ClickHouse/programs/local/LocalServer.h

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#pragma once
#include <filesystem>
#include <memory>
#include <optional>
#include <Core/Settings.h>
#include <Interpreters/Context.h>
#include <loggers/Loggers.h>
#include <Poco/Util/Application.h>
#include <Common/ProgressBar.h>
namespace DB
{
/// Lightweight Application for clickhouse-local
/// No networking, no extra configs and working directories, no pid and status files, no dictionaries, no logging.
/// Quiet mode by default
class LocalServer : public Poco::Util::Application, public Loggers
{
public:
LocalServer();
void initialize(Poco::Util::Application & self) override;
int main(const std::vector<std::string> & args) override;
void init(int argc, char ** argv);
~LocalServer() override;
private:
/** Composes CREATE subquery based on passed arguments (--structure --file --table and --input-format)
* This query will be executed first, before queries passed through --query argument
* Returns empty string if it cannot compose that query.
*/
std::string getInitialCreateTableQuery();
void tryInitPath();
void applyCmdOptions(ContextPtr context);
void applyCmdSettings(ContextPtr context);
void processQueries();
void setupUsers();
void cleanup();
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protected:
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SharedContextHolder shared_context;
ContextPtr global_context;
/// Settings specified via command line args
Settings cmd_settings;
ProgressBar progress_bar;
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Progress progress;
Stopwatch watch;
std::optional<std::filesystem::path> temporary_directory_to_delete;
};
}