def updates(self, grouped):
attr_af_nlri = self._new_attr_af_nlri
new_attr = self._new_attribute
# Get ready to accept more data
self._new_nlri = {}
self._new_attr_af_nlri = {}
self._new_attribute = {}
# if we need to perform a route-refresh, sending the message
# to indicate the start of the announcements
rr_announced = []
for afi, safi in self._enhanced_refresh_start:
rr_announced.append((afi, safi))
yield Update(RouteRefresh(afi, safi, RouteRefresh.start),
Attributes())
# generating Updates from what is in the RIB
for attr_index, per_family in attr_af_nlri.items():
for family, changes in per_family.items():
if not changes:
continue
# only yield once we have a consistent state, otherwise it will go wrong
# as we will try to modify things we are iterating over and using
attributes = new_attr[attr_index]
if family == (AFI.ipv4, SAFI.unicast) and grouped:
yield Update([change.nlri for change in changes.values()],
attributes)
else:
for change in changes.values():
yield Update(
[
change.nlri,
],
attributes,
)
# If we are performing a route-refresh, indicating that the
# update were all sent
if rr_announced:
for afi, safi in rr_announced:
self._enhanced_refresh_start.remove((afi, safi))
yield Update(RouteRefresh(afi, safi, RouteRefresh.end),
Attributes())
for change in self._enhanced_refresh_delay:
self.add_to_rib(change, True)
self._enhanced_refresh_delay = []
for update in self.updates(grouped):
yield update
def api_refresh(self, command):
tokens = formated(command).split(' ')[2:]
if len(tokens) != 2:
return False
afi = AFI.value(tokens.pop(0))
safi = SAFI.value(tokens.pop(0))
if afi is None or safi is None:
return False
return RouteRefresh(afi, safi)
def updates(self, grouped):
if self._changes:
dict_nlri = self._modify_nlri
for family in self._seen:
for change in self._seen[family].itervalues():
if change.index() not in self._modify_nlri:
change.nlri.action = OUT.WITHDRAW
self.insert_announced(change, True)
for new in self._changes:
self.insert_announced(new, True)
self._changes = None
# end of changes
rr_announced = []
for afi, safi in self._enhanced_refresh_start:
rr_announced.append((afi, safi))
yield Update(RouteRefresh(afi, safi, RouteRefresh.start),
Attributes())
dict_sorted = self._modify_sorted
dict_nlri = self._modify_nlri
dict_attr = self._cache_attribute
for attr_index, full_dict_change in dict_sorted.items():
if self.cache:
dict_change = {}
for nlri_index, change in full_dict_change.iteritems():
family = change.nlri.family()
announced = self._seen.get(family, {})
if change.nlri.action == OUT.ANNOUNCE:
if nlri_index in announced:
old_change = announced[nlri_index]
# it is a duplicate route
if old_change.attributes.index(
) == change.attributes.index(
) and old_change.nlri.nexthop.index(
) == change.nlri.nexthop.index():
continue
elif change.nlri.action == OUT.WITHDRAW:
if nlri_index not in announced:
if dict_nlri[
nlri_index].nlri.action == OUT.ANNOUNCE:
continue
dict_change[nlri_index] = change
else:
dict_change = full_dict_change
if not dict_change:
continue
attributes = dict_attr[attr_index].attributes
# we NEED the copy provided by list() here as insert_announced can be called while we iterate
changed = list(dict_change.itervalues())
if grouped:
updates = []
nlris = []
for change in dict_change.values():
if change.nlri.afi == AFI.ipv4:
nlris.append(change.nlri)
continue
updates.append(Update([change.nlri], attributes))
if nlris:
updates.append(Update(nlris, attributes))
nlris = []
for change in changed:
nlri_index = change.index()
del dict_sorted[attr_index][nlri_index]
del dict_nlri[nlri_index]
# only yield once we have a consistent state, otherwise it will go wrong
# as we will try to modify things we are using
for update in updates:
yield update
else:
updates = []
for change in changed:
updates.append(Update([
change.nlri,
], attributes))
nlri_index = change.index()
del dict_sorted[attr_index][nlri_index]
del dict_nlri[nlri_index]
# only yield once we have a consistent state, otherwise it will go wrong
# as we will try to modify things we are using
for update in updates:
yield update
if self.cache:
announced = self._seen
for change in changed:
if change.nlri.action == OUT.ANNOUNCE:
announced.setdefault(change.nlri.family(),
{})[change.index()] = change
else:
family = change.nlri.family()
if family in announced:
announced[family].pop(change.index(), None)
if rr_announced:
for afi, safi in rr_announced:
self._enhanced_refresh_start.remove((afi, safi))
yield Update(RouteRefresh(afi, safi, RouteRefresh.end),
Attributes())
for change in self._enhanced_refresh_delay:
self.insert_announced(change, True)
self.enhanced_refresh_delay = []
for update in self.updates(grouped):
yield update
def updates (self, grouped):
if self._changes:
dict_nlri = self._modify_nlri
for family in self._seen:
for change in six.itervalues(self._seen[family]):
if change.index() not in self._modify_nlri:
change.nlri.action = OUT.WITHDRAW
self.insert_announced(change,True)
for new in self._changes:
self.insert_announced(new,True)
self._changes = None
# end of changes
rr_announced = []
for afi,safi in self._enhanced_refresh_start:
rr_announced.append((afi,safi))
yield Update(RouteRefresh(afi,safi,RouteRefresh.start),Attributes())
dict_sorted = self._modify_sorted
dict_nlri = self._modify_nlri
dict_attr = self._cache_attribute
for attr_index,dict_change in dict_sorted.items():
if not dict_change:
continue
updates = {}
changed = dict_change.values()
attributes = dict_attr[attr_index].attributes
for change in dict_change.values():
updates.setdefault(change.nlri.family(),[]).append(change.nlri)
nlri_index = change.index()
# only yield once we have a consistent state, otherwise it will go wrong
# as we will try to modify things we are iterating over and using
if grouped:
for nlris in six.itervalues(updates):
yield Update(nlris, attributes)
else:
for nlris in six.itervalues(updates):
for nlri in nlris:
yield Update([nlri,], attributes)
if self.cache:
announced = self._seen
for change in changed:
if change.nlri.action == OUT.ANNOUNCE:
announced.setdefault(change.nlri.family(),{})[change.index()] = change
else:
family = change.nlri.family()
if family in announced:
announced[family].pop(change.index(),None)
self._modify_sorted = {}
self._modify_nlri = {}
if rr_announced:
for afi,safi in rr_announced:
self._enhanced_refresh_start.remove((afi,safi))
yield Update(RouteRefresh(afi,safi,RouteRefresh.end),Attributes())
for change in self._enhanced_refresh_delay:
self.insert_announced(change,True)
self.enhanced_refresh_delay = []
for update in self.updates(grouped):
yield update
