sync/sessions/nudge_tracker.cc

   1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "sync/sessions/nudge_tracker.h"
   6 #include "sync/protocol/sync.pb.h"
   7
   8 namespace syncer {
   9 namespace sessions {
  10
  11 NudgeTracker::NudgeTracker() { }
  12
  13 NudgeTracker::~NudgeTracker() { }
  14
  15 void NudgeTracker::CoalesceSources(const SyncSourceInfo& source) {
  16   CoalesceStates(source.types, &source_info_.types);
  17   source_info_.updates_source = source.updates_source;
  18 }
  19
  20 bool NudgeTracker::IsEmpty() {
  21   return source_info_.types.empty();
  22 }
  23
  24 void NudgeTracker::Reset() {
  25   source_info_ = SyncSourceInfo();
  26 }
  27
  28 // TODO(rlarocque): This function often reports incorrect results.  However, it
  29 // is compatible with the "classic" behaviour.  We would need to make the nudge
  30 // tracker stop overwriting its own information (ie. fix crbug.com/231693)
  31 // before we could even try to report correct results.  The main issue is that
  32 // an notifications and local modifications nudges may overlap with each other
  33 // in sych a way that we lose track of which types were or were not locally
  34 // modified.
  35 ModelTypeSet NudgeTracker::GetLocallyModifiedTypes() const {
  36   ModelTypeSet locally_modified;
  37
  38   if (source_info_.updates_source != sync_pb::GetUpdatesCallerInfo::LOCAL) {
  39     return locally_modified;
  40   }
  41
  42   for (ModelTypeInvalidationMap::const_iterator i = source_info_.types.begin();
  43        i != source_info().types.end(); ++i) {
  44     locally_modified.Put(i->first);
  45   }
  46   return locally_modified;
  47 }
  48
  49 }  // namespace sessions
  50 }  // namespace syncer