ClickHouse/dbms/src/Storages/System/StorageSystemReplicas.h

37 lines
848 B
C++

#pragma once
#include <ext/shared_ptr_helper.h>
#include <Storages/IStorage.h>
namespace DB
{
class Context;
/** Implements `replicas` system table, which provides information about the status of the replicated tables.
*/
class StorageSystemReplicas : public ext::shared_ptr_helper<StorageSystemReplicas>, public IStorage
{
public:
std::string getName() const override { return "SystemReplicas"; }
std::string getTableName() const override { return name; }
BlockInputStreams read(
const Names & column_names,
const SelectQueryInfo & query_info,
const Context & context,
QueryProcessingStage::Enum processed_stage,
size_t max_block_size,
unsigned num_streams) override;
private:
const std::string name;
protected:
StorageSystemReplicas(const std::string & name_);
};
}