def update(self, data=None):
"""
Updates topology
Links are not deleted straightaway but set as "down"
"""
Link, Node = self.link_model, self.node_model
diff = self.diff(data)
status = {'added': 'up', 'removed': 'down', 'changed': 'up'}
action = {'added': 'add', 'changed': 'change', 'removed': 'remove'}
try:
added_nodes = diff['added']['nodes']
except TypeError:
added_nodes = []
for node_dict in added_nodes:
node = Node.count_address(node_dict['id'], topology=self)
# if node exists skip to next iteration
if node: # pragma no cover
continue
# if node doesn't exist create new
addresses = [node_dict['id']]
addresses += node_dict.get('local_addresses', [])
properties = node_dict.get('properties', {})
node = self._create_node(addresses=addresses,
properties=properties)
if 'label' in node_dict:
node.label = node_dict.get('label')
node.full_clean()
node.save()
for section, graph in sorted(diff.items()):
# if graph is empty skip to next one
if not graph:
continue
for link_dict in graph['links']:
changed = False
link = Link.get_from_nodes(link_dict['source'],
link_dict['target'],
topology=self)
# if link does not exist create new
if not link:
source = Node.get_from_address(link_dict['source'], self)
target = Node.get_from_address(link_dict['target'], self)
link = self._create_link(
source=source,
target=target,
cost=link_dict['cost'],
properties=link_dict.get('properties', {}),
topology=self,
)
changed = True
# if status of link is changed
if self.link_status_changed(link, status[section]):
link.status = status[section]
changed = True
# if cost of link has changed
if link.cost != link_dict['cost']:
link.cost = link_dict['cost']
changed = True
# perform writes only if needed
if changed:
with log_failure(action[section], link):
link.full_clean()
link.save()
def update(self):
"""
Updates topology
Links are not deleted straightaway but set as "down"
"""
from . import Link, Node # avoid circular dependency
diff = self.diff()
status = {
'added': 'up',
'removed': 'down',
'changed': 'up'
}
action = {
'added': 'add',
'changed': 'change',
'removed': 'remove'
}
try:
added_nodes = diff['added']['nodes']
except TypeError:
added_nodes = []
for node_dict in added_nodes:
node = Node.count_address(node_dict['id'])
if node: # pragma no cover
continue
addresses = '{0};'.format(node_dict['id'])
addresses += ';'.join(node_dict.get('local_addresses', []))
properties = node_dict.get('properties', {})
node = Node(addresses=addresses,
properties=properties)
node.full_clean()
node.save()
for section, graph in sorted(diff.items()):
# if graph is empty skip to next one
if not graph:
continue
for link_dict in graph['links']:
changed = False
link = Link.get_from_nodes(link_dict['source'],
link_dict['target'])
if not link:
source = Node.get_from_address(link_dict['source'])
target = Node.get_from_address(link_dict['target'])
link = Link(source=source,
target=target,
cost=link_dict['cost'],
properties=link_dict.get('properties', {}),
topology=self)
changed = True
# links in changed and removed sections
# are always changing therefore needs to be saved
if section in ['changed', 'removed']:
link.status = status[section]
link.cost = link_dict['cost']
changed = True
# perform writes only if needed
if changed:
with log_on_fail(action[section], link):
link.full_clean()
link.save()
def update(self, data=None):
"""
Updates topology
Links are not deleted straightaway but set as "down"
"""
Link, Node = self.link_model, self.node_model
diff = self.diff(data)
status = {
'added': 'up',
'removed': 'down',
'changed': 'up'
}
action = {
'added': 'add',
'changed': 'change',
'removed': 'remove'
}
try:
added_nodes = diff['added']['nodes']
except TypeError:
added_nodes = []
for node_dict in added_nodes:
node = Node.count_address(node_dict['id'], topology=self)
# if node exists skip to next iteration
if node: # pragma no cover
continue
# if node doesn't exist create new
addresses = '{0};'.format(node_dict['id'])
addresses += ';'.join(node_dict.get('local_addresses', []))
properties = node_dict.get('properties', {})
node = Node(addresses=addresses,
properties=properties,
topology=self)
node.truncate_addresses()
node.full_clean()
node.save()
for section, graph in sorted(diff.items()):
# if graph is empty skip to next one
if not graph:
continue
for link_dict in graph['links']:
changed = False
link = Link.get_from_nodes(link_dict['source'],
link_dict['target'],
topology=self)
# if link does not exist create new
if not link:
source = Node.get_from_address(link_dict['source'], self)
target = Node.get_from_address(link_dict['target'], self)
link = Link(source=source,
target=target,
cost=link_dict['cost'],
properties=link_dict.get('properties', {}),
topology=self)
changed = True
# if status of link is changed
if self.link_status_changed(link, status[section]):
link.status = status[section]
changed = True
# if cost of link has changed
if link.cost != link_dict['cost']:
link.cost = link_dict['cost']
changed = True
# perform writes only if needed
if changed:
with log_failure(action[section], link):
link.full_clean()
link.save()
