def validate_agent_router_combination(self, context, agent, router):
"""Validate if the router can be correctly assigned to the agent.
:raises: RouterL3AgentMismatch if attempting to assign DVR router
to legacy agent.
:raises: InvalidL3Agent if attempting to assign router to an
unsuitable agent (disabled, type != L3, incompatible configuration)
:raises: DVRL3CannotAssignToDvrAgent if attempting to assign a
router to an agent in 'dvr' mode.
"""
if agent['agent_type'] != constants.AGENT_TYPE_L3:
raise l3agentscheduler.InvalidL3Agent(id=agent['id'])
agent_mode = self._get_agent_mode(agent)
if agent_mode in [
constants.L3_AGENT_MODE_DVR,
l_consts.L3_AGENT_MODE_DVR_NO_EXTERNAL
]:
raise l3agentscheduler.DVRL3CannotAssignToDvrAgent()
if (agent_mode == constants.L3_AGENT_MODE_LEGACY
and router.get('distributed')):
raise l3agentscheduler.RouterL3AgentMismatch(
router_id=router['id'], agent_id=agent['id'])
is_suitable_agent = (agentschedulers_db.services_available(
agent['admin_state_up']) and self.get_l3_agent_candidates(
context, router, [agent], ignore_admin_state=True))
if not is_suitable_agent:
raise l3agentscheduler.InvalidL3Agent(id=agent['id'])
def validate_agent_router_combination(self, context, agent, router):
"""Validate if the router can be correctly assigned to the agent.
:raises: RouterL3AgentMismatch if attempting to assign DVR router
to legacy agent, or centralized router to compute's L3 agents.
:raises: InvalidL3Agent if attempting to assign router to an
unsuitable agent (disabled, type != L3, incompatible configuration)
:raises: DVRL3CannotAssignToDvrAgent if attempting to assign DVR
router from one DVR Agent to another.
"""
is_distributed = router.get('distributed')
agent_conf = self.get_configuration_dict(agent)
agent_mode = agent_conf.get('agent_mode', 'legacy')
router_type = ('distributed' if is_distributed else 'centralized')
is_agent_router_types_incompatible = (
agent_mode == 'dvr' and not is_distributed
or agent_mode == 'legacy' and is_distributed)
if is_agent_router_types_incompatible:
raise l3agentscheduler.RouterL3AgentMismatch(
router_type=router_type,
router_id=router['id'],
agent_mode=agent_mode,
agent_id=agent['id'])
if agent_mode == 'dvr' and is_distributed:
raise l3agentscheduler.DVRL3CannotAssignToDvrAgent(
router_type=router_type,
router_id=router['id'],
agent_id=agent['id'])
is_wrong_type_or_unsuitable_agent = (
agent['agent_type'] != constants.AGENT_TYPE_L3
or not agent['admin_state_up']
or not self.get_l3_agent_candidates(context, router, [agent]))
if is_wrong_type_or_unsuitable_agent:
raise l3agentscheduler.InvalidL3Agent(id=agent['id'])
def add_router_to_l3_agent(self, context, id, router_id):
"""Add a l3 agent to host a router."""
router = self.get_router(context, router_id)
with context.session.begin(subtransactions=True):
agent_db = self._get_agent(context, id)
if (agent_db['agent_type'] != constants.AGENT_TYPE_L3 or
not agent_db['admin_state_up'] or
not self.get_l3_agent_candidates(router, [agent_db])):
raise l3agentscheduler.InvalidL3Agent(id=id)
query = context.session.query(RouterL3AgentBinding)
try:
binding = query.filter(
RouterL3AgentBinding.l3_agent_id == agent_db.id,
RouterL3AgentBinding.router_id == router_id).one()
if binding:
raise l3agentscheduler.RouterHostedByL3Agent(
router_id=router_id, agent_id=id)
except exc.NoResultFound:
pass
result = self.auto_schedule_routers(context,
agent_db.host,
[router_id])
if not result:
raise l3agentscheduler.RouterSchedulingFailed(
router_id=router_id, agent_id=id)
l3_notifier = self.agent_notifiers.get(constants.AGENT_TYPE_L3)
if l3_notifier:
l3_notifier.router_added_to_agent(
context, [router_id], agent_db.host)
def add_firewall_to_l3_agent(self, context, agent_id, firewall_id):
"""Add a l3 agent to host a firewall."""
firewall = self.get_firewall(context, firewall_id)
with context.session.begin(subtransactions=True):
agent_db = self._get_agent(context, agent_id)
if (agent_db['agent_type'] != constants.AGENT_TYPE_L3 or
not agent_db['admin_state_up']):
raise l3agentscheduler.InvalidL3Agent(id=agent_id)
query = context.session.query(FirewallL3AgentBinding)
try:
binding = query.filter_by(firewall_id=firewall_id).one()
raise l3agentscheduler.FirewallHostedByL3Agent(
firewall_id=firewall_id,
agent_id=binding.l3_agent_id)
except exc.NoResultFound:
pass
result = self.auto_schedule_firewalls(context,
agent_db.host,
[firewall_id])
if not result:
raise l3agentscheduler.FirewallSchedulingFailed(
firewall_id=firewall_id, agent_id=agent_id)
l3_notifier = self.agent_notifiers.get(constants.AGENT_TYPE_L3)
if l3_notifier:
l3_notifier.firewall_added_to_agent(
context, [firewall_id], agent_db.host)
def validate_agent_router_combination(self, context, agent, router):
"""Validate if the router can be correctly assigned to the agent.
:raises: RouterL3AgentMismatch if attempting to assign DVR router
to legacy agent, or centralized router to compute's L3 agents.
