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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_rollback_manager.h"
#include "sync/internal_api/public/base/model_type.h"
#include "sync/internal_api/public/read_node.h"
#include "sync/internal_api/public/read_transaction.h"
#include "sync/internal_api/public/util/syncer_error.h"
#include "sync/internal_api/public/write_transaction.h"
#include "sync/syncable/directory.h"
#include "sync/syncable/mutable_entry.h"
namespace syncer {
SyncRollbackManager::SyncRollbackManager()
: change_delegate_(NULL) {
}
SyncRollbackManager::~SyncRollbackManager() {
}
void SyncRollbackManager::Init(
const base::FilePath& database_location,
const WeakHandle<JsEventHandler>& event_handler,
const std::string& sync_server_and_path,
int sync_server_port,
bool use_ssl,
scoped_ptr<HttpPostProviderFactory> post_factory,
const std::vector<scoped_refptr<ModelSafeWorker> >& workers,
ExtensionsActivity* extensions_activity,
SyncManager::ChangeDelegate* change_delegate,
const SyncCredentials& credentials,
const std::string& invalidator_client_id,
const std::string& restored_key_for_bootstrapping,
const std::string& restored_keystore_key_for_bootstrapping,
InternalComponentsFactory* internal_components_factory,
Encryptor* encryptor,
scoped_ptr<UnrecoverableErrorHandler> unrecoverable_error_handler,
ReportUnrecoverableErrorFunction
report_unrecoverable_error_function,
CancelationSignal* cancelation_signal) {
SyncRollbackManagerBase::Init(database_location, event_handler,
sync_server_and_path, sync_server_port,
use_ssl, post_factory.Pass(),
workers, extensions_activity, change_delegate,
credentials, invalidator_client_id,
restored_key_for_bootstrapping,
restored_keystore_key_for_bootstrapping,
internal_components_factory, encryptor,
unrecoverable_error_handler.Pass(),
report_unrecoverable_error_function,
cancelation_signal);
change_delegate_ = change_delegate;
for (size_t i = 0; i < workers.size(); ++i) {
ModelSafeGroup group = workers[i]->GetModelSafeGroup();
CHECK(workers_.find(group) == workers_.end());
workers_[group] = workers[i];
}
rollback_ready_types_ = GetUserShare()->directory->InitialSyncEndedTypes();
rollback_ready_types_.RetainAll(BackupTypes());
}
void SyncRollbackManager::StartSyncingNormally(
const ModelSafeRoutingInfo& routing_info){
std::map<ModelType, syncable::Directory::Metahandles> to_delete;
{
WriteTransaction trans(FROM_HERE, GetUserShare());
syncable::Directory::Metahandles unsynced;
GetUserShare()->directory->GetUnsyncedMetaHandles(trans.GetWrappedTrans(),
&unsynced);
for (size_t i = 0; i < unsynced.size(); ++i) {
syncable::MutableEntry e(trans.GetWrappedWriteTrans(),
syncable::GET_BY_HANDLE, unsynced[i]);
if (!e.good() || e.GetIsDel() || e.GetId().ServerKnows())
continue;
// TODO(haitaol): roll back entries that are backed up but whose content
// is merged with local model during association.
ModelType type = GetModelTypeFromSpecifics(e.GetSpecifics());
if (!rollback_ready_types_.Has(type))
continue;
to_delete[type].push_back(unsynced[i]);
}
}
for (std::map<ModelType, syncable::Directory::Metahandles>::iterator it =
to_delete.begin(); it != to_delete.end(); ++it) {
ModelSafeGroup group = routing_info.find(it->first)->second;
CHECK(workers_.find(group) != workers_.end());
workers_[group]->DoWorkAndWaitUntilDone(
base::Bind(&SyncRollbackManager::DeleteOnWorkerThread,
base::Unretained(this),
it->first, it->second));
}
}
SyncerError SyncRollbackManager::DeleteOnWorkerThread(
ModelType type, std::vector<int64> handles) {
CHECK(change_delegate_);
{
ChangeRecordList deletes;
WriteTransaction trans(FROM_HERE, GetUserShare());
for (size_t i = 0; i < handles.size(); ++i) {
syncable::MutableEntry e(trans.GetWrappedWriteTrans(),
syncable::GET_BY_HANDLE, handles[i]);
if (!e.good() || e.GetIsDel())
continue;
ChangeRecord del;
del.action = ChangeRecord::ACTION_DELETE;
del.id = handles[i];
del.specifics = e.GetSpecifics();
deletes.push_back(del);
}
change_delegate_->OnChangesApplied(type, 1, &trans,
MakeImmutable(&deletes));
}
change_delegate_->OnChangesComplete(type);
return SYNCER_OK;
}
} // namespace syncer
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