gns3-server/gns3server/modules/dynamips/nios/nio_null.py

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# -*- coding: utf-8 -*-
#
# Copyright (C) 2013 GNS3 Technologies Inc.
#
# This program 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.
#
# This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
"""
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Interface for dummy NIOs (mostly for tests).
"""
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import asyncio
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from .nio import NIO
import logging
log = logging.getLogger(__name__)
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class NIONull(NIO):
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"""
Dynamips NULL NIO.
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:param hypervisor: Dynamips hypervisor instance
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"""
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_instance_count = 0
def __init__(self, hypervisor):
NIO.__init__(self, hypervisor)
# create an unique ID
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self._id = NIONull._instance_count
NIONull._instance_count += 1
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self._name = 'nio_null' + str(self._id)
@classmethod
def reset(cls):
"""
Reset the instance count.
"""
cls._instance_count = 0
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@asyncio.coroutine
def create(self):
yield from self._hypervisor.send("nio create_null {}".format(self._name))
log.info("NIO NULL {name} created.".format(name=self._name))