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#pragma once
#include <Core/Types.h>
#include <Common/ThreadPool_fwd.h>
namespace Poco { class Logger; }
namespace DB
{
class IBackup;
class IBackupEntry;
using BackupPtr = std::shared_ptr<const IBackup>;
using BackupEntryPtr = std::shared_ptr<const IBackupEntry>;
using BackupEntries = std::vector<std::pair<String, BackupEntryPtr>>;
struct ReadSettings;
/// Information about a file stored in a backup.
struct BackupFileInfo
{
String file_name;
UInt64 size = 0;
UInt128 checksum{0};
/// for incremental backups
UInt64 base_size = 0;
UInt128 base_checksum{0};
/// Name of the data file. An empty string means there is no data file (that can happen if the file is empty or was taken from the base backup as a whole).
/// This field is set during backup coordination (see the class BackupCoordinationFileInfos).
String data_file_name;
/// Index of the data file. -1 means there is no data file.
/// This field is set during backup coordination (see the class BackupCoordinationFileInfos).
size_t data_file_index = static_cast<size_t>(-1);
/// Whether this file is encrypted by an encrypted disk.
bool encrypted_by_disk = false;
struct LessByFileName
{
bool operator()(const BackupFileInfo & lhs, const BackupFileInfo & rhs) const { return (lhs.file_name < rhs.file_name); }
bool operator()(const BackupFileInfo * lhs, const BackupFileInfo * rhs) const { return (lhs->file_name < rhs->file_name); }
};
struct EqualByFileName
{
bool operator()(const BackupFileInfo & lhs, const BackupFileInfo & rhs) const { return (lhs.file_name == rhs.file_name); }
bool operator()(const BackupFileInfo * lhs, const BackupFileInfo * rhs) const { return (lhs->file_name == rhs->file_name); }
};
struct LessBySizeOrChecksum
{
bool operator()(const BackupFileInfo & lhs, const BackupFileInfo & rhs) const
{
return (lhs.size < rhs.size) || (lhs.size == rhs.size && lhs.checksum < rhs.checksum);
}
};
/// Note: this format doesn't allow to parse data back.
/// Must be used only for debugging purposes.
String describe() const;
};
using BackupFileInfos = std::vector<BackupFileInfo>;
/// Builds a BackupFileInfo for a specified backup entry.
BackupFileInfo buildFileInfoForBackupEntry(const String & file_name, const BackupEntryPtr & backup_entry, const BackupPtr & base_backup, const ReadSettings & read_settings, Poco::Logger * log);
/// Builds a vector of BackupFileInfos for specified backup entries.
BackupFileInfos buildFileInfosForBackupEntries(const BackupEntries & backup_entries, const BackupPtr & base_backup, const ReadSettings & read_settings, ThreadPool & thread_pool);
}
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