LBaaS: unify haproxy-on-host plugin driver and agent

Unifies haproxy reference implementation to make common agent based plugin driver
which is suitable for all vendors who wants to use async mechanism.

 - Agent API as well as device driver API changed to handle
   loadbalancer objects individually;
 - Agent loads device drivers according to config;
 - LogicalDeviceCache class was removed from agent as it was used only
   as a list - to put and remove entries ant check whether entry is in or not.
   It was replaced with instance_mapping dict in agent to store known instances and
   corresponding device_drivers;
 - Agent reports which device drivers are supported (needs for scheduling on plugin side);
 - Agent-to-plugin API was extended to provide an ability for agent to update
   statuses of pools/vips/members/health_monitors;
 - Vendor should only implement device driver; plugin driver just needs
   to inherit AgentBasedPluginDriver and override device_driver member;
 - This patch doesn't move files to make review easier;
   all rename/replace will be done in a subsequent patch;

DocImpact

NOTE: Since the change in the agent RPC API is backward-incompatible
(major RPC version change), LBaaS server-agent communications will be
completely broken until both sides are upgraded so users will be unable to
create new or update existing HAProxy loadbalancer instances during upgrade

Implements blueprint lbaas-common-agent-driver

Change-Id: I9fd90a1321611d202ef838681273081fa6c1686a

etc/lbaas_agent.ini

@@ -23,9 +23,16 @@
 # Example of interface_driver option for LinuxBridge
 # interface_driver = neutron.agent.linux.interface.BridgeInterfaceDriver
 
-# The agent requires a driver to manage the loadbalancer.  HAProxy is the
-# opensource version.
+# The agent requires drivers to manage the loadbalancer.  HAProxy is the opensource version.
+# Multiple device drivers reflecting different service providers could be specified:
+# device_driver = path.to.provider1.driver.Driver
+# device_driver = path.to.provider2.driver.Driver
+# Default is:
 # device_driver = neutron.services.loadbalancer.drivers.haproxy.namespace_driver.HaproxyNSDriver
 
+[haproxy]
+# Location to store config and state files
+# loadbalancer_state_path = $state_path/lbaas
+
 # The user group
 # user_group = nogroup

neutron/services/loadbalancer/agent_scheduler.py

@@ -79,11 +79,19 @@ class LbaasAgentSchedulerDbMixin(agentschedulers_db.AgentSchedulerDbMixin,
         else:
             return {'pools': []}
 
+    def get_lbaas_agent_candidates(self, device_driver, active_agents):
+        candidates = []
+        for agent in active_agents:
+            agent_conf = self.get_configuration_dict(agent)
+            if device_driver in agent_conf['device_drivers']:
+                candidates.append(agent)
+        return candidates
+
 
 class ChanceScheduler(object):
     """Allocate a loadbalancer agent for a vip in a random way."""
 
-    def schedule(self, plugin, context, pool):
+    def schedule(self, plugin, context, pool, device_driver):
         """Schedule the pool to an active loadbalancer agent if there
         is no enabled agent hosting it.
         """
@@ -97,11 +105,18 @@ class ChanceScheduler(object):
                            'agent_id': lbaas_agent['id']})
                 return
 
-            candidates = plugin.get_lbaas_agents(context, active=True)
-            if not candidates:
+            active_agents = plugin.get_lbaas_agents(context, active=True)
+            if not active_agents:
                 LOG.warn(_('No active lbaas agents for pool %s'), pool['id'])
                 return
 
+            candidates = plugin.get_lbaas_agent_candidates(device_driver,
+                                                           active_agents)
+            if not candidates:
+                LOG.warn(_('No lbaas agent supporting device driver %s'),
+                         device_driver)
+                return
+
             chosen_agent = random.choice(candidates)
             binding = PoolLoadbalancerAgentBinding()
             binding.agent = chosen_agent

neutron/services/loadbalancer/drivers/abstract_driver.py

@@ -107,7 +107,7 @@ class LoadBalancerAbstractDriver(object):
         pass
 
     @abc.abstractmethod
-    def update_health_monitor(self, context,
+    def update_pool_health_monitor(self, context,
                                    old_health_monitor,
                                    health_monitor,
                                    pool_id):

neutron/services/loadbalancer/drivers/agent_device_driver.py

@@ -0,0 +1,98 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+#
+# Copyright 2013 OpenStack Foundation.  All rights reserved
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+import abc
+
+import six
+
+
+@six.add_metaclass(abc.ABCMeta)
+class AgentDeviceDriver(object):
+    """Abstract device driver that defines the API required by LBaaS agent."""
+
+    @abc.abstractmethod
+    def get_name(cls):
+        """Returns unique name across all LBaaS device drivers."""
+        pass
+
+    @abc.abstractmethod
+    def deploy_instance(self, logical_config):
+        """Fully deploys a loadbalancer instance from a given config."""
+        pass
+
+    @abc.abstractmethod
+    def undeploy_instance(self, pool_id):
+        """Fully undeploys the loadbalancer instance."""
+        pass
+
+    @abc.abstractmethod
+    def get_stats(self, pool_id):
+        pass
+
+    def remove_orphans(self, known_pool_ids):
+        # Not all drivers will support this
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def create_vip(self, vip):
+        pass
+
+    @abc.abstractmethod
+    def update_vip(self, old_vip, vip):
+        pass
+
+    @abc.abstractmethod
+    def delete_vip(self, vip):
+        pass
+
+    @abc.abstractmethod
+    def create_pool(self, pool):
+        pass
+
+    @abc.abstractmethod
+    def update_pool(self, old_pool, pool):
+        pass
+
+    @abc.abstractmethod
+    def delete_pool(self, pool):
+        pass
+
+    @abc.abstractmethod
+    def create_member(self, member):
+        pass
+
+    @abc.abstractmethod
+    def update_member(self, old_member, member):
+        pass
+
+    @abc.abstractmethod
+    def delete_member(self, context, member):
+        pass
+
+    @abc.abstractmethod
+    def create_pool_health_monitor(self, health_monitor, pool_id):
+        pass
+
+    @abc.abstractmethod
+    def update_pool_health_monitor(self,
+                                   old_health_monitor,
+                                   health_monitor,
+                                   pool_id):
+        pass
+
+    @abc.abstractmethod
+    def delete_pool_health_monitor(self, context, health_monitor, pool_id):
+        pass

neutron/services/loadbalancer/drivers/haproxy/agent_api.py

@@ -22,7 +22,12 @@ from neutron.openstack.common.rpc import proxy
 class LbaasAgentApi(proxy.RpcProxy):
     """Agent side of the Agent to Plugin RPC API."""
 
-    API_VERSION = '1.0'
+    API_VERSION = '2.0'
+    # history
+    #   1.0 Initial version
+    #   2.0 Generic API for agent based drivers
+    #       - get_logical_device() handling changed on plugin side;
+    #       - pool_deployed() and update_status() methods added;
 
     def __init__(self, topic, context, host):
         super(LbaasAgentApi, self).__init__(topic, self.API_VERSION)
@@ -36,21 +41,35 @@ class LbaasAgentApi(proxy.RpcProxy):
             topic=self.topic
         )
 
+    def pool_destroyed(self, pool_id):
+        return self.call(
+            self.context,
+            self.make_msg('pool_destroyed', pool_id=pool_id),
+            topic=self.topic
+        )
+
+    def pool_deployed(self, pool_id):
+        return self.call(
+            self.context,
+            self.make_msg('pool_deployed', pool_id=pool_id),
+            topic=self.topic
+        )
+
     def get_logical_device(self, pool_id):
         return self.call(
             self.context,
             self.make_msg(
                 'get_logical_device',
-                pool_id=pool_id,
-                host=self.host
+                pool_id=pool_id
             ),
             topic=self.topic
         )
 
-    def pool_destroyed(self, pool_id):
+    def update_status(self, obj_type, obj_id, status):
         return self.call(
             self.context,
-            self.make_msg('pool_destroyed', pool_id=pool_id, host=self.host),
+            self.make_msg('update_status', obj_type=obj_type, obj_id=obj_id,
+                          status=status),
             topic=self.topic
         )
 

neutron/services/loadbalancer/drivers/haproxy/agent_manager.py

@@ -16,152 +16,100 @@
 #
 # @author: Mark McClain, DreamHost
 
-import weakref
-
 from oslo.config import cfg
 
-from neutron.agent.common import config
 from neutron.agent import rpc as agent_rpc
-from neutron.common import constants
+from neutron.common import constants as n_const
+from neutron.common import exceptions as n_exc
 from neutron import context
 from neutron.openstack.common import importutils
 from neutron.openstack.common import log as logging
 from neutron.openstack.common import loopingcall
 from neutron.openstack.common import periodic_task
+from neutron.plugins.common import constants
 from neutron.services.loadbalancer.drivers.haproxy import (
     agent_api,
     plugin_driver
 )
 
 LOG = logging.getLogger(__name__)
-NS_PREFIX = 'qlbaas-'
 
 OPTS = [
-    cfg.StrOpt(
+    cfg.MultiStrOpt(
         'device_driver',
-        default=('neutron.services.loadbalancer.drivers'
-                 '.haproxy.namespace_driver.HaproxyNSDriver'),
-        help=_('The driver used to manage the loadbalancing device'),
-    ),
-    cfg.StrOpt(
-        'loadbalancer_state_path',
-        default='$state_path/lbaas',
-        help=_('Location to store config and state files'),
+        default=['neutron.services.loadbalancer.drivers'
+                 '.haproxy.namespace_driver.HaproxyNSDriver'],
+        help=_('Drivers used to manage loadbalancing devices'),
     ),
     cfg.StrOpt(
         'interface_driver',
         help=_('The driver used to manage the virtual interface')
     ),
-    cfg.StrOpt(
-        'user_group',
-        default='nogroup',
-        help=_('The user group'),
-    ),
 ]
 
 
-class LogicalDeviceCache(object):
-    """Manage a cache of known devices."""
-
-    class Device(object):
-        """Inner classes used to hold values for weakref lookups."""
-        def __init__(self, port_id, pool_id):
-            self.port_id = port_id
-            self.pool_id = pool_id
-
-        def __eq__(self, other):
-            return self.__dict__ == other.__dict__
-
-        def __hash__(self):
-            return hash((self.port_id, self.pool_id))
-
-    def __init__(self):
-        self.devices = set()
-        self.port_lookup = weakref.WeakValueDictionary()
-        self.pool_lookup = weakref.WeakValueDictionary()
-
-    def put(self, device):
-        port_id = device['vip']['port_id']
-        pool_id = device['pool']['id']
-        d = self.Device(device['vip']['port_id'], device['pool']['id'])
-        if d not in self.devices:
-            self.devices.add(d)
-            self.port_lookup[port_id] = d
-            self.pool_lookup[pool_id] = d
-
-    def remove(self, device):
-        if not isinstance(device, self.Device):
-            device = self.Device(
-                device['vip']['port_id'], device['pool']['id']
-            )
-        if device in self.devices:
-            self.devices.remove(device)
-
-    def remove_by_pool_id(self, pool_id):
-        d = self.pool_lookup.get(pool_id)
-        if d:
-            self.devices.remove(d)
-
-    def get_by_pool_id(self, pool_id):
-        return self.pool_lookup.get(pool_id)
-
-    def get_by_port_id(self, port_id):
-        return self.port_lookup.get(port_id)
-
-    def get_pool_ids(self):
-        return self.pool_lookup.keys()
+class DeviceNotFoundOnAgent(n_exc.NotFound):
+    msg = _('Unknown device with pool_id %(pool_id)s')
 
 
 class LbaasAgentManager(periodic_task.PeriodicTasks):
 
+    RPC_API_VERSION = '2.0'
     # history
     #   1.0 Initial version
     #   1.1 Support agent_updated call
-    RPC_API_VERSION = '1.1'
+    #   2.0 Generic API for agent based drivers
+    #       - modify/reload/destroy_pool methods were removed;
+    #       - added methods to handle create/update/delete for every lbaas
+    #       object individually;
 
     def __init__(self, conf):
         self.conf = conf
-        try:
-            vif_driver = importutils.import_object(conf.interface_driver, conf)
-        except ImportError:
-            msg = _('Error importing interface driver: %s')
-            raise SystemExit(msg % conf.interface_driver)
-
-        try:
-            self.driver = importutils.import_object(
-                conf.device_driver,
-                config.get_root_helper(self.conf),
-                conf.loadbalancer_state_path,
-                vif_driver,
-                self._vip_plug_callback
+        self.context = context.get_admin_context_without_session()
+        self.plugin_rpc = agent_api.LbaasAgentApi(
+            plugin_driver.TOPIC_LOADBALANCER_PLUGIN,
+            self.context,
+            self.conf.host
         )
-        except ImportError:
-            msg = _('Error importing loadbalancer device driver: %s')
-            raise SystemExit(msg % conf.device_driver)
+        self._load_drivers()
 
         self.agent_state = {
             'binary': 'neutron-lbaas-agent',
             'host': conf.host,
             'topic': plugin_driver.TOPIC_LOADBALANCER_AGENT,
-            'configurations': {'device_driver': conf.device_driver,
-                               'interface_driver': conf.interface_driver},
-            'agent_type': constants.AGENT_TYPE_LOADBALANCER,
+            'configurations': {'device_drivers': self.device_drivers.keys()},
+            'agent_type': n_const.AGENT_TYPE_LOADBALANCER,
             'start_flag': True}
         self.admin_state_up = True
 
-        self.context = context.get_admin_context_without_session()
-        self._setup_rpc()
+        self._setup_state_rpc()
         self.needs_resync = False
-        self.cache = LogicalDeviceCache()
+        # pool_id->device_driver_name mapping used to store known instances
+        self.instance_mapping = {}
 
-    def _setup_rpc(self):
-        self.plugin_rpc = agent_api.LbaasAgentApi(
-            plugin_driver.TOPIC_PROCESS_ON_HOST,
-            self.context,
-            self.conf.host
+    def _load_drivers(self):
+        self.device_drivers = {}
+        for driver in self.conf.device_driver:
+            try:
+                driver_inst = importutils.import_object(
+                    driver,
+                    self.conf,
+                    self.plugin_rpc
                 )
+            except ImportError:
+                msg = _('Error importing loadbalancer device driver: %s')
+                raise SystemExit(msg % driver)
+
+            driver_name = driver_inst.get_name()
+            if driver_name not in self.device_drivers:
+                self.device_drivers[driver_name] = driver_inst
+            else:
+                msg = _('Multiple device drivers with the same name found: %s')
+                raise SystemExit(msg % driver_name)
+
+    def _setup_state_rpc(self):
         self.state_rpc = agent_rpc.PluginReportStateAPI(
-            plugin_driver.TOPIC_PROCESS_ON_HOST)
+            plugin_driver.TOPIC_LOADBALANCER_PLUGIN)
         report_interval = self.conf.AGENT.report_interval
         if report_interval:
             heartbeat = loopingcall.FixedIntervalLoopingCall(
@@ -170,8 +118,8 @@ class LbaasAgentManager(periodic_task.PeriodicTasks):
 
     def _report_state(self):
         try:
-            device_count = len(self.cache.devices)
-            self.agent_state['configurations']['devices'] = device_count
+            instance_count = len(self.instance_mapping)
+            self.agent_state['configurations']['instances'] = instance_count
             self.state_rpc.report_state(self.context,
                                         self.agent_state)
             self.agent_state.pop('start_flag', None)
@@ -189,31 +137,26 @@ class LbaasAgentManager(periodic_task.PeriodicTasks):
 
