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gns3-server/gns3server/modules/dynamips/nios/nio_fifo.py
2015-02-13 15:11:14 -07:00

77 lines
2.1 KiB
Python

# -*- 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/>.
"""
Interface for FIFO NIOs.
"""
import asyncio
from .nio import NIO
import logging
log = logging.getLogger(__name__)
class NIOFIFO(NIO):
"""
Dynamips FIFO NIO.
:param hypervisor: Dynamips hypervisor instance
"""
_instance_count = 0
def __init__(self, hypervisor):
# create an unique ID and name
nio_id = NIOFIFO._instance_count
NIOFIFO._instance_count += 1
name = 'nio_fifo' + str(nio_id)
NIO.__init__(name, self, hypervisor)
@classmethod
def reset(cls):
"""
Reset the instance count.
"""
cls._instance_count = 0
@asyncio.coroutine
def create(self):
yield from self._hypervisor.send("nio create_fifo {}".format(self._name))
log.info("NIO FIFO {name} created.".format(name=self._name))
@asyncio.coroutine
def crossconnect(self, nio):
"""
Establishes a cross-connect between this FIFO NIO and another one.
:param nio: FIFO NIO instance
"""
yield from self._hypervisor.send("nio crossconnect_fifo {name} {nio}".format(name=self._name,
nio=nio))
log.info("NIO FIFO {name} crossconnected with {nio_name}.".format(name=self._name, nio_name=nio.name))
def __json__(self):
return {"type": "nio_fifo"}