def delete(self):
"""Remove a load balancer from the account.
:param load_balancer_id: id of lb
Urls:
DELETE /loadbalancers/{load_balancer_id}
Notes:
curl -i -H "Accept: application/json" -X DELETE
http://dev.server:8080/loadbalancers/1
Returns: None
"""
load_balancer_id = self.lbid
tenant_id = get_limited_to_project(request.headers)
# grab the lb
with db_session() as session:
lb = session.query(LoadBalancer).\
filter(LoadBalancer.id == load_balancer_id).\
filter(LoadBalancer.tenantid == tenant_id).\
filter(LoadBalancer.status != 'DELETED').first()
if lb is None:
session.rollback()
raise NotFound("Load Balancer ID is not valid")
# So we can delete ERROR, but not other Immutable states
if lb.status in ImmutableStatesNoError:
session.rollback()
raise ImmutableEntity(
'Cannot delete a Load Balancer in a non-ACTIVE state'
', current state: {0}'.format(lb.status))
lb.status = 'PENDING_DELETE'
device = session.query(
Device.id, Device.name
).join(LoadBalancer.devices).\
filter(LoadBalancer.id == load_balancer_id).\
first()
counter = session.query(Counters).\
filter(Counters.name == 'api_loadbalancers_delete').first()
counter.value += 1
if device is None:
# This can happen if a device was manually deleted from the DB
lb.status = 'DELETED'
session.execute(loadbalancers_devices.delete().where(
loadbalancers_devices.c.loadbalancer == lb.id))
session.query(Node).\
filter(Node.lbid == lb.id).delete()
session.query(HealthMonitor).\
filter(HealthMonitor.lbid == lb.id).delete()
session.commit()
else:
session.commit()
submit_job('DELETE', device.name, device.id, lb.id)
return None
def delete(self):
"""Remove a load balancer from the account.
:param load_balancer_id: id of lb
Urls:
DELETE /loadbalancers/{load_balancer_id}
Notes:
curl -i -H "Accept: application/json" -X DELETE
http://dev.server:8080/loadbalancers/1
Returns: None
"""
load_balancer_id = self.lbid
tenant_id = get_limited_to_project(request.headers)
# grab the lb
with db_session() as session:
lb = (
session.query(LoadBalancer)
.filter(LoadBalancer.id == load_balancer_id)
.filter(LoadBalancer.tenantid == tenant_id)
.filter(LoadBalancer.status != "DELETED")
.first()
)
if lb is None:
session.rollback()
raise NotFound("Load Balancer ID is not valid")
# So we can delete ERROR, but not other Immutable states
if lb.status in ImmutableStatesNoError:
session.rollback()
raise ImmutableEntity(
"Cannot delete a Load Balancer in a non-ACTIVE state" ", current state: {0}".format(lb.status)
)
lb.status = "PENDING_DELETE"
device = (
session.query(Device.id, Device.name)
.join(LoadBalancer.devices)
.filter(LoadBalancer.id == load_balancer_id)
.first()
)
if device is None:
# This can happen if a device was manually deleted from the DB
lb.status = "DELETED"
session.execute(loadbalancers_devices.delete().where(loadbalancers_devices.c.loadbalancer == lb.id))
session.query(Node).filter(Node.lbid == lb.id).delete()
session.query(HealthMonitor).filter(HealthMonitor.lbid == lb.id).delete()
session.commit()
else:
session.commit()
submit_job("DELETE", device.name, device.id, lb.id)
return None
def send_delete(self, data):
with db_session() as session:
count = session.query(
LoadBalancer
).join(LoadBalancer.devices).\
filter(Device.id == data).\
filter(LoadBalancer.id != self.lbid).\
filter(LoadBalancer.status != 'DELETED').\
filter(LoadBalancer.status != 'PENDING_DELETE').\
count()
if count >= 1:
# This is an update message because we want to retain the
# remaining LB
keep_lb = session.query(LoadBalancer).\
join(LoadBalancer.nodes).\
join(LoadBalancer.devices).\
filter(Device.id == data).\
filter(LoadBalancer.id != self.lbid).\
filter(LoadBalancer.status != 'DELETED').\
filter(LoadBalancer.status != 'PENDING_DELETE').\
first()
job_data = {
'hpcs_action': 'UPDATE',
'loadBalancers': [{
'name': keep_lb.name,
'protocol': keep_lb.protocol,