     @periodic_task.periodic_task(spacing=6)
     def collect_stats(self, context):
-        for pool_id in self.cache.get_pool_ids():
+        for pool_id, driver_name in self.instance_mapping.items():
+            driver = self.device_drivers[driver_name]
             try:
-                stats = self.driver.get_stats(pool_id)
+                stats = driver.get_stats(pool_id)
                 if stats:
                     self.plugin_rpc.update_pool_stats(pool_id, stats)
             except Exception:
                 LOG.exception(_('Error upating stats'))
                 self.needs_resync = True
 
-    def _vip_plug_callback(self, action, port):
-        if action == 'plug':
-            self.plugin_rpc.plug_vip_port(port['id'])
-        elif action == 'unplug':
-            self.plugin_rpc.unplug_vip_port(port['id'])
-
     def sync_state(self):
-        known_devices = set(self.cache.get_pool_ids())
+        known_instances = set(self.instance_mapping.keys())
         try:
-            ready_logical_devices = set(self.plugin_rpc.get_ready_devices())
+            ready_instances = set(self.plugin_rpc.get_ready_devices())
 
-            for deleted_id in known_devices - ready_logical_devices:
-                self.destroy_device(deleted_id)
+            for deleted_id in known_instances - ready_instances:
+                self._destroy_pool(deleted_id)
 
-            for pool_id in ready_logical_devices:
-                self.refresh_device(pool_id)
+            for pool_id in ready_instances:
+                self._reload_pool(pool_id)
 
         except Exception:
             LOG.exception(_('Unable to retrieve ready devices'))
@@ -221,51 +164,168 @@ class LbaasAgentManager(periodic_task.PeriodicTasks):
 
         self.remove_orphans()
 
-    def refresh_device(self, pool_id):
+    def _get_driver(self, pool_id):
+        if pool_id not in self.instance_mapping:
+            raise DeviceNotFoundOnAgent(pool_id=pool_id)
+
+        driver_name = self.instance_mapping[pool_id]
+        return self.device_drivers[driver_name]
+
+    def _reload_pool(self, pool_id):
         try:
             logical_config = self.plugin_rpc.get_logical_device(pool_id)
+            driver_name = logical_config['driver']
+            if driver_name not in self.device_drivers:
+                LOG.error(_('No device driver '
+                            'on agent: %s.'), driver_name)
+                self.plugin_rpc.update_status(
+                    'pool', pool_id, constants.ERROR)
+                return
 
-            if self.driver.exists(pool_id):
-                self.driver.update(logical_config)
-            else:
-                self.driver.create(logical_config)
-            self.cache.put(logical_config)
+            self.device_drivers[driver_name].deploy_instance(logical_config)
+            self.instance_mapping[pool_id] = driver_name
+            self.plugin_rpc.pool_deployed(pool_id)
         except Exception:
-            LOG.exception(_('Unable to refresh device for pool: %s'), pool_id)
+            LOG.exception(_('Unable to deploy instance for pool: %s'), pool_id)
             self.needs_resync = True
 
-    def destroy_device(self, pool_id):
-        device = self.cache.get_by_pool_id(pool_id)
-        if not device:
-            return
+    def _destroy_pool(self, pool_id):
+        driver = self._get_driver(pool_id)
         try:
-            self.driver.destroy(pool_id)
+            driver.undeploy_instance(pool_id)
+            del self.instance_mapping[pool_id]
             self.plugin_rpc.pool_destroyed(pool_id)
         except Exception:
             LOG.exception(_('Unable to destroy device for pool: %s'), pool_id)
             self.needs_resync = True
-        self.cache.remove(device)
 
     def remove_orphans(self):
+        for driver_name in self.device_drivers:
+            pool_ids = [pool_id for pool_id in self.instance_mapping
+                        if self.instance_mapping[pool_id] == driver_name]
             try:
-            self.driver.remove_orphans(self.cache.get_pool_ids())
+                self.device_drivers[driver_name].remove_orphans(pool_ids)
             except NotImplementedError:
                 pass  # Not all drivers will support this
 
-    def reload_pool(self, context, pool_id=None, host=None):
-        """Handle RPC cast from plugin to reload a pool."""
-        if pool_id:
-            self.refresh_device(pool_id)
+    def _handle_failed_driver_call(self, operation, obj_type, obj_id, driver):
+        LOG.exception(_('%(operation)s %(obj)s %(id)s failed on device driver '
+                        '%(driver)s'),
+                      {'operation': operation.capitalize(), 'obj': obj_type,
+                       'id': obj_id, 'driver': driver})
+        self.plugin_rpc.update_status(obj_type, obj_id, constants.ERROR)
 
-    def modify_pool(self, context, pool_id=None, host=None):
-        """Handle RPC cast from plugin to modify a pool if known to agent."""
-        if self.cache.get_by_pool_id(pool_id):
-            self.refresh_device(pool_id)
+    def create_vip(self, context, vip):
+        driver = self._get_driver(vip['pool_id'])
+        try:
+            driver.create_vip(vip)
+        except Exception:
+            self._handle_failed_driver_call('create', 'vip', vip['id'],
+                                            driver.get_name())
+        else:
+            self.plugin_rpc.update_status('vip', vip['id'], constants.ACTIVE)
 
-    def destroy_pool(self, context, pool_id=None, host=None):
-        """Handle RPC cast from plugin to destroy a pool if known to agent."""
-        if self.cache.get_by_pool_id(pool_id):
-            self.destroy_device(pool_id)
+    def update_vip(self, context, old_vip, vip):
+        driver = self._get_driver(vip['pool_id'])
+        try:
+            driver.update_vip(old_vip, vip)
+        except Exception:
+            self._handle_failed_driver_call('update', 'vip', vip['id'],
+                                            driver.get_name())
+        else:
+            self.plugin_rpc.update_status('vip', vip['id'], constants.ACTIVE)
+
+    def delete_vip(self, context, vip):
+        driver = self._get_driver(vip['pool_id'])
+        driver.delete_vip(vip)
+
+    def create_pool(self, context, pool, driver_name):
+        if driver_name not in self.device_drivers:
+            LOG.error(_('No device driver on agent: %s.'), driver_name)
+            self.plugin_rpc.update_status('pool', pool['id'], constants.ERROR)
+            return
+
+        driver = self.device_drivers[driver_name]
+        try:
+            driver.create_pool(pool)
+        except Exception:
+            self._handle_failed_driver_call('create', 'pool', pool['id'],
+                                            driver.get_name())
+        else:
+            self.instance_mapping[pool['id']] = driver_name
+            self.plugin_rpc.update_status('pool', pool['id'], constants.ACTIVE)
+
+    def update_pool(self, context, old_pool, pool):
+        driver = self._get_driver(pool['id'])
+        try:
+            driver.update_pool(old_pool, pool)
+        except Exception:
+            self._handle_failed_driver_call('update', 'pool', pool['id'],
+                                            driver.get_name())
+        else:
+            self.plugin_rpc.update_status('pool', pool['id'], constants.ACTIVE)
+
+    def delete_pool(self, context, pool):
+        driver = self._get_driver(pool['id'])
+        driver.delete_pool(pool)
+        del self.instance_mapping[pool['id']]
+
+    def create_member(self, context, member):
+        driver = self._get_driver(member['pool_id'])
+        try:
+            driver.create_member(member)
+        except Exception:
+            self._handle_failed_driver_call('create', 'member', member['id'],
+                                            driver.get_name())
+        else:
+            self.plugin_rpc.update_status('member', member['id'],
+                                          constants.ACTIVE)
+
+    def update_member(self, context, old_member, member):
+        driver = self._get_driver(member['pool_id'])
+        try:
+            driver.update_member(old_member, member)
+        except Exception:
+            self._handle_failed_driver_call('update', 'member', member['id'],
+                                            driver.get_name())
+        else:
+            self.plugin_rpc.update_status('member', member['id'],
+                                          constants.ACTIVE)
+
+    def delete_member(self, context, member):
+        driver = self._get_driver(member['pool_id'])
+        driver.delete_member(member)
+
+    def create_pool_health_monitor(self, context, health_monitor, pool_id):
+        driver = self._get_driver(pool_id)
+        assoc_id = {'pool_id': pool_id, 'monitor_id': health_monitor['id']}
+        try:
+            driver.create_pool_health_monitor(health_monitor, pool_id)
+        except Exception:
+            self._handle_failed_driver_call(
+                'create', 'health_monitor', assoc_id, driver.get_name())
+        else:
+            self.plugin_rpc.update_status(
+                'health_monitor', assoc_id, constants.ACTIVE)
+
+    def update_pool_health_monitor(self, context, old_health_monitor,
+                                   health_monitor, pool_id):
+        driver = self._get_driver(pool_id)
+        assoc_id = {'pool_id': pool_id, 'monitor_id': health_monitor['id']}
+        try:
+            driver.update_pool_health_monitor(old_health_monitor,
+                                              health_monitor,
+                                              pool_id)
+        except Exception:
+            self._handle_failed_driver_call(
+                'update', 'health_monitor', assoc_id, driver.get_name())
+        else:
+            self.plugin_rpc.update_status(
+                'health_monitor', assoc_id, constants.ACTIVE)
+
+    def delete_pool_health_monitor(self, context, health_monitor, pool_id):
+        driver = self._get_driver(pool_id)
+        driver.delete_pool_health_monitor(health_monitor, pool_id)
 
     def agent_updated(self, context, payload):
         """Handle the agent_updated notification event."""
@@ -274,6 +334,8 @@ class LbaasAgentManager(periodic_task.PeriodicTasks):
             if self.admin_state_up:
                 self.needs_resync = True
             else:
-                for pool_id in self.cache.get_pool_ids():
-                    self.destroy_device(pool_id)
-            LOG.info(_("agent_updated by server side %s!"), payload)
+                for pool_id in self.instance_mapping.keys():
+                    LOG.info(_("Destroying pool %s due to agent disabling"),
+                             pool_id)
+                    self._destroy_pool(pool_id)
+            LOG.info(_("Agent_updated by server side %s!"), payload)

neutron/services/loadbalancer/drivers/haproxy/cfg.py

@@ -18,8 +18,6 @@
 
 import itertools
 
-from oslo.config import cfg
-
 from neutron.agent.linux import utils
 from neutron.plugins.common import constants as qconstants
 from neutron.services.loadbalancer import constants
@@ -53,21 +51,23 @@ ACTIVE = qconstants.ACTIVE
 INACTIVE = qconstants.INACTIVE
 
 
-def save_config(conf_path, logical_config, socket_path=None):
+def save_config(conf_path, logical_config, socket_path=None,
+                user_group='nogroup'):
     """Convert a logical configuration to the HAProxy version."""
     data = []
-    data.extend(_build_global(logical_config, socket_path=socket_path))
+    data.extend(_build_global(logical_config, socket_path=socket_path,
+                              user_group=user_group))
     data.extend(_build_defaults(logical_config))
     data.extend(_build_frontend(logical_config))
     data.extend(_build_backend(logical_config))
     utils.replace_file(conf_path, '\n'.join(data))
 
 
-def _build_global(config, socket_path=None):
+def _build_global(config, socket_path=None, user_group='nogroup'):
     opts = [
         'daemon',
         'user nobody',
-        'group %s' % cfg.CONF.user_group,
+        'group %s' % user_group,
         'log /dev/log local0',
         'log /dev/log local1 notice'
     ]

neutron/services/loadbalancer/drivers/haproxy/namespace_driver.py

@@ -20,27 +20,69 @@ import shutil
 import socket
 
 import netaddr
+from oslo.config import cfg
 
+from neutron.agent.common import config
 from neutron.agent.linux import ip_lib
 from neutron.agent.linux import utils
 from neutron.common import exceptions
+from neutron.openstack.common import importutils
 from neutron.openstack.common import log as logging
 from neutron.plugins.common import constants
 from neutron.services.loadbalancer import constants as lb_const
+from neutron.services.loadbalancer.drivers import agent_device_driver
 from neutron.services.loadbalancer.drivers.haproxy import cfg as hacfg
 
 LOG = logging.getLogger(__name__)
 NS_PREFIX = 'qlbaas-'
+DRIVER_NAME = 'haproxy_ns'
+
+ACTIVE_PENDING = (
+    constants.ACTIVE,
+    constants.PENDING_CREATE,
+    constants.PENDING_UPDATE
+)
+
+STATE_PATH_DEFAULT = '$state_path/lbaas'
+USER_GROUP_DEFAULT = 'nogroup'
+OPTS = [
+    cfg.StrOpt(
+        'loadbalancer_state_path',
+        default=STATE_PATH_DEFAULT,
+        help=_('Location to store config and state files'),
+        deprecated_opts=[cfg.DeprecatedOpt('loadbalancer_state_path')],
+    ),
+    cfg.StrOpt(
+        'user_group',
+        default=USER_GROUP_DEFAULT,
+        help=_('The user group'),
+        deprecated_opts=[cfg.DeprecatedOpt('user_group')],
+    )
+]
+cfg.CONF.register_opts(OPTS, 'haproxy')
 
 
-class HaproxyNSDriver(object):
-    def __init__(self, root_helper, state_path, vif_driver, vip_plug_callback):
-        self.root_helper = root_helper
-        self.state_path = state_path
+class HaproxyNSDriver(agent_device_driver.AgentDeviceDriver):
+    def __init__(self, conf, plugin_rpc):
+        self.conf = conf
+        self.root_helper = config.get_root_helper(conf)
+        self.state_path = conf.haproxy.loadbalancer_state_path
+        try:
+            vif_driver = importutils.import_object(conf.interface_driver, conf)
+        except ImportError:
+            msg = (_('Error importing interface driver: %s')
+                   % conf.haproxy.interface_driver)
+            LOG.error(msg)
+            raise
+
         self.vif_driver = vif_driver
-        self.vip_plug_callback = vip_plug_callback
+        self.plugin_rpc = plugin_rpc
         self.pool_to_port_id = {}
 
+    @classmethod
+    def get_name(cls):
+        return DRIVER_NAME
+
     def create(self, logical_config):
         pool_id = logical_config['pool']['id']
         namespace = get_ns_name(pool_id)
@@ -62,8 +104,9 @@ class HaproxyNSDriver(object):
         conf_path = self._get_state_file_path(pool_id, 'conf')
         pid_path = self._get_state_file_path(pool_id, 'pid')
         sock_path = self._get_state_file_path(pool_id, 'sock')
+        user_group = self.conf.haproxy.user_group
 
-        hacfg.save_config(conf_path, logical_config, sock_path)
+        hacfg.save_config(conf_path, logical_config, sock_path, user_group)
         cmd = ['haproxy', '-f', conf_path, '-p', pid_path]
         cmd.extend(extra_cmd_args)
 
@@ -73,7 +116,7 @@ class HaproxyNSDriver(object):
         # remember the pool<>port mapping
         self.pool_to_port_id[pool_id] = logical_config['vip']['port']['id']
 
