ClickHouse/dbms/include/DB/Storages/System/StorageSystemGraphite.h

#pragma once

#include <DB/Storages/IStorage.h>
#include <ext/shared_ptr_helper.hpp>

namespace DB
{

/// Provides information about graphite configuration.
class StorageSystemGraphite
	: private ext::shared_ptr_helper<StorageSystemGraphite>
	, public IStorage
{
	friend class ext::shared_ptr_helper<StorageSystemGraphite>;

public:
	static StoragePtr create(const std::string & name_);

	std::string getName() const override { return "SystemGraphite"; }
	std::string getTableName() const override { return name; }
	const NamesAndTypesList & getColumnsListImpl() const override { return columns; }

	BlockInputStreams read(
		const Names & column_names,
		ASTPtr query,
		const Context & context,
		const Settings & settings,
		QueryProcessingStage::Enum & processed_stage,
		size_t max_block_size = DEFAULT_BLOCK_SIZE,
		unsigned threads = 1) override;

private:
	const std::string name;
	NamesAndTypesList columns;

	StorageSystemGraphite(const std::string & name_);
};

}