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109 lines
2.7 KiB
C++
109 lines
2.7 KiB
C++
#pragma once
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#include <Core/Field.h>
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#include <common/types.h>
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#include <Parsers/IAST.h>
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#include <Storages/IStorage_fwd.h>
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#include <optional>
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#include <vector>
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namespace DB
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{
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class ASTAlterCommand;
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class Pipe;
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struct PartitionCommand
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{
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enum Type
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{
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ATTACH_PARTITION,
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MOVE_PARTITION,
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DROP_PARTITION,
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DROP_DETACHED_PARTITION,
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FETCH_PARTITION,
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FREEZE_ALL_PARTITIONS,
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FREEZE_PARTITION,
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REPLACE_PARTITION,
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};
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Type type;
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ASTPtr partition;
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/// true for DETACH PARTITION.
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bool detach = false;
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/// true for ATTACH PART and DROP DETACHED PART (and false for PARTITION)
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bool part = false;
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/// For ATTACH PARTITION partition FROM db.table
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String from_database;
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String from_table;
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bool replace = true;
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/// For MOVE PARTITION
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String to_database;
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String to_table;
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/// For FETCH PARTITION - path in ZK to the shard, from which to download the partition.
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String from_zookeeper_path;
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/// For FREEZE PARTITION
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String with_name;
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enum MoveDestinationType
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{
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DISK,
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VOLUME,
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TABLE,
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};
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std::optional<MoveDestinationType> move_destination_type;
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String move_destination_name;
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static std::optional<PartitionCommand> parse(const ASTAlterCommand * command);
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/// Convert type of the command to string (use not only type, but also
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/// different flags)
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std::string typeToString() const;
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};
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using PartitionCommands = std::vector<PartitionCommand>;
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/// Result of exectuin of a single partition commands. Partition commands quite
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/// different, so some fields will be empty for some commands. Currently used in
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/// ATTACH and FREEZE commands.
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struct PartitionCommandResultInfo
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{
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/// Command type, always filled
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String command_type;
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/// Partition id, always filled
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String partition_id;
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/// Part name, always filled
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String part_name;
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/// Part name in /detached directory, filled in ATTACH
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String old_part_name;
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/// Absolute path to backup directory, filled in FREEZE
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String backup_path;
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/// Absolute path part backup, filled in FREEZE
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String part_backup_path;
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/// Name of the backup (specified by user or increment value), filled in
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/// FREEZE
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String backup_name;
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};
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using PartitionCommandsResultInfo = std::vector<PartitionCommandResultInfo>;
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/// Convert partition comands result to Source from single Chunk, which will be
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/// used to print info to the user. Tries to create narrowest table for given
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/// results. For example, if all commands were FREEZE commands, than
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/// old_part_name column will be absent.
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Pipe convertCommandsResultToSource(const PartitionCommandsResultInfo & commands_result);
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}
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