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vfx.py
executable file
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vfx.py
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#!/usr/bin/env python
"""
Required steps per fabric to create a vxlan overlay gateway
* Define an overlay-gateway name
* Set the gateway type to l2 extension
* Specify a loopback id to use for the VTEP
* Attach an RBridge ID
* Map a VLAN to a VNI
* Activate the overlay gateway
* Define a name for the remote site
* Specify remote site's IP address of VTEP
* Specify which vlans to extend
Example usage:
$ ./vfx.py create --hostname 10.254.11.17 --gw foo --loopback 100 \
--rbridge 100 --vlan 100 --vni 1600000 --remote_site site2 \
--remote_ip 200.200.200.200
$ ./vfx.py show --hostname 10.254.11.17 --gw sko_gateway
"""
import requests
import vfx_payload as PF
import sys
from xml.dom.minidom import parseString
import argparse
import logging
class overlay_gw(object):
"""class to manage vxlan overlay gateways"""
def __init__(self, name, hostname, username, password):
self.gateway_name = name
self.ext_type = 'layer2-extension'
self.config_url = "http://{}/rest/config/running".format(hostname)
self.session = requests.Session()
self.session.auth = (username, password)
self.session.headers = {'Accept': 'application/vnd.configuration.resource+xml'}
def vfextension_create(self, loopback, rbridge):
"""docstring for vfextensionn_create"""
self.tunnel_create()
self.overlay_type_set()
self.vtep_create(loopback)
self.rbridge_attach(rbridge)
def tunnel_create(self):
"""docstring for tunnel_create"""
payload = PF.overlay_gateway(self.gateway_name)
req = self.session.post(self.config_url, data=payload)
self.check_response(req)
return req
def tunnel_delete(self):
"""docstring for _tunnel_del"""
url = self.config_url + "/overlay-gateway/{}".format(self.gateway_name)
logging.info("url: %s", url)
payload = PF.overlay_gateway(self.gateway_name)
req = self.session.delete(url, data=payload)
self.check_response(req)
return req
def check_response(self, rsp):
"""docstring for check_response"""
logging.info("rsp code: %d: %s", rsp.status_code, rsp.reason)
if rsp.status_code not in (200, 201, 204):
logging.error("http request failed: %s" % rsp.reason)
logging.error("rc: %d\n%s", rsp.status_code, rsp.content)
raise Exception('Request Failed')
def overlay_type_set(self):
"""docstring for overlay_type_set"""
url = self.config_url + "/overlay-gateway/{}/type".format(
self.gateway_name)
logging.info("url: %s", url)
payload = PF.set_overlay_type(self.ext_type)
req = self.session.put(url, data=payload)
self.check_response(req)
return req
def vtep_create(self, loopback):
"""docstring for vtep_create"""
url = self.config_url + "/overlay-gateway/{}/type".format(
self.gateway_name)
url += "/ip/interface/Loopback"
logging.info("url: %s", url)
payload = PF.create_vtep(loopback)
req = self.session.put(url, data=payload)
self.check_response(req)
return req
def rbridge_attach(self, rbridge):
"""docstring for _rbridge_attach"""
url = self.config_url + "/overlay-gateway/{}/attach".format(
self.gateway_name)
logging.info("url: %s", url)
payload = PF.attach_rbridge(rbridge)
req = self.session.put(url, data=payload)
self.check_response(req)
return req
def vlan_to_vni_map(self, vlan, vni):
"""docstring for vlan_to_vni_map"""
url = self.config_url + "/overlay-gateway/{}/map".format(
self.gateway_name)
logging.info("url: %s", url)
payload = PF.vlan_to_vni_mapping(vlan, vni)
req = self.session.post(url, data=payload)
self.check_response(req)
return req
def gateway_activate(self):
"""docstring for gateway_activate"""
url = self.config_url + "/overlay-gateway/{}".format(self.gateway_name)
logging.info("url: %s", url)
payload = PF.activate_gw()
req = self.session.post(url, data=payload)
self.check_response(req)
return req
def remote_site_create(self, name, ipaddr):
"""docstring for remote_site_create"""
url = self.config_url + "/overlay-gateway/{}".format(self.gateway_name)
logging.info("url: %s", url)
payload = PF.define_remote_site(name)
req = self.session.post(url, data=payload)
self.check_response(req)
logging.info("rsp code: %d: %s", req.status_code, req.reason)
url += "/site/{}".format(name)
logging.info("url: %s", url)
payload = PF.add_remote_ip(ipaddr)
req = self.session.post(url, data=payload)
self.check_response(req)
return req
def vlan_extend(self, name, vlan):
"""docstring for vlan_extend"""
url = self.config_url + "/overlay-gateway/{}".format(self.gateway_name)
url += "/site/{}/extend".format(name)
logging.info("url: %s", url)
payload = PF.extend_vlan(vlan)
req = self.session.put(url, data=payload)
self.check_response(req)
return req
def tunnel_show(self, gw=None):
"""diplay information about tunnel name"""
url = self.config_url + "/overlay-gateway/"
if gw is not None:
url += self.gateway_name
logging.info("url: %s", url)
req = self.session.get(url)
self.check_response(req)
#NOTE overlay gateway details are not complete
data = "<xml>\n" + req.content + "</xml>\r\n"
dom = parseString(data)
gateway = dom.getElementsByTagName('overlay-gateway')[0]
print "GW Name: " + gateway.getElementsByTagName(
'name')[0].firstChild.nodeValue
if gw is not None:
print "Active: " + gateway.getElementsByTagName(
'activate')[0].firstChild.nodeValue
print "Type: " + gateway.getElementsByTagName(
'type')[0].firstChild.nodeValue
print "RBridge_ID " + gateway.getElementsByTagName(
'add')[0].firstChild.nodeValue
print "VLAN: " + gateway.getElementsByTagName(
'vlan')[0].firstChild.nodeValue
def main():
parser = argparse.ArgumentParser(
description='Brocade VCS Overlay Gateway Builder')
parser.add_argument('action', choices=['create', 'delete', 'update', 'show'])
parser.add_argument("--hostname", required=True, help="VCS Managment IP")
parser.add_argument("--username", default='admin', help="login username")
parser.add_argument("--password", default='password', help="login password")
parser.add_argument("--gw", help="tunnel gateway name")
parser.add_argument('--loopback', help='loopback id to create vtep')
parser.add_argument('--vlan', help='vlan to extend')
parser.add_argument('--vni', help='map vlan to this vni')
parser.add_argument('--rbridge', help='rbridge id to carry gateway')
parser.add_argument('--remote_site', help='remote site name')
parser.add_argument('--remote_ip', help='ip addr of remote site vtep')
parser.add_argument('--verbose', action='store_true',
help='display debug output')
args = parser.parse_args()
if args.verbose == True:
logging.basicConfig(level=logging.INFO)
gw = overlay_gw(args.gw, args.hostname, args.username, args.password)
if args.action == 'create':
try:
gw.vfextension_create(args.loopback, args.rbridge)
gw.vlan_to_vni_map(args.vlan, args.vni)
gw.gateway_activate()
gw.remote_site_create(args.remote_site, args.remote_ip)
gw.vlan_extend(args.remote_site, args.vlan)
except:
print 'something went wrong :('
elif args.action == 'update':
#TODO: update gw supports
print 'not implemented'
elif args.action == 'delete':
gw.tunnel_delete()
elif args.action == 'show':
gw.tunnel_show(gw=args.gw)
if __name__ == '__main__':
main()