PLC/InterfaceTags.py

   1 #
   2 # Thierry Parmentelat - INRIA
   3 #
   4 from PLC.Faults import *
   5 from PLC.Parameter import Parameter
   6 from PLC.Filter import Filter
   7 from PLC.Storage.AlchemyObject import AlchemyObj
   8 from PLC.TagTypes import TagType, TagTypes
   9 from PLC.Interfaces import Interface
  10
  11 class InterfaceTag(AlchemyObj):
  12     """
  13     Representation of a row in the interface_tag.
  14     To use, instantiate with a dict of values.
  15     """
  16
  17     table_name = 'interface_tags'
  18     fields = {
  19         'interface_tag_id': Parameter(int, "Interface setting identifier", primary_key=True),
  20         'interface_id': Interface.fields['interface_id'],
  21         'ip': Interface.fields['ip'],
  22         'tag_type_id': TagType.fields['tag_type_id'],
  23         'tagname': TagType.fields['tagname'],
  24         'description': TagType.fields['description'],
  25         'category': TagType.fields['category'],
  26         'value': Parameter(str, "Interface setting value"),
  27         ### relations
  28
  29         }
  30
  31     def sync(self, commit = True, validate=True):
  32         AlchemyObj.sync(self, commit, validate)
  33         if 'interface_tag_id' not in self:
  34             # Before a new slice is added, delete expired slices
  35             #expired = Slices(self.api, expires = -int(time.time()))
  36             #for slice in expired:
  37             #    slice.delete(commit)
  38             AlchemyObj.insert(self, dict(self))
  39         else:
  40             AlchemyObj.update(self, {'interface_tag_id': self['interface_tag_id']}, dict(self))
  41
  42     def delete(self, commit=True):
  43         assert 'interface_tag_id' in self
  44         AlchemyObj.delete(self, dict(self))
  45
  46
  47 class InterfaceTags(list):
  48     """
  49     Representation of row(s) from the interface_tag table in the
  50     database.
  51     """
  52
  53     def __init__(self, api, interface_tag_filter = None, columns = None):
  54         if not interface_tag_filter:
  55             interface_tags = InterfaceTag().select()
  56         if isinstance(interface_tag_filter, (list, tuple, set, int, long)):
  57             interface_tags = InterfaceTag().select(filter={'interface_tag_id': interface_tag_filter})
  58         elif isinstance(interface_tag_filter, dict):
  59             interface_tags = InterfaceTag().select(filter=interface_tag_filter)
  60         else:
  61             raise PLCInvalidArgument, "Wrong interface setting filter %r"%interface_tag_filter
  62
  63         for interface_tag in interface_tags:
  64             self.append(interface_tag)