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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "sync/engine/model_changing_syncer_command.h"
#include "base/basictypes.h"
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "sync/sessions/status_controller.h"
#include "sync/sessions/sync_session.h"
namespace syncer {
SyncerError ModelChangingSyncerCommand::ExecuteImpl(
sessions::SyncSession* session) {
work_session_ = session;
SyncerError result = SYNCER_OK;
const std::set<ModelSafeGroup>& groups_to_change =
GetGroupsToChange(*work_session_);
for (size_t i = 0; i < session->workers().size(); ++i) {
ModelSafeWorker* worker = work_session_->workers()[i];
ModelSafeGroup group = worker->GetModelSafeGroup();
// Skip workers whose group isn't active.
if (groups_to_change.count(group) == 0u) {
DVLOG(2) << "Skipping worker for group "
<< ModelSafeGroupToString(group);
continue;
}
sessions::StatusController* status =
work_session_->mutable_status_controller();
sessions::ScopedModelSafeGroupRestriction r(status, group);
WorkCallback c = base::Bind(
&ModelChangingSyncerCommand::StartChangingModel,
// We wait until the callback is executed. So it is safe to use
// unretained.
base::Unretained(this));
SyncerError this_worker_result = worker->DoWorkAndWaitUntilDone(c);
// TODO(rlarocque): Figure out a better way to deal with errors from
// multiple models at once. See also: crbug.com/109422.
if (this_worker_result != SYNCER_OK)
result = this_worker_result;
}
return result;
}
} // namespace syncer
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