ClickHouse/programs/library-bridge/SharedLibraryHandlerFactory.h
2021-03-24 19:32:31 +00:00

38 lines
1.0 KiB
C++

#pragma once
#include "SharedLibraryHandler.h"
#include <unordered_map>
#include <mutex>
namespace DB
{
/// Each library dictionary source has unique UUID. When clone() method is called, a new UUID is generated.
/// There is a unique mapping from diciotnary UUID to sharedLibraryHandler.
class SharedLibraryHandlerFactory final : private boost::noncopyable
{
public:
static SharedLibraryHandlerFactory & instance();
SharedLibraryHandlerPtr get(const std::string & dictionary_id);
void create(
const std::string & dictionary_id,
const std::string & library_path,
const std::vector<std::string> & library_settings,
const Block & sample_block,
const std::vector<std::string> & attributes_names);
void clone(const std::string & from_dictionary_id, const std::string & to_dictionary_id);
void remove(const std::string & dictionary_id);
private:
/// map: dict_id -> sharedLibraryHandler
std::unordered_map<std::string, SharedLibraryHandlerPtr> library_handlers;
std::mutex mutex;
};
}