Switching from deleting caches to version checking the cache

[theonering] / src / gvoice / conversations.py

diff --git a/src/gvoice/conversations.py b/src/gvoice/conversations.py
index 809d0fc..384fc4e 100644 (file)
--- a/src/gvoice/conversations.py
+++ b/src/gvoice/conversations.py
@@ -10,6 +10,7 @@ try:
 except ImportError:
        import pickle
 
+import constants
 import util.coroutines as coroutines
 import util.misc as util_misc
 
@@ -33,14 +34,23 @@ class Conversations(object):
                assert not self._conversations
                try:
                        with open(path, "rb") as f:
-                               self._conversations = pickle.load(f)
+                               fileVersion, fileBuild, convs = pickle.load(f)
                except (pickle.PickleError, IOError):
                        _moduleLogger.exception("While loading for %s" % self._name)
+                       return
+
+               if fileVersion == constants.__version__ and fileBuild == constants.__build__:
+                       self._conversations = convs
+               else:
+                       _moduleLogger.debug(
+                               "%s Skipping cache due to version mismatch (%s-%s)" % (self._name, fileVersion, fileBuild)
+                       )
 
        def save(self, path):
                try:
+                       dataToDump = (constants.__version__, constants.__build__, self._conversations)
                        with open(path, "wb") as f:
-                               pickle.dump(self._conversations, f, pickle.HIGHEST_PROTOCOL)
+                               pickle.dump(dataToDump, f, pickle.HIGHEST_PROTOCOL)
                except (pickle.PickleError, IOError):
                        _moduleLogger.exception("While saving for %s" % self._name)