-    def destroy(self, pool_id):
+    def undeploy_instance(self, pool_id):
         namespace = get_ns_name(pool_id)
         ns = ip_lib.IPWrapper(self.root_helper, namespace)
         pid_path = self._get_state_file_path(pool_id, 'pid')
@@ -176,9 +219,6 @@ class HaproxyNSDriver(object):
 
         return res_stats
 
-    def remove_orphans(self, known_pool_ids):
-        raise NotImplementedError()
-
     def _get_state_file_path(self, pool_id, kind, ensure_state_dir=True):
         """Returns the file name for a given kind of config file."""
         confs_dir = os.path.abspath(os.path.normpath(self.state_path))
@@ -189,7 +229,7 @@ class HaproxyNSDriver(object):
         return os.path.join(conf_dir, kind)
 
     def _plug(self, namespace, port, reuse_existing=True):
-        self.vip_plug_callback('plug', port)
+        self.plugin_rpc.plug_vip_port(port['id'])
         interface_name = self.vif_driver.get_device_name(Wrap(port))
 
         if ip_lib.device_exists(interface_name, self.root_helper, namespace):
@@ -222,10 +262,67 @@ class HaproxyNSDriver(object):
 
     def _unplug(self, namespace, port_id):
         port_stub = {'id': port_id}
-        self.vip_plug_callback('unplug', port_stub)
+        self.plugin_rpc.unplug_vip_port(port_id)
         interface_name = self.vif_driver.get_device_name(Wrap(port_stub))
         self.vif_driver.unplug(interface_name, namespace=namespace)
 
+    def deploy_instance(self, logical_config):
+        # do actual deploy only if vip is configured and active
+        if ('vip' not in logical_config or
+            logical_config['vip']['status'] not in ACTIVE_PENDING or
+            not logical_config['vip']['admin_state_up']):
+            return
+
+        if self.exists(logical_config['pool']['id']):
+            self.update(logical_config)
+        else:
+            self.create(logical_config)
+
+    def _refresh_device(self, pool_id):
+        logical_config = self.plugin_rpc.get_logical_device(pool_id)
+        self.deploy_instance(logical_config)
+
+    def create_vip(self, vip):
+        self._refresh_device(vip['pool_id'])
+
+    def update_vip(self, old_vip, vip):
+        self._refresh_device(vip['pool_id'])
+
+    def delete_vip(self, vip):
+        self.undeploy_instance(vip['pool_id'])
+
+    def create_pool(self, pool):
+        # nothing to do here because a pool needs a vip to be useful
+        pass
+
+    def update_pool(self, old_pool, pool):
+        self._refresh_device(pool['id'])
+
+    def delete_pool(self, pool):
+        # delete_pool may be called before vip deletion in case
+        # pool's admin state set to down
+        if self.exists(pool['id']):
+            self.undeploy_instance(pool['id'])
+
+    def create_member(self, member):
+        self._refresh_device(member['pool_id'])
+
+    def update_member(self, old_member, member):
+        self._refresh_device(member['pool_id'])
+
+    def delete_member(self, member):
+        self._refresh_device(member['pool_id'])
+
+    def create_pool_health_monitor(self, health_monitor, pool_id):
+        self._refresh_device(pool_id)
+
+    def update_pool_health_monitor(self, old_health_monitor, health_monitor,
+                                   pool_id):
+        self._refresh_device(pool_id)
+
+    def delete_pool_health_monitor(self, health_monitor, pool_id):
+        self._refresh_device(pool_id)
+
 
 # NOTE (markmcclain) For compliance with interface.py which expects objects
 class Wrap(object):

neutron/services/loadbalancer/drivers/haproxy/plugin_driver.py

@@ -53,13 +53,23 @@ AGENT_SCHEDULER_OPTS = [
 cfg.CONF.register_opts(AGENT_SCHEDULER_OPTS)
 
 # topic name for this particular agent implementation
-TOPIC_PROCESS_ON_HOST = 'q-lbaas-process-on-host'
-TOPIC_LOADBALANCER_AGENT = 'lbaas_process_on_host_agent'
+TOPIC_LOADBALANCER_PLUGIN = 'n-lbaas-plugin'
+TOPIC_LOADBALANCER_AGENT = 'n-lbaas_agent'
+
+
+class DriverNotSpecified(q_exc.NeutronException):
+    message = _("Device driver for agent should be specified "
+                "in plugin driver.")
 
 
 class LoadBalancerCallbacks(object):
 
-    RPC_API_VERSION = '1.0'
+    RPC_API_VERSION = '2.0'
+    # history
+    #   1.0 Initial version
+    #   2.0 Generic API for agent based drivers
+    #       - get_logical_device() handling changed;
+    #       - pool_deployed() and update_status() methods added;
 
     def __init__(self, plugin):
         self.plugin = plugin
@@ -70,56 +80,36 @@ class LoadBalancerCallbacks(object):
 
     def get_ready_devices(self, context, host=None):
         with context.session.begin(subtransactions=True):
-            qry = (context.session.query(loadbalancer_db.Pool.id).
-                   join(loadbalancer_db.Vip))
-
-            qry = qry.filter(loadbalancer_db.Vip.status.in_(ACTIVE_PENDING))
-            qry = qry.filter(loadbalancer_db.Pool.status.in_(ACTIVE_PENDING))
-            up = True  # makes pep8 and sqlalchemy happy
-            qry = qry.filter(loadbalancer_db.Vip.admin_state_up == up)
-            qry = qry.filter(loadbalancer_db.Pool.admin_state_up == up)
             agents = self.plugin.get_lbaas_agents(context,
                                                   filters={'host': [host]})
             if not agents:
                 return []
             elif len(agents) > 1:
                 LOG.warning(_('Multiple lbaas agents found on host %s'), host)
-
             pools = self.plugin.list_pools_on_lbaas_agent(context,
                                                           agents[0].id)
             pool_ids = [pool['id'] for pool in pools['pools']]
+
+            qry = context.session.query(loadbalancer_db.Pool.id)
             qry = qry.filter(loadbalancer_db.Pool.id.in_(pool_ids))
+            qry = qry.filter(loadbalancer_db.Pool.status.in_(ACTIVE_PENDING))
+            up = True  # makes pep8 and sqlalchemy happy
+            qry = qry.filter(loadbalancer_db.Pool.admin_state_up == up)
             return [id for id, in qry]
 
-    def get_logical_device(self, context, pool_id=None, activate=True,
-                           **kwargs):
+    def get_logical_device(self, context, pool_id=None):
         with context.session.begin(subtransactions=True):
             qry = context.session.query(loadbalancer_db.Pool)
             qry = qry.filter_by(id=pool_id)
             pool = qry.one()
 
-            if activate:
-                # set all resources to active
-                if pool.status in ACTIVE_PENDING:
-                    pool.status = constants.ACTIVE
-
-                if pool.vip.status in ACTIVE_PENDING:
-                    pool.vip.status = constants.ACTIVE
-
-                for m in pool.members:
-                    if m.status in ACTIVE_PENDING:
-                        m.status = constants.ACTIVE
-
-                for hm in pool.monitors:
-                    if hm.status in ACTIVE_PENDING:
-                        hm.status = constants.ACTIVE
-
-            if (pool.status != constants.ACTIVE
-                or pool.vip.status != constants.ACTIVE):
-                raise q_exc.Invalid(_('Expected active pool and vip'))
+            if pool.status != constants.ACTIVE:
+                raise q_exc.Invalid(_('Expected active pool'))
 
             retval = {}
             retval['pool'] = self.plugin._make_pool_dict(pool)
+
+            if pool.vip:
                 retval['vip'] = self.plugin._make_vip_dict(pool.vip)
                 retval['vip']['port'] = (
                     self.plugin._core_plugin._make_port_dict(pool.vip.port)
@@ -141,10 +131,49 @@ class LoadBalancerCallbacks(object):
                 for hm in pool.monitors
                 if hm.status == constants.ACTIVE
             ]
+            retval['driver'] = (
+                self.plugin.drivers[pool.provider.provider_name].device_driver)
 
             return retval
 
-    def pool_destroyed(self, context, pool_id=None, host=None):
+    def pool_deployed(self, context, pool_id):
+        with context.session.begin(subtransactions=True):
+            qry = context.session.query(loadbalancer_db.Pool)
+            qry = qry.filter_by(id=pool_id)
+            pool = qry.one()
+
+            # set all resources to active
+            if pool.status in ACTIVE_PENDING:
+                pool.status = constants.ACTIVE
+
+            if pool.vip and pool.vip.status in ACTIVE_PENDING:
+                pool.vip.status = constants.ACTIVE
+
+            for m in pool.members:
+                if m.status in ACTIVE_PENDING:
+                    m.status = constants.ACTIVE
+
+            for hm in pool.monitors:
+                if hm.status in ACTIVE_PENDING:
+                    hm.status = constants.ACTIVE
+
+    def update_status(self, context, obj_type, obj_id, status):
+        model_mapping = {
+            'pool': loadbalancer_db.Pool,
+            'vip': loadbalancer_db.Vip,
+            'member': loadbalancer_db.Member,
+            'health_monitor': loadbalancer_db.PoolMonitorAssociation
+        }
+        if obj_type not in model_mapping:
+            raise q_exc.Invalid(_('Unknown object type: %s') % obj_type)
+        elif obj_type == 'health_monitor':
+            self.plugin.update_pool_health_monitor(
+                context, obj_id['monitor_id'], obj_id['pool_id'], status)
+        else:
+            self.plugin.update_status(
+                context, model_mapping[obj_type], obj_id, status)
+
+    def pool_destroyed(self, context, pool_id=None):
         """Agent confirmation hook that a pool has been destroyed.
 
         This method exists for subclasses to change the deletion
@@ -214,65 +243,116 @@ class LoadBalancerCallbacks(object):
 class LoadBalancerAgentApi(proxy.RpcProxy):
     """Plugin side of plugin to agent RPC API."""
 
-    BASE_RPC_API_VERSION = '1.0'
+    BASE_RPC_API_VERSION = '2.0'
     # history
     #   1.0 Initial version
     #   1.1 Support agent_updated call
+    #   2.0 Generic API for agent based drivers
+    #       - modify/reload/destroy_pool methods were removed;
+    #       - added methods to handle create/update/delete for every lbaas
+    #       object individually;
 
     def __init__(self, topic):
         super(LoadBalancerAgentApi, self).__init__(
             topic, default_version=self.BASE_RPC_API_VERSION)
 
-    def reload_pool(self, context, pool_id, host):
+    def _cast(self, context, method_name, method_args, host, version=None):
         return self.cast(
             context,
-            self.make_msg('reload_pool', pool_id=pool_id, host=host),
-            topic='%s.%s' % (self.topic, host)
+            self.make_msg(method_name, **method_args),
+            topic='%s.%s' % (self.topic, host),
+            version=version
         )
 
-    def destroy_pool(self, context, pool_id, host):
-        return self.cast(
-            context,
-            self.make_msg('destroy_pool', pool_id=pool_id, host=host),
-            topic='%s.%s' % (self.topic, host)
-        )
+    def create_vip(self, context, vip, host):
+        return self._cast(context, 'create_vip', {'vip': vip}, host)
 
-    def modify_pool(self, context, pool_id, host):
-        return self.cast(
-            context,
-            self.make_msg('modify_pool', pool_id=pool_id, host=host),
-            topic='%s.%s' % (self.topic, host)
-        )
+    def update_vip(self, context, old_vip, vip, host):
+        return self._cast(context, 'update_vip',
+                          {'old_vip': old_vip, 'vip': vip}, host)
+
+    def delete_vip(self, context, vip, host):
+        return self._cast(context, 'delete_vip', {'vip': vip}, host)
+
+    def create_pool(self, context, pool, host, driver_name):
+        return self._cast(context, 'create_pool',
+                          {'pool': pool, 'driver_name': driver_name}, host)
+
+    def update_pool(self, context, old_pool, pool, host):
+        return self._cast(context, 'update_pool',
+                          {'old_pool': old_pool, 'pool': pool}, host)
+
+    def delete_pool(self, context, pool, host):
+        return self._cast(context, 'delete_pool', {'pool': pool}, host)
+
+    def create_member(self, context, member, host):
+        return self._cast(context, 'create_member', {'member': member}, host)
+
+    def update_member(self, context, old_member, member, host):
+        return self._cast(context, 'update_member',
+                          {'old_member': old_member, 'member': member}, host)
+
+    def delete_member(self, context, member, host):
+        return self._cast(context, 'delete_member', {'member': member}, host)
+
+    def create_pool_health_monitor(self, context, health_monitor, pool_id,
+                                   host):
+        return self._cast(context, 'create_pool_health_monitor',
+                          {'health_monitor': health_monitor,
+                           'pool_id': pool_id}, host)
+
+    def update_pool_health_monitor(self, context, old_health_monitor,
+                                   health_monitor, pool_id, host):
+        return self._cast(context, 'update_pool_health_monitor',
+                          {'old_health_monitor': old_health_monitor,
+                           'health_monitor': health_monitor,
+                           'pool_id': pool_id}, host)
+
+    def delete_pool_health_monitor(self, context, health_monitor, pool_id,
+                                   host):
+        return self._cast(context, 'delete_pool_health_monitor',
+                          {'health_monitor': health_monitor,
+                           'pool_id': pool_id}, host)
 
     def agent_updated(self, context, admin_state_up, host):
-        return self.cast(
-            context,
-            self.make_msg('agent_updated',
-                          payload={'admin_state_up': admin_state_up}),
-            topic='%s.%s' % (self.topic, host),
-            version='1.1'
-        )
+        return self._cast(context, 'agent_updated',
+                          {'payload': {'admin_state_up': admin_state_up}},
+                          host)
 
 
-class HaproxyOnHostPluginDriver(abstract_driver.LoadBalancerAbstractDriver):
+class AgentBasedPluginDriver(abstract_driver.LoadBalancerAbstractDriver):
+
+    # name of device driver that should be used by the agent;
+    # vendor specific plugin drivers must override it;
+    device_driver = None
 
     def __init__(self, plugin):
-        self.agent_rpc = LoadBalancerAgentApi(TOPIC_LOADBALANCER_AGENT)
-        self.callbacks = LoadBalancerCallbacks(plugin)
+        if not self.device_driver:
+            raise DriverNotSpecified()
+
+        self.agent_rpc = LoadBalancerAgentApi(TOPIC_LOADBALANCER_AGENT)
 
-        self.conn = rpc.create_connection(new=True)
-        self.conn.create_consumer(
-            TOPIC_PROCESS_ON_HOST,
-            self.callbacks.create_rpc_dispatcher(),
-            fanout=False)
-        self.conn.consume_in_thread()
         self.plugin = plugin
+        self._set_callbacks_on_plugin()
         self.plugin.agent_notifiers.update(
             {q_const.AGENT_TYPE_LOADBALANCER: self.agent_rpc})
 
         self.pool_scheduler = importutils.import_object(
             cfg.CONF.loadbalancer_pool_scheduler_driver)
 
