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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 "components/persistent_cache/sqlite/backend_storage_delegate.h"
#include <memory>
#include <utility>
#include "base/files/file_path.h"
#include "base/numerics/clamped_math.h"
#include "base/types/expected_macros.h"
#include "components/persistent_cache/pending_backend.h"
#include "components/persistent_cache/sqlite/sqlite_backend_impl.h"
#include "components/persistent_cache/sqlite/vfs_util.h"
#include "components/sqlite_vfs/client.h"
#include "components/sqlite_vfs/pending_file_set.h"
#include "components/sqlite_vfs/sqlite_database_vfs_file_set.h"
#include "components/sqlite_vfs/vfs_utils.h"
namespace persistent_cache::sqlite {
std::optional<PendingBackend> BackendStorageDelegate::MakePendingBackend(
Client client,
const base::FilePath& directory,
const base::FilePath& base_name,
bool single_connection,
bool journal_mode_wal) {
ASSIGN_OR_RETURN(auto pending_file_set,
sqlite_vfs::MakePendingFileSet(
VfsClientFromClient(client), directory, base_name,
single_connection, journal_mode_wal));
return PendingBackend(std::move(pending_file_set));
}
std::unique_ptr<Backend> BackendStorageDelegate::MakeBackend(
Client client,
const base::FilePath& directory,
const base::FilePath& base_name,
bool single_connection,
bool journal_mode_wal) {
if (auto pending_backend = MakePendingBackend(
client, directory, base_name, single_connection, journal_mode_wal);
pending_backend.has_value()) {
return SqliteBackendImpl::Bind(*std::move(pending_backend), client);
}
return nullptr;
}
std::optional<PendingBackend> BackendStorageDelegate::ShareReadOnlyConnection(
const base::FilePath& directory,
const base::FilePath& base_name,
const Backend& backend) {
ASSIGN_OR_RETURN(
auto pending_file_set,
sqlite_vfs::ShareConnection(
directory, base_name,
static_cast<const SqliteBackendImpl&>(backend).file_set(),
/*read_write=*/false));
return PendingBackend(std::move(pending_file_set));
}
std::optional<PendingBackend> BackendStorageDelegate::ShareReadWriteConnection(
const base::FilePath& directory,
const base::FilePath& base_name,
const Backend& backend) {
ASSIGN_OR_RETURN(
auto pending_file_set,
sqlite_vfs::ShareConnection(
directory, base_name,
static_cast<const SqliteBackendImpl&>(backend).file_set(),
/*read_write=*/true));
return PendingBackend(std::move(pending_file_set));
}
base::FilePath BackendStorageDelegate::GetBaseName(const base::FilePath& file) {
return sqlite_vfs::GetBaseName(file);
}
int64_t BackendStorageDelegate::DeleteFiles(Client client,
const base::FilePath& directory,
const base::FilePath& base_name) {
return sqlite_vfs::DeleteFiles(VfsClientFromClient(client), directory,
base_name);
}
} // namespace persistent_cache::sqlite
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