'algorithm': keep_lb.algorithm,
'port': keep_lb.port,
'nodes': []
}]
}
for node in keep_lb.nodes:
if not node.enabled:
continue
condition = 'ENABLED'
node_data = {
'id': node.id, 'port': node.port,
'address': node.address, 'weight': node.weight,
'condition': condition
}
job_data['loadBalancers'][0]['nodes'].append(node_data)
else:
# This is a delete
dev = session.query(Device.name).\
filter(Device.id == data).first()
vip = session.query(Vip).\
filter(Vip.device == data).first()
if vip:
submit_vip_job(
'REMOVE', dev.name, str(ipaddress.IPv4Address(vip.ip))
)
job_data = {"hpcs_action": "DELETE"}
status, response = self._send_message(job_data, 'hpcs_response')
lb = session.query(LoadBalancer).\
filter(LoadBalancer.id == self.lbid).\
first()
if not status:
LOG.error(
"Failed Gearman delete for LB {0}".format(lb.id)
)
self._set_error(data, response, session)
lb.status = 'DELETED'
tenant_id = lb.tenantid
if count == 0:
# Device should never be used again
device = session.query(Device).\
filter(Device.id == data).first()
device.status = 'DELETED'
# Remove LB-device join
session.execute(loadbalancers_devices.delete().where(
loadbalancers_devices.c.loadbalancer == lb.id
))
session.query(Node).\
filter(Node.lbid == lb.id).delete()
session.query(HealthMonitor).\
filter(HealthMonitor.lbid == lb.id).delete()
counter = session.query(Counters).\
filter(Counters.name == 'loadbalancers_deleted').first()
counter.value += 1
session.commit()
# Notify billing of the LB deletion
update_mnb('lbaas.instance.delete', self.lbid, tenant_id)
def send_delete(self, data):
with db_session() as session:
count = session.query(
LoadBalancer
).join(LoadBalancer.devices).\
filter(Device.id == data).\
filter(LoadBalancer.id != self.lbid).\
filter(LoadBalancer.status != 'DELETED').\
filter(LoadBalancer.status != 'PENDING_DELETE').\
count()
if count >= 1:
# This is an update message because we want to retain the
# remaining LB
keep_lb = session.query(LoadBalancer).\
join(LoadBalancer.nodes).\
join(LoadBalancer.devices).\
filter(Device.id == data).\
filter(LoadBalancer.id != self.lbid).\
filter(LoadBalancer.status != 'DELETED').\
filter(LoadBalancer.status != 'PENDING_DELETE').\
first()
job_data = {
'hpcs_action':
'UPDATE',
'loadBalancers': [{
'name': keep_lb.name,
'protocol': keep_lb.protocol,
'algorithm': keep_lb.algorithm,
'port': keep_lb.port,
'nodes': []
}]
}
for node in keep_lb.nodes:
if not node.enabled:
continue
condition = 'ENABLED'
node_data = {
'id': node.id,
'port': node.port,
'address': node.address,
'weight': node.weight,
'condition': condition
}
job_data['loadBalancers'][0]['nodes'].append(node_data)
else:
# This is a delete
dev = session.query(Device.name).\
filter(Device.id == data).first()
vip = session.query(Vip).\
filter(Vip.device == data).first()
if vip:
submit_vip_job('REMOVE', dev.name,
str(ipaddress.IPv4Address(vip.ip)))
job_data = {"hpcs_action": "DELETE"}
status, response = self._send_message(job_data, 'hpcs_response')
lb = session.query(LoadBalancer).\
filter(LoadBalancer.id == self.lbid).\
first()
if not status:
LOG.error("Failed Gearman delete for LB {0}".format(lb.id))
self._set_error(data, response, session)
lb.status = 'DELETED'
tenant_id = lb.tenantid
if count == 0:
# Device should never be used again
device = session.query(Device).\
filter(Device.id == data).first()
device.status = 'DELETED'
# Remove LB-device join
session.execute(loadbalancers_devices.delete().where(
loadbalancers_devices.c.loadbalancer == lb.id))
session.query(Node).\
filter(Node.lbid == lb.id).delete()
session.query(HealthMonitor).\
filter(HealthMonitor.lbid == lb.id).delete()
counter = session.query(Counters).\
filter(Counters.name == 'loadbalancers_deleted').first()
counter.value += 1
session.commit()
# Notify billing of the LB deletion
update_mnb('lbaas.instance.delete', self.lbid, tenant_id)