/
pathman_sr.py
1756 lines (1504 loc) · 66.6 KB
/
pathman_sr.py
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#! /usr/bin/env python2.7
"""
* Copyright (c) 2016 by Cisco Systems, Inc.
* All rights reserved.
Pathman SR
Niklas Montin, 20140705, niklas@cisco.com
-- Get the link-state topology and build a graph
20141022, Niklas - Fixed Helium support - removed the repeated key portion 'l3-unicast-igp-topology'
Could add a test to see what key to use.
20141111, Niklas - Fixed one more Helium key-change path[path][0] and 'network-topology-pcep:' being repeated
20141201, Niklas - ver3.5 - compacted the filestructure: rerst_server_v5, topo_data and pathman35
20141202, Niklas - ver 4.0 - PCEP stateful 07 work, using xml
20141203, Niklas - Adding rotating log
20141204, Niklas - ver 4.1 Enhanced url error checking, nprint retired for python logging
20141208, Niklas - ver 4.2 config_ini.py now holds relevant environmend variables (ODL ip-address and port)
20141213, Niklas - ver 4.3 configfile instead of configdict
added 2sec delay after create of stateful 07 LSP
20150303, Niklas - ver 4.4, merged 4.2 and 4.3 changes - sleep and error checking
20150303, Niklas - ver 4.5, refresh topology when getTopo is send
20150312, Wei - ver 4.6, add prefix in node and traffic in link
20150312, Niklas - ver 4.7, added support for 66 nodes in topo with GPS coordinates (topo_data.py)
20150401, Wei - ver 4.7.1, fix bug for missing nodes
20150407, Niklas - ver 4.7.2, minor bugfix for missing command status from 02LSP
20150522, Niklas - ver 4.8, OSPF support, broadcast network support, namelookup for ospf
20150531, Niklas - ver 4.9, pseudo node fixes
20150830, Niklas - ver 4.9b - Lithium changes - auth and xml payload for create and delete
20150930, Niklas - ver 5.0 - Minor cleanup for publishing
20160316, Niklas - ver 5.1 - Adding Netconf module for config scan
20160328, Niklas - ver 5.2 - Added SegmentRouting support
20160411, Niklas - ver 5.2b - Verified both OSPF and ISIS support w xrvr-6.0.0
20160510, Niklas - ver 5.3 - Added pcep and sr data to list and topo commands
20160528, Alexei Zverev - ver 5.3.1 - Added sr_enabled & pcep_enabled boolean flags to REST response
20160529, Niklas - ver 5.3.2 - loopback is no present even if pcep is not enabled.
20160601, Niklas - ver 5.4 - Created two topologies, one bgp-ls based topo for display, one sr-based for paths
20160608, Niklas - ver 5.5 - Added fixes from Pathman project: metrics, asymmetric links
20160614, Niklas - ver 5.6 - added update function for SR paths
included a pathman fix for missing termination-points
20160811, Niklas - ver 5.7 - Changed Netconf url's to avoid mount point issues. tested w xrv 6.0.0, 6.0.1
- Added sid_list to LSP to not list false SR LSPs
20160831, Niklas - ver 5.7b - added pseudo node fix from Pathman project
20160905, Niklas - ver 5.8 - Added ODL version detection and new netconf urls for Boron.
20160906, Giles - ver 5.9 - Fixed TE metric get for ISIS,
20160906, Niklas - ver 5.9b - Added topologies for TE and IGP metrics
20160912, Niklas - ver 5.9c - Fixed Boron version check from false positives
20160919, Niklas - ver 5.9d - getTopo reply format changed
20160924, Niklas - ver 5.9e - Updated metrics selection
20161204, Niklas - Ver 5.9f - Added BGP-RIB support to retrieve SIDs. Requires XRv 6.1.x, or higher.
20161210, Niklas - ver 5.9g - Added Netconf-modules for users to add their nodes to netconf
- Added static netconf mappings for users ho give up on netconf
20161226, Niklas - ver 5.9h - Multi area/level fix for bgp-ls and sid bug.
