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#pragma once
#include <Storages/System/IStorageSystemOneBlock.h>
#include <Interpreters/Cache/FileCache_fwd_internal.h>
namespace DB
{
/**
* Usgae example. How to get mapping from local paths to remote paths:
* SELECT
* cache_path,
* cache_hits,
* remote_path,
* local_path,
* file_segment_range_begin,
* file_segment_range_end,
* size,
* state
* FROM
* (
* SELECT
* arrayJoin(cache_paths) AS cache_path,
* local_path,
* remote_path
* FROM system.remote_data_paths
* ) AS data_paths
* INNER JOIN system.filesystem_cache AS caches ON data_paths.cache_path = caches.cache_path
* FORMAT Vertical
*/
class StorageSystemFilesystemCache final : public IStorageSystemOneBlock<StorageSystemFilesystemCache>
{
public:
explicit StorageSystemFilesystemCache(const StorageID & table_id_);
std::string getName() const override { return "SystemFilesystemCache"; }
static NamesAndTypesList getNamesAndTypes();
protected:
void fillData(MutableColumns & res_columns, ContextPtr context, const SelectQueryInfo & query_info) const override;
};
}
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