src/sync/internal_api/sync_backup_manager.cc

   1 // Copyright 2014 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/internal_api/sync_backup_manager.h"
   6
   7 #include "sync/internal_api/public/read_node.h"
   8 #include "sync/internal_api/public/write_transaction.h"
   9 #include "sync/syncable/directory.h"
  10 #include "sync/syncable/mutable_entry.h"
  11
  12 namespace syncer {
  13
  14 SyncBackupManager::SyncBackupManager()
  15     : in_normalization_(false) {
  16 }
  17
  18 SyncBackupManager::~SyncBackupManager() {
  19 }
  20
  21 void SyncBackupManager::Init(
  22       const base::FilePath& database_location,
  23       const WeakHandle<JsEventHandler>& event_handler,
  24       const std::string& sync_server_and_path,
  25       int sync_server_port,
  26       bool use_ssl,
  27       scoped_ptr<HttpPostProviderFactory> post_factory,
  28       const std::vector<scoped_refptr<ModelSafeWorker> >& workers,
  29       ExtensionsActivity* extensions_activity,
  30       SyncManager::ChangeDelegate* change_delegate,
  31       const SyncCredentials& credentials,
  32       const std::string& invalidator_client_id,
  33       const std::string& restored_key_for_bootstrapping,
  34       const std::string& restored_keystore_key_for_bootstrapping,
  35       InternalComponentsFactory* internal_components_factory,
  36       Encryptor* encryptor,
  37       scoped_ptr<UnrecoverableErrorHandler> unrecoverable_error_handler,
  38       ReportUnrecoverableErrorFunction
  39           report_unrecoverable_error_function,
  40       CancelationSignal* cancelation_signal) {
  41   if (SyncRollbackManagerBase::InitInternal(
  42           database_location,
  43           internal_components_factory,
  44           unrecoverable_error_handler.Pass(),
  45           report_unrecoverable_error_function)) {
  46     GetUserShare()->directory->CollectMetaHandleCounts(
  47         &status_.num_entries_by_type, &status_.num_to_delete_entries_by_type);
  48
  49     HideSyncPreference(PRIORITY_PREFERENCES);
  50     HideSyncPreference(PREFERENCES);
  51   }
  52 }
  53
  54 void SyncBackupManager::SaveChanges() {
  55   if (initialized()) {
  56     NormalizeEntries();
  57     GetUserShare()->directory->SaveChanges();
  58   }
  59 }
  60
  61 SyncStatus SyncBackupManager::GetDetailedStatus() const {
  62   return status_;
  63 }
  64
  65 ModelTypeSet SyncBackupManager::HandleTransactionEndingChangeEvent(
  66     const syncable::ImmutableWriteTransactionInfo& write_transaction_info,
  67     syncable::BaseTransaction* trans) {
  68   ModelTypeSet types;
  69   if (in_normalization_) {
  70     // Skip if in our own WriteTransaction from NormalizeEntries().
  71     in_normalization_ = false;
  72     return types;
  73   }
  74
  75   for (syncable::EntryKernelMutationMap::const_iterator it =
  76       write_transaction_info.Get().mutations.Get().begin();
  77       it != write_transaction_info.Get().mutations.Get().end(); ++it) {
  78     int64 id = it->first;
  79     if (unsynced_.find(id) == unsynced_.end()) {
  80       unsynced_.insert(id);
  81
  82       const syncable::EntryKernel& e = it->second.mutated;
  83       ModelType type = e.GetModelType();
  84       types.Put(type);
  85       if (!e.ref(syncable::ID).ServerKnows())
  86         status_.num_entries_by_type[type]++;
  87       if (e.ref(syncable::IS_DEL))
  88         status_.num_to_delete_entries_by_type[type]++;
  89     }
  90   }
  91   return types;
  92 }
  93
  94 void SyncBackupManager::NormalizeEntries() {
  95   WriteTransaction trans(FROM_HERE, GetUserShare());
  96   in_normalization_ = true;
  97   for (std::set<int64>::const_iterator it = unsynced_.begin();
  98       it != unsynced_.end(); ++it) {
  99     syncable::MutableEntry entry(trans.GetWrappedWriteTrans(),
 100                                  syncable::GET_BY_HANDLE, *it);
 101     CHECK(entry.good());
 102
 103     if (!entry.GetId().ServerKnows())
 104       entry.PutId(syncable::Id::CreateFromServerId(entry.GetId().value()));
 105     if (!entry.GetParentId().ServerKnows()) {
 106       entry.PutParentIdPropertyOnly(syncable::Id::CreateFromServerId(
 107           entry.GetParentId().value()));
 108     }
 109     entry.PutBaseVersion(1);
 110     entry.PutIsUnsynced(false);
 111   }
 112   unsynced_.clear();
 113 }
 114
 115 void SyncBackupManager::HideSyncPreference(ModelType type) {
 116   WriteTransaction trans(FROM_HERE, GetUserShare());
 117   ReadNode pref_root(&trans);
 118   if (BaseNode::INIT_OK != pref_root.InitTypeRoot(type))
 119     return;
 120
 121   std::vector<int64> pref_ids;
 122   pref_root.GetChildIds(&pref_ids);
 123   for (uint32 i = 0; i < pref_ids.size(); ++i) {
 124     syncable::MutableEntry entry(trans.GetWrappedWriteTrans(),
 125                                  syncable::GET_BY_HANDLE, pref_ids[i]);
 126     if (entry.good()) {
 127       // HACKY: Set IS_DEL to true to remove entry from parent-children
 128       // index so that it's not returned when syncable service asks
 129       // for sync data. Syncable service then creates entry for local
 130       // model. Then the existing entry is undeleted and set to local value
 131       // because it has the same unique client tag.
 132       entry.PutIsDel(true);
 133       entry.PutIsUnsynced(false);
 134
 135       // Don't persist on disk so that if backup is aborted before receiving
 136       // local preference values, values in sync DB are saved.
 137       GetUserShare()->directory->UnmarkDirtyEntry(
 138           trans.GetWrappedWriteTrans(), &entry);
 139     }
 140   }
 141 }
 142
 143 void SyncBackupManager::RegisterDirectoryTypeDebugInfoObserver(
 144     syncer::TypeDebugInfoObserver* observer) {}
 145
 146 void SyncBackupManager::UnregisterDirectoryTypeDebugInfoObserver(
 147     syncer::TypeDebugInfoObserver* observer) {}
 148
 149 bool SyncBackupManager::HasDirectoryTypeDebugInfoObserver(
 150     syncer::TypeDebugInfoObserver* observer) { return false; }
 151
 152 void SyncBackupManager::RequestEmitDebugInfo() {}
 153
 154 }  // namespace syncer