text: from oslo_log import log
  
  from asr1k_neutron_l3.common.instrument import instrument
  from asr1k_neutron_l3.plugins.db import asr1k_db
  from neutron.plugins.ml2.plugin import Ml2Plugin
  from neutron_lib.api.definitions import portbindings
  
  LOG = log.getLogger(__name__)
  
  
  class Initializer(object):
      def __init__(self, plugin, context):
          self.plugin = plugin
          self.context = context
          self.db = asr1k_db.get_db_plugin()
  
      @instrument()
      def init_scheduler(self):
          result = {}
  
          ml2 = Ml2Plugin()
          router_ids = self.db.get_all_router_ids(self.context)
          scheduled = 0
          for router_id in router_ids:
              result[router_id] = {}
              agent = self.plugin.schedule_router(self.context, router_id)
              if agent is not None:
  
                  scheduled += 1
                  agent_host = agent.host
                  result[router_id]["scheduled"] = agent_host
              else:
                  agent = self.plugin.get_agent_for_router(self.context, router_id)
  
                  agent_host = agent.get('host')
                  result[router_id]["already_scheduled"] = agent_host
  
              if agent_host is None:
                  result[router_id]['error'] = "Router is not scheduled to a host"
  
          return result
  
      @instrument()
      def init_bindings(self):
          result = {}
  
          ml2 = Ml2Plugin()
          router_ids = self.db.get_all_router_ids(self.context)
          port_count = 0
          for router_id in router_ids:
              LOG.warn("Updating Router %s" % router_id)
              result[router_id] = {}
              agent = self.plugin.get_agent_for_router(self.context, router_id)
              agent_host = agent.get('host')
  
              if agent_host is not None:
                  ports = self.db.get_ports_for_router_ids(self.context, [router_id])
                  result[router_id]["port host"] = []
                  for port in ports:
                      LOG.warn("Updating Port %s of Router %s" % (port.id, router_id))
                      port_count += 1
                      port_id = port.get('id')
                      if port.get(portbindings.HOST_ID) != agent_host:
                          update_result = ml2.update_port(self.context, port_id,
                                                          {'port': {'id': port_id, portbindings.HOST_ID: agent_host}})
                      result[router_id]["port host"].append({'port': port_id, 'host': agent_host})
              else:
                  result[router_id]['error'] = "Router is not scheduled to a host"
              result["ports_processed"] = port_count
  
          return result
  
      def init_atts(self):
          result = {}
  
          router_ids = self.db.get_all_router_ids(self.context)
  
          for router_id in router_ids:
              try:
                  result[router_id] = self.plugin.ensure_config(self.context, router_id)
              except BaseException as e:
                  LOG.exception(e)
                  result[router_id] = e.__str__()
  
          return result
  
      @instrument()
      def init_config(self, host):
          router_ids = self.db.get_all_router_ids(self.context, host=host)
  
          router_infos = self.plugin.get_sync_data(self.context, router_ids=router_ids, host=host)
  
          config = self.plugin.notify_agent_init_config(self.context, host, router_infos)
  
          if config is not None:
              return "".join(config)
  