+    def _set_callbacks_on_plugin(self):
+        # other agent based plugin driver might already set callbacks on plugin
+        if hasattr(self.plugin, 'agent_callbacks'):
+            return
+
+        self.plugin.agent_callbacks = LoadBalancerCallbacks(self.plugin)
+        self.plugin.conn = rpc.create_connection(new=True)
+        self.plugin.conn.create_consumer(
+            TOPIC_LOADBALANCER_PLUGIN,
+            self.plugin.agent_callbacks.create_rpc_dispatcher(),
+            fanout=False)
+        self.plugin.conn.consume_in_thread()
+
     def get_pool_agent(self, context, pool_id):
         agent = self.plugin.get_lbaas_agent_hosting_pool(context, pool_id)
         if not agent:
@@ -281,80 +361,95 @@ class HaproxyOnHostPluginDriver(abstract_driver.LoadBalancerAbstractDriver):
 
     def create_vip(self, context, vip):
         agent = self.get_pool_agent(context, vip['pool_id'])
-        self.agent_rpc.reload_pool(context, vip['pool_id'], agent['host'])
+        self.agent_rpc.create_vip(context, vip, agent['host'])
 
     def update_vip(self, context, old_vip, vip):
         agent = self.get_pool_agent(context, vip['pool_id'])
         if vip['status'] in ACTIVE_PENDING:
-            self.agent_rpc.reload_pool(context, vip['pool_id'], agent['host'])
+            self.agent_rpc.update_vip(context, old_vip, vip, agent['host'])
         else:
-            self.agent_rpc.destroy_pool(context, vip['pool_id'], agent['host'])
+            self.agent_rpc.delete_vip(context, vip, agent['host'])
 
     def delete_vip(self, context, vip):
         self.plugin._delete_db_vip(context, vip['id'])
         agent = self.get_pool_agent(context, vip['pool_id'])
-        self.agent_rpc.destroy_pool(context, vip['pool_id'], agent['host'])
+        self.agent_rpc.delete_vip(context, vip, agent['host'])
 
     def create_pool(self, context, pool):
-        if not self.pool_scheduler.schedule(self.plugin, context, pool):
+        agent = self.pool_scheduler.schedule(self.plugin, context, pool,
+                                             self.device_driver)
+        if not agent:
             raise lbaas_agentscheduler.NoEligibleLbaasAgent(pool_id=pool['id'])
-        # don't notify here because a pool needs a vip to be useful
+        self.agent_rpc.create_pool(context, pool, agent['host'],
+                                   self.device_driver)
 
     def update_pool(self, context, old_pool, pool):
         agent = self.get_pool_agent(context, pool['id'])
         if pool['status'] in ACTIVE_PENDING:
-            if pool['vip_id'] is not None:
-                self.agent_rpc.reload_pool(context, pool['id'], agent['host'])
+            self.agent_rpc.update_pool(context, old_pool, pool,
+                                       agent['host'])
         else:
-            self.agent_rpc.destroy_pool(context, pool['id'], agent['host'])
+            self.agent_rpc.delete_pool(context, pool, agent['host'])
 
     def delete_pool(self, context, pool):
+        # get agent first to know host as binding will be deleted
+        # after pool is deleted from db
         agent = self.plugin.get_lbaas_agent_hosting_pool(context, pool['id'])
-        if agent:
-            self.agent_rpc.destroy_pool(context, pool['id'],
-                                        agent['agent']['host'])
         self.plugin._delete_db_pool(context, pool['id'])
+        if agent:
+            self.agent_rpc.delete_pool(context, pool, agent['agent']['host'])
 
     def create_member(self, context, member):
         agent = self.get_pool_agent(context, member['pool_id'])
-        self.agent_rpc.modify_pool(context, member['pool_id'], agent['host'])
+        self.agent_rpc.create_member(context, member, agent['host'])
 
     def update_member(self, context, old_member, member):
+        agent = self.get_pool_agent(context, member['pool_id'])
         # member may change pool id
         if member['pool_id'] != old_member['pool_id']:
-            agent = self.plugin.get_lbaas_agent_hosting_pool(
+            old_pool_agent = self.plugin.get_lbaas_agent_hosting_pool(
                 context, old_member['pool_id'])
-            if agent:
-                self.agent_rpc.modify_pool(context,
-                                           old_member['pool_id'],
-                                           agent['agent']['host'])
-        agent = self.get_pool_agent(context, member['pool_id'])
-        self.agent_rpc.modify_pool(context, member['pool_id'], agent['host'])
+            if old_pool_agent:
+                self.agent_rpc.delete_member(context, old_member,
+                                             old_pool_agent['agent']['host'])
+            self.agent_rpc.create_member(context, member, agent['host'])
+        else:
+            self.agent_rpc.update_member(context, old_member, member,
+                                         agent['host'])
 
     def delete_member(self, context, member):
         self.plugin._delete_db_member(context, member['id'])
         agent = self.get_pool_agent(context, member['pool_id'])
-        self.agent_rpc.modify_pool(context, member['pool_id'], agent['host'])
-
-    def update_health_monitor(self, context, old_health_monitor,
-                              health_monitor, pool_id):
-        # monitors are unused here because agent will fetch what is necessary
-        agent = self.get_pool_agent(context, pool_id)
-        self.agent_rpc.modify_pool(context, pool_id, agent['host'])
+        self.agent_rpc.delete_member(context, member, agent['host'])
 
     def create_pool_health_monitor(self, context, healthmon, pool_id):
         # healthmon is not used here
         agent = self.get_pool_agent(context, pool_id)
-        self.agent_rpc.modify_pool(context, pool_id, agent['host'])
+        self.agent_rpc.create_pool_health_monitor(context, healthmon,
+                                                  pool_id, agent['host'])
+
+    def update_pool_health_monitor(self, context, old_health_monitor,
+                                   health_monitor, pool_id):
+        agent = self.get_pool_agent(context, pool_id)
+        self.agent_rpc.update_pool_health_monitor(context, old_health_monitor,
+                                                  health_monitor, pool_id,
+                                                  agent['host'])
 
     def delete_pool_health_monitor(self, context, health_monitor, pool_id):
         self.plugin._delete_db_pool_health_monitor(
             context, health_monitor['id'], pool_id
         )
 
-        # healthmon_id is not used here
         agent = self.get_pool_agent(context, pool_id)
-        self.agent_rpc.modify_pool(context, pool_id, agent['host'])
+        self.agent_rpc.delete_pool_health_monitor(context, health_monitor,
+                                                  pool_id, agent['host'])
 
     def stats(self, context, pool_id):
         pass
+
+
+class HaproxyOnHostPluginDriver(AgentBasedPluginDriver):
+    #TODO(obondarev): change hardcoded driver name
+    # to namespace_driver.DRIVER_NAME after moving HaproxyOnHostPluginDriver
+    # to a separate file (follow-up patch)
+    device_driver = 'haproxy_ns'

neutron/services/loadbalancer/drivers/radware/driver.py

@@ -285,7 +285,7 @@ class LoadBalancerDriver(abstract_driver.LoadBalancerAbstractDriver):
         # Anything to do here? the hm is not connected to the graph yet
         pass
 
-    def update_health_monitor(self, context, old_health_monitor,
+    def update_pool_health_monitor(self, context, old_health_monitor,
                                    health_monitor,
                                    pool_id):
         self._handle_pool_health_monitor(context, health_monitor, pool_id)

neutron/services/loadbalancer/plugin.py

@@ -242,7 +242,7 @@ class LoadBalancerPlugin(ldb.LoadBalancerPluginDb,
             ).filter_by(monitor_id=hm['id']).join(ldb.Pool)
             for assoc in qry:
                 driver = self._get_driver_for_pool(context, assoc['pool_id'])
-                driver.update_health_monitor(context, old_hm,
+                driver.update_pool_health_monitor(context, old_hm,
                                                   hm, assoc['pool_id'])
         return hm
 

neutron/tests/unit/db/loadbalancer/test_db_loadbalancer.py

@@ -102,7 +102,7 @@ class NoopLbaaSDriver(abstract_driver.LoadBalancerAbstractDriver):
     def delete_member(self, context, member):
         self.plugin._delete_db_member(context, member["id"])
 
-    def update_health_monitor(self, context, old_health_monitor,
+    def update_pool_health_monitor(self, context, old_health_monitor,
                                    health_monitor,
                                    pool_association):
         pass

neutron/tests/unit/services/loadbalancer/drivers/haproxy/test_agent_manager.py

@@ -20,129 +20,20 @@ import contextlib
 
 import mock
 
+from neutron.plugins.common import constants
 from neutron.services.loadbalancer.drivers.haproxy import (
     agent_manager as manager
 )
 from neutron.tests import base
 
 
-class TestLogicalDeviceCache(base.BaseTestCase):
-    def setUp(self):
-        super(TestLogicalDeviceCache, self).setUp()
-        self.cache = manager.LogicalDeviceCache()
-
-    def test_put(self):
-        fake_device = {
-            'vip': {'port_id': 'port_id'},
-            'pool': {'id': 'pool_id'}
-        }
-        self.cache.put(fake_device)
-
-        self.assertEqual(len(self.cache.devices), 1)
-        self.assertEqual(len(self.cache.port_lookup), 1)
-        self.assertEqual(len(self.cache.pool_lookup), 1)
-
-    def test_double_put(self):
-        fake_device = {
-            'vip': {'port_id': 'port_id'},
-            'pool': {'id': 'pool_id'}
-        }
-        self.cache.put(fake_device)
-        self.cache.put(fake_device)
-
-        self.assertEqual(len(self.cache.devices), 1)
-        self.assertEqual(len(self.cache.port_lookup), 1)
-        self.assertEqual(len(self.cache.pool_lookup), 1)
-
-    def test_remove_in_cache(self):
-        fake_device = {
-            'vip': {'port_id': 'port_id'},
-            'pool': {'id': 'pool_id'}
-        }
-        self.cache.put(fake_device)
-
-        self.assertEqual(len(self.cache.devices), 1)
-
-        self.cache.remove(fake_device)
-
-        self.assertFalse(len(self.cache.devices))
-        self.assertFalse(self.cache.port_lookup)
-        self.assertFalse(self.cache.pool_lookup)
-
-    def test_remove_in_cache_same_object(self):
-        fake_device = {
-            'vip': {'port_id': 'port_id'},
-            'pool': {'id': 'pool_id'}
-        }
-        self.cache.put(fake_device)
-
-        self.assertEqual(len(self.cache.devices), 1)
-
-        self.cache.remove(set(self.cache.devices).pop())
-
-        self.assertFalse(len(self.cache.devices))
-        self.assertFalse(self.cache.port_lookup)
-        self.assertFalse(self.cache.pool_lookup)
-
-    def test_remove_by_pool_id(self):
-        fake_device = {
-            'vip': {'port_id': 'port_id'},
-            'pool': {'id': 'pool_id'}
-        }
-        self.cache.put(fake_device)
-
-        self.assertEqual(len(self.cache.devices), 1)
-
-        self.cache.remove_by_pool_id('pool_id')
-
-        self.assertFalse(len(self.cache.devices))
-        self.assertFalse(self.cache.port_lookup)
-        self.assertFalse(self.cache.pool_lookup)
-
-    def test_get_by_pool_id(self):
-        fake_device = {
-            'vip': {'port_id': 'port_id'},
-            'pool': {'id': 'pool_id'}
-        }
-        self.cache.put(fake_device)
-
-        dev = self.cache.get_by_pool_id('pool_id')
-
-        self.assertEqual(dev.pool_id, 'pool_id')
-        self.assertEqual(dev.port_id, 'port_id')
-
-    def test_get_by_port_id(self):
-        fake_device = {
-            'vip': {'port_id': 'port_id'},
-            'pool': {'id': 'pool_id'}
-        }
-        self.cache.put(fake_device)
-
-        dev = self.cache.get_by_port_id('port_id')
-
-        self.assertEqual(dev.pool_id, 'pool_id')
-        self.assertEqual(dev.port_id, 'port_id')
-
-    def test_get_pool_ids(self):
-        fake_device = {
-            'vip': {'port_id': 'port_id'},
-            'pool': {'id': 'pool_id'}
-        }
-        self.cache.put(fake_device)
-
-        self.assertEqual(self.cache.get_pool_ids(), ['pool_id'])
-
-
 class TestManager(base.BaseTestCase):
     def setUp(self):
         super(TestManager, self).setUp()
         self.addCleanup(mock.patch.stopall)
 
         mock_conf = mock.Mock()
-        mock_conf.interface_driver = 'intdriver'
-        mock_conf.device_driver = 'devdriver'
-        mock_conf.AGENT.root_helper = 'sudo'
-        mock_conf.loadbalancer_state_path = '/the/path'
+        mock_conf.device_driver = ['devdriver']
 
         self.mock_importer = mock.patch.object(manager, 'importutils').start()
 
@@ -154,6 +45,9 @@ class TestManager(base.BaseTestCase):
         self.mgr = manager.LbaasAgentManager(mock_conf)
         self.rpc_mock = rpc_mock_cls.return_value
         self.log = mock.patch.object(manager, 'LOG').start()
+        self.driver_mock = mock.Mock()
+        self.mgr.device_drivers = {'devdriver': self.driver_mock}
+        self.mgr.instance_mapping = {'1': 'devdriver', '2': 'devdriver'}
         self.mgr.needs_resync = False
 
     def test_initialize_service_hook(self):
@@ -174,8 +68,6 @@ class TestManager(base.BaseTestCase):
             self.assertFalse(sync.called)
 
     def test_collect_stats(self):
-        with mock.patch.object(self.mgr, 'cache') as cache:
-            cache.get_pool_ids.return_value = ['1', '2']
         self.mgr.collect_stats(mock.Mock())
         self.rpc_mock.update_pool_stats.assert_has_calls([
             mock.call('1', mock.ANY),
@@ -183,10 +75,7 @@ class TestManager(base.BaseTestCase):
         ])
 
     def test_collect_stats_exception(self):
-        with mock.patch.object(self.mgr, 'cache') as cache:
-            cache.get_pool_ids.return_value = ['1', '2']
-            with mock.patch.object(self.mgr, 'driver') as driver:
-                driver.get_stats.side_effect = Exception
+        self.driver_mock.get_stats.side_effect = Exception
 
         self.mgr.collect_stats(mock.Mock())
 
@@ -194,44 +83,36 @@ class TestManager(base.BaseTestCase):
         self.assertTrue(self.mgr.needs_resync)
         self.assertTrue(self.log.exception.called)
 
-    def test_vip_plug_callback(self):
-        self.mgr._vip_plug_callback('plug', {'id': 'id'})
-        self.rpc_mock.plug_vip_port.assert_called_once_with('id')
-
-    def test_vip_unplug_callback(self):
-        self.mgr._vip_plug_callback('unplug', {'id': 'id'})
-        self.rpc_mock.unplug_vip_port.assert_called_once_with('id')
-
-    def _sync_state_helper(self, cache, ready, refreshed, destroyed):
+    def _sync_state_helper(self, ready, reloaded, destroyed):
         with contextlib.nested(
-            mock.patch.object(self.mgr, 'cache'),
-            mock.patch.object(self.mgr, 'refresh_device'),
-            mock.patch.object(self.mgr, 'destroy_device')
-        ) as (mock_cache, refresh, destroy):
+            mock.patch.object(self.mgr, '_reload_pool'),
+            mock.patch.object(self.mgr, '_destroy_pool')
+        ) as (reload, destroy):
 
-            mock_cache.get_pool_ids.return_value = cache
             self.rpc_mock.get_ready_devices.return_value = ready
 
             self.mgr.sync_state()
 
-            self.assertEqual(len(refreshed), len(refresh.mock_calls))
+            self.assertEqual(len(reloaded), len(reload.mock_calls))
             self.assertEqual(len(destroyed), len(destroy.mock_calls))
 
