git.maemo.org Git - theonering/blob - src/gvoice/conversations.py

   1 #!/usr/bin/python
   2
   3 from __future__ import with_statement
   4
   5 import logging
   6
   7 try:
   8         import cPickle
   9         pickle = cPickle
  10 except ImportError:
  11         import pickle
  12
  13 import util.coroutines as coroutines
  14 import util.misc as util_misc
  15
  16
  17 _moduleLogger = logging.getLogger("gvoice.conversations")
  18
  19
  20 class Conversations(object):
  21
  22         def __init__(self, getter):
  23                 self._get_raw_conversations = getter
  24                 self._conversations = {}
  25
  26                 self.updateSignalHandler = coroutines.CoTee()
  27
  28         @property
  29         def _name(self):
  30                 return repr(self._get_raw_conversations.__name__)
  31
  32         def load(self, path):
  33                 assert not self._conversations
  34                 try:
  35                         with open(path, "rb") as f:
  36                                 self._conversations = pickle.load(f)
  37                 except (pickle.PickleError, IOError):
  38                         _moduleLogger.exception("While loading for %s" % self._name)
  39
  40         def save(self, path):
  41                 try:
  42                         with open(path, "wb") as f:
  43                                 pickle.dump(self._conversations, f, pickle.HIGHEST_PROTOCOL)
  44                 except (pickle.PickleError, IOError):
  45                         _moduleLogger.exception("While saving for %s" % self._name)
  46
  47         def update(self, force=False):
  48                 if not force and self._conversations:
  49                         return
  50
  51                 oldConversationIds = set(self._conversations.iterkeys())
  52
  53                 updateConversationIds = set()
  54                 conversations = list(self._get_raw_conversations())
  55                 conversations.sort()
  56                 for conversation in conversations:
  57                         key = conversation.contactId, util_misc.normalize_number(conversation.number)
  58                         try:
  59                                 mergedConversations = self._conversations[key]
  60                         except KeyError:
  61                                 mergedConversations = MergedConversations()
  62                                 self._conversations[key] = mergedConversations
  63
  64                         try:
  65                                 mergedConversations.append_conversation(conversation)
  66                                 isConversationUpdated = True
  67                         except RuntimeError, e:
  68                                 if False:
  69                                         _moduleLogger.info("%s Skipping conversation for %r because '%s'" % (self._name, key, e))
  70                                 isConversationUpdated = False
  71
  72                         if isConversationUpdated:
  73                                 updateConversationIds.add(key)
  74
  75                 if updateConversationIds:
  76                         message = (self, updateConversationIds, )
  77                         self.updateSignalHandler.stage.send(message)
  78
  79         def get_conversations(self):
  80                 return self._conversations.iterkeys()
  81
  82         def get_conversation(self, key):
  83                 return self._conversations[key]
  84
  85         def clear_conversation(self, key):
  86                 try:
  87                         del self._conversations[key]
  88                 except KeyError:
  89                         _moduleLogger.info("%s Conversation never existed for %r" % (self._name, key, ))
  90
  91         def clear_all(self):
  92                 self._conversations.clear()
  93
  94
  95 class MergedConversations(object):
  96
  97         def __init__(self):
  98                 self._conversations = []
  99
 100         def append_conversation(self, newConversation):
 101                 self._validate(newConversation)
 102                 for similarConversation in self._find_related_conversation(newConversation.id):
 103                         self._update_previous_related_conversation(similarConversation, newConversation)
 104                         self._remove_repeats(similarConversation, newConversation)
 105                 self._conversations.append(newConversation)
 106
 107         @property
 108         def conversations(self):
 109                 return self._conversations
 110
 111         def _validate(self, newConversation):
 112                 if not self._conversations:
 113                         return
 114
 115                 for constantField in ("contactId", "number"):
 116                         assert getattr(self._conversations[0], constantField) == getattr(newConversation, constantField), "Constant field changed, soemthing is seriously messed up: %r v %r" % (
 117                                 getattr(self._conversations[0], constantField),
 118                                 getattr(newConversation, constantField),
 119                         )
 120
 121                 if newConversation.time <= self._conversations[-1].time:
 122                         raise RuntimeError("Conversations got out of order")
 123
 124         def _find_related_conversation(self, convId):
 125                 similarConversations = (
 126                         conversation
 127                         for conversation in self._conversations
 128                         if conversation.id == convId
 129                 )
 130                 return similarConversations
 131
 132         def _update_previous_related_conversation(self, relatedConversation, newConversation):
 133                 for commonField in ("isRead", "isSpam", "isTrash", "isArchived"):
 134                         newValue = getattr(newConversation, commonField)
 135                         setattr(relatedConversation, commonField, newValue)
 136
 137         def _remove_repeats(self, relatedConversation, newConversation):
 138                 newConversationMessages = newConversation.messages
 139                 newConversation.messages = [
 140                         newMessage
 141                         for newMessage in newConversationMessages
 142                         if newMessage not in relatedConversation.messages
 143                 ]
 144                 _moduleLogger.debug("%s Found %d new messages in conversation %s (%d/%d)" % (
 145                         self._name,
 146                         len(newConversationMessages) - len(newConversation.messages),
 147                         newConversation.id,
 148                         len(newConversation.messages),
 149                         len(newConversationMessages),
 150                 ))
 151                 assert 0 < len(newConversation.messages), "Everything shouldn't have been removed"