def remove_requirement(self, name, prefix):
"""
@API
:name = unique identifier of a requirement
:prefix = destination prefix of the requirement
"""
if not self.simple_req.get(prefix):
LOG.critical("No requirement for this prefix : " + str(prefix))
else:
index = self.get_index_by_name(name, prefix)
if index != -1:
del self.simple_req[prefix][index]
self.change_pfx.append(prefix)
else:
LOG.critical("No prefix has this name : " + str(name))
def check_network(config, Error):
try:
fibbing_ctrl = config.get('fibbing-controller')
hosts_link = config.get('hosts-link')
links = config.get('links')
main_controller = config.get('main-controller')
ospf_links = config.get('ospf-links')
routers = config.get('routers')
routerid = []
ospf_router = []
for r in routers:
if r.get('ospf').get('enable'):
if r.get('ospf').get('router-id') in routerid:
LOG.error('Router id already used %s' %
r.get('ospf').get('router-id'))
Error = True
else:
routerid.append(r.get('ospf').get('router-id'))
else:
LOG.warning(
'For this framework all routers must have ospf enable')
ospf_router.append(r.get('name'))
link_key_map = {}
for link in links:
if not link.get('src').get('name'):
LOG.error('A link must have a src router name')
Error = True
if not link.get('src').get('ip'):
LOG.error('A link must have a src router ip')
Error = True
if not link.get('dest').get('name'):
LOG.error('A link must have a dest router name')
Error = True
if not link.get('dest').get('ip'):
LOG.error('A link must have a dest router ip')
Error = True
link_key_map[link.get('name')] = link
ospf_config = {}
for o_l in ospf_links:
link = link_key_map.get(o_l.get('name'))
if link.get('src').get('name') not in ospf_router or \
link.get('dest').get('name') not in ospf_router:
LOG.error(
'A link with ospf configured must have both src and dest with ospf enabled'
)
Error = True
src_o_conf = o_l.get('src').get('ospf')
dest_o_conf = o_l.get('dest').get('ospf')
if src_o_conf.get('area') not in ospf_config:
ospf_config[src_o_conf.get('area')] = src_o_conf
else:
area_conf = ospf_config[src_o_conf.get('area')]
if src_o_conf.get('hello-interval') != area_conf.get('hello-interval') or\
src_o_conf.get('dead-interval') != area_conf.get('dead-interval') :
LOG.error(
'Hello and dead interval must be the same for the same broadcast domain'
)
Error = True
if dest_o_conf.get('area') not in ospf_config:
ospf_config[dest_o_conf.get('area')] = dest_o_conf
else:
area_conf = ospf_config[dest_o_conf.get('area')]
if dest_o_conf.get('hello-interval') != area_conf.get('hello-interval') or\
dest_o_conf.get('dead-interval') != area_conf.get('dead-interval') :
LOG.error(
'Hello and dead interval must be the same for the same broadcast domain'
)
Error = True
controller_o_conf = fibbing_ctrl.get('controller-config').get('ospf')
if controller_o_conf.get('area') not in ospf_config:
LOG.error(
'The Fibbing controller should be in the same area of at least some other router'
)
Error = True
else:
area_conf = ospf_config[controller_o_conf.get('area')]
if controller_o_conf.get('hello-interval') != area_conf.get('hello-interval') or\
controller_o_conf.get('dead-interval') != area_conf.get('dead-interval') :
LOG.error(
'Hello and dead interval must be the same for the same broadcast domain'
)
Error = True
if not main_controller:
LOG.error(
'The host acting as the main controller must be specified')
Error = True
return Error
except Exception as e:
LOG.critical('Error :' + str(e))
Error = True
return Error
def complete_path(data, Requirement, destRouter):
"""
@API
function called by the NMCore to
perform path expansion of :Requirement
:data is the network config from ConfD Agent
"""
routers = []
for r in data.get('routers'):
if r.get('ospf6').get('enable'):
routers.append(r.get('name'))
ospf_link = []
for link in data.get('ospf-links'):
ospf_link.append(link.get('name'))
edges = []
for link in data.get('link'):
if link.get('name') in ospf_link:
src = link.get('src')
dest = link.get('dest')
if link.get('bidirectional'):
edges.append((src.get('name'), dest.get('name'),
int(link.get('cost')), 'bidirectional'))
edges.append((dest.get('name'), src.get('name'),
int(link.get('cost')), 'bidirectional'))
else:
edges.append((src.get('name'), dest.get('name'),
int(src.get('cost')), 'unidirectional'))
edges.append((dest.get('name'), src.get('name'),
int(dest.get('cost')), 'unidirectional'))
for i in range(len(Requirement) - 1):
# remove edges already in the Requirement
if Requirement[i] != '*' and Requirement[i + 1] != '*':
edge = find_edge(Requirement[i], Requirement[i + 1], edges)
index = edges.index(edge)
del edges[index]
edge = find_edge(Requirement[i + 1], Requirement[i], edges)
index = edges.index(edge)
del edges[index]
# build graph
graph = Graph()
for router in routers:
graph.add_node(router)
for edge in edges:
if edge[3] == 'unidirectional':
graph.add_edge_unidirectional(edge[0], edge[1], edge[2])
else:
graph.add_edge(edge[0], edge[1], edge[2])
try:
Simple_path_req = get_simple_path_req(Requirement, destRouter, graph)
except KeyError:
LOG.critical('Could not solve path expansion for ' + str(Requirement))
return False
LOG.info('Success path expansion...')
LOG.info('Path : ' + str(Simple_path_req) + ' for :' + str(destRouter))
return Simple_path_req