-            refresh.assert_has_calls([mock.call(i) for i in refreshed])
+            reload.assert_has_calls([mock.call(i) for i in reloaded])
             destroy.assert_has_calls([mock.call(i) for i in destroyed])
             self.assertFalse(self.mgr.needs_resync)
 
     def test_sync_state_all_known(self):
-        self._sync_state_helper(['1', '2'], ['1', '2'], ['1', '2'], [])
+        self._sync_state_helper(['1', '2'], ['1', '2'], [])
 
     def test_sync_state_all_unknown(self):
-        self._sync_state_helper([], ['1', '2'], ['1', '2'], [])
+        self.mgr.instance_mapping = {}
+        self._sync_state_helper(['1', '2'], ['1', '2'], [])
 
     def test_sync_state_destroy_all(self):
-        self._sync_state_helper(['1', '2'], [], [], ['1', '2'])
+        self._sync_state_helper([], [], ['1', '2'])
 
     def test_sync_state_both(self):
-        self._sync_state_helper(['1'], ['2'], ['2'], ['1'])
+        self.mgr.instance_mapping = {'1': 'devdriver'}
+        self._sync_state_helper(['2'], ['2'], ['1'])
 
     def test_sync_state_exception(self):
         self.rpc_mock.get_ready_devices.side_effect = Exception
@@ -241,127 +122,251 @@ class TestManager(base.BaseTestCase):
         self.assertTrue(self.log.exception.called)
         self.assertTrue(self.mgr.needs_resync)
 
-    def test_refresh_device_exists(self):
-        config = self.rpc_mock.get_logical_device.return_value
+    def test_reload_pool(self):
+        config = {'driver': 'devdriver'}
+        self.rpc_mock.get_logical_device.return_value = config
+        pool_id = 'new_id'
+        self.assertNotIn(pool_id, self.mgr.instance_mapping)
 
-        with mock.patch.object(self.mgr, 'driver') as driver:
-            with mock.patch.object(self.mgr, 'cache') as cache:
-                driver.exists.return_value = True
+        self.mgr._reload_pool(pool_id)
 
-                self.mgr.refresh_device(config)
+        self.driver_mock.deploy_instance.assert_called_once_with(config)
+        self.assertIn(pool_id, self.mgr.instance_mapping)
+        self.rpc_mock.pool_deployed.assert_called_once_with(pool_id)
 
-                driver.exists.assert_called_once_with(config)
-                driver.update.assert_called_once_with(config)
-                cache.put.assert_called_once_with(config)
-                self.assertFalse(self.mgr.needs_resync)
+    def test_reload_pool_driver_not_found(self):
+        config = {'driver': 'unknown_driver'}
+        self.rpc_mock.get_logical_device.return_value = config
+        pool_id = 'new_id'
+        self.assertNotIn(pool_id, self.mgr.instance_mapping)
 
-    def test_refresh_device_new(self):
-        config = self.rpc_mock.get_logical_device.return_value
+        self.mgr._reload_pool(pool_id)
 
-        with mock.patch.object(self.mgr, 'driver') as driver:
-            with mock.patch.object(self.mgr, 'cache') as cache:
-                driver.exists.return_value = False
+        self.assertTrue(self.log.error.called)
+        self.assertFalse(self.driver_mock.deploy_instance.called)
+        self.assertNotIn(pool_id, self.mgr.instance_mapping)
+        self.assertFalse(self.rpc_mock.pool_deployed.called)
 
-                self.mgr.refresh_device(config)
+    def test_reload_pool_exception_on_driver(self):
+        config = {'driver': 'devdriver'}
+        self.rpc_mock.get_logical_device.return_value = config
+        self.driver_mock.deploy_instance.side_effect = Exception
+        pool_id = 'new_id'
+        self.assertNotIn(pool_id, self.mgr.instance_mapping)
 
-                driver.exists.assert_called_once_with(config)
-                driver.create.assert_called_once_with(config)
-                cache.put.assert_called_once_with(config)
-                self.assertFalse(self.mgr.needs_resync)
-
-    def test_refresh_device_exception(self):
-        config = self.rpc_mock.get_logical_device.return_value
-
-        with mock.patch.object(self.mgr, 'driver') as driver:
-            with mock.patch.object(self.mgr, 'cache') as cache:
-                driver.exists.side_effect = Exception
-                self.mgr.refresh_device(config)
-
-                driver.exists.assert_called_once_with(config)
-                self.assertTrue(self.mgr.needs_resync)
-                self.assertTrue(self.log.exception.called)
-                self.assertFalse(cache.put.called)
-
-    def test_destroy_device_known(self):
-        with mock.patch.object(self.mgr, 'driver') as driver:
-            with mock.patch.object(self.mgr, 'cache') as cache:
-                cache.get_by_pool_id.return_value = True
-
-                self.mgr.destroy_device('pool_id')
-                cache.get_by_pool_id.assert_called_once_with('pool_id')
-                driver.destroy.assert_called_once_with('pool_id')
-                self.rpc_mock.pool_destroyed.assert_called_once_with(
-                    'pool_id'
-                )
-                cache.remove.assert_called_once_with(True)
-                self.assertFalse(self.mgr.needs_resync)
-
-    def test_destroy_device_unknown(self):
-        with mock.patch.object(self.mgr, 'driver') as driver:
-            with mock.patch.object(self.mgr, 'cache') as cache:
-                cache.get_by_pool_id.return_value = None
-
-                self.mgr.destroy_device('pool_id')
-                cache.get_by_pool_id.assert_called_once_with('pool_id')
-                self.assertFalse(driver.destroy.called)
-
-    def test_destroy_device_exception(self):
-        with mock.patch.object(self.mgr, 'driver') as driver:
-            with mock.patch.object(self.mgr, 'cache') as cache:
-                cache.get_by_pool_id.return_value = True
-                driver.destroy.side_effect = Exception
-
-                self.mgr.destroy_device('pool_id')
-                cache.get_by_pool_id.assert_called_once_with('pool_id')
+        self.mgr._reload_pool(pool_id)
 
+        self.driver_mock.deploy_instance.assert_called_once_with(config)
+        self.assertNotIn(pool_id, self.mgr.instance_mapping)
+        self.assertFalse(self.rpc_mock.pool_deployed.called)
         self.assertTrue(self.log.exception.called)
         self.assertTrue(self.mgr.needs_resync)
 
+    def test_destroy_pool(self):
+        pool_id = '1'
+        self.assertIn(pool_id, self.mgr.instance_mapping)
+
+        self.mgr._destroy_pool(pool_id)
+
+        self.driver_mock.undeploy_instance.assert_called_once_with(pool_id)
+        self.assertNotIn(pool_id, self.mgr.instance_mapping)
+        self.rpc_mock.pool_destroyed.assert_called_once_with(pool_id)
+        self.assertFalse(self.mgr.needs_resync)
+
+    def test_destroy_pool_exception_on_driver(self):
+        pool_id = '1'
+        self.assertIn(pool_id, self.mgr.instance_mapping)
+        self.driver_mock.undeploy_instance.side_effect = Exception
+
+        self.mgr._destroy_pool(pool_id)
+
+        self.driver_mock.undeploy_instance.assert_called_once_with(pool_id)
+        self.assertIn(pool_id, self.mgr.instance_mapping)
+        self.assertFalse(self.rpc_mock.pool_destroyed.called)
+        self.assertTrue(self.log.exception.called)
+        self.assertTrue(self.mgr.needs_resync)
+
+    def test_get_driver_unknown_device(self):
+        self.assertRaises(manager.DeviceNotFoundOnAgent,
+                          self.mgr._get_driver, 'unknown')
+
     def test_remove_orphans(self):
-        with mock.patch.object(self.mgr, 'driver') as driver:
-            with mock.patch.object(self.mgr, 'cache') as cache:
-                cache.get_pool_ids.return_value = ['1', '2']
         self.mgr.remove_orphans()
+        self.driver_mock.remove_orphans.assert_called_once_with(['1', '2'])
 
-                driver.remove_orphans.assert_called_once_with(['1', '2'])
+    def test_create_vip(self):
+        vip = {'id': 'id1', 'pool_id': '1'}
+        self.mgr.create_vip(mock.Mock(), vip)
+        self.driver_mock.create_vip.assert_called_once_with(vip)
+        self.rpc_mock.update_status.assert_called_once_with('vip', vip['id'],
+                                                            constants.ACTIVE)
 
-    def test_reload_pool(self):
-        with mock.patch.object(self.mgr, 'refresh_device') as refresh:
-            self.mgr.reload_pool(mock.Mock(), pool_id='pool_id')
-            refresh.assert_called_once_with('pool_id')
+    def test_create_vip_failed(self):
+        vip = {'id': 'id1', 'pool_id': '1'}
+        self.driver_mock.create_vip.side_effect = Exception
+        self.mgr.create_vip(mock.Mock(), vip)
+        self.driver_mock.create_vip.assert_called_once_with(vip)
+        self.rpc_mock.update_status.assert_called_once_with('vip', vip['id'],
+                                                            constants.ERROR)
 
-    def test_modify_pool_known(self):
-        with mock.patch.object(self.mgr, 'refresh_device') as refresh:
-            with mock.patch.object(self.mgr, 'cache') as cache:
-                cache.get_by_pool_id.return_value = True
+    def test_update_vip(self):
+        old_vip = {'id': 'id1'}
+        vip = {'id': 'id1', 'pool_id': '1'}
+        self.mgr.update_vip(mock.Mock(), old_vip, vip)
+        self.driver_mock.update_vip.assert_called_once_with(old_vip, vip)
+        self.rpc_mock.update_status.assert_called_once_with('vip', vip['id'],
+                                                            constants.ACTIVE)
 
-                self.mgr.reload_pool(mock.Mock(), pool_id='pool_id')
+    def test_update_vip_failed(self):
+        old_vip = {'id': 'id1'}
+        vip = {'id': 'id1', 'pool_id': '1'}
+        self.driver_mock.update_vip.side_effect = Exception
+        self.mgr.update_vip(mock.Mock(), old_vip, vip)
+        self.driver_mock.update_vip.assert_called_once_with(old_vip, vip)
+        self.rpc_mock.update_status.assert_called_once_with('vip', vip['id'],
+                                                            constants.ERROR)
 
-                refresh.assert_called_once_with('pool_id')
+    def test_delete_vip(self):
+        vip = {'id': 'id1', 'pool_id': '1'}
+        self.mgr.delete_vip(mock.Mock(), vip)
+        self.driver_mock.delete_vip.assert_called_once_with(vip)
 
-    def test_modify_pool_unknown(self):
-        with mock.patch.object(self.mgr, 'refresh_device') as refresh:
-            with mock.patch.object(self.mgr, 'cache') as cache:
-                cache.get_by_pool_id.return_value = False
+    def test_create_pool(self):
+        pool = {'id': 'id1'}
+        self.assertNotIn(pool['id'], self.mgr.instance_mapping)
+        self.mgr.create_pool(mock.Mock(), pool, 'devdriver')
+        self.driver_mock.create_pool.assert_called_once_with(pool)
+        self.rpc_mock.update_status.assert_called_once_with('pool', pool['id'],
+                                                            constants.ACTIVE)
+        self.assertIn(pool['id'], self.mgr.instance_mapping)
 
-                self.mgr.modify_pool(mock.Mock(), pool_id='pool_id')
+    def test_create_pool_failed(self):
+        pool = {'id': 'id1'}
+        self.assertNotIn(pool['id'], self.mgr.instance_mapping)
+        self.driver_mock.create_pool.side_effect = Exception
+        self.mgr.create_pool(mock.Mock(), pool, 'devdriver')
+        self.driver_mock.create_pool.assert_called_once_with(pool)
+        self.rpc_mock.update_status.assert_called_once_with('pool', pool['id'],
+                                                            constants.ERROR)
+        self.assertNotIn(pool['id'], self.mgr.instance_mapping)
 
-                self.assertFalse(refresh.called)
+    def test_update_pool(self):
+        old_pool = {'id': '1'}
+        pool = {'id': '1'}
+        self.mgr.update_pool(mock.Mock(), old_pool, pool)
+        self.driver_mock.update_pool.assert_called_once_with(old_pool, pool)
+        self.rpc_mock.update_status.assert_called_once_with('pool', pool['id'],
+                                                            constants.ACTIVE)
 
-    def test_destroy_pool_known(self):
-        with mock.patch.object(self.mgr, 'destroy_device') as destroy:
-            with mock.patch.object(self.mgr, 'cache') as cache:
-                cache.get_by_pool_id.return_value = True
+    def test_update_pool_failed(self):
+        old_pool = {'id': '1'}
+        pool = {'id': '1'}
+        self.driver_mock.update_pool.side_effect = Exception
+        self.mgr.update_pool(mock.Mock(), old_pool, pool)
+        self.driver_mock.update_pool.assert_called_once_with(old_pool, pool)
+        self.rpc_mock.update_status.assert_called_once_with('pool', pool['id'],
+                                                            constants.ERROR)
 
-                self.mgr.destroy_pool(mock.Mock(), pool_id='pool_id')
+    def test_delete_pool(self):
+        pool = {'id': '1'}
+        self.assertIn(pool['id'], self.mgr.instance_mapping)
+        self.mgr.delete_pool(mock.Mock(), pool)
+        self.driver_mock.delete_pool.assert_called_once_with(pool)
+        self.assertNotIn(pool['id'], self.mgr.instance_mapping)
 
-                destroy.assert_called_once_with('pool_id')
+    def test_create_member(self):
+        member = {'id': 'id1', 'pool_id': '1'}
+        self.mgr.create_member(mock.Mock(), member)
+        self.driver_mock.create_member.assert_called_once_with(member)
+        self.rpc_mock.update_status.assert_called_once_with('member',
+                                                            member['id'],
+                                                            constants.ACTIVE)
 
-    def test_destroy_pool_unknown(self):
-        with mock.patch.object(self.mgr, 'destroy_device') as destroy:
-            with mock.patch.object(self.mgr, 'cache') as cache:
-                cache.get_by_pool_id.return_value = False
+    def test_create_member_failed(self):
+        member = {'id': 'id1', 'pool_id': '1'}
+        self.driver_mock.create_member.side_effect = Exception
+        self.mgr.create_member(mock.Mock(), member)
+        self.driver_mock.create_member.assert_called_once_with(member)
+        self.rpc_mock.update_status.assert_called_once_with('member',
+                                                            member['id'],
+                                                            constants.ERROR)
 
-                self.mgr.destroy_pool(mock.Mock(), pool_id='pool_id')
+    def test_update_member(self):
+        old_member = {'id': 'id1'}
+        member = {'id': 'id1', 'pool_id': '1'}
+        self.mgr.update_member(mock.Mock(), old_member, member)
+        self.driver_mock.update_member.assert_called_once_with(old_member,
+                                                               member)
+        self.rpc_mock.update_status.assert_called_once_with('member',
+                                                            member['id'],
+                                                            constants.ACTIVE)
 