20170202, Niklas - ver 5.9i - Refactored sid_list to sid_saves to avoid duplicate use
20171013, Niklas - ver 5.9j - Updated odl version lis and checks
"""
__author__ = 'niklas'
import os, re, time, sys
import requests
import json
import logging
import logging.config
from logging.handlers import RotatingFileHandler
from logging import Formatter
from collections import namedtuple
from copy import deepcopy
from topo_data import topologyData
#==============================================================
version = '5.9j'
# Defaults overridden by pathman_ini.py
odl_ip = '127.0.0.1'
odl_port = '8181'
log_file = 'pathman.log'
log_size = 2000000
log_count = 3
log_level = 'INFO'
#log_level = 'DEBUG'
from pathman_ini import *
#==============================================================
Node = namedtuple('Node', ['name', 'id', 'loopback', 'portlist','pcc','pcep_type','prefix', 'sid'])
LSP = namedtuple('LSP',['name', 'pcc', 'hoplist', 'iphoplist', 'sid_list'])
get_version = 'http://%s:%s/restconf/modules' %(odl_ip, odl_port)
get_topo = 'http://%s:%s/restconf/operational/network-topology:network-topology/topology/example-linkstate-topology' %(odl_ip, odl_port)
get_pcep = 'http://%s:%s/restconf/operational/network-topology:network-topology/topology/pcep-topology' %(odl_ip, odl_port)
create_lsp = 'http://%s:%s/restconf/operations/network-topology-pcep:add-lsp' %(odl_ip, odl_port)
update_lsp = 'http://%s:%s/restconf/operations/network-topology-pcep:update-lsp' %(odl_ip, odl_port)
delete_lsp = 'http://%s:%s/restconf/operations/network-topology-pcep:remove-lsp' %(odl_ip, odl_port)
get_nodes = 'http://%s:%s/restconf/config/opendaylight-inventory:nodes' %(odl_ip, odl_port)
get_node_topo = 'http://%s:%s/restconf/operational/network-topology:network-topology/topology/topology-netconf' %(odl_ip, odl_port)
get_node_config = 'http://%s:%s/restconf/config/network-topology:network-topology/topology/topology-netconf/node/{node}/yang-ext:mount/' %(odl_ip, odl_port)
get_node_isis_config = 'http://%s:%s/restconf/operational/network-topology:network-topology/topology/topology-netconf/node/{node}/yang-ext:mount/Cisco-IOS-XR-clns-isis-cfg:isis' %(odl_ip, odl_port)
get_node_ospf_config = 'http://%s:%s/restconf/operational/network-topology:network-topology/topology/topology-netconf/node/{node}/yang-ext:mount/Cisco-IOS-XR-ipv4-ospf-cfg:ospf' %(odl_ip, odl_port)
get_node_bgp_config = 'http://%s:%s/restconf/operational/network-topology:network-topology/topology/topology-netconf/node/{node}/yang-ext:mount/Cisco-IOS-XR-ipv4-bgp-cfg:bgp' %(odl_ip, odl_port)
curl_cmd = 'curl -X POST -H Content-Type:application/json -d '
topo_toplevel_parts = [u'node', u'topology-id', u'link', u'topology-types', u'server-provided']
pcep_toplevel_parts = ['topology']
pcep_topology_parts = ['topology-id', 'topology-types', 'node']
string = "bgpls://IsisLevel2:1/type=node&as=65504&domain=505290270&router=0000.0000.0029"
odl_version_list = [
{'nitrogen': {'name': 'odl-bmp-monitor-config', 'revision': '2017-05-17'}},
{'carbon': {'name': "aaa-encrypt-service-config", 'revision': "2016-09-15"}},
{'boron': {'name': "openconfig-interfaces", 'revision': "2016-04-12"}},
{'beryllium': {'name': "odl-rsvp-parser-spi-cfg", 'revision':"2015-08-26"}},
{'lithium': {'name': "aaa-authn-model", 'revision': "2014-10-29"}},
{'helium': {'name': "opendaylight-topology", 'revision': "2013-10-30"}},
]
lsp07_xml = '''<input xmlns="urn:opendaylight:params:xml:ns:yang:topology:pcep">
<node>{pcc}</node>
<name>{name}</name>
<arguments>
<lsp xmlns="urn:opendaylight:params:xml:ns:yang:pcep:ietf:stateful">
<delegate>true</delegate>
<administrative>true</administrative>
</lsp>
<endpoints-obj>
<ipv4>
<source-ipv4-address>{src}</source-ipv4-address>
