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[Bug 1634114] [NEW] fwaas v2 update firewall group hit l3 agent error.

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: zhaobo <zhaobo6@xxxxxxxxxx>
Date: Mon, 17 Oct 2016 12:14:11 -0000
Reply-to: Bug 1634114 <1634114@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Public bug reported:

update fwaas v2 firewall group with a associated port and a non-associated port.
And the server send the agent the firewall_group body like:

{
	u'firewall_group': {
		u'status': u'PENDING_UPDATE',
		u'description': u'',
		u'admin_state_up': True,
		u'ingress_rule_list': [{
			u'protocol': u'tcp',
			u'description': u'',
			u'tenant_id': u'488da3aab0ff45df9e85e17e7f89fedd',
			u'enabled': True,
			u'public': False,
			u'source_ip_address': u'6.6.6.6',
			u'destination_ip_address': None,
			u'action': u'reject',
			u'source_port': None,
			u'ip_version': 4,
			u'destination_port': u'80',
			u'project_id': u'488da3aab0ff45df9e85e17e7f89fedd',
			u'id': u'5cab3347-00bc-45a8-9af6-2cdcca008661',
			u'name': u'reject'
		}],
		u'tenant_id': u'488da3aab0ff45df9e85e17e7f89fedd',
		u'ingress_firewall_policy_id': u'8a17ebd9-3cc6-47ec-aafd-aa0d804740e7',
		u'public': False,
		u'del-port-ids': [],
		u'egress_rule_list': [],
		u'last-port': False,
		u'add-port-ids': [u'9e7caee0-0c8f-435f-98aa-726f6afc4e97',
		u'38c3efc1-fd8f-4e4a-a1da-1bf9ccef89cc'],
		u'project_id': u'488da3aab0ff45df9e85e17e7f89fedd',
		u'id': u'2932b3d9-3a7b-48a1-a16c-bf9f7b2751a5',
		u'egress_firewall_policy_id': None,
		u'name': u'ag1'
	},
	u'host': u'SZX1000138589'
}

Then the l3 agent will hit error and the resource status still hang in
PENDING_UPDATE.

Trace:
2016-10-17 19:38:52.763 DEBUG neutron.agent.linux.utils [^[[01;36mreq-70a427db-42b1-414d-9126-21df67ac5572 ^[[00;36madmin 488da3aab0ff45df9e85e17e7f89fedd] ^[[01;35mExit code: 0^[[00m ^[[00;33mfrom (pid=3657) execute /opt/stack/neutron/neutron/agent/linux/utils.py:141^[[00m
2016-10-17 19:38:52.764 ERROR oslo_messaging.rpc.server [^[[01;36mreq-70a427db-42b1-414d-9126-21df67ac5572 ^[[00;36madmin 488da3aab0ff45df9e85e17e7f89fedd] ^[[01;35mException during message handling^[[00m
2016-10-17 19:38:52.764 TRACE oslo_messaging.rpc.server ^[[01;35m^[[00mTraceback (most recent call last):
2016-10-17 19:38:52.764 TRACE oslo_messaging.rpc.server ^[[01;35m^[[00m  File "/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/server.py", line 133, in _process_incoming
2016-10-17 19:38:52.764 TRACE oslo_messaging.rpc.server ^[[01;35m^[[00m    res = self.dispatcher.dispatch(message)
2016-10-17 19:38:52.764 TRACE oslo_messaging.rpc.server ^[[01;35m^[[00m  File "/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 150, in dispatch
2016-10-17 19:38:52.764 TRACE oslo_messaging.rpc.server ^[[01;35m^[[00m    return self._do_dispatch(endpoint, method, ctxt, args)
2016-10-17 19:38:52.764 TRACE oslo_messaging.rpc.server ^[[01;35m^[[00m  File "/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 121, in _do_dispatch
2016-10-17 19:38:52.764 TRACE oslo_messaging.rpc.server ^[[01;35m^[[00m    result = func(ctxt, **new_args)
2016-10-17 19:38:52.764 TRACE oslo_messaging.rpc.server ^[[01;35m^[[00m  File "/usr/local/lib/python2.7/dist-packages/oslo_log/helpers.py", line 48, in wrapper
2016-10-17 19:38:52.764 TRACE oslo_messaging.rpc.server ^[[01;35m^[[00m    return method(*args, **kwargs)
2016-10-17 19:38:52.764 TRACE oslo_messaging.rpc.server ^[[01;35m^[[00m  File "/opt/stack/neutron-fwaas/neutron_fwaas/services/firewall/agents/l3reference/firewall_l3_agent_v2.py", line 421, in update_firewall_group
2016-10-17 19:38:52.764 TRACE oslo_messaging.rpc.server ^[[01;35m^[[00m    'ports': ', '.join(fw_ports)})
2016-10-17 19:38:52.764 TRACE oslo_messaging.rpc.server ^[[01;35m^[[00mUnboundLocalError: local variable 'fw_ports' referenced before assignment
2016-10-17 19:38:52.764 TRACE oslo_messaging.rpc.server ^[[01;35m^[[00m

** Affects: neutron
     Importance: Undecided
     Assignee: zhaobo (zhaobo6)
         Status: In Progress

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https://bugs.launchpad.net/bugs/1634114

Title:
  fwaas v2 update firewall group hit l3 agent error.