-                self.assertFalse(destroy.called)
+    def test_update_member_failed(self):
+        old_member = {'id': 'id1'}
+        member = {'id': 'id1', 'pool_id': '1'}
+        self.driver_mock.update_member.side_effect = Exception
+        self.mgr.update_member(mock.Mock(), old_member, member)
+        self.driver_mock.update_member.assert_called_once_with(old_member,
+                                                               member)
+        self.rpc_mock.update_status.assert_called_once_with('member',
+                                                            member['id'],
+                                                            constants.ERROR)
+
+    def test_delete_member(self):
+        member = {'id': 'id1', 'pool_id': '1'}
+        self.mgr.delete_member(mock.Mock(), member)
+        self.driver_mock.delete_member.assert_called_once_with(member)
+
+    def test_create_monitor(self):
+        monitor = {'id': 'id1'}
+        assoc_id = {'monitor_id': monitor['id'], 'pool_id': '1'}
+        self.mgr.create_pool_health_monitor(mock.Mock(), monitor, '1')
+        self.driver_mock.create_pool_health_monitor.assert_called_once_with(
+            monitor, '1')
+        self.rpc_mock.update_status.assert_called_once_with('health_monitor',
+                                                            assoc_id,
+                                                            constants.ACTIVE)
+
+    def test_create_monitor_failed(self):
+        monitor = {'id': 'id1'}
+        assoc_id = {'monitor_id': monitor['id'], 'pool_id': '1'}
+        self.driver_mock.create_pool_health_monitor.side_effect = Exception
+        self.mgr.create_pool_health_monitor(mock.Mock(), monitor, '1')
+        self.driver_mock.create_pool_health_monitor.assert_called_once_with(
+            monitor, '1')
+        self.rpc_mock.update_status.assert_called_once_with('health_monitor',
+                                                            assoc_id,
+                                                            constants.ERROR)
+
+    def test_update_monitor(self):
+        monitor = {'id': 'id1'}
+        assoc_id = {'monitor_id': monitor['id'], 'pool_id': '1'}
+        self.mgr.update_pool_health_monitor(mock.Mock(), monitor, monitor, '1')
+        self.driver_mock.update_pool_health_monitor.assert_called_once_with(
+            monitor, monitor, '1')
+        self.rpc_mock.update_status.assert_called_once_with('health_monitor',
+                                                            assoc_id,
+                                                            constants.ACTIVE)
+
+    def test_update_monitor_failed(self):
+        monitor = {'id': 'id1'}
+        assoc_id = {'monitor_id': monitor['id'], 'pool_id': '1'}
+        self.driver_mock.update_pool_health_monitor.side_effect = Exception
+        self.mgr.update_pool_health_monitor(mock.Mock(), monitor, monitor, '1')
+        self.driver_mock.update_pool_health_monitor.assert_called_once_with(
+            monitor, monitor, '1')
+        self.rpc_mock.update_status.assert_called_once_with('health_monitor',
+                                                            assoc_id,
+                                                            constants.ERROR)
+
+    def test_delete_monitor(self):
+        monitor = {'id': 'id1'}
+        self.mgr.delete_pool_health_monitor(mock.Mock(), monitor, '1')
+        self.driver_mock.delete_pool_health_monitor.assert_called_once_with(
+            monitor, '1')
+
+    def test_agent_disabled(self):
+        payload = {'admin_state_up': False}
+        self.mgr.agent_updated(mock.Mock(), payload)
+        self.driver_mock.undeploy_instance.assert_has_calls(
+            [mock.call('1'), mock.call('2')])

neutron/tests/unit/services/loadbalancer/drivers/haproxy/test_api.py

@@ -58,8 +58,7 @@ class TestApiCache(base.BaseTestCase):
 
         self.make_msg.assert_called_once_with(
             'get_logical_device',
-            pool_id='pool_id',
-            host='host')
+            pool_id='pool_id')
 
         self.mock_call.assert_called_once_with(
             mock.sentinel.context,
@@ -75,8 +74,41 @@ class TestApiCache(base.BaseTestCase):
 
         self.make_msg.assert_called_once_with(
             'pool_destroyed',
-            pool_id='pool_id',
-            host='host')
+            pool_id='pool_id')
+
+        self.mock_call.assert_called_once_with(
+            mock.sentinel.context,
+            self.make_msg.return_value,
+            topic='topic'
+        )
+
+    def test_pool_deployed(self):
+        self.assertEqual(
+            self.api.pool_deployed('pool_id'),
+            self.mock_call.return_value
+        )
+
+        self.make_msg.assert_called_once_with(
+            'pool_deployed',
+            pool_id='pool_id')
+
+        self.mock_call.assert_called_once_with(
+            mock.sentinel.context,
+            self.make_msg.return_value,
+            topic='topic'
+        )
+
+    def test_update_status(self):
+        self.assertEqual(
+            self.api.update_status('pool', 'pool_id', 'ACTIVE'),
+            self.mock_call.return_value
+        )
+
+        self.make_msg.assert_called_once_with(
+            'update_status',
+            obj_type='pool',
+            obj_id='pool_id',
+            status='ACTIVE')
 
         self.mock_call.assert_called_once_with(
             mock.sentinel.context,

neutron/tests/unit/services/loadbalancer/drivers/haproxy/test_cfg.py

@@ -18,9 +18,8 @@
 # @author: Oleg Bondarev (obondarev@mirantis.com)
 
 import contextlib
-import mock
 
-from oslo.config import cfg as config
+import mock
 
 from neutron.services.loadbalancer.drivers.haproxy import cfg
 from neutron.tests import base
@@ -50,9 +49,6 @@ class TestHaproxyCfg(base.BaseTestCase):
                                             '\n'.join(test_config))
 
     def test_build_global(self):
-        if not hasattr(config.CONF, 'user_group'):
-            config.CONF.register_opt(config.StrOpt('user_group'))
-        config.CONF.set_override('user_group', 'test_group')
         expected_opts = ['global',
                          '\tdaemon',
                          '\tuser nobody',
@@ -60,9 +56,8 @@ class TestHaproxyCfg(base.BaseTestCase):
                          '\tlog /dev/log local0',
                          '\tlog /dev/log local1 notice',
                          '\tstats socket test_path mode 0666 level user']
-        opts = cfg._build_global(mock.Mock(), 'test_path')
+        opts = cfg._build_global(mock.Mock(), 'test_path', 'test_group')
         self.assertEqual(expected_opts, list(opts))
-        config.CONF.reset()
 
     def test_build_defaults(self):
         expected_opts = ['defaults',
@@ -74,7 +69,6 @@ class TestHaproxyCfg(base.BaseTestCase):
                          '\ttimeout server 50000']
         opts = cfg._build_defaults(mock.Mock())
         self.assertEqual(expected_opts, list(opts))
-        config.CONF.reset()
 
     def test_build_frontend(self):
         test_config = {'vip': {'id': 'vip_id',

neutron/tests/unit/services/loadbalancer/drivers/haproxy/test_namespace_driver.py

@@ -17,6 +17,7 @@
 # @author: Mark McClain, DreamHost
 
 import contextlib
+
 import mock
 
 from neutron.common import exceptions
@@ -29,22 +30,33 @@ from neutron.tests import base
 class TestHaproxyNSDriver(base.BaseTestCase):
     def setUp(self):
         super(TestHaproxyNSDriver, self).setUp()
+        self.addCleanup(mock.patch.stopall)
 
-        self.vif_driver = mock.Mock()
-        self.vip_plug_callback = mock.Mock()
+        conf = mock.Mock()
+        conf.haproxy.loadbalancer_state_path = '/the/path'
+        conf.interface_driver = 'intdriver'
+        conf.haproxy.user_group = 'test_group'
+        conf.AGENT.root_helper = 'sudo_test'
+        self.mock_importer = mock.patch.object(namespace_driver,
+                                               'importutils').start()
 
+        self.rpc_mock = mock.Mock()
         self.driver = namespace_driver.HaproxyNSDriver(
-            'sudo',
-            '/the/path',
-            self.vif_driver,
-            self.vip_plug_callback
+            conf,
+            self.rpc_mock
         )
+        self.vif_driver = mock.Mock()
+        self.driver.vif_driver = self.vif_driver
 
         self.fake_config = {
             'pool': {'id': 'pool_id'},
-            'vip': {'id': 'vip_id', 'port': {'id': 'port_id'}}
+            'vip': {'id': 'vip_id', 'port': {'id': 'port_id'},
+                    'status': 'ACTIVE', 'admin_state_up': True}
         }
 
+    def test_get_name(self):
+        self.assertEqual(self.driver.get_name(), namespace_driver.DRIVER_NAME)
+
     def test_create(self):
         with mock.patch.object(self.driver, '_plug') as plug:
             with mock.patch.object(self.driver, '_spawn') as spawn:
@@ -78,14 +90,15 @@ class TestHaproxyNSDriver(base.BaseTestCase):
 
             self.driver._spawn(self.fake_config)
 
-            mock_save.assert_called_once_with('conf', self.fake_config, 'sock')
+            mock_save.assert_called_once_with('conf', self.fake_config,
+                                              'sock', 'test_group')
             cmd = ['haproxy', '-f', 'conf', '-p', 'pid']
             ip_wrap.assert_has_calls([
-                mock.call('sudo', 'qlbaas-pool_id'),
+                mock.call('sudo_test', 'qlbaas-pool_id'),
                 mock.call().netns.execute(cmd)
             ])
 
-    def test_destroy(self):
+    def test_undeploy_instance(self):
         with contextlib.nested(
             mock.patch.object(self.driver, '_get_state_file_path'),
             mock.patch.object(namespace_driver, 'kill_pids_in_file'),
@@ -99,14 +112,14 @@ class TestHaproxyNSDriver(base.BaseTestCase):
             self.driver.pool_to_port_id['pool_id'] = 'port_id'
             isdir.return_value = True
 
-            self.driver.destroy('pool_id')
+            self.driver.undeploy_instance('pool_id')
 
-            kill.assert_called_once_with('sudo', '/pool/pid')
+            kill.assert_called_once_with('sudo_test', '/pool/pid')
             unplug.assert_called_once_with('qlbaas-pool_id', 'port_id')
-            isdir.called_once_with('/pool')
+            isdir.assert_called_once_with('/pool')
             rmtree.assert_called_once_with('/pool')
             ip_wrap.assert_has_calls([
-                mock.call('sudo', 'qlbaas-pool_id'),
+                mock.call('sudo_test', 'qlbaas-pool_id'),
                 mock.call().garbage_collect_namespace()
             ])
 
@@ -125,7 +138,7 @@ class TestHaproxyNSDriver(base.BaseTestCase):
             self.driver.exists('pool_id')
 
             ip_wrap.assert_has_calls([
-                mock.call('sudo'),
+                mock.call('sudo_test'),
                 mock.call().netns.exists('qlbaas-pool_id')
             ])
 
@@ -220,7 +233,8 @@ class TestHaproxyNSDriver(base.BaseTestCase):
             ip_net.prefixlen = 24
 
             self.driver._plug('test_ns', test_port)
-            self.vip_plug_callback.assert_called_once_with('plug', test_port)
+            self.rpc_mock.plug_vip_port.assert_called_once_with(
+                test_port['id'])
             self.assertTrue(dev_exists.called)
             self.vif_driver.plug.assert_called_once_with('net_id', 'port_id',
                                                          'test_interface',
@@ -232,7 +246,7 @@ class TestHaproxyNSDriver(base.BaseTestCase):
                                                             'test_ns')
             cmd = ['route', 'add', 'default', 'gw', '10.0.0.1']
             ip_wrap.assert_has_calls([
-                mock.call('sudo', namespace='test_ns'),
+                mock.call('sudo_test', namespace='test_ns'),
                 mock.call().netns.execute(cmd, check_exit_code=False),
             ])
 
@@ -257,7 +271,8 @@ class TestHaproxyNSDriver(base.BaseTestCase):
             ip_net.prefixlen = 24
 
             self.driver._plug('test_ns', test_port)
-            self.vip_plug_callback.assert_called_once_with('plug', test_port)
+            self.rpc_mock.plug_vip_port.assert_called_once_with(
+                test_port['id'])
             self.assertTrue(dev_exists.called)
             self.vif_driver.plug.assert_called_once_with('net_id', 'port_id',
                                                          'test_interface',
@@ -276,8 +291,7 @@ class TestHaproxyNSDriver(base.BaseTestCase):
         self.vif_driver.get_device_name.return_value = 'test_interface'
 
         self.driver._unplug('test_ns', 'port_id')
-        self.vip_plug_callback.assert_called_once_with('unplug',
-                                                       {'id': 'port_id'})
+        self.rpc_mock.unplug_vip_port.assert_called_once_with('port_id')
         self.vif_driver.unplug('test_interface', namespace='test_ns')
 
     def test_kill_pids_in_file(self):
@@ -293,20 +307,130 @@ class TestHaproxyNSDriver(base.BaseTestCase):
             file_mock.__iter__.return_value = iter(['123'])
 
             path_exists.return_value = False
-            namespace_driver.kill_pids_in_file('sudo', 'test_path')
+            namespace_driver.kill_pids_in_file('sudo_test', 'test_path')
             path_exists.assert_called_once_with('test_path')
             self.assertFalse(mock_open.called)
             self.assertFalse(mock_execute.called)
 
             path_exists.return_value = True
             mock_execute.side_effect = RuntimeError
-            namespace_driver.kill_pids_in_file('sudo', 'test_path')
+            namespace_driver.kill_pids_in_file('sudo_test', 'test_path')
             self.assertTrue(mock_log.called)
             mock_execute.assert_called_once_with(
-                ['kill', '-9', '123'], 'sudo')
+                ['kill', '-9', '123'], 'sudo_test')
 