<destination-ipv4-address>{dst}</destination-ipv4-address>
</ipv4>
</endpoints-obj>
<ero>{ero}</ero>
</arguments>
<network-topology-ref xmlns:topo="urn:TBD:params:xml:ns:yang:network-topology">/topo:network-topology/topo:topology[topo:topology-id="pcep-topology"]</network-topology-ref>
</input>'''
lsp_sr_xml = '''<input xmlns="urn:opendaylight:params:xml:ns:yang:topology:pcep">
<node>{pcc}</node>
<name>{name}</name>
<arguments>
<lsp xmlns="urn:opendaylight:params:xml:ns:yang:pcep:ietf:stateful">
<delegate>true</delegate>
<administrative>true</administrative>
</lsp>
<endpoints-obj>
<ipv4>
<source-ipv4-address>{src}</source-ipv4-address>
<destination-ipv4-address>{dst}</destination-ipv4-address>
</ipv4>
<processing-rule>true</processing-rule>
</endpoints-obj>
<path-setup-type xmlns="urn:opendaylight:params:xml:ns:yang:pcep:ietf:stateful">
<pst>1</pst>
</path-setup-type>
<ero>{ero}</ero>
</arguments>
<network-topology-ref xmlns:topo="urn:TBD:params:xml:ns:yang:network-topology">/topo:network-topology/topo:topology[topo:topology-id="pcep-topology"]</network-topology-ref>
</input>'''
lsp_sr_update_xml = '''<input xmlns="urn:opendaylight:params:xml:ns:yang:topology:pcep">
<node>{pcc}</node>
<name>{name}</name>
<arguments>
<lsp xmlns="urn:opendaylight:params:xml:ns:yang:pcep:ietf:stateful">
<delegate>true</delegate>
<administrative>true</administrative>
</lsp>
<path-setup-type xmlns="urn:opendaylight:params:xml:ns:yang:pcep:ietf:stateful">
<pst>1</pst>
</path-setup-type>
<ero>{ero}</ero>
</arguments>
<network-topology-ref xmlns:topo="urn:TBD:params:xml:ns:yang:network-topology">/topo:network-topology/topo:topology[topo:topology-id="pcep-topology"]</network-topology-ref>
</input>'''
lspDelete_xml = '''<input xmlns="urn:opendaylight:params:xml:ns:yang:topology:pcep">
<node>{pcc}</node>
<name>{name}</name>
<network-topology-ref xmlns:topo="urn:TBD:params:xml:ns:yang:network-topology">/topo:network-topology/topo:topology[topo:topology-id="pcep-topology"]</network-topology-ref>
</input>'''
lsp07_xml_helium = '''<input>
<node>{pcc}</node>
<name>{name}</name>
<arguments>
<lsp xmlns:stateful="urn:opendaylight:params:xml:ns:yang:pcep:ietf:stateful">
<delegate>true</delegate>
<administrative>true</administrative>
</lsp>
<endpoints-obj>
<ipv4>
<source-ipv4-address>{src}</source-ipv4-address>
<destination-ipv4-address>{dst}</destination-ipv4-address>
</ipv4>
</endpoints-obj>
<ero>{ero}</ero>
</arguments>
<network-topology-ref xmlns:topo="urn:TBD:params:xml:ns:yang:network-topology">/topo:network-topology/topo:topology[topo:topology-id="pcep-topology"]</network-topology-ref>
</input>'''
lsp07update_xml = '''<input>
<node>{pcc}</node>
<name>{name}</name>
<arguments>
<lsp xmlns:stateful="urn:opendaylight:params:xml:ns:yang:pcep:ietf:stateful">
<delegate>true</delegate>
<administrative>true</administrative>
</lsp>
<ero>{ero}</ero>
</arguments>
<network-topology-ref xmlns:topo="urn:TBD:params:xml:ns:yang:network-topology">/topo:network-topology/topo:topology[topo:topology-id="pcep-topology"]</network-topology-ref>
</input>'''
ero_xml = '''<subobject>
<loose>false</loose>
<ip-prefix><ip-prefix>{hop}/32</ip-prefix></ip-prefix>
</subobject>
'''
ero_sr_xml = '''<subobject>
<loose>false</loose>
<sid-type xmlns="urn:opendaylight:params:xml:ns:yang:pcep:segment:routing">ipv4-node-id</sid-type>
<m-flag xmlns="urn:opendaylight:params:xml:ns:yang:pcep:segment:routing">true</m-flag>
<sid xmlns="urn:opendaylight:params:xml:ns:yang:pcep:segment:routing">{sid}</sid>
<ip-address xmlns="urn:opendaylight:params:xml:ns:yang:pcep:segment:routing">{hop}</ip-address>
</subobject>'''
class Puck():
""" Name Node was taken,
holds path information to neighbors,
every node spawns of Pucks as their neighbors,
not a one-to-one with nodes.
