates = True)
params['id'] = resource._state.uuid._uuid
params['type'] = resource.get_types()
params['state'] = resource._state.state
params['log'] = resource._state.log
reply = Query(ACTION_INSERT, query.object_name, params = params)
reply.last = last
packet = Packet.from_query(reply, reply = True)
cb(packet, ingress_interface = interface)
else:
log.warning("Unknown action in query {}".format(query))
interface._manager._broadcast(query)
class L2Graph(Object):
__type__ = 'vicn/l2graph'
@classmethod
def get(cls, query, interface):
cb = interface._callback
from vicn.resource.central import _get_l2_graph
G = _get_l2_graph(interface._manager, with_managed=True)
nodes = G.nodes()
edges = G.edges()
params = {'nodes': nodes, 'edges': edges}
reply = Query(ACTION_INSERT, query.object_name, params = params)
reply.last = True
packet = Packet.from_query(reply, reply = True)
cb(packet, ingress_interface = interface)
class VICNInterface(Interface):
__interface__ = 'vicn'
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self._manager = kwargs.pop('manager')
# Resources
resources = list()
resources.extend(self._manager.get_resource_type_names())
resources.append('resource')
for resource in resources:
class VICNResource(VICNBaseResource):
__type__ = '{}'.format(resource.lower())
self.register_object(VICNResource)
self.register_object(L2Graph)
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