def delete_network_postcommit(self, context):
     """ Delete network information from database."""
     LOG.info(_("Delete network begin."))
     network = context.current
     network_id = network['id']
     tenant_id = network['tenant_id']
     if db.is_network_created(tenant_id, network_id):
         LOG.info(_("Delete network %s from database."), network_id)
         db.delete_network(tenant_id, network_id)
     LOG.info(_("Delete network end."))
 def create_network_postcommit(self, context):
     """ Just insert network information into database.
         When the port is created, we do real operations
         in our physical device.
     """
     LOG.info(_("Create network postcommit begin."))
     network = context.current
     network_id = network['id']
     tenant_id = network['tenant_id']
     segments = context.network_segments
     if not db.is_network_created(tenant_id, network_id):
         LOG.info(_("Create network with id %s."), network_id)
         # [{'segmentation_id': id, 'physical_network': value,
         # 'id': id, 'network_type': gre | vlan | vxlan }]
         segment_type = segments[0]['network_type']
         segment_id = segments[0]['segmentation_id']
         db.create_network(tenant_id, network_id, segment_id, segment_type)
     LOG.info(_("Create network postcommit end."))