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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.
#
from netmodel.model.type import String
from vicn.core.attribute import Attribute
from vicn.core.requirement import Requirement
from vicn.core.task import BashTask
from vicn.resource.icn.producer import Producer
from vicn.resource.linux.service import Service
TPL_DEFAULT_PREFIX='/ndn/{node.name}'
FN_ETC_DEFAULT='/etc/default/ndnping'
TPL_ETC_DEFAULT='''
# defaults for ndnping server
# Prefix should be set to a valid value
PREFIX="/ndn/server"
FLAGS=""
'''
CMD_START = 'ndnpingserver {prefix} &'
class NDNPingServerBase(Producer):
"""NDNPingServer Resource
This NDNPingServer resource wraps a NDN ping server
Attributes:
prefixes (List[str]) : (overloaded) One-element list containing the
prefix on which the ping server is listening.
TODO:
- ndnpingserver only supports a single prefix.
"""
prefixes = Attribute(String,
default = lambda self: self._default_prefixes())
node = Attribute(requirements = [
Requirement("forwarder",
capabilities = set(['ICN_SUITE_NDN_1_0'])) ])
__package_names__ = ['ndnping']
def _default_prefixes(self):
return [self.format(TPL_DEFAULT_PREFIX)]
#------------------------------------------------------------------------------
class NDNPingServer(NDNPingServerBase):
def __method_start__(self):
return BashTask(self.node, CMD_START)
#------------------------------------------------------------------------------
class NDNPingService(NDNPingServerBase, Service):
__package_names__ = ['ndnping']
__service_name__ = 'ndnping'
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