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#pragma once
#include <base/types.h>
#include <Disks/IDisk.h>
#include <Storages/MergeTree/MergeTreePartInfo.h>
#include <Storages/MutationCommands.h>
#include <Common/TransactionID.h>
namespace DB
{
class IBackupEntry;
/// A mutation entry for non-replicated MergeTree storage engines.
/// Stores information about mutation in file mutation_*.txt.
struct MergeTreeMutationEntry
{
time_t create_time = 0;
MutationCommands commands;
DiskPtr disk;
String path_prefix;
String file_name;
bool is_temp = false;
UInt64 block_number = 0;
String latest_failed_part;
MergeTreePartInfo latest_failed_part_info;
time_t latest_fail_time = 0;
String latest_fail_reason;
/// ID of transaction which has created mutation.
TransactionID tid = Tx::PrehistoricTID;
/// CSN of transaction which has created mutation
/// or UnknownCSN if it's not committed (yet) or RolledBackCSN if it's rolled back or PrehistoricCSN if there is no transaction.
CSN csn = Tx::UnknownCSN;
/// Create a new entry and write it to a temporary file.
MergeTreeMutationEntry(MutationCommands commands_, DiskPtr disk, const String & path_prefix_, UInt64 tmp_number,
const TransactionID & tid_, const WriteSettings & settings);
MergeTreeMutationEntry(const MergeTreeMutationEntry &) = delete;
MergeTreeMutationEntry(MergeTreeMutationEntry &&) = default;
/// Commit entry and rename it to a permanent file.
void commit(UInt64 block_number_);
void removeFile();
void writeCSN(CSN csn_);
std::shared_ptr<const IBackupEntry> backup() const;
static String versionToFileName(UInt64 block_number_);
static UInt64 tryParseFileName(const String & file_name_);
static UInt64 parseFileName(const String & file_name_);
/// Load an existing entry.
MergeTreeMutationEntry(DiskPtr disk_, const String & path_prefix_, const String & file_name_);
~MergeTreeMutationEntry();
};
}
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