     def test_get_state_file_path(self):
         with mock.patch('os.makedirs') as mkdir:
             path = self.driver._get_state_file_path('pool_id', 'conf')
             self.assertEqual('/the/path/pool_id/conf', path)
             mkdir.assert_called_once_with('/the/path/pool_id', 0o755)
+
+    def test_deploy_instance(self):
+        with mock.patch.object(self.driver, 'exists') as exists:
+            with mock.patch.object(self.driver, 'update') as update:
+                self.driver.deploy_instance(self.fake_config)
+                exists.assert_called_once_with(self.fake_config['pool']['id'])
+                update.assert_called_once_with(self.fake_config)
+
+    def test_deploy_instance_non_existing(self):
+        with mock.patch.object(self.driver, 'exists') as exists:
+            with mock.patch.object(self.driver, 'create') as create:
+                exists.return_value = False
+                self.driver.deploy_instance(self.fake_config)
+                exists.assert_called_once_with(self.fake_config['pool']['id'])
+                create.assert_called_once_with(self.fake_config)
+
+    def test_deploy_instance_vip_status_non_active(self):
+        with mock.patch.object(self.driver, 'exists') as exists:
+            self.fake_config['vip']['status'] = 'NON_ACTIVE'
+            self.driver.deploy_instance(self.fake_config)
+            self.assertFalse(exists.called)
+
+    def test_deploy_instance_vip_admin_state_down(self):
+        with mock.patch.object(self.driver, 'exists') as exists:
+            self.fake_config['vip']['admin_state_up'] = False
+            self.driver.deploy_instance(self.fake_config)
+            self.assertFalse(exists.called)
+
+    def test_deploy_instance_no_vip(self):
+        with mock.patch.object(self.driver, 'exists') as exists:
+            del self.fake_config['vip']
+            self.driver.deploy_instance(self.fake_config)
+            self.assertFalse(exists.called)
+
+    def test_refresh_device(self):
+        with mock.patch.object(self.driver, 'deploy_instance') as deploy:
+            pool_id = 'pool_id1'
+            self.driver._refresh_device(pool_id)
+            self.rpc_mock.get_logical_device.assert_called_once_with(pool_id)
+            deploy.assert_called_once_with(
+                self.rpc_mock.get_logical_device.return_value)
+
+    def test_create_vip(self):
+        with mock.patch.object(self.driver, '_refresh_device') as refresh:
+            self.driver.create_vip({'pool_id': '1'})
+            refresh.assert_called_once_with('1')
+
+    def test_update_vip(self):
+        with mock.patch.object(self.driver, '_refresh_device') as refresh:
+            self.driver.update_vip({}, {'pool_id': '1'})
+            refresh.assert_called_once_with('1')
+
+    def test_delete_vip(self):
+        with mock.patch.object(self.driver, 'undeploy_instance') as undeploy:
+            self.driver.delete_vip({'pool_id': '1'})
+            undeploy.assert_called_once_with('1')
+
+    def test_create_pool(self):
+        with mock.patch.object(self.driver, '_refresh_device') as refresh:
+            self.driver.create_pool({'id': '1'})
+            self.assertFalse(refresh.called)
+
+    def test_update_pool(self):
+        with mock.patch.object(self.driver, '_refresh_device') as refresh:
+            self.driver.update_pool({}, {'id': '1'})
+            refresh.assert_called_once_with('1')
+
+    def test_delete_pool_existing(self):
+        with mock.patch.object(self.driver, 'undeploy_instance') as undeploy:
+            with mock.patch.object(self.driver, 'exists') as exists:
+                exists.return_value = True
+                self.driver.delete_pool({'id': '1'})
+                undeploy.assert_called_once_with('1')
+
+    def test_delete_pool_non_existing(self):
+        with mock.patch.object(self.driver, 'undeploy_instance') as undeploy:
+            with mock.patch.object(self.driver, 'exists') as exists:
+                exists.return_value = False
+                self.driver.delete_pool({'id': '1'})
+                self.assertFalse(undeploy.called)
+
+    def test_create_member(self):
+        with mock.patch.object(self.driver, '_refresh_device') as refresh:
+            self.driver.create_member({'pool_id': '1'})
+            refresh.assert_called_once_with('1')
+
+    def test_update_member(self):
+        with mock.patch.object(self.driver, '_refresh_device') as refresh:
+            self.driver.update_member({}, {'pool_id': '1'})
+            refresh.assert_called_once_with('1')
+
+    def test_delete_member(self):
+        with mock.patch.object(self.driver, '_refresh_device') as refresh:
+            self.driver.delete_member({'pool_id': '1'})
+            refresh.assert_called_once_with('1')
+
+    def test_create_pool_health_monitor(self):
+        with mock.patch.object(self.driver, '_refresh_device') as refresh:
+            self.driver.create_pool_health_monitor('', '1')
+            refresh.assert_called_once_with('1')
+
+    def test_update_pool_health_monitor(self):
+        with mock.patch.object(self.driver, '_refresh_device') as refresh:
+            self.driver.update_pool_health_monitor('', '', '1')
+            refresh.assert_called_once_with('1')
+
+    def test_delete_pool_health_monitor(self):
+        with mock.patch.object(self.driver, '_refresh_device') as refresh:
+            self.driver.delete_pool_health_monitor('', '1')
+            refresh.assert_called_once_with('1')

neutron/tests/unit/services/loadbalancer/drivers/haproxy/test_plugin_driver.py

@@ -16,6 +16,8 @@
 #
 # @author: Mark McClain, DreamHost
 
+import contextlib
+
 import mock
 from webob import exc
 
@@ -39,14 +41,21 @@ class TestLoadBalancerPluginBase(
     test_db_loadbalancer.LoadBalancerPluginDbTestCase):
 
     def setUp(self):
+        def reset_device_driver():
+            plugin_driver.AgentBasedPluginDriver.device_driver = None
+        self.addCleanup(reset_device_driver)
+
+        self.mock_importer = mock.patch.object(
+            plugin_driver, 'importutils').start()
+        self.addCleanup(mock.patch.stopall)
+
         # needed to reload provider configuration
         st_db.ServiceTypeManager._instance = None
+        plugin_driver.AgentBasedPluginDriver.device_driver = 'dummy'
         super(TestLoadBalancerPluginBase, self).setUp(
             lbaas_provider=('LOADBALANCER:lbaas:neutron.services.'
                             'loadbalancer.drivers.haproxy.plugin_driver.'
-                            'HaproxyOnHostPluginDriver:default'))
-        # create another API instance to make testing easier
-        # pass a mock to our API instance
+                            'AgentBasedPluginDriver:default'))
 
         # we need access to loaded plugins to modify models
         loaded_plugins = manager.NeutronManager().get_service_plugins()
@@ -66,12 +75,6 @@ class TestLoadBalancerCallbacks(TestLoadBalancerPluginBase):
             '.LbaasAgentSchedulerDbMixin.get_lbaas_agents')
         get_lbaas_agents_patcher.start()
 
-        # mocking plugin_driver create_pool() as it does nothing more than
-        # pool scheduling which is beyond the scope of this test case
-        mock.patch('neutron.services.loadbalancer.drivers.haproxy'
-                   '.plugin_driver.HaproxyOnHostPluginDriver'
-                   '.create_pool').start()
-
         self.addCleanup(mock.patch.stopall)
 
     def test_get_ready_devices(self):
@@ -132,10 +135,10 @@ class TestLoadBalancerCallbacks(TestLoadBalancerPluginBase):
                                                        {'id': pools[1].id},
                                                        {'id': pools[2].id}]}
             ready = self.callbacks.get_ready_devices(ctx)
-            self.assertEqual(len(ready), 2)
+            self.assertEqual(len(ready), 3)
             self.assertIn(pools[0].id, ready)
             self.assertIn(pools[1].id, ready)
-            self.assertNotIn(pools[2].id, ready)
+            self.assertIn(pools[2].id, ready)
         # cleanup
         ctx.session.query(ldb.Pool).delete()
         ctx.session.query(ldb.Vip).delete()
@@ -158,7 +161,7 @@ class TestLoadBalancerCallbacks(TestLoadBalancerPluginBase):
                 ready = self.callbacks.get_ready_devices(
                     context.get_admin_context(),
                 )
-                self.assertFalse(ready)
+                self.assertEqual([vip['vip']['pool_id']], ready)
 
     def test_get_ready_devices_inactive_pool(self):
         with self.vip() as vip:
@@ -188,15 +191,20 @@ class TestLoadBalancerCallbacks(TestLoadBalancerPluginBase):
                         exceptions.Invalid,
                         self.callbacks.get_logical_device,
                         context.get_admin_context(),
-                        pool['pool']['id'],
-                        activate=False
-                    )
+                        pool['pool']['id'])
 
-    def test_get_logical_device_activate(self):
+    def test_get_logical_device_active(self):
         with self.pool() as pool:
             with self.vip(pool=pool) as vip:
                 with self.member(pool_id=vip['vip']['pool_id']) as member:
                     ctx = context.get_admin_context()
+                    # activate objects
+                    self.plugin_instance.update_status(
+                        ctx, ldb.Pool, pool['pool']['id'], 'ACTIVE')
+                    self.plugin_instance.update_status(
+                        ctx, ldb.Member, member['member']['id'], 'ACTIVE')
+                    self.plugin_instance.update_status(
+                        ctx, ldb.Vip, vip['vip']['id'], 'ACTIVE')
 
                     # build the expected
                     port = self.plugin_instance._core_plugin.get_port(
@@ -221,11 +229,12 @@ class TestLoadBalancerCallbacks(TestLoadBalancerPluginBase):
                         'pool': pool,
                         'vip': vip['vip'],
                         'members': [member['member']],
-                        'healthmonitors': []
+                        'healthmonitors': [],
+                        'driver': 'dummy'
                     }
 
                     logical_config = self.callbacks.get_logical_device(
-                        ctx, pool['id'], activate=True
+                        ctx, pool['id']
                     )
 
                     self.assertEqual(logical_config, expected)
@@ -246,7 +255,7 @@ class TestLoadBalancerCallbacks(TestLoadBalancerPluginBase):
                                                        'INACTIVE')
 
                     logical_config = self.callbacks.get_logical_device(
-                        ctx, pool['pool']['id'], activate=False)
+                        ctx, pool['pool']['id'])
 
                     member['member']['status'] = constants.INACTIVE
                     self.assertEqual([member['member']],
@@ -308,6 +317,58 @@ class TestLoadBalancerCallbacks(TestLoadBalancerPluginBase):
             host='host'
         )
 
+    def test_pool_deployed(self):
+        with self.pool() as pool:
+            with self.vip(pool=pool) as vip:
+                with self.member(pool_id=vip['vip']['pool_id']) as member:
+                    ctx = context.get_admin_context()
+                    p = self.plugin_instance.get_pool(ctx, pool['pool']['id'])
+                    self.assertEqual('PENDING_CREATE', p['status'])
+                    v = self.plugin_instance.get_vip(ctx, vip['vip']['id'])
+                    self.assertEqual('PENDING_CREATE', v['status'])
+                    m = self.plugin_instance.get_member(
+                        ctx, member['member']['id'])
+                    self.assertEqual('PENDING_CREATE', m['status'])
+
+                    self.callbacks.pool_deployed(ctx, pool['pool']['id'])
+
+                    p = self.plugin_instance.get_pool(ctx, pool['pool']['id'])
+                    self.assertEqual('ACTIVE', p['status'])
+                    v = self.plugin_instance.get_vip(ctx, vip['vip']['id'])
+                    self.assertEqual('ACTIVE', v['status'])
+                    m = self.plugin_instance.get_member(
+                        ctx, member['member']['id'])
+                    self.assertEqual('ACTIVE', m['status'])
+
+    def test_update_status_pool(self):
+        with self.pool() as pool:
+            pool_id = pool['pool']['id']
+            ctx = context.get_admin_context()
+            p = self.plugin_instance.get_pool(ctx, pool_id)
+            self.assertEqual('PENDING_CREATE', p['status'])
+            self.callbacks.update_status(ctx, 'pool', pool_id, 'ACTIVE')
+            p = self.plugin_instance.get_pool(ctx, pool_id)
+            self.assertEqual('ACTIVE', p['status'])
+
+    def test_update_status_health_monitor(self):
+        with contextlib.nested(
+            self.pool(),
+            self.health_monitor()
+        ) as (pool, hm):
+            pool_id = pool['pool']['id']
+            ctx = context.get_admin_context()
+            self.plugin_instance.create_pool_health_monitor(ctx, hm, pool_id)
+            hm_id = hm['health_monitor']['id']
+            h = self.plugin_instance.get_pool_health_monitor(ctx, hm_id,
+                                                             pool_id)
+            self.assertEqual('PENDING_CREATE', h['status'])
+            self.callbacks.update_status(
+                ctx, 'health_monitor',
+                {'monitor_id': hm_id, 'pool_id': pool_id}, 'ACTIVE')
+            h = self.plugin_instance.get_pool_health_monitor(ctx, hm_id,
+                                                             pool_id)
+            self.assertEqual('ACTIVE', h['status'])
+
 
 class TestLoadBalancerAgentApi(base.BaseTestCase):
     def setUp(self):
@@ -321,46 +382,73 @@ class TestLoadBalancerAgentApi(base.BaseTestCase):
     def test_init(self):
         self.assertEqual(self.api.topic, 'topic')
 
-    def _call_test_helper(self, method_name):
-        rv = getattr(self.api, method_name)(mock.sentinel.context, 'test',
-                                            'host')
-        self.assertEqual(rv, self.mock_cast.return_value)
-        self.mock_cast.assert_called_once_with(
-            mock.sentinel.context,
-            self.mock_msg.return_value,
-            topic='topic.host'
-        )
-
-        self.mock_msg.assert_called_once_with(
-            method_name,
-            pool_id='test',
-            host='host'
-        )
-
-    def test_reload_pool(self):
-        self._call_test_helper('reload_pool')
-
-    def test_destroy_pool(self):
-        self._call_test_helper('destroy_pool')
-
-    def test_modify_pool(self):
-        self._call_test_helper('modify_pool')
-
-    def test_agent_updated(self):
-        rv = self.api.agent_updated(mock.sentinel.context, True, 'host')
+    def _call_test_helper(self, method_name, method_args):
+        rv = getattr(self.api, method_name)(mock.sentinel.context,
+                                            host='host',
+                                            **method_args)
         self.assertEqual(rv, self.mock_cast.return_value)
         self.mock_cast.assert_called_once_with(
             mock.sentinel.context,
             self.mock_msg.return_value,
             topic='topic.host',
-            version='1.1'
+            version=None
         )
 
+        if method_name == 'agent_updated':
+            method_args = {'payload': method_args}
         self.mock_msg.assert_called_once_with(
-            'agent_updated',
-            payload={'admin_state_up': True}
+            method_name,
+            **method_args
         )
 
+    def test_agent_updated(self):
+        self._call_test_helper('agent_updated', {'admin_state_up': 'test'})
+
+    def test_create_pool(self):
+        self._call_test_helper('create_pool', {'pool': 'test',
+                                               'driver_name': 'dummy'})
+
+    def test_update_pool(self):
+        self._call_test_helper('update_pool', {'old_pool': 'test',
+                                               'pool': 'test'})
+
+    def test_delete_pool(self):
+        self._call_test_helper('delete_pool', {'pool': 'test'})
+
+    def test_create_vip(self):
+        self._call_test_helper('create_vip', {'vip': 'test'})
+
+    def test_update_vip(self):
+        self._call_test_helper('update_vip', {'old_vip': 'test',
+                                              'vip': 'test'})
+
+    def test_delete_vip(self):
+        self._call_test_helper('delete_vip', {'vip': 'test'})
+
+    def test_create_member(self):
+        self._call_test_helper('create_member', {'member': 'test'})
+
+    def test_update_member(self):
+        self._call_test_helper('update_member', {'old_member': 'test',
+                                                 'member': 'test'})
+
+    def test_delete_member(self):
+        self._call_test_helper('delete_member', {'member': 'test'})
+
+    def test_create_monitor(self):
+        self._call_test_helper('create_pool_health_monitor',
+                               {'health_monitor': 'test', 'pool_id': 'test'})
+
+    def test_update_monitor(self):
+        self._call_test_helper('update_pool_health_monitor',
+                               {'old_health_monitor': 'test',
+                                'health_monitor': 'test',
+                                'pool_id': 'test'})
+
+    def test_delete_monitor(self):
+        self._call_test_helper('delete_pool_health_monitor',
+                               {'health_monitor': 'test', 'pool_id': 'test'})
+
 
 class TestLoadBalancerPluginNotificationWrapper(TestLoadBalancerPluginBase):
     def setUp(self):
@@ -370,16 +458,10 @@ class TestLoadBalancerPluginNotificationWrapper(TestLoadBalancerPluginBase):
         super(TestLoadBalancerPluginNotificationWrapper, self).setUp()
         self.mock_api = api_cls.return_value
 
-        # mocking plugin_driver create_pool() as it does nothing more than
-        # pool scheduling which is beyond the scope of this test case
-        mock.patch('neutron.services.loadbalancer.drivers.haproxy'
-                   '.plugin_driver.HaproxyOnHostPluginDriver'
-                   '.create_pool').start()
-
         self.mock_get_driver = mock.patch.object(self.plugin_instance,
                                                  '_get_driver')
         self.mock_get_driver.return_value = (plugin_driver.
-                                             HaproxyOnHostPluginDriver(
+                                             AgentBasedPluginDriver(
                                                  self.plugin_instance
                                              ))
 
