mirror of
https://github.com/ClickHouse/ClickHouse.git
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79 lines
2.5 KiB
C++
79 lines
2.5 KiB
C++
#pragma once
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#include <Client/ClientBase.h>
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#include <Client/LocalConnection.h>
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#include <Common/ProgressIndication.h>
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#include <Common/StatusFile.h>
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#include <Common/InterruptListener.h>
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#include <loggers/Loggers.h>
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#include <Core/Settings.h>
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#include <Interpreters/Context.h>
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#include <filesystem>
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#include <memory>
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#include <optional>
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namespace DB
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{
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/// Lightweight Application for clickhouse-local
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/// No networking, no extra configs and working directories, no pid and status files, no dictionaries, no logging.
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/// Quiet mode by default
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class LocalServer : public ClientBase, public Loggers
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{
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public:
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LocalServer() = default;
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void initialize(Poco::Util::Application & self) override;
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protected:
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void processSingleQuery(const String & query_to_execute, ASTPtr parsed_query) override;
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bool processMultiQuery(const String & all_queries_text) override;
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void processError(const String & query) const override;
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void loadSuggestionData(Suggest &) override;
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String getQueryTextPrefix() override;
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void printHelpMessage(const OptionsDescription & options_description) override;
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void readArguments(int argc, char ** argv, Arguments & common_arguments, std::vector<Arguments> &) override;
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void addAndCheckOptions(OptionsDescription & options_description, po::variables_map & options, Arguments & arguments) override;
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void processOptions(const OptionsDescription & options_description,
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const CommandLineOptions & options,
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const std::vector<Arguments> &) override;
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void processConfig() override;
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int mainImpl() override;
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private:
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/** Composes CREATE subquery based on passed arguments (--structure --file --table and --input-format)
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* This query will be executed first, before queries passed through --query argument
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* Returns empty string if it cannot compose that query.
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*/
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std::string getInitialCreateTableQuery();
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void tryInitPath();
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void setupUsers();
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void cleanup();
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void applyCmdOptions(ContextMutablePtr context);
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void applyCmdSettings(ContextMutablePtr context);
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std::optional<StatusFile> status;
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void processQuery(const String & query, std::exception_ptr exception);
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std::optional<std::filesystem::path> temporary_directory_to_delete;
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/// Used to cancel query on ctrl-c. Lives for single query execution.
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std::optional<InterruptListener> interrupt_listener;
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std::mutex interrupt_listener_mutex;
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/// Was currently executed query cancelled by ctrl-c in interactive mode?
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bool cancelled = true;
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};
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}
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