mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-19 04:42:37 +00:00
45 lines
1.3 KiB
C++
45 lines
1.3 KiB
C++
#pragma once
|
|
|
|
#include <Storages/MergeTree/MergeTreePartInfo.h>
|
|
#include <mutex>
|
|
#include <common/DateLUT.h>
|
|
#include <Core/Types.h>
|
|
#include <map>
|
|
|
|
|
|
namespace DB
|
|
{
|
|
|
|
/** Supports multiple names of active parts of data.
|
|
* Repeats part of the MergeTreeData functionality.
|
|
* TODO: generalize with MergeTreeData. It is possible to leave this class approximately as is and use it from MergeTreeData.
|
|
* Then in MergeTreeData you can make map<String, DataPartPtr> data_parts and all_data_parts.
|
|
*/
|
|
class ActiveDataPartSet
|
|
{
|
|
public:
|
|
ActiveDataPartSet(MergeTreeDataFormatVersion format_version_) : format_version(format_version_) {}
|
|
ActiveDataPartSet(MergeTreeDataFormatVersion format_version_, const Strings & names);
|
|
|
|
void add(const String & name);
|
|
|
|
/// If not found, returns an empty string.
|
|
String getContainingPart(const String & name) const;
|
|
|
|
Strings getParts() const; /// In ascending order of the partition_id and block number.
|
|
|
|
size_t size() const;
|
|
|
|
private:
|
|
MergeTreeDataFormatVersion format_version;
|
|
|
|
mutable std::mutex mutex;
|
|
std::map<MergeTreePartInfo, String> part_info_to_name;
|
|
|
|
/// Do not block mutex.
|
|
void addImpl(const String & name);
|
|
String getContainingPartImpl(const MergeTreePartInfo & part_info) const;
|
|
};
|
|
|
|
}
|