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#pragma once
#include "clickhouse_config.h"
#include <Disks/ObjectStorages/IObjectStorage.h>
namespace Poco
{
class Logger;
}
namespace DB
{
/// Treat local disk as an object storage (for interface compatibility).
class LocalObjectStorage : public IObjectStorage
{
public:
LocalObjectStorage();
DataSourceDescription getDataSourceDescription() const override { return data_source_description; }
std::string getName() const override { return "LocalObjectStorage"; }
bool exists(const StoredObject & object) const override;
std::unique_ptr<ReadBufferFromFileBase> readObject( /// NOLINT
const StoredObject & object,
const ReadSettings & read_settings = ReadSettings{},
std::optional<size_t> read_hint = {},
std::optional<size_t> file_size = {}) const override;
std::unique_ptr<ReadBufferFromFileBase> readObjects( /// NOLINT
const StoredObjects & objects,
const ReadSettings & read_settings = ReadSettings{},
std::optional<size_t> read_hint = {},
std::optional<size_t> file_size = {}) const override;
/// Open the file for write and return WriteBufferFromFileBase object.
std::unique_ptr<WriteBufferFromFileBase> writeObject( /// NOLINT
const StoredObject & object,
WriteMode mode,
std::optional<ObjectAttributes> attributes = {},
size_t buf_size = DBMS_DEFAULT_BUFFER_SIZE,
const WriteSettings & write_settings = {}) override;
void removeObject(const StoredObject & object) override;
void removeObjects(const StoredObjects & objects) override;
void removeObjectIfExists(const StoredObject & object) override;
void removeObjectsIfExist(const StoredObjects & objects) override;
ObjectMetadata getObjectMetadata(const std::string & path) const override;
void copyObject( /// NOLINT
const StoredObject & object_from,
const StoredObject & object_to,
std::optional<ObjectAttributes> object_to_attributes = {}) override;
void shutdown() override;
void startup() override;
void applyNewSettings(
const Poco::Util::AbstractConfiguration & config,
const std::string & config_prefix,
ContextPtr context) override;
String getObjectsNamespace() const override { return ""; }
std::unique_ptr<IObjectStorage> cloneObjectStorage(
const std::string & new_namespace,
const Poco::Util::AbstractConfiguration & config,
const std::string & config_prefix,
ContextPtr context) override;
std::string generateBlobNameForPath(const std::string & path) override;
bool isRemote() const override { return false; }
ReadSettings patchSettings(const ReadSettings & read_settings) const override;
private:
Poco::Logger * log;
DataSourceDescription data_source_description;
};
}
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