"""
def __init__(self, id = '', end = '',pathlist = [], metriclist = [], topo = [], past = []):
self.id = id
self.end = end
self.pathlist = pathlist
self.metriclist = metriclist
self.topo = topo
self.pastlist = past
debug_modules = ['node_structure']
class debugFilter(logging.Filter):
''' limits debug output to selected modules '''
def filter(self, record):
if record.levelname != 'DEBUG':
return True
else:
return record.funcName in debug_modules
class MyFormatter(logging.Formatter):
''' Gives us a dot instead of a comma in the log printout '''
converter = time.gmtime
def formatTime(self, record, datefmt=None):
ct = self.converter(record.created)
if datefmt:
s = time.strftime(datefmt, ct)
else:
t = time.strftime("%Y-%m-%d %H:%M:%S", ct)
s = "%s.%03d" % (t, record.msecs)
return s
LOGGING = {
'version': 1,
'filters': {
'module_filter': {
'()': debugFilter
}
},
'formatters': {
'standard': {
'format': '%(asctime)s [%(levelname)s] %(name)s: %(message)s'
},
'to_screen': {
'format': '[%(levelname)s] %(funcName)s: %(message)s'
},
'to_file':{
'()':MyFormatter,
'format' : '%(process)d %(asctime)12s UTC %(name)s:%(funcName)-12s %(levelname)s: %(message)s'
}
},
'handlers': {
'console': {
'class': 'logging.StreamHandler',
'filters': ['module_filter'],
'formatter':'to_screen'
},
'logtofile':{
'class': 'logging.handlers.RotatingFileHandler',
'filters': ['module_filter'],
'formatter':'to_file',
'filename': log_file,
'maxBytes': log_size,
'backupCount': 3,
'encoding': 'utf8'
}
},
'root': {
'level': log_level,
#'handlers': ['console','logtofile']
'handlers': ['logtofile']
},
}
def dict_to_file(mdict, file):
with open(file,'w') as f:
f.write(json.dumps(mdict))
logging.info("writing %s" % mdict)
def file_to_dict(file):
mdict = {}
if os.path.exists(file):
with open(file,'r') as f:
string = f.read()
user_files = json.loads(string)
logging.info("reading %s" % user_files)
for item in user_files:
mdict.update({item:user_files[item]})
return mdict
def version_check():
"""modified from odl_gateway"""
url = get_version
result = get_url(url)
if True:
name_list = [mod['name'] for mod in result['modules']['module']]
rev_list = [mod['revision'] for mod in result['modules']['module']]
for odl_ver in odl_version_list:
version = odl_ver.keys()[0]
if odl_ver[version]['name'] in name_list:
if odl_ver[version]['revision'] == rev_list[name_list.index(odl_ver[version]['name'])]:
logging.info("Found ODL Release: %s" % version)
return version
return ""
def netconf_list(dummy=None):
'''modified from from odl_gateway'''
odl_version = version_check()
if odl_version in ['beryllium', 'boron', 'carbon', 'nitrogen']:
url = get_node_topo
else:
url = get_nodes
result = get_url(url)
conf_list = []
if True:
if isinstance(result, dict):
if 'nodes' in result.keys():
try:
for node in result['nodes']['node']:
conf_list.append(node['id'])
except:
logging.error("format error in netconf node-list: %s" % str(result))
pass
elif 'topology' in result.keys():
try:
for node in result['topology'][0]['node']:
conf_list.append(node['node-id'])
except:
logging.error("format error in netconf node-list: %s" % str(result))
pass
return conf_list
def get_netconf():
'''get configs for nodes added to controller'''
def get_config(url_list, match):
for url in url_list:
result = get_url(url.format(**temp))
if result != {}:
reply = keyd_dict_walker(result, match)
if reply != -1:
return reply
return -1
netconf_nodes = netconf_list()
node_configs = {}
rid_dict = {}
for node in netconf_nodes:
if node != "controller-config":
temp = {'node':node}
try:
sid = get_config([get_node_isis_config, get_node_ospf_config], 'prefix-sid')
rid = get_config([get_node_bgp_config], 'router-id')
logging.info('rid: %s, sid: %s' % (rid, sid))
if sid != -1:
node_configs.update({node: sid})
