ClickHouse/src/Storages/MergeTree/PartMetadataManagerOrdinary.cpp

Ignoring revisions in .git-blame-ignore-revs. Click here to bypass and see the normal blame view.

39 lines
1.1 KiB
C++
Raw Normal View History

#include "PartMetadataManagerOrdinary.h"
#include <IO/ReadBufferFromFileBase.h>
2022-05-29 07:28:02 +00:00
#include <Compression/CompressedReadBufferFromFile.h>
#include <Disks/IDisk.h>
#include <Storages/MergeTree/IMergeTreeDataPart.h>
namespace DB
{
2022-04-22 16:58:09 +00:00
static std::unique_ptr<ReadBufferFromFileBase> openForReading(const DataPartStoragePtr & data_part_storage, const String & path)
{
2022-04-22 16:58:09 +00:00
size_t file_size = data_part_storage->getFileSize(path);
return data_part_storage->readFile(path, ReadSettings().adjustBufferSize(file_size), file_size, std::nullopt);
}
PartMetadataManagerOrdinary::PartMetadataManagerOrdinary(const IMergeTreeDataPart * part_) : IPartMetadataManager(part_)
{
}
2022-05-29 07:28:02 +00:00
std::unique_ptr<ReadBuffer> PartMetadataManagerOrdinary::read(const String & file_name) const
{
auto res = openForReading(part->data_part_storage, file_name);
2022-05-29 07:28:02 +00:00
if (isCompressedFromFileName(file_name))
return std::make_unique<CompressedReadBufferFromFile>(std::move(res));
return res;
}
bool PartMetadataManagerOrdinary::exists(const String & file_name) const
{
2022-04-22 16:58:09 +00:00
return part->data_part_storage->exists(file_name);
}
}