@@ -389,9 +471,9 @@ class TestLoadBalancerPluginNotificationWrapper(TestLoadBalancerPluginBase):
         with self.subnet() as subnet:
             with self.pool(subnet=subnet) as pool:
                 with self.vip(pool=pool, subnet=subnet) as vip:
-                    self.mock_api.reload_pool.assert_called_once_with(
+                    self.mock_api.create_vip.assert_called_once_with(
                         mock.ANY,
-                        vip['vip']['pool_id'],
+                        vip['vip'],
                         'host'
                     )
 
@@ -399,8 +481,8 @@ class TestLoadBalancerPluginNotificationWrapper(TestLoadBalancerPluginBase):
         with self.subnet() as subnet:
             with self.pool(subnet=subnet) as pool:
                 with self.vip(pool=pool, subnet=subnet) as vip:
-                    self.mock_api.reset_mock()
                     ctx = context.get_admin_context()
+                    old_vip = vip['vip'].copy()
                     vip['vip'].pop('status')
                     new_vip = self.plugin_instance.update_vip(
                         ctx,
@@ -408,9 +490,10 @@ class TestLoadBalancerPluginNotificationWrapper(TestLoadBalancerPluginBase):
                         vip
                     )
 
-                    self.mock_api.reload_pool.assert_called_once_with(
+                    self.mock_api.update_vip.assert_called_once_with(
                         mock.ANY,
-                        vip['vip']['pool_id'],
+                        old_vip,
+                        new_vip,
                         'host'
                     )
 
@@ -423,51 +506,55 @@ class TestLoadBalancerPluginNotificationWrapper(TestLoadBalancerPluginBase):
         with self.subnet() as subnet:
             with self.pool(subnet=subnet) as pool:
                 with self.vip(pool=pool, subnet=subnet, no_delete=True) as vip:
-                    self.mock_api.reset_mock()
                     ctx = context.get_admin_context()
                     self.plugin_instance.delete_vip(ctx, vip['vip']['id'])
-                    self.mock_api.destroy_pool.assert_called_once_with(
+                    vip['vip']['status'] = 'PENDING_DELETE'
+                    self.mock_api.delete_vip.assert_called_once_with(
                         mock.ANY,
-                        vip['vip']['pool_id'],
+                        vip['vip'],
                         'host'
                     )
 
     def test_create_pool(self):
-        with self.pool():
-            self.assertFalse(self.mock_api.reload_pool.called)
-            self.assertFalse(self.mock_api.modify_pool.called)
-            self.assertFalse(self.mock_api.destroy_pool.called)
+        with self.pool() as pool:
+            self.mock_api.create_pool.assert_called_once_with(
+                mock.ANY,
+                pool['pool'],
+                mock.ANY,
+                'dummy'
+            )
 
     def test_update_pool_non_active(self):
         with self.pool() as pool:
             pool['pool']['status'] = 'INACTIVE'
             ctx = context.get_admin_context()
+            orig_pool = pool['pool'].copy()
             del pool['pool']['provider']
             self.plugin_instance.update_pool(ctx, pool['pool']['id'], pool)
-            self.mock_api.destroy_pool.assert_called_once_with(
-                mock.ANY, pool['pool']['id'], 'host')
-            self.assertFalse(self.mock_api.reload_pool.called)
-            self.assertFalse(self.mock_api.modify_pool.called)
+            self.mock_api.delete_pool.assert_called_once_with(
+                mock.ANY, orig_pool, 'host')
 
     def test_update_pool_no_vip_id(self):
         with self.pool() as pool:
             ctx = context.get_admin_context()
+            orig_pool = pool['pool'].copy()
             del pool['pool']['provider']
-            self.plugin_instance.update_pool(ctx, pool['pool']['id'], pool)
-            self.assertFalse(self.mock_api.destroy_pool.called)
-            self.assertFalse(self.mock_api.reload_pool.called)
-            self.assertFalse(self.mock_api.modify_pool.called)
+            updated = self.plugin_instance.update_pool(
+                ctx, pool['pool']['id'], pool)
+            self.mock_api.update_pool.assert_called_once_with(
+                mock.ANY, orig_pool, updated, 'host')
 
     def test_update_pool_with_vip_id(self):
         with self.pool() as pool:
-            with self.vip(pool=pool):
+            with self.vip(pool=pool) as vip:
                 ctx = context.get_admin_context()
+                old_pool = pool['pool'].copy()
+                old_pool['vip_id'] = vip['vip']['id']
                 del pool['pool']['provider']
-                self.plugin_instance.update_pool(ctx, pool['pool']['id'], pool)
-                self.mock_api.reload_pool.assert_called_once_with(
-                    mock.ANY, pool['pool']['id'], 'host')
-                self.assertFalse(self.mock_api.destroy_pool.called)
-                self.assertFalse(self.mock_api.modify_pool.called)
+                updated = self.plugin_instance.update_pool(
+                    ctx, pool['pool']['id'], pool)
+                self.mock_api.update_pool.assert_called_once_with(
+                    mock.ANY, old_pool, updated, 'host')
 
     def test_delete_pool(self):
         with self.pool(no_delete=True) as pool:
@@ -475,26 +562,26 @@ class TestLoadBalancerPluginNotificationWrapper(TestLoadBalancerPluginBase):
                                           pool['pool']['id'])
             res = req.get_response(self.ext_api)
             self.assertEqual(res.status_int, exc.HTTPNoContent.code)
-            self.mock_api.destroy_pool.assert_called_once_with(
-                mock.ANY, pool['pool']['id'], 'host')
+            pool['pool']['status'] = 'PENDING_DELETE'
+            self.mock_api.delete_pool.assert_called_once_with(
+                mock.ANY, pool['pool'], 'host')
 
     def test_create_member(self):
         with self.pool() as pool:
             pool_id = pool['pool']['id']
-            with self.member(pool_id=pool_id):
-                self.mock_api.modify_pool.assert_called_once_with(
-                    mock.ANY, pool_id, 'host')
+            with self.member(pool_id=pool_id) as member:
+                self.mock_api.create_member.assert_called_once_with(
+                    mock.ANY, member['member'], 'host')
 
     def test_update_member(self):
         with self.pool() as pool:
             pool_id = pool['pool']['id']
             with self.member(pool_id=pool_id) as member:
                 ctx = context.get_admin_context()
-                self.mock_api.modify_pool.reset_mock()
-                self.plugin_instance.update_member(
+                updated = self.plugin_instance.update_member(
                     ctx, member['member']['id'], member)
-                self.mock_api.modify_pool.assert_called_once_with(
-                    mock.ANY, pool_id, 'host')
+                self.mock_api.update_member.assert_called_once_with(
+                    mock.ANY, member['member'], updated, 'host')
 
     def test_update_member_new_pool(self):
         with self.pool() as pool1:
@@ -502,58 +589,66 @@ class TestLoadBalancerPluginNotificationWrapper(TestLoadBalancerPluginBase):
             with self.pool() as pool2:
                 pool2_id = pool2['pool']['id']
                 with self.member(pool_id=pool1_id) as member:
+                    self.mock_api.create_member.reset_mock()
                     ctx = context.get_admin_context()
-                    self.mock_api.modify_pool.reset_mock()
+                    old_member = member['member'].copy()
                     member['member']['pool_id'] = pool2_id
-                    self.plugin_instance.update_member(ctx,
-                                                       member['member']['id'],
-                                                       member)
-                    self.assertEqual(2, self.mock_api.modify_pool.call_count)
-                    self.mock_api.modify_pool.assert_has_calls(
-                        [mock.call(mock.ANY, pool1_id, 'host'),
-                         mock.call(mock.ANY, pool2_id, 'host')])
+                    updated = self.plugin_instance.update_member(
+                        ctx, member['member']['id'], member)
+                    self.mock_api.delete_member.assert_called_once_with(
+                        mock.ANY, old_member, 'host')
+                    self.mock_api.create_member.assert_called_once_with(
+                        mock.ANY, updated, 'host')
 
     def test_delete_member(self):
         with self.pool() as pool:
             pool_id = pool['pool']['id']
             with self.member(pool_id=pool_id,
                              no_delete=True) as member:
-                self.mock_api.modify_pool.reset_mock()
                 req = self.new_delete_request('members',
                                               member['member']['id'])
                 res = req.get_response(self.ext_api)
                 self.assertEqual(res.status_int, exc.HTTPNoContent.code)
-                self.mock_api.modify_pool.assert_called_once_with(
-                    mock.ANY, pool_id, 'host')
+                member['member']['status'] = 'PENDING_DELETE'
+                self.mock_api.delete_member.assert_called_once_with(
+                    mock.ANY, member['member'], 'host')
 
     def test_create_pool_health_monitor(self):
-        with self.pool() as pool:
+        with contextlib.nested(
+            self.pool(),
+            self.health_monitor()
+        ) as (pool, hm):
             pool_id = pool['pool']['id']
-            with self.health_monitor() as hm:
             ctx = context.get_admin_context()
-                self.plugin_instance.create_pool_health_monitor(ctx,
-                                                                hm,
-                                                                pool_id)
-                self.mock_api.modify_pool.assert_called_once_with(
-                    mock.ANY, pool_id, 'host')
+            self.plugin_instance.create_pool_health_monitor(ctx, hm, pool_id)
+            # hm now has a ref to the pool with which it is associated
+            hm = self.plugin.get_health_monitor(
+                ctx, hm['health_monitor']['id'])
+            self.mock_api.create_pool_health_monitor.assert_called_once_with(
+                mock.ANY, hm, pool_id, 'host')
 
     def test_delete_pool_health_monitor(self):
-        with self.pool() as pool:
+        with contextlib.nested(
+            self.pool(),
+            self.health_monitor()
+        ) as (pool, hm):
             pool_id = pool['pool']['id']
-            with self.health_monitor() as hm:
             ctx = context.get_admin_context()
-                self.plugin_instance.create_pool_health_monitor(ctx,
-                                                                hm,
-                                                                pool_id)
-                self.mock_api.modify_pool.reset_mock()
+            self.plugin_instance.create_pool_health_monitor(ctx, hm, pool_id)
+            # hm now has a ref to the pool with which it is associated
+            hm = self.plugin.get_health_monitor(
+                ctx, hm['health_monitor']['id'])
+            hm['pools'][0]['status'] = 'PENDING_DELETE'
             self.plugin_instance.delete_pool_health_monitor(
-                    ctx, hm['health_monitor']['id'], pool_id)
-                self.mock_api.modify_pool.assert_called_once_with(
-                    mock.ANY, pool_id, 'host')
+                ctx, hm['id'], pool_id)
+            self.mock_api.delete_pool_health_monitor.assert_called_once_with(
+                mock.ANY, hm, pool_id, 'host')
 
     def test_update_health_monitor_associated_with_pool(self):
-        with self.health_monitor(type='HTTP') as monitor:
-            with self.pool() as pool:
+        with contextlib.nested(
+            self.health_monitor(type='HTTP'),
+            self.pool()
+        ) as (monitor, pool):
             data = {
                 'health_monitor': {
                     'id': monitor['health_monitor']['id'],
@@ -568,8 +663,13 @@ class TestLoadBalancerPluginNotificationWrapper(TestLoadBalancerPluginBase):
                 subresource='health_monitors')
             res = req.get_response(self.ext_api)
             self.assertEqual(res.status_int, exc.HTTPCreated.code)
-                self.mock_api.modify_pool.assert_called_once_with(
+            # hm now has a ref to the pool with which it is associated
+            ctx = context.get_admin_context()
+            hm = self.plugin.get_health_monitor(
+                ctx, monitor['health_monitor']['id'])
+            self.mock_api.create_pool_health_monitor.assert_called_once_with(
                 mock.ANY,
+                hm,
                 pool['pool']['id'],
                 'host'
             )
@@ -579,12 +679,15 @@ class TestLoadBalancerPluginNotificationWrapper(TestLoadBalancerPluginBase):
                                        'timeout': 20,
                                        'max_retries': 2,
                                        'admin_state_up': False}}
+            updated = hm.copy()
+            updated.update(data['health_monitor'])
             req = self.new_update_request("health_monitors",
                                           data,
                                           monitor['health_monitor']['id'])
             req.get_response(self.ext_api)
-                self.mock_api.modify_pool.assert_called_once_with(
+            self.mock_api.update_pool_health_monitor.assert_called_once_with(
                 mock.ANY,
+                hm,
+                updated,
                 pool['pool']['id'],
-                    'host'
-                )
+                'host')

neutron/tests/unit/services/loadbalancer/test_agent_scheduler.py

@@ -21,7 +21,7 @@ from neutron.api import extensions
 from neutron.api.v2 import attributes
 from neutron.common import constants
 from neutron import context
-from neutron.db import servicetype_db as sdb
+from neutron.db import servicetype_db as st_db
 from neutron.extensions import agent
 from neutron.extensions import lbaas_agentscheduler
 from neutron import manager
@@ -79,8 +79,8 @@ class LBaaSAgentSchedulerTestCase(test_agent_ext_plugin.AgentDBTestMixIn,
               'HaproxyOnHostPluginDriver:default')],
             'service_providers')
 
-        #force service type manager to reload configuration:
-        sdb.ServiceTypeManager._instance = None
+        # need to reload provider configuration
+        st_db.ServiceTypeManager._instance = None
 
         super(LBaaSAgentSchedulerTestCase, self).setUp(
             self.plugin_str, service_plugins=service_plugins)
@@ -122,8 +122,7 @@ class LBaaSAgentSchedulerTestCase(test_agent_ext_plugin.AgentDBTestMixIn,
             'binary': 'neutron-loadbalancer-agent',
             'host': LBAAS_HOSTA,
             'topic': 'LOADBALANCER_AGENT',
-            'configurations': {'device_driver': 'device_driver',
-                               'interface_driver': 'interface_driver'},
+            'configurations': {'device_drivers': ['haproxy_ns']},
             'agent_type': constants.AGENT_TYPE_LOADBALANCER}
         self._register_one_agent_state(lbaas_hosta)
         with self.pool() as pool:
@@ -150,8 +149,7 @@ class LBaaSAgentSchedulerTestCase(test_agent_ext_plugin.AgentDBTestMixIn,
             'binary': 'neutron-loadbalancer-agent',
             'host': LBAAS_HOSTA,
             'topic': 'LOADBALANCER_AGENT',
-            'configurations': {'device_driver': 'device_driver',
-                               'interface_driver': 'interface_driver'},
+            'configurations': {'device_drivers': ['haproxy_ns']},
             'agent_type': constants.AGENT_TYPE_LOADBALANCER}
         self._register_one_agent_state(lbaas_hosta)
         is_agent_down_str = 'neutron.db.agents_db.AgentDbMixin.is_agent_down'

neutron/tests/unit/test_agent_ext_plugin.py

@@ -116,9 +116,7 @@ class AgentDBTestMixIn(object):
             'binary': 'neutron-loadbalancer-agent',
             'host': LBAAS_HOSTA,
             'topic': 'LOADBALANCER_AGENT',
-            'configurations': {'device_driver': 'device_driver',
-                               'interface_driver': 'interface_driver',
-                               },
+            'configurations': {'device_drivers': ['haproxy_ns']},
             'agent_type': constants.AGENT_TYPE_LOADBALANCER}
         lbaas_hostb = copy.deepcopy(lbaas_hosta)
         lbaas_hostb['host'] = LBAAS_HOSTB