#include "ODBCBridge.h" #include "HandlerFactory.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include namespace DB { namespace ErrorCodes { extern const int ARGUMENT_OUT_OF_BOUND; } namespace { Poco::Net::SocketAddress makeSocketAddress(const std::string & host, UInt16 port, Poco::Logger * log) { Poco::Net::SocketAddress socket_address; try { socket_address = Poco::Net::SocketAddress(host, port); } catch (const Poco::Net::DNSException & e) { const auto code = e.code(); if (code == EAI_FAMILY #if defined(EAI_ADDRFAMILY) || code == EAI_ADDRFAMILY #endif ) { LOG_ERROR(log, "Cannot resolve listen_host (" << host << "), error " << e.code() << ": " << e.message() << ". " "If it is an IPv6 address and your host has disabled IPv6, then consider to " "specify IPv4 address to listen in element of configuration " "file. Example: 0.0.0.0"); } throw; } return socket_address; } Poco::Net::SocketAddress socketBindListen(Poco::Net::ServerSocket & socket, const std::string & host, UInt16 port, Poco::Logger * log) { auto address = makeSocketAddress(host, port, log); #if POCO_VERSION < 0x01080000 socket.bind(address, /* reuseAddress = */ true); #else socket.bind(address, /* reuseAddress = */ true, /* reusePort = */ false); #endif socket.listen(/* backlog = */ 64); return address; } } void ODBCBridge::handleHelp(const std::string &, const std::string &) { Poco::Util::HelpFormatter helpFormatter(options()); helpFormatter.setCommand(commandName()); helpFormatter.setHeader("HTTP-proxy for odbc requests"); helpFormatter.setUsage("--http-port "); helpFormatter.format(std::cerr); stopOptionsProcessing(); } void ODBCBridge::defineOptions(Poco::Util::OptionSet & options) { options.addOption(Poco::Util::Option("http-port", "", "port to listen").argument("http-port", true).binding("http-port")); options.addOption( Poco::Util::Option("listen-host", "", "hostname to listen, default localhost").argument("listen-host").binding("listen-host")); options.addOption( Poco::Util::Option("http-timeout", "", "http timout for socket, default 1800").argument("http-timeout").binding("http-timeout")); options.addOption(Poco::Util::Option("max-server-connections", "", "max connections to server, default 1024") .argument("max-server-connections") .binding("max-server-connections")); options.addOption(Poco::Util::Option("keep-alive-timeout", "", "keepalive timeout, default 10") .argument("keep-alive-timeout") .binding("keep-alive-timeout")); options.addOption(Poco::Util::Option("log-level", "", "sets log level, default info").argument("log-level").binding("logger.level")); options.addOption( Poco::Util::Option("log-path", "", "log path for all logs, default console").argument("log-path").binding("logger.log")); options.addOption(Poco::Util::Option("err-log-path", "", "err log path for all logs, default no") .argument("err-log-path") .binding("logger.errorlog")); using Me = std::decay_t; options.addOption(Poco::Util::Option("help", "", "produce this help message") .binding("help") .callback(Poco::Util::OptionCallback(this, &Me::handleHelp))); ServerApplication::defineOptions(options); /// Don't need complex BaseDaemon's .xml config } void ODBCBridge::initialize(Application & self) { BaseDaemon::closeFDs(); is_help = config().has("help"); if (is_help) return; config().setString("logger", "ODBCBridge"); buildLoggers(config()); log = &logger(); hostname = config().getString("listen-host", "localhost"); port = config().getUInt("http-port"); if (port > 0xFFFF) throw Exception("Out of range 'http-port': " + std::to_string(port), ErrorCodes::ARGUMENT_OUT_OF_BOUND); http_timeout = config().getUInt("http-timeout", DEFAULT_HTTP_READ_BUFFER_TIMEOUT); max_server_connections = config().getUInt("max-server-connections", 1024); keep_alive_timeout = config().getUInt("keep-alive-timeout", 10); initializeTerminationAndSignalProcessing(); ServerApplication::initialize(self); } void ODBCBridge::uninitialize() { BaseDaemon::uninitialize(); } int ODBCBridge::main(const std::vector & /*args*/) { if (is_help) return Application::EXIT_OK; LOG_INFO(log, "Starting up"); Poco::Net::ServerSocket socket; auto address = socketBindListen(socket, hostname, port, log); socket.setReceiveTimeout(http_timeout); socket.setSendTimeout(http_timeout); Poco::ThreadPool server_pool(3, max_server_connections); Poco::Net::HTTPServerParams::Ptr http_params = new Poco::Net::HTTPServerParams; http_params->setTimeout(http_timeout); http_params->setKeepAliveTimeout(keep_alive_timeout); context = std::make_shared(Context::createGlobal()); context->setGlobalContext(*context); auto server = Poco::Net::HTTPServer( new HandlerFactory("ODBCRequestHandlerFactory-factory", keep_alive_timeout, context), server_pool, socket, http_params); server.start(); LOG_INFO(log, "Listening http://" + address.toString()); SCOPE_EXIT({ LOG_DEBUG(log, "Received termination signal."); LOG_DEBUG(log, "Waiting for current connections to close."); server.stop(); for (size_t count : ext::range(1, 6)) { if (server.currentConnections() == 0) break; LOG_DEBUG(log, "Waiting for " << server.currentConnections() << " connections, try " << count); std::this_thread::sleep_for(std::chrono::milliseconds(1000)); } }); waitForTerminationRequest(); return Application::EXIT_OK; } } int mainEntryClickHouseODBCBridge(int argc, char ** argv) { DB::ODBCBridge app; try { return app.run(argc, argv); } catch (...) { std::cerr << DB::getCurrentExceptionMessage(true) << "\n"; auto code = DB::getCurrentExceptionCode(); return code ? code : 1; } }