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7659b8d4e4
Signed-off-by: Ashish Pant <ashish12pant@gmail.com> Adds method to load configuration on the router. Save configuration for resetting. Adds method for configuring interfaces ip address on router. Adds logdir and other pytest.ini option
185 lines
7.7 KiB
Python
185 lines
7.7 KiB
Python
#
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# Modified work Copyright (c) 2019 by VMware, Inc. ("VMware")
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# Original work Copyright (c) 2018 by Network Device Education
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# Foundation, Inc. ("NetDEF")
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#
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# Permission to use, copy, modify, and/or distribute this software
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# for any purpose with or without fee is hereby granted, provided
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# that the above copyright notice and this permission notice appear
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# in all copies.
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#
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# THE SOFTWARE IS PROVIDED "AS IS" AND VMWARE DISCLAIMS ALL WARRANTIES
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# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL VMWARE BE LIABLE FOR
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# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
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# DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
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# ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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# OF THIS SOFTWARE.
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#
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from collections import OrderedDict
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from json import dumps as json_dumps
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import ipaddr
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import pytest
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# Import topogen and topotest helpers
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from lib.topolog import logger
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# Required to instantiate the topology builder class.
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from lib.common_config import (
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number_to_row, number_to_column,
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load_config_to_router,
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create_interfaces_cfg
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)
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def build_topo_from_json(tgen, topo):
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"""
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Reads configuration from JSON file. Adds routers, creates interface
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names dynamically and link routers as defined in JSON to create
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topology. Assigns IPs dynamically to all interfaces of each router.
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* `tgen`: Topogen object
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* `topo`: json file data
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"""
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listRouters = []
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for routerN in sorted(topo['routers'].iteritems()):
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logger.info('Topo: Add router {}'.format(routerN[0]))
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tgen.add_router(routerN[0])
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listRouters.append(routerN[0])
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listRouters.sort()
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if 'ipv4base' in topo:
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ipv4Next = ipaddr.IPv4Address(topo['link_ip_start']['ipv4'])
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ipv4Step = 2 ** (32 - topo['link_ip_start']['v4mask'])
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if topo['link_ip_start']['v4mask'] < 32:
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ipv4Next += 1
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if 'ipv6base' in topo:
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ipv6Next = ipaddr.IPv6Address(topo['link_ip_start']['ipv6'])
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ipv6Step = 2 ** (128 - topo['link_ip_start']['v6mask'])
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if topo['link_ip_start']['v6mask'] < 127:
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ipv6Next += 1
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for router in listRouters:
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topo['routers'][router]['nextIfname'] = 0
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while listRouters != []:
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curRouter = listRouters.pop(0)
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# Physical Interfaces
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if 'links' in topo['routers'][curRouter]:
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def link_sort(x):
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if x == 'lo':
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return 0
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elif 'link' in x:
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return int(x.split('-link')[1])
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else:
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return int(x.split('r')[1])
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for destRouterLink, data in sorted(topo['routers'][curRouter]['links']. \
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iteritems(),
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key=lambda x: link_sort(x[0])):
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currRouter_lo_json = \
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topo['routers'][curRouter]['links'][destRouterLink]
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# Loopback interfaces
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if 'type' in data and data['type'] == 'loopback':
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if 'ipv4' in currRouter_lo_json and \
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currRouter_lo_json['ipv4'] == 'auto':
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currRouter_lo_json['ipv4'] = '{}{}.{}/{}'. \
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format(topo['lo_prefix']['ipv4'], number_to_row(curRouter), \
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number_to_column(curRouter), topo['lo_prefix']['v4mask'])
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if 'ipv6' in currRouter_lo_json and \
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currRouter_lo_json['ipv6'] == 'auto':
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currRouter_lo_json['ipv6'] = '{}{}:{}/{}'. \
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format(topo['lo_prefix']['ipv6'], number_to_row(curRouter), \
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number_to_column(curRouter), topo['lo_prefix']['v6mask'])
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if "-" in destRouterLink:
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# Spliting and storing destRouterLink data in tempList
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tempList = destRouterLink.split("-")
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# destRouter
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destRouter = tempList.pop(0)
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# Current Router Link
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tempList.insert(0, curRouter)
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curRouterLink = "-".join(tempList)
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else:
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destRouter = destRouterLink
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curRouterLink = curRouter
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if destRouter in listRouters:
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currRouter_link_json = \
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topo['routers'][curRouter]['links'][destRouterLink]
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destRouter_link_json = \
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topo['routers'][destRouter]['links'][curRouterLink]
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# Assigning name to interfaces
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currRouter_link_json['interface'] = \
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'{}-{}-eth{}'.format(curRouter, destRouter, topo['routers'] \
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[curRouter]['nextIfname'])
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destRouter_link_json['interface'] = \
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'{}-{}-eth{}'.format(destRouter, curRouter, topo['routers'] \
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[destRouter]['nextIfname'])
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topo['routers'][curRouter]['nextIfname'] += 1
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topo['routers'][destRouter]['nextIfname'] += 1
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# Linking routers to each other as defined in JSON file
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tgen.gears[curRouter].add_link(tgen.gears[destRouter],
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topo['routers'][curRouter]['links'][destRouterLink] \
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['interface'], topo['routers'][destRouter]['links'] \
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[curRouterLink]['interface'])
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# IPv4
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if 'ipv4' in currRouter_link_json:
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if currRouter_link_json['ipv4'] == 'auto':
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currRouter_link_json['ipv4'] = \
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'{}/{}'.format(ipv4Next, topo['link_ip_start'][ \
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'v4mask'])
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destRouter_link_json['ipv4'] = \
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'{}/{}'.format(ipv4Next + 1, topo['link_ip_start'][ \
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'v4mask'])
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ipv4Next += ipv4Step
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# IPv6
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if 'ipv6' in currRouter_link_json:
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if currRouter_link_json['ipv6'] == 'auto':
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currRouter_link_json['ipv6'] = \
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'{}/{}'.format(ipv6Next, topo['link_ip_start'][ \
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'v6mask'])
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destRouter_link_json['ipv6'] = \
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'{}/{}'.format(ipv6Next + 1, topo['link_ip_start'][ \
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'v6mask'])
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ipv6Next = ipaddr.IPv6Address(int(ipv6Next) + ipv6Step)
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logger.debug("Generated link data for router: %s\n%s", curRouter,
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json_dumps(topo["routers"][curRouter]["links"],
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indent=4, sort_keys=True)
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def build_config_from_json(tgen, topo, save_bkup=True):
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"""
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Reads initial configuraiton from JSON for each router, builds
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configuration and loads its to router.
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* `tgen`: Topogen object
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* `topo`: json file data
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"""
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func_dict = OrderedDict([
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("links", create_interfaces_cfg),
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])
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data = topo["routers"]
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for func_type in func_dict.keys():
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logger.info('Building configuration for {}'.format(func_type))
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func_dict.get(func_type)(tgen, data, build=True)
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for router in sorted(topo['routers'].keys()):
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logger.info('Configuring router {}...'.format(router))
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result = load_config_to_router(tgen, router, save_bkup)
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if not result:
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logger.info("Failed while configuring {}".format(router))
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pytest.exit(1)
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