logging.info("got netconf data for: %s" % node)
if rid != -1:
rid_dict.update({rid: sid})
logging.info("router-id: %s" % rid)
else:
logging.info("No sid for: %s" % node)
else:
logging.error("No rid for: %s" % node)
except:
logging.error("failure to get netconf data for: %s" % node)
return node_configs, rid_dict
def keyd_dict_walker(mdict, key):
""" walk the dict and find value of key """
#print " being called "
if key in mdict.keys():
return mdict[key]
else:
for keys in mdict.keys():
if type(mdict[keys]) == dict:
temp = keyd_dict_walker(mdict[keys],key)
if temp != -1:
return temp
break
elif type(mdict[keys]) == list:
for item in mdict[keys]:
if type(item) == dict:
temp = keyd_dict_walker(item,key)
if temp != -1:
return temp
break
return -1
def node_sr_update(node_list):
def update(node, temp_sid):
if 'value' in temp_sid.keys():
node_list[node_list.index(node)] = node._replace(sid=temp_sid['value'])
logging.info("SR sid updated for: %s from netconf" % node.name)
elif 'sid-value' in temp_sid.keys():
node_list[node_list.index(node)] = node._replace(sid=temp_sid['sid-value'])
logging.info("SR sid updated for: %s from netconf" % node.name)
else:
logging.error("No sid value for: %s - %s" % (node.name, temp_sid))
# BGP Check
bgp_rib = MyBGP()
sid_dict = bgp_rib.get_sr_info()
my_local_sids = file_to_dict(sid_saves)
# sid_dict = {}
if len(sid_dict) > 0:
for node in node_list:
if node.loopback in sid_dict.keys():
node_list[node_list.index(node)] = node._replace(sid=sid_dict[node.loopback])
logging.info('SR sid updated for: {} from bgp'.format(node.name))
else:
logging.error('No BGP SID for: {}'.format(node.name))
else:
node_configs, rid_dict = get_netconf()
for node in node_list:
temp_sid = node_configs.get(node.name,{})
rid_sid = rid_dict.get(node.loopback,{})
if len(temp_sid) >0:
update(node, temp_sid)
elif len(rid_sid) >0:
update(node, rid_sid)
elif my_local_sids.get(node.loopback):
node_list[node_list.index(node)] = node._replace(sid=my_local_sids[node.loopback]['sid'])
logging.info('SR sid updated for: {} from static'.format(node.name))
else:
logging.error("No sid for: %s" % node.name)
return node_list
def get_loop_list(path_list):
""" get loopbacks for nodes in pathlist"""
logging.info("Path: %s" % path_list)
loop_list = []
#path_list.pop(0)
for name in path_list:
try:
temp_loop = node_list[[node.name for node in node_list].index(name)].loopback
if temp_loop not in loop_list:
loop_list.append(temp_loop)
except ValueError:
logging.error("Name not in loop_list: %s" % name)
try:
loop_list.pop(0)
except IndexError:
logging.error("Empty Loop-list for :%s" % path_list)
logging.info("Loop list: %s" % loop_list)
return loop_list
def get_sid_list(path_list):
""" get sids for nodes in pathlist"""
logging.info("Path: %s" % path_list)
sid_list = []
#path_list.pop(0)
for name in path_list:
try:
temp_sid = node_list[[node.name for node in node_list].index(name)].sid
if temp_sid not in sid_list:
sid_list.append(temp_sid)
except ValueError:
logging.error("Name not in sid_list: %s" % name)
try:
sid_list.pop(0)
except IndexError:
logging.error("Empty Sid-list for :%s" % path_list)
logging.info("SID list: %s" % sid_list)
return sid_list
##########
def name_check(address):
'''check if a name is mapped to address'''
import socket
try:
name = socket.gethostbyaddr(address)[0]
return True, name
except:
return False, ""
def ipv4_in_network(ip, network):
'''check if the ip is in the network'''
def mask_check(num):
''' check bits in mask and how many octets we need to match'''
oct = num /8
bits = num % 8
return oct, bits
mask = network.split('/')[-1]
net = network.split('/')[0]
ip_oct = ip.split('.')
net_oct = net.split('.')
oct, bits = mask_check(int(mask))
for i in range(oct):
if ip_oct[i] != net_oct[i]:
