--- /dev/null
+# Copyright (C) 2013 Nippon Telegraph and Telephone Corporation.
+# Copyright (C) 2013 Isaku Yamahata <yamahata at private email ne jp>
+#
+# 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.
+
+"""
+VRRP manager that manages VRRP router instances
+VRRPManager creates/deletes VRRPRouter, VRRPInterfaceMonitor
+dynamically as requested.
+
+Usage example
+PYTHONPATH=. ./bin/ryu-manager --verbose \
+ ryu.services.protocols.vrrp.manager \
+ ryu.services.protocols.vrrp.dumper
+"""
+
+import time
+
+from ryu.base import app_manager
+from ryu.controller import handler
+from ryu.lib import hub
+from ryu.services.protocols.vrrp import event as vrrp_event
+from ryu.services.protocols.vrrp import monitor as vrrp_monitor
+from ryu.services.protocols.vrrp import router as vrrp_router
+
+
+class VRRPInstance(object):
+ def __init__(self, name, monitor_name, config, interface):
+ super(VRRPInstance, self).__init__()
+ self.name = name # vrrp_router.name
+ self.monitor_name = monitor_name # interface_monitor.name
+ self.config = config
+ self.interface = interface
+ self.state = None
+
+ def state_changed(self, new_state):
+ self.state = new_state
+
+
+class VRRPManager(app_manager.RyuApp):
+ @staticmethod
+ def _instance_name(interface, vrid, is_ipv6):
+ ip_version = 'ipv6' if is_ipv6 else 'ipv4'
+ return 'VRRP-Router-%s-%d-%s' % (str(interface), vrid, ip_version)
+
+ def __init__(self, *args, **kwargs):
+ super(VRRPManager, self).__init__(*args, **kwargs)
+ self._args = args
+ self._kwargs = kwargs
+ self.name = vrrp_event.VRRP_MANAGER_NAME
+ self._instances = {} # name -> VRRPInstance
+ self.shutdown = hub.Queue()
+
+ def start(self):
+ t = hub.spawn(self._shutdown_loop)
+ super(VRRPManager, self).start()
+ return t
+
+ @handler.set_ev_cls(vrrp_event.EventVRRPConfigRequest)
+ def config_request_handler(self, ev):
+ config = ev.config
+ interface = ev.interface
+ name = self._instance_name(interface, config.vrid, config.is_ipv6)
+ if name in self._instances:
+ rep = vrrp_event.EventVRRPConfigReply(None, interface, config)
+ self.reply_to_request(ev, rep)
+ return
+
+ statistics = VRRPStatistics(name, config.resource_id,
+ config.statistics_interval)
+ monitor = vrrp_monitor.VRRPInterfaceMonitor.factory(
+ interface, config, name, statistics, *self._args, **self._kwargs)
+ router = vrrp_router.VRRPRouter.factory(name, monitor.name, interface,
+ config, statistics,
+ *self._args, **self._kwargs)
+ # Event piping
+ # vrrp_router -> vrrp_manager
+ # EventVRRPStateChanged to vrrp_manager is handled by framework
+ # vrrp_manager -> vrrp_rouer
+ self.register_observer(vrrp_event.EventVRRPShutdownRequest,
+ router.name)
+ # vrrp_router -> vrrp_monitor
+ router.register_observer(vrrp_event.EventVRRPStateChanged,
+ monitor.name)
+ router.register_observer(vrrp_event.EventVRRPTransmitRequest,
+ monitor.name)
+ # vrrp_interface_monitor -> vrrp_router
+ monitor.register_observer(vrrp_event.EventVRRPReceived, router.name)
+
+ instance = VRRPInstance(name, monitor.name, config, interface)
+ self._instances[name] = instance
+ # self.logger.debug('report_bricks')
+ # app_manager.AppManager.get_instance().report_bricks() # debug
+ monitor.start()
+ router.start()