Status in neutron:
  In Progress

Bug description:
  update fwaas v2 firewall group with a associated port and a non-associated port.
  And the server send the agent the firewall_group body like:

  {
  	u'firewall_group': {
  		u'status': u'PENDING_UPDATE',
  		u'description': u'',
  		u'admin_state_up': True,
  		u'ingress_rule_list': [{
  			u'protocol': u'tcp',
  			u'description': u'',
  			u'tenant_id': u'488da3aab0ff45df9e85e17e7f89fedd',
  			u'enabled': True,
  			u'public': False,
  			u'source_ip_address': u'6.6.6.6',
  			u'destination_ip_address': None,
  			u'action': u'reject',
  			u'source_port': None,
  			u'ip_version': 4,
  			u'destination_port': u'80',
  			u'project_id': u'488da3aab0ff45df9e85e17e7f89fedd',
  			u'id': u'5cab3347-00bc-45a8-9af6-2cdcca008661',
  			u'name': u'reject'
  		}],
  		u'tenant_id': u'488da3aab0ff45df9e85e17e7f89fedd',
  		u'ingress_firewall_policy_id': u'8a17ebd9-3cc6-47ec-aafd-aa0d804740e7',
  		u'public': False,
  		u'del-port-ids': [],
  		u'egress_rule_list': [],
  		u'last-port': False,
  		u'add-port-ids': [u'9e7caee0-0c8f-435f-98aa-726f6afc4e97',
  		u'38c3efc1-fd8f-4e4a-a1da-1bf9ccef89cc'],
  		u'project_id': u'488da3aab0ff45df9e85e17e7f89fedd',
  		u'id': u'2932b3d9-3a7b-48a1-a16c-bf9f7b2751a5',
  		u'egress_firewall_policy_id': None,
  		u'name': u'ag1'
  	},
  	u'host': u'SZX1000138589'
  }

  Then the l3 agent will hit error and the resource status still hang in
  PENDING_UPDATE.

  Trace:
  2016-10-17 19:38:52.763 DEBUG neutron.agent.linux.utils [^[[01;36mreq-70a427db-42b1-414d-9126-21df67ac5572 ^[[00;36madmin 488da3aab0ff45df9e85e17e7f89fedd] ^[[01;35mExit code: 0^[[00m ^[[00;33mfrom (pid=3657) execute /opt/stack/neutron/neutron/agent/linux/utils.py:141^[[00m
  2016-10-17 19:38:52.764 ERROR oslo_messaging.rpc.server [^[[01;36mreq-70a427db-42b1-414d-9126-21df67ac5572 ^[[00;36madmin 488da3aab0ff45df9e85e17e7f89fedd] ^[[01;35mException during message handling^[[00m
  2016-10-17 19:38:52.764 TRACE oslo_messaging.rpc.server ^[[01;35m^[[00mTraceback (most recent call last):
  2016-10-17 19:38:52.764 TRACE oslo_messaging.rpc.server ^[[01;35m^[[00m  File "/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/server.py", line 133, in _process_incoming
  2016-10-17 19:38:52.764 TRACE oslo_messaging.rpc.server ^[[01;35m^[[00m    res = self.dispatcher.dispatch(message)
  2016-10-17 19:38:52.764 TRACE oslo_messaging.rpc.server ^[[01;35m^[[00m  File "/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 150, in dispatch
  2016-10-17 19:38:52.764 TRACE oslo_messaging.rpc.server ^[[01;35m^[[00m    return self._do_dispatch(endpoint, method, ctxt, args)
  2016-10-17 19:38:52.764 TRACE oslo_messaging.rpc.server ^[[01;35m^[[00m  File "/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 121, in _do_dispatch
  2016-10-17 19:38:52.764 TRACE oslo_messaging.rpc.server ^[[01;35m^[[00m    result = func(ctxt, **new_args)
  2016-10-17 19:38:52.764 TRACE oslo_messaging.rpc.server ^[[01;35m^[[00m  File "/usr/local/lib/python2.7/dist-packages/oslo_log/helpers.py", line 48, in wrapper
  2016-10-17 19:38:52.764 TRACE oslo_messaging.rpc.server ^[[01;35m^[[00m    return method(*args, **kwargs)
  2016-10-17 19:38:52.764 TRACE oslo_messaging.rpc.server ^[[01;35m^[[00m  File "/opt/stack/neutron-fwaas/neutron_fwaas/services/firewall/agents/l3reference/firewall_l3_agent_v2.py", line 421, in update_firewall_group
  2016-10-17 19:38:52.764 TRACE oslo_messaging.rpc.server ^[[01;35m^[[00m    'ports': ', '.join(fw_ports)})
  2016-10-17 19:38:52.764 TRACE oslo_messaging.rpc.server ^[[01;35m^[[00mUnboundLocalError: local variable 'fw_ports' referenced before assignment
  2016-10-17 19:38:52.764 TRACE oslo_messaging.rpc.server ^[[01;35m^[[00m

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Follow ups

[Bug 1634114] Re: fwaas v2 update firewall group hit l3 agent error.
From: OpenStack Infra, 2016-10-19