return False
# Are you still here?
if oct == 4 or bits == 0:
return True
ip_bin = bin(int(ip_oct[oct]))
net_bin = bin(int(net_oct[oct]))
if ip_bin[2:bits+2] == net_bin[2:bits+2]:
return True
else:
return False
def get_url(url):
'''request url'''
headers = {'Content-type': 'application/json'}
try:
response = requests.get(url, headers = headers, auth = (odl_user,odl_password), verify=False)
logging.info("Url get Status: %s" % response.status_code)
if response.status_code in [200]:
return response.json()
else:
logging.info(str(response.text))
return {}
except requests.exceptions.ConnectionError, e:
logging.error('Connection Error: %s' % e.message)
return {}
def locations_of_substring(string,target, offset=0):
'''recursive counter of all occurances'''
temp = []
start = string.find(target)
if start != -1:
temp = [start+offset]
temp += locations_of_substring(string[start+len(target):],target, offset +start+len(target))
return temp
def html_style(string):
""" find arguments and build list of dicts """
first = locations_of_substring(string,'/')
start = locations_of_substring(string,'&')
end = locations_of_substring(string,'=')
start.insert(0,first[-1])
return chop_chop(start,end,string)
def chop_chop(start, end, string):
""" Build value pair dict from restconf response """
mydict = {}
while len(start)>0:
arg = string[start[0]+1:end[0]]
if len(start) > 1:
inext = start[1]
else:
inext = len(string)
value = string[end[0]+1:inext]
mydict.update({arg:value})
start.pop(0)
end.pop(0)
return mydict
def find_link2(local, remote, address):
""" Determine what node is connected to which """
for link_dict in link_list:
if link_dict['local-router'] == local and link_dict['remote-router'] == remote:
try:
return link_dict[address]
except:
return -1
return(-1)
def add_node(node_list, name, id, loopback, portlist, pcc, pcep_type, prefix, sid):
id_list = [node.id for node in node_list]
if id in id_list:
index = id_list.index(id)
node = node_list[index]
if name != node.name:
logging.error('Name does not match for same ID: {} was {}'.format(name, node.name))
if portlist != node.portlist or prefix != node.prefix:
node = node._replace(portlist=sorted(list(set(node.portlist+portlist))), prefix=sorted(list(set(node.prefix+prefix))))
node_list[index] = node
logging.info("Updated node: %s" % str(node))
else:
node = Node(name, id, loopback, sorted(portlist), pcc, pcep_type, sorted(prefix), sid)
logging.info("New node: %s" % str(node))
node_list.append(node)
def node_structure(my_topology, debug = 2):
""" learn (print out) the topology structure """
node_list = []
pcc_list = get_pcep_type(debug)
logging.debug("pcc_list: %s" % pcc_list)
try:
node_dictlist = my_topology['topology'][0]['node']
if len(pcc_list) > 0:
loops = [pnode['loopback'] for pnode in pcc_list]
else:
loops = []
logging.debug("Loopbacks of nodes: %s" % loops)
except:
logging.info("We have no nodes in our BGP-LS topology")
return []
for nodes in my_topology['topology'][0]['node']:
#try:
node_dict = html_style(nodes['node-id'])
#logging.debug("node_dict: %s" % node_dict)
prefix_array = []
if 'prefix' in nodes['l3-unicast-igp-topology:igp-node-attributes'].keys():
for prefix in nodes['l3-unicast-igp-topology:igp-node-attributes']['prefix']:
prefix_array.append(prefix['prefix'])
#logging.debug("prefix: %s, metric: %s " % (prefix['prefix'],prefix['metric']))
node_ports = []
if 'termination-point' in nodes.keys():
for link in nodes['termination-point']:
#logging.debug("port: %s " % link['tp-id'])
if 'tp-id' in link.keys():
port_dict = html_style(link['tp-id'])
if 'ipv4' in port_dict.keys():
node_ports.append(port_dict['ipv4'])
else:
logging.error("Node {0} is missing 'termination-point' ".format(node_dict['router']))
index = -1
router_id = ""
name = ""
pcc = ""
pcep_type = ""
sid = ""
for keys in nodes['l3-unicast-igp-topology:igp-node-attributes'].keys():
if keys == 'router-id':
router_id = nodes['l3-unicast-igp-topology:igp-node-attributes']['router-id'][0]
if router_id in loops:
index = loops.index(router_id)
pcc = pcc_list[index]['pcc']
pcep_type = pcc_list[index]['pcep_type']
elif keys == 'name':
name = nodes['l3-unicast-igp-topology:igp-node-attributes']['name']
if name == "":
name = node_dict['router']
if 'router-id' in nodes['l3-unicast-igp-topology:igp-node-attributes'].keys():
success, hname = name_check(nodes['l3-unicast-igp-topology:igp-node-attributes']['router-id'][0])
if success:
name = hname
add_node(node_list, name, node_dict['router'], router_id, node_ports, pcc, pcep_type, prefix_array, sid)