+
+ rep = vrrp_event.EventVRRPConfigReply(instance.name, interface, config)
+ self.reply_to_request(ev, rep)
+
+ def _proxy_event(self, ev):
+ name = ev.instance_name
+ instance = self._instances.get(name, None)
+ if not instance:
+ self.logger.info('unknown vrrp router %s', name)
+ return
+ self.send_event(instance.name, ev)
+
+ @handler.set_ev_cls(vrrp_event.EventVRRPShutdownRequest)
+ def shutdown_request_handler(self, ev):
+ self._proxy_event(ev)
+
+ @handler.set_ev_cls(vrrp_event.EventVRRPConfigChangeRequest)
+ def config_change_request_handler(self, ev):
+ self._proxy_event(ev)
+
+ @handler.set_ev_cls(vrrp_event.EventVRRPStateChanged)
+ def state_change_handler(self, ev):
+ instance = self._instances.get(ev.instance_name, None)
+ assert instance is not None
+ instance.state_changed(ev.new_state)
+ if ev.old_state and ev.new_state == vrrp_event.VRRP_STATE_INITIALIZE:
+ self.shutdown.put(instance)
+
+ def _shutdown_loop(self):
+ app_mgr = app_manager.AppManager.get_instance()
+ while self.is_active or not self.shutdown.empty():
+ instance = self.shutdown.get()
+ app_mgr.uninstantiate(instance.name)
+ app_mgr.uninstantiate(instance.monitor_name)
+ del self._instances[instance.name]
+
+ @handler.set_ev_cls(vrrp_event.EventVRRPListRequest)
+ def list_request_handler(self, ev):
+ instance_name = ev.instance_name
+ if instance_name is None:
+ instance_list = [vrrp_event.VRRPInstance(
+ instance.name, instance.monitor_name,
+ instance.config, instance.interface, instance.state)
+ for instance in self._instances.values()]
+ else:
+ instance = self._instances.get(instance_name, None)
+ if instance is None:
+ instance_list = []
+ else:
+ instance_list = [vrrp_event.VRRPInstance(
+ instance_name, instance.monitor_name,
+ instance.config, instance.interface, instance.state)]
+
+ vrrp_list = vrrp_event.EventVRRPListReply(instance_list)
+ self.reply_to_request(ev, vrrp_list)
+
+
+class VRRPStatistics(object):
+ def __init__(self, name, resource_id, statistics_interval):
+ self.name = name
+ self.resource_id = resource_id
+ self.statistics_interval = statistics_interval
+ self.tx_vrrp_packets = 0
+ self.rx_vrrp_packets = 0
+ self.rx_vrrp_zero_prio_packets = 0
+ self.tx_vrrp_zero_prio_packets = 0
+ self.rx_vrrp_invalid_packets = 0
+ self.rx_vrrp_bad_auth = 0
+ self.idle_to_master_transitions = 0
+ self.idle_to_backup_transitions = 0
+ self.backup_to_master_transitions = 0
+ self.master_to_backup_transitions = 0
+
+ def get_stats(self):
+ ts = time.strftime("%Y-%m-%dT%H:%M:%S")
+ stats_dict = dict(
+ timestamp=ts,
+ resource_id=self.resource_id,
+ tx_vrrp_packets=self.tx_vrrp_packets,
+ rx_vrrp_packets=self.rx_vrrp_packets,
+ rx_vrrp_zero_prio_packets=self.rx_vrrp_zero_prio_packets,
+ tx_vrrp_zero_prio_packets=self.tx_vrrp_zero_prio_packets,
+ rx_vrrp_invalid_packets=self.rx_vrrp_invalid_packets,
+ rx_vrrp_bad_auth=self.rx_vrrp_bad_auth,
+ idle_to_master_transitions=self.idle_to_master_transitions,
+ idle_to_backup_transitions=self.idle_to_backup_transitions,
+ backup_to_master_transitions=self.backup_to_master_transitions,
+ master_to_backup_transitions=self.master_to_backup_transitions
+ )
+ return stats_dict
projects / vsorcdistro / .git / blobdiff