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// Copyright 2014 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/internal_api/sync_backup_manager.h"
#include "sync/internal_api/public/read_node.h"
#include "sync/internal_api/public/write_transaction.h"
#include "sync/syncable/directory.h"
#include "sync/syncable/mutable_entry.h"
#include "url/gurl.h"
namespace syncer {
SyncBackupManager::SyncBackupManager()
: in_normalization_(false) {
}
SyncBackupManager::~SyncBackupManager() {
}
void SyncBackupManager::Init(InitArgs* args) {
if (SyncRollbackManagerBase::InitInternal(
args->database_location,
args->internal_components_factory.get(),
InternalComponentsFactory::STORAGE_ON_DISK_DEFERRED,
args->unrecoverable_error_handler.Pass(),
args->report_unrecoverable_error_function)) {
GetUserShare()->directory->CollectMetaHandleCounts(
&status_.num_entries_by_type, &status_.num_to_delete_entries_by_type);
HideSyncPreference(PRIORITY_PREFERENCES);
HideSyncPreference(PREFERENCES);
}
}
void SyncBackupManager::SaveChanges() {
if (initialized())
NormalizeEntries();
}
SyncStatus SyncBackupManager::GetDetailedStatus() const {
return status_;
}
ModelTypeSet SyncBackupManager::HandleTransactionEndingChangeEvent(
const syncable::ImmutableWriteTransactionInfo& write_transaction_info,
syncable::BaseTransaction* trans) {
ModelTypeSet types;
if (in_normalization_) {
// Skip if in our own WriteTransaction from NormalizeEntries().
in_normalization_ = false;
return types;
}
for (syncable::EntryKernelMutationMap::const_iterator it =
write_transaction_info.Get().mutations.Get().begin();
it != write_transaction_info.Get().mutations.Get().end(); ++it) {
int64 id = it->first;
if (unsynced_.find(id) == unsynced_.end()) {
unsynced_.insert(id);
const syncable::EntryKernel& e = it->second.mutated;
ModelType type = e.GetModelType();
types.Put(type);
if (!e.ref(syncable::ID).ServerKnows())
status_.num_entries_by_type[type]++;
if (e.ref(syncable::IS_DEL))
status_.num_to_delete_entries_by_type[type]++;
}
}
return types;
}
void SyncBackupManager::NormalizeEntries() {
WriteTransaction trans(FROM_HERE, GetUserShare());
in_normalization_ = true;
for (std::set<int64>::const_iterator it = unsynced_.begin();
it != unsynced_.end(); ++it) {
syncable::MutableEntry entry(trans.GetWrappedWriteTrans(),
syncable::GET_BY_HANDLE, *it);
CHECK(entry.good());
if (!entry.GetId().ServerKnows())
entry.PutId(syncable::Id::CreateFromServerId(entry.GetId().value()));
if (!entry.GetParentId().ServerKnows()) {
entry.PutParentIdPropertyOnly(syncable::Id::CreateFromServerId(
entry.GetParentId().value()));
}
entry.PutBaseVersion(1);
entry.PutIsUnsynced(false);
}
unsynced_.clear();
}
void SyncBackupManager::HideSyncPreference(ModelType type) {
WriteTransaction trans(FROM_HERE, GetUserShare());
ReadNode pref_root(&trans);
if (BaseNode::INIT_OK != pref_root.InitTypeRoot(type))
return;
std::vector<int64> pref_ids;
pref_root.GetChildIds(&pref_ids);
for (uint32 i = 0; i < pref_ids.size(); ++i) {
syncable::MutableEntry entry(trans.GetWrappedWriteTrans(),
syncable::GET_BY_HANDLE, pref_ids[i]);
if (entry.good()) {
// HACKY: Set IS_DEL to true to remove entry from parent-children
// index so that it's not returned when syncable service asks
// for sync data. Syncable service then creates entry for local
// model. Then the existing entry is undeleted and set to local value
// because it has the same unique client tag.
entry.PutIsDel(true);
entry.PutIsUnsynced(false);
// Don't persist on disk so that if backup is aborted before receiving
// local preference values, values in sync DB are saved.
GetUserShare()->directory->UnmarkDirtyEntry(
trans.GetWrappedWriteTrans(), &entry);
}
}
}
void SyncBackupManager::ShutdownOnSyncThread(ShutdownReason reason) {
if (reason == SWITCH_MODE_SYNC) {
NormalizeEntries();
GetUserShare()->directory->SaveChanges();
}
SyncRollbackManagerBase::ShutdownOnSyncThread(reason);
}
void SyncBackupManager::RegisterDirectoryTypeDebugInfoObserver(
syncer::TypeDebugInfoObserver* observer) {}
void SyncBackupManager::UnregisterDirectoryTypeDebugInfoObserver(
syncer::TypeDebugInfoObserver* observer) {}
bool SyncBackupManager::HasDirectoryTypeDebugInfoObserver(
syncer::TypeDebugInfoObserver* observer) { return false; }
void SyncBackupManager::RequestEmitDebugInfo() {}
} // namespace syncer
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