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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/apply_updates_command.h"
#include "base/location.h"
#include "sync/engine/update_applicator.h"
#include "sync/sessions/sync_session.h"
#include "sync/syncable/directory.h"
#include "sync/syncable/read_transaction.h"
#include "sync/syncable/write_transaction.h"
namespace syncer {
using sessions::SyncSession;
ApplyUpdatesCommand::ApplyUpdatesCommand() {}
ApplyUpdatesCommand::~ApplyUpdatesCommand() {}
std::set<ModelSafeGroup> ApplyUpdatesCommand::GetGroupsToChange(
const sessions::SyncSession& session) const {
std::set<ModelSafeGroup> groups_with_unapplied_updates;
FullModelTypeSet server_types_with_unapplied_updates;
{
syncable::Directory* dir = session.context()->directory();
syncable::ReadTransaction trans(FROM_HERE, dir);
server_types_with_unapplied_updates =
dir->GetServerTypesWithUnappliedUpdates(&trans);
}
for (FullModelTypeSet::Iterator it =
server_types_with_unapplied_updates.First(); it.Good(); it.Inc()) {
groups_with_unapplied_updates.insert(
GetGroupForModelType(it.Get(), session.routing_info()));
}
return groups_with_unapplied_updates;
}
SyncerError ApplyUpdatesCommand::ModelChangingExecuteImpl(
SyncSession* session) {
syncable::Directory* dir = session->context()->directory();
syncable::WriteTransaction trans(FROM_HERE, syncable::SYNCER, dir);
// Compute server types with unapplied updates that fall under our
// group restriction.
const FullModelTypeSet server_types_with_unapplied_updates =
dir->GetServerTypesWithUnappliedUpdates(&trans);
FullModelTypeSet server_type_restriction;
for (FullModelTypeSet::Iterator it =
server_types_with_unapplied_updates.First(); it.Good(); it.Inc()) {
if (GetGroupForModelType(it.Get(), session->routing_info()) ==
session->status_controller().group_restriction()) {
server_type_restriction.Put(it.Get());
}
}
// Don't process control type updates here. They will be handled elsewhere.
FullModelTypeSet control_types = ToFullModelTypeSet(ControlTypes());
server_type_restriction.RemoveAll(control_types);
std::vector<int64> handles;
dir->GetUnappliedUpdateMetaHandles(
&trans, server_type_restriction, &handles);
UpdateApplicator applicator(
dir->GetCryptographer(&trans),
session->routing_info(),
session->status_controller().group_restriction());
applicator.AttemptApplications(&trans, handles,
session->mutable_status_controller());
// This might be the first time we've fully completed a sync cycle, for
// some subset of the currently synced datatypes.
const sessions::StatusController& status(session->status_controller());
if (status.ServerSaysNothingMoreToDownload()) {
for (ModelTypeSet::Iterator it =
status.updates_request_types().First(); it.Good(); it.Inc()) {
// Don't set the flag for control types. We didn't process them here.
if (IsControlType(it.Get()))
continue;
// This gets persisted to the directory's backing store.
dir->set_initial_sync_ended_for_type(it.Get(), true);
}
}
return SYNCER_OK;
}
} // namespace syncer
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