# node = Node(name,node_dict['router'],router_id,node_ports,pcc, pcep_type, prefix_array, sid)
# logging.info("New node: %s" % str(node))
# node_list.append(node)
logging.info(node_list)
return node_list
def pseudo_net_build(node_list):
pseudo_net = []
for node in node_list:
if node.name == node.id:
for owner in node_list:
if owner.id == node.id[:len(owner.id)] and owner.name != node.name:
pseudo_network = '0.0.0.0/32'
for network in owner.prefix:
#logging.info("calling ipv4_in_network for: %s - owner:%s" %(node.name,owner.name))
if node.portlist != [] and ipv4_in_network(node.portlist[0], network):
pseudo_network = network
node_list[node_list.index(node)] = node._replace(name= owner.name+node.id[len(owner.id):],pcep_type="pseudonode",prefix=pseudo_network)
pseudo_net += node.portlist
logging.info("Owner of Pseduo: %s is: %s" % (node.name, owner.name))
break
logging.info(pseudo_net)
return pseudo_net
def node_links(my_topology, node_list, bgp=False, metric='igp'):
""" Dumps link info """
def metric_test(attributes, metric):
""" Pick a metric to return """
temp = {'te-isis':10, 'te-ospf':10}
if 'metric' in attributes.keys():
temp.update({'metric': attributes['metric']})
if 'ospf-topology:ospf-link-attributes' in attributes.keys() and 'ted' in attributes['ospf-topology:ospf-link-attributes']:
temp.update({'te-ospf': attributes['ospf-topology:ospf-link-attributes']['ted'].get('te-default-metric', 10)})
if 'isis-topology:isis-link-attributes' in attributes.keys() and 'ted' in attributes['isis-topology:isis-link-attributes']:
temp.update({'te-isis': attributes['isis-topology:isis-link-attributes']['ted'].get('te-default-metric', 10)})
if metric == 'igp':
return temp.get('metric', 10)
elif metric == 'te':
if temp['te-isis'] != 10:
return temp['te-isis']
else:
return temp['te-ospf']
net = {}
link_list = []
sr_enabled = [node.id for node in node_list if node.sid != '']
try:
for link in my_topology['topology'][0]['link']:
link_dict = html_style(link['link-id'])
link_list.append(link_dict)
if bgp or set([link_dict['local-router'], link_dict['remote-router']]).issubset(set(sr_enabled)):
if link_dict['local-router'] in net.keys():
net[link_dict['local-router']].update({link_dict['remote-router']: metric_test(link['l3-unicast-igp-topology:igp-link-attributes'], metric)})
else:
net.update({link_dict['local-router']: {link_dict['remote-router']: metric_test(link['l3-unicast-igp-topology:igp-link-attributes'], metric)}})
except:
logging.info("We have no links in our BGP-LS topology")
return net, link_list
def copyTopo(node_dict, ref_nodelist):
""" copy coordinates from ref topo """
for node in ref_nodelist:
if node_dict['name'] == node['name']:
for key in ['latitude','longitude','type','icon','y','x']:
node_dict[key] = node[key]
def pseudo_net_check(address):
'''add pseduo node hop in hoplist'''
addr = address.split('/')[0]
for node in pseudo_list:
#for prefix in node.prefix:
if ipv4_in_network(addr, node.prefix):
logging.info("Found: %s" % node.name)
return True, node.name
return False, ''
def list_pcep_lsp(node_list, debug):
""" reads pcep db from netowrk and provies a list of lsp's """
my_pcep = get_url(get_pcep)
loops = [pnode.loopback for pnode in node_list]
lsplist = []
try:
for node in my_pcep['topology'][0]['node']:
pcc = node['network-topology-pcep:path-computation-client']['ip-address']
if 'reported-lsp' in node['network-topology-pcep:path-computation-client'].keys():
for path in node['network-topology-pcep:path-computation-client']['reported-lsp']:
name = path['name']
ip_hoplist = []
sid_list = []
if 'odl-pcep-ietf-stateful07:lsp' in path['path'][0].keys():
if 'operational' in path['path'][0]['odl-pcep-ietf-stateful07:lsp'].keys():
oper = path['path'][0]['odl-pcep-ietf-stateful07:lsp']['operational']
# if path['path'][0]['odl-pcep-ietf-stateful07:lsp']['operational'] == 'up':
if oper == 'up' or oper == 'active':
if 'rro' in path['path'][0].keys():
route_obj = path['path'][0]['rro']['subobject']
else:
route_obj = path['path'][0]['ero']['subobject']
# for nexthop in path['path'][0]['ero']['subobject']:
for nexthop in route_obj:
if 'ip-prefix' in nexthop.keys():
ip_hoplist.append(nexthop['ip-prefix']['ip-prefix'])
if 'odl-pcep-segment-routing:sid-type' in nexthop.keys():
if nexthop['odl-pcep-segment-routing:sid-type'] == 'ipv4-node-id':
ip_hoplist.append(nexthop['odl-pcep-segment-routing:ip-address'])
sid_list.append(nexthop['odl-pcep-segment-routing:sid'])
elif nexthop['odl-pcep-segment-routing:sid-type'] == 'ipv4-adjacency':
