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// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/tab/tab_state_storage_backend.h"
#include "base/check.h"
#include "base/files/file_util.h"
#include "base/functional/bind.h"
#include "base/logging.h"
#include "base/task/thread_pool.h"
#include "sql/transaction.h"
namespace tabs {
namespace {
const int kCurrentVersionNumber = 1;
const int kCompatibleVersionNumber = 1;
constexpr char kTabsTableName[] = "tab_state";
constexpr base::TaskTraits kDBTaskTraits = {
base::MayBlock(), base::TaskPriority::BEST_EFFORT,
base::TaskShutdownBehavior::SKIP_ON_SHUTDOWN};
bool CreateSchema(sql::Database* db, sql::MetaTable* meta_table) {
DCHECK(db->HasActiveTransactions());
static constexpr char kCreateTabSchemaSql[] =
"CREATE TABLE IF NOT EXISTS tabs("
"id INTEGER PRIMARY KEY NOT NULL,"
"parent INTEGER NOT NULL,"
"position TEXT NOT NULL,"
"type INTEGER NOT NULL,"
"payload TEXT NOT NULL)"
"WITHOUT ROWID";
DCHECK(db->IsSQLValid(kCreateTabSchemaSql));
return db->Execute(kCreateTabSchemaSql);
}
bool InitSchema(sql::Database* db, sql::MetaTable* meta_table) {
bool has_metatable = meta_table->DoesTableExist(db);
bool has_schema = db->DoesTableExist(kTabsTableName);
if (!has_metatable && has_schema) {
db->Raze();
}
sql::Transaction transaction(db);
if (!transaction.Begin()) {
return false;
}
if (!meta_table->Init(db, kCurrentVersionNumber, kCompatibleVersionNumber)) {
return false;
}
if (meta_table->GetCompatibleVersionNumber() > kCurrentVersionNumber) {
return false;
}
if (!has_schema && !CreateSchema(db, meta_table)) {
return false;
}
return meta_table->SetVersionNumber(kCurrentVersionNumber) &&
meta_table->SetCompatibleVersionNumber(kCompatibleVersionNumber) &&
transaction.Commit();
}
bool InitOnDBSequence(base::FilePath profile_dir,
sql::Database* db,
sql::MetaTable* meta_table) {
CHECK(db);
CHECK(meta_table);
base::FilePath db_dir = profile_dir.Append(FILE_PATH_LITERAL("Tabs"));
if (!base::CreateDirectory(db_dir)) {
LOG(ERROR) << "Failed to create directory for tab state storage database: "
<< db_dir;
return false;
}
const base::FilePath db_path = db_dir.Append(FILE_PATH_LITERAL("TabDB"));
if (!db->Open(db_path)) {
LOG(ERROR) << "Failed to open tab state storage database: "
<< db->GetErrorMessage();
return false;
}
if (!InitSchema(db, meta_table)) {
DLOG(ERROR) << "Failed to create schema for tab state storage database: "
<< db->GetErrorMessage();
db->Close();
return false;
}
return true;
}
bool WriteTab(sql::Database* db,
int id,
int parent,
std::string position,
tabs_pb::TabState tab_state) {
CHECK(db);
static constexpr char kInsertTabSql[] =
"INSERT OR REPLACE INTO tabs"
"(id, parent, position, type, payload)"
"VALUES (?,?,?,?,?)";
DCHECK(db->IsSQLValid(kInsertTabSql));
sql::Statement write_statement(
db->GetCachedStatement(SQL_FROM_HERE, kInsertTabSql));
write_statement.BindInt(0, id);
write_statement.BindInt(1, parent);
write_statement.BindString(2, position);
write_statement.BindInt(3, 1);
std::string data;
tab_state.SerializeToString(&data);
write_statement.BindString(4, data);
return write_statement.Run();
}
} // namespace
TabStateStorageBackend::TabStateStorageBackend(
const base::FilePath& profile_path)
: profile_path_(profile_path),
db_task_runner_(
base::ThreadPool::CreateSequencedTaskRunner(kDBTaskTraits)),
db_(std::make_unique<sql::Database>(
sql::Database::Tag("TabStateStorage"))),
meta_table_(std::make_unique<sql::MetaTable>()) {}
TabStateStorageBackend::~TabStateStorageBackend() = default;
void TabStateStorageBackend::Initialize() {
db_task_runner_->PostTaskAndReplyWithResult(
FROM_HERE,
base::BindOnce(&InitOnDBSequence, profile_path_,
base::Unretained(db_.get()),
base::Unretained(meta_table_.get())),
base::BindOnce(&TabStateStorageBackend::OnDBReady,
weak_ptr_factory_.GetWeakPtr()));
}
void TabStateStorageBackend::SaveTabState(int id,
int parent,
std::string position,
tabs_pb::TabState tab_state) {
db_task_runner_->PostTaskAndReplyWithResult(
FROM_HERE,
base::BindOnce(&WriteTab, base::Unretained(db_.get()), id, parent,
position, tab_state),
base::BindOnce(&TabStateStorageBackend::OnWrite,
weak_ptr_factory_.GetWeakPtr()));
}
void TabStateStorageBackend::LoadAllTabStates(
base::OnceCallback<void(std::vector<tabs_pb::TabState>)> callback) {
db_task_runner_->PostTaskAndReplyWithResult(
FROM_HERE,
base::BindOnce(&TabStateStorageBackend::ReadAllTabs,
base::Unretained(this)),
base::BindOnce(&TabStateStorageBackend::OnAllTabsRead,
weak_ptr_factory_.GetWeakPtr(), std::move(callback)));
}
void TabStateStorageBackend::OnDBReady(bool success) {}
void TabStateStorageBackend::OnWrite(bool success) {}
std::vector<tabs_pb::TabState> TabStateStorageBackend::ReadAllTabs() {
std::vector<tabs_pb::TabState> tab_states;
static constexpr char kSelectAllTabsSql[] = "SELECT payload FROM tabs";
sql::Statement select_statement(
db_->GetCachedStatement(SQL_FROM_HERE, kSelectAllTabsSql));
while (select_statement.Step()) {
tabs_pb::TabState tab_state;
if (tab_state.ParseFromString(select_statement.ColumnString(0))) {
tab_states.emplace_back(std::move(tab_state));
}
}
return tab_states;
}
void TabStateStorageBackend::OnAllTabsRead(
base::OnceCallback<void(std::vector<tabs_pb::TabState>)> callback,
std::vector<tabs_pb::TabState> result) {
std::move(callback).Run(std::move(result));
}
} // namespace tabs
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