[Bug 1674156] Re: neutron-lbaasv2-agent: TypeError: argument of type 'LoadBalancer' is not iterable

[Chuck Short]

** Package changed: neutron-lbaas (Ubuntu) => neutron

** Also affects: neutron-lbaas (Ubuntu)
   Importance: Undecided
       Status: New

** Changed in: neutron-lbaas (Ubuntu)
       Status: New => Triaged

** Changed in: neutron-lbaas (Ubuntu)
   Importance: Undecided => Low

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Title:
  neutron-lbaasv2-agent: TypeError: argument of type 'LoadBalancer' is
  not iterable

Status in neutron:
  New
Status in neutron-lbaas package in Ubuntu:
  Triaged

Bug description:
  Is somebody actually running neutron LBaaSv2 with haproxy on Ubuntu
  16.04?

  root at controller1:~# dpkg -l neutron-lbaasv2-agent
  ii  neutron-lbaasv2-agent                           2:8.3.0-0ubuntu1             all                          Neutron is a virtual network service for Openstack - LBaaSv2 agent
  root at controller1:~# lsb_release -a
  No LSB modules are available.
  Distributor ID: Ubuntu
  Description:    Ubuntu 16.04.2 LTS
  Release:        16.04
  Codename:       xenial
  root at controller1:~# 

  
  From /var/log/neutron/neutron-lbaasv2-agent.log:

  2017-03-19 20:39:06.694 4528 INFO neutron.common.config [-] Logging enabled!
  2017-03-19 20:39:06.694 4528 INFO neutron.common.config [-] /usr/bin/neutron-lbaasv2-agent version 8.3.0
  2017-03-19 20:39:06.702 4528 WARNING oslo_config.cfg [req-9a6a669c-5a5a-4b6c-8c2f-2b1edd9462d9 - - - - -] Option "default_ipv6_subnet_pool" from group "DEFAULT" is deprecated for removal.  Its value may be silently ignored in the future.
  2017-03-19 20:39:07.033 4528 ERROR neutron_lbaas.services.loadbalancer.drivers.haproxy.namespace_driver [-] <neutron_lbaas.services.loadbalancer.data_models.LoadBalancer object at 0x7f881b430e90>
  2017-03-19 20:39:07.034 4528 ERROR neutron_lbaas.agent.agent_manager [-] Unable to deploy instance for loadbalancer: c49473a7-b956-4a5d-8215-703335eb3320
  2017-03-19 20:39:07.034 4528 ERROR neutron_lbaas.agent.agent_manager Traceback (most recent call last):
  2017-03-19 20:39:07.034 4528 ERROR neutron_lbaas.agent.agent_manager   File "/usr/lib/python2.7/dist-packages/neutron_lbaas/agent/agent_manager.py", line 185, in _reload_loadbalancer
  2017-03-19 20:39:07.034 4528 ERROR neutron_lbaas.agent.agent_manager     self.device_drivers[driver_name].deploy_instance(loadbalancer)
  2017-03-19 20:39:07.034 4528 ERROR neutron_lbaas.agent.agent_manager   File "/usr/lib/python2.7/dist-packages/oslo_concurrency/lockutils.py", line 274, in inner
  2017-03-19 20:39:07.034 4528 ERROR neutron_lbaas.agent.agent_manager     return f(*args, **kwargs)
  2017-03-19 20:39:07.034 4528 ERROR neutron_lbaas.agent.agent_manager   File "/usr/lib/python2.7/dist-packages/neutron_lbaas/services/loadbalancer/drivers/haproxy/namespace_driver.py", line 332, in deploy_instance
  2017-03-19 20:39:07.034 4528 ERROR neutron_lbaas.agent.agent_manager     if not logical_config or not self._is_active(logical_config):
  2017-03-19 20:39:07.034 4528 ERROR neutron_lbaas.agent.agent_manager   File "/usr/lib/python2.7/dist-packages/neutron_lbaas/services/loadbalancer/drivers/haproxy/namespace_driver.py", line 310, in _is_active
  2017-03-19 20:39:07.034 4528 ERROR neutron_lbaas.agent.agent_manager     if ('vip' not in logical_config or
  2017-03-19 20:39:07.034 4528 ERROR neutron_lbaas.agent.agent_manager TypeError: argument of type 'LoadBalancer' is not iterable
  2017-03-19 20:39:07.034 4528 ERROR neutron_lbaas.agent.agent_manager 

  /etc/neutron/neutron_lbaas.conf:
  [service_providers]
  service_provider=LOADBALANCER:Haproxy:neutron_lbaas.services.loadbalancer.drivers.haproxy.plugin_driver.HaproxyOnHostPluginDriver:default
  service_provider = LOADBALANCERV2:Haproxy:neutron_lbaas.drivers.haproxy.plugin_driver.HaproxyOnHostPluginDriver:default

  Looking at the code, I don't see how this can actually works.

  /usr/lib/python2.7/dist-
  packages/neutron_lbaas/services/loadbalancer/drivers/haproxy/namespace_driver.py
  +310

      def _is_active(self, logical_config):
          LOG.error(logical_config)
          # haproxy wil be unable to start without any active vip
  ==>     if ('vip' not in logical_config or
                  (logical_config['vip']['status'] not in
                   constants.ACTIVE_PENDING_STATUSES) or
                  not logical_config['vip']['admin_state_up']):
              return False

  
  /usr/lib/python2.7/dist-packages/neutron_lbaas/services/loadbalancer/data_models.py:

  class LoadBalancer(BaseDataModel):

      fields = ['id', 'tenant_id', 'name', 'description', 'vip_subnet_id',
                'vip_port_id', 'vip_address', 'provisioning_status',
                'operating_status', 'admin_state_up', 'vip_port', 'stats',
                'provider', 'listeners', 'pools', 'flavor_id']

      def __init__(self, id=None, tenant_id=None, name=None, description=None,
                   vip_subnet_id=None, vip_port_id=None, vip_address=None,
                   provisioning_status=None, operating_status=None,
                   admin_state_up=None, vip_port=None, stats=None,
                   provider=None, listeners=None, pools=None, flavor_id=None):
          self.id = id
          self.tenant_id = tenant_id
          self.name = name
          self.description = description
          self.vip_subnet_id = vip_subnet_id
          self.vip_port_id = vip_port_id
          self.vip_address = vip_address
          self.operating_status = operating_status
          self.provisioning_status = provisioning_status
          self.admin_state_up = admin_state_up
          self.vip_port = vip_port
          self.stats = stats
          self.provider = provider
          self.listeners = listeners or []
          self.flavor_id = flavor_id
          self.pools = pools or []

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