snapshot_utils.h

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/*
 * Copyright (C) 2023 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
#pragma once
 
#include <functional>
#include <string>
 
#include "json/value.h"
 
#include "cuttlefish/host/libs/config/cuttlefish_config.h"
#include "cuttlefish/result/result.h"
 
namespace cuttlefish {
 
/*
 * Copy recursively from src_dir_path to dest_dir_path as long as
 * the predicate function returns true
 */
Result<void> CopyDirectoryRecursively(
    const std::string& src_dir_path, const std::string& dest_dir_path,
    bool verify_dest_dir_empty = false,
    std::function<bool(const std::string&)> predicate = [](const std::string&) {
      return true;
    });
 
Result<Json::Value> CreateMetaInfo(const CuttlefishConfig& config,
                                   const std::string& snapshot_path);
 
Result<std::string> InstanceGuestSnapshotPath(const Json::Value& meta_json,
                                              const std::string& instance_id);
std::string SnapshotMetaJsonPath(const std::string& snapshot_path);
Result<Json::Value> LoadMetaJson(const std::string& snapshot_path);
 
Result<std::vector<std::string>> GuestSnapshotDirectories(
    const std::string& snapshot_path);
 
inline constexpr const char kMetaInfoJsonFileName[] = "snapshot_meta_info.json";
inline constexpr const char kGuestSnapshotField[] = "guest_snapshot";
inline constexpr const char kSnapshotPathField[] = "snapshot_path";
inline constexpr const char kCfHomeField[] = "HOME";
inline constexpr const char kGuestSnapshotBase[] = "guest_vm";
 
}  // namespace cuttlefish