sync/engine/model_changing_syncer_command.cc

   1 // Copyright (c) 2012 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/engine/model_changing_syncer_command.h"
   6
   7 #include "base/basictypes.h"
   8 #include "base/bind.h"
   9 #include "base/bind_helpers.h"
  10 #include "sync/sessions/status_controller.h"
  11 #include "sync/sessions/sync_session.h"
  12
  13 namespace syncer {
  14
  15 SyncerError ModelChangingSyncerCommand::ExecuteImpl(
  16     sessions::SyncSession* session) {
  17   work_session_ = session;
  18   SyncerError result = SYNCER_OK;
  19
  20   const std::set<ModelSafeGroup>& groups_to_change =
  21       GetGroupsToChange(*work_session_);
  22   for (size_t i = 0; i < session->context()->workers().size(); ++i) {
  23     ModelSafeWorker* worker = session->context()->workers()[i].get();
  24     ModelSafeGroup group = worker->GetModelSafeGroup();
  25     // Skip workers whose group isn't active.
  26     if (groups_to_change.count(group) == 0u) {
  27       DVLOG(2) << "Skipping worker for group "
  28                << ModelSafeGroupToString(group);
  29       continue;
  30     }
  31
  32     sessions::StatusController* status =
  33         work_session_->mutable_status_controller();
  34     sessions::ScopedModelSafeGroupRestriction r(status, group);
  35     WorkCallback c = base::Bind(
  36         &ModelChangingSyncerCommand::StartChangingModel,
  37         // We wait until the callback is executed. So it is safe to use
  38         // unretained.
  39         base::Unretained(this));
  40
  41     SyncerError this_worker_result = worker->DoWorkAndWaitUntilDone(c);
  42     // TODO(rlarocque): Figure out a better way to deal with errors from
  43     // multiple models at once.  See also: crbug.com/109422.
  44     if (this_worker_result != SYNCER_OK)
  45       result = this_worker_result;
  46   }
  47
  48   return result;
  49 }
  50
  51 }  // namespace syncer