ip_hoplist.append(nexthop['odl-pcep-segment-routing:remote-ip-address'])
sid_list.append(nexthop['odl-pcep-segment-routing:sid'])
hoplist = []
originate = name_from_pcc(pcc, node_list, debug)
if originate != '':
hoplist.append(originate)
for interface in ip_hoplist:
temp = find_node(node_list, interface,debug)
if temp == None:
try:
index = loops.index(interface)
temp = node_list[index].name
except ValueError:
logging.error("Interface not found: %s" % interface)
logging.info("interface: %s, temp: %s" %(interface, temp))
#if temp in pseudo_net:
success, pname = pseudo_net_check(interface)
if success:
hoplist.append(pname)
hoplist.append(temp)
my_lsp = LSP(name, pcc, hoplist, ip_hoplist, sid_list)
lsplist.append(my_lsp)
except:
logging.info("We have no nodes in our PCEP Topology")
return lsplist
def find_node(node_list, interface, debug):
""" find which node and interface belongs to """
for node in node_list:
if "pseudonode" not in node:
for port in node.portlist:
if port == interface.split('/')[0]:
return node.name
def find_link(my_topology, local, remote, debug = 2):
""" Determine what node is connected to which """
for link in my_topology['topology'][0]['link']:
link_dict = html_style(link['link-id'])
if link_dict['local-router'] == local and link_dict['remote-router'] == remote:
try:
return link_dict['ipv4-neigh']
except:
return -1
return(-1)
def map_name2node(node_list, name):
""" find node id from name """
for node in node_list:
if name == node.name:
return node.id
return '0000.0000.0000'
def map_node2name(node_list, node_id):
""" find name from node-id """
for node in node_list:
if node_id == node.id:
return node.name
return "none"
def reduce_topo(topo, begone):
""" Remove node from topo """
new_topo = deepcopy(topo)
for nodes in new_topo:
if begone in new_topo[nodes]:
del new_topo[nodes][begone]
del new_topo[begone]
return new_topo
def nikstra(this_node):
""" find all paths between start and end) """
if this_node.id == this_node.end:
return
else:
nbor_list = []
new_topo = reduce_topo(this_node.topo, this_node.id)
for neighbor in this_node.topo[this_node.id]:
if neighbor == this_node.end:
this_node.pathlist.append([this_node.id,this_node.end])
this_node.metriclist.append(this_node.topo[this_node.id][this_node.end])
else:
# full init required here - due to python feature :)
nbor = Puck()
nbor.id = neighbor
nbor.end = this_node.end
nbor.pathlist = []
nbor.metriclist = []
nbor.pastlist = []
nbor.pastlist.append(this_node.id)
nbor.topo = deepcopy(new_topo)
nbor_list.append(nbor)
nikstra(nbor)
for path in nbor.pathlist:
path.insert(0,this_node.id)
for i in range(len(nbor.metriclist)):
nbor.metriclist[i] = nbor.metriclist[i] + this_node.topo[this_node.id][nbor.id]
for nbor in nbor_list:
for path in nbor.pathlist:
if path != []:
this_node.pathlist.append(path)
for i in range(len(nbor.metriclist)):
this_node.metriclist.append(nbor.metriclist[i])
return
def translate_pathnames(pathlist, debug):
""" Insert nodenames in pathlist """
npathlist = []
for path in pathlist:
npath = []
for nodeid in path:
npath.append(map_node2name(node_list, nodeid))
npathlist.append(npath)
return npathlist
def translate_pathids(path, debug):
""" Insert nodeids in pathlist """
npath = []
for nodename in path:
npath.append(map_name2node(node_list, nodename))
return npath
def hop_not_source(linklist, hop):
""" make sure hop is not a source """
for links in linklist:
if links['source'] == hop:
return False
return True
def translate_topo(node_list, net, debug):
""" returns net topology in names """
name_net = {}
for nodeid in net.keys():
name_hops = {}
for hopid in net[nodeid]:
name_hops.update({map_node2name(node_list, hopid):net[nodeid][hopid]})
name_net.update({map_node2name(node_list, nodeid):name_hops})
return name_net
def get_pcep_type(debug):
'''update our node_list have pcep info'''
my_pcep = get_url(get_pcep)
pcc_list = []
try:
for node in my_pcep['topology'][0]['node']:
loopback = node['network-topology-pcep:path-computation-client']['ip-address']
pcc = node['node-id']
if 'odl-pcep-ietf-stateful07:stateful' in node['network-topology-pcep:path-computation-client']['stateful-tlv'].keys():
pcep_type = '07'
else:
pcep_type = '02'
pcc_list.append({'pcc':pcc, 'loopback':loopback,'pcep_type':pcep_type} )
except:
logging.info("We have no nodes in our PCEP Topology")
return pcc_list
def lsp_create_json(src, dst, name_of_lsp , pcc, debug):
""" build a json structure to create LSPs """
lsp_dict = {}
lsp_dict.update({"input":{}})
lsp_dict["input"].update({"node":pcc,
"name": name_of_lsp,