:raises: InvalidL3Agent if attempting to assign router to an
unsuitable agent (disabled, type != L3, incompatible configuration)
:raises: DVRL3CannotAssignToDvrAgent if attempting to assign DVR
router from one DVR Agent to another.
"""
if agent['agent_type'] != constants.AGENT_TYPE_L3:
raise l3agentscheduler.InvalidL3Agent(id=agent['id'])
is_distributed = router.get('distributed')
agent_conf = self.get_configuration_dict(agent)
agent_mode = agent_conf.get(constants.L3_AGENT_MODE,
constants.L3_AGENT_MODE_LEGACY)
router_type = ('distributed' if is_distributed else 'centralized')
is_agent_router_types_incompatible = (
agent_mode == constants.L3_AGENT_MODE_DVR and not is_distributed
or agent_mode == constants.L3_AGENT_MODE_LEGACY and is_distributed)
if is_agent_router_types_incompatible:
raise l3agentscheduler.RouterL3AgentMismatch(
router_type=router_type,
router_id=router['id'],
agent_mode=agent_mode,
agent_id=agent['id'])
if agent_mode == constants.L3_AGENT_MODE_DVR and is_distributed:
raise l3agentscheduler.DVRL3CannotAssignToDvrAgent(
router_type=router_type,
router_id=router['id'],
agent_id=agent['id'])
is_suitable_agent = (
agentschedulers_db.services_available(agent['admin_state_up'])
and (self.get_l3_agent_candidates(
context, router, [agent], ignore_admin_state=True)
or self.get_snat_candidates(router, [agent])))
if not is_suitable_agent:
raise l3agentscheduler.InvalidL3Agent(id=agent['id'])
def validate_agent_router_combination(self, context, agent, router):
"""Validate if the router can be correctly assigned to the agent.
:raises: RouterL3AgentMismatch if attempting to assign DVR router
to legacy agent, or centralized router to compute's L3 agents.
:raises: InvalidL3Agent if attempting to assign router to an
unsuitable agent (disabled, type != L3, incompatible configuration)
:raises: DVRL3CannotAssignToDvrAgent if attempting to assign DVR
router from one DVR Agent to another dvr agent.
:raises: DVRL3CannotAssignRouterWithNoGateway if attempting to
assign DVR router to dvr_snat agent when there is no gateway
associated with the DVR router.
"""
is_distributed = router.get('distributed')
agent_conf = self.get_configuration_dict(agent)
agent_mode = agent_conf.get('agent_mode', 'legacy')
router_type = ('distributed' if is_distributed else 'centralized')
is_agent_router_types_incompatible = (
agent_mode == 'dvr' and not is_distributed
or agent_mode == 'legacy' and is_distributed
)
if is_agent_router_types_incompatible:
raise l3agentscheduler.RouterL3AgentMismatch(
router_type=router_type, router_id=router['id'],
agent_mode=agent_mode, agent_id=agent['id'])
assign_to_dvr_agent = agent_mode == 'dvr'
if assign_to_dvr_agent and is_distributed:
raise l3agentscheduler.DVRL3CannotAssignToDvrAgent(
router_type=router_type, router_id=router['id'],
agent_mode=agent_mode, agent_id=agent['id'])
assign_to_dvr_agent = agent_mode == 'dvr_snat'
assign_router_with_no_gateway = not (
router.get('external_gateway_info', None))
if (assign_to_dvr_agent and is_distributed and
assign_router_with_no_gateway):
raise l3agentscheduler.DVRL3CannotAssignRouterWithNoGateway(
router_type=router_type, router_id=router['id'],
agent_mode=agent_mode, agent_id=agent['id'])
is_suitable_agent = (
self.get_l3_agent_candidates(context, router, [agent]) or
self.get_snat_candidates(router, [agent])
)
is_wrong_type = (
agent['agent_type'] != constants.AGENT_TYPE_L3
)
if is_wrong_type or not is_suitable_agent:
raise l3agentscheduler.InvalidL3Agent(id=agent['id'])
def add_router_to_l3_agent(self, context, agent_id, router_id):
"""Add a l3 agent to host a router."""
router = self.get_router(context, router_id)
distributed = router.get('distributed')
with context.session.begin(subtransactions=True):
agent_db = self._get_agent(context, agent_id)
agent_conf = self.get_configuration_dict(agent_db)
agent_mode = agent_conf.get('agent_mode', 'legacy')
if (not distributed and agent_mode == 'dvr'
or distributed and agent_mode == 'legacy'):
router_type = ('distributed' if distributed else 'centralized')
raise l3agentscheduler.RouterL3AgentMismatch(
router_type=router_type,
router_id=router_id,
agent_mode=agent_mode,
agent_id=agent_id)
if (agent_db['agent_type'] != constants.AGENT_TYPE_L3
or not agent_db['admin_state_up']
or not self.get_l3_agent_candidates(
context, router, [agent_db])):
raise l3agentscheduler.InvalidL3Agent(id=agent_id)
query = context.session.query(RouterL3AgentBinding)
if distributed:
binding = query.filter_by(router_id=router_id,
l3_agent_id=agent_id).first()
if binding:
raise l3agentscheduler.RouterHostedByL3Agent(
router_id=router_id, agent_id=binding.l3_agent_id)
else:
try:
binding = query.filter_by(router_id=router_id).one()
raise l3agentscheduler.RouterHostedByL3Agent(
router_id=router_id, agent_id=binding.l3_agent_id)
except exc.NoResultFound:
pass
result = self.auto_schedule_routers(context, agent_db.host,
[router_id])
if not result:
raise l3agentscheduler.RouterSchedulingFailed(
router_id=router_id, agent_id=agent_id)
l3_notifier = self.agent_notifiers.get(constants.AGENT_TYPE_L3)
if l3_notifier:
l3_notifier.router_added_to_agent(context, [router_id],
agent_db.host)