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#
# Copyright (c) 2019 PANTHEON.tech.
# Copyright (c) 2019 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 os
import subprocess
from vpp_controler import Vpp_controler
from netconf_client import NetConfClient
from socket import AF_INET
from pyroute2 import IPRoute
import psutil
import time
from ydk.providers import NetconfServiceProvider
from ydk.errors import YClientError
class Topology:
debug = False
def __init__(self):
self.process = []
def __del__(self):
self._kill_process()
def _kill_process(self):
if self.debug:
return
if not self.process:
return
for process in self.process:
if process is None:
continue
process.terminate()
for proc in psutil.process_iter(attrs=['pid', 'name']):
name = proc.info['name']
if 'vpp' in name or 'sysrepo' in name or 'netopeer' in name:
proc.kill()
self.process = []
def _prepare_linux_enviroment(self):
ip = IPRoute()
exist = ip.link_lookup(ifname='vpp1')
if exist:
return
ip.link('add', ifname='vpp1', peer='virtual1', kind='veth')
ip.link('add', ifname='vpp2', peer='virtual2', kind='veth')
vpp1 = ip.link_lookup(ifname='virtual1')[0]
vpp2 = ip.link_lookup(ifname='virtual2')[0]
ip.link('set', index=vpp1, state='up')
ip.link('set', index=vpp2, state='up')
ip.addr('add', index=vpp1, address='192.168.0.2', prefixlen=24)
ip.addr('add', index=vpp2, address='192.168.1.2', prefixlen=24)
def _start_sysrepo(self):
#TODO: Add to log
#print("Start sysrepo deamon.")
#TODO: Need property close.
err = open("/var/log/sysrepod", 'wb')
if self.debug:
params = "-l 4"
else:
params = "-l 3"
self.sysrepo = subprocess.Popen(["sysrepod", "-d", params],
stdout=subprocess.PIPE, stderr=err)
self.process.append(self.sysrepo)
def _start_sysrepo_plugins(self):
#TODO: Add to log
#print("Start sysrepo plugins.")
#TODO: Need property close.
err = open("/var/log/sysrepo-plugind", 'wb')
if self.debug:
params = "-l 4"
else:
params = "-l 3"
self.splugin = subprocess.Popen(["sysrepo-plugind", "-d", params],
stdout=subprocess.PIPE, stderr=err)
self.process.append(self.splugin)
def _start_netopeer_server(self):
#TODO: Add to log
#print("Start netopeer server.")
err = open("/var/log/netopeer2-server", 'wb')
self.netopeer_server = subprocess.Popen(["netopeer2-server", "-d"],
stdout=subprocess.PIPE, stderr=err)
self.process.append(self.netopeer_server)
def _start_netopeer_cli(self):
#TODO: Add to log
#print("Start netopeer client.")
self.netopeer_cli = Netopeer_controler()
self.process.append(self.netopeer_cli)
self.netopeer_cli.spawn()
def _start_vpp(self):
#print("Start VPP.")
self.vpp = Vpp_controler(self.debug)
self.vpp.spawn()
self.process.append(self.vpp)
def _start_netconfclient(self):
#print("Start NetconfClient")
try:
self.netconf_client = NetConfClient(address="127.0.0.1",
username="user", password="user")
self.process.append(self.netconf_client)
except RuntimeError as err:
print("NetConfClient failed, {}".format(err))
def get_vpp(self):
return self.vpp
def get_netopeer_cli(self):
return self.netconf_client
def create_topology(self, debug=False):
self.debug = debug
self._prepare_linux_enviroment()
self._start_vpp()
self._start_sysrepo()
time.sleep(1)
self._start_sysrepo_plugins()
self._start_netopeer_server()
#Wait for netopeer server
time.sleep(1)
self._start_netconfclient()
def close_topology(self):
self._kill_process()
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