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121 lines
9.0 KiB
C++
121 lines
9.0 KiB
C++
#pragma once
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/// Macros for convenient usage of Poco logger.
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#include <unistd.h>
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#include <fmt/format.h>
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#include <Poco/Logger.h>
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#include <Poco/Message.h>
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#include <Common/CurrentThread.h>
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#include <Common/ProfileEvents.h>
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#include <Common/LoggingFormatStringHelpers.h>
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namespace Poco { class Logger; }
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#define LogToStr(x, y) std::make_unique<LogToStrImpl>(x, y)
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#define LogFrequencyLimiter(x, y) std::make_unique<LogFrequencyLimiterIml>(x, y)
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using LogSeriesLimiterPtr = std::shared_ptr<LogSeriesLimiter>;
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namespace
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{
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[[maybe_unused]] const ::Poco::Logger * getLogger(const ::Poco::Logger * logger) { return logger; }
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[[maybe_unused]] const ::Poco::Logger * getLogger(const std::atomic<::Poco::Logger *> & logger) { return logger.load(); }
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[[maybe_unused]] std::unique_ptr<LogToStrImpl> getLogger(std::unique_ptr<LogToStrImpl> && logger) { return logger; }
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[[maybe_unused]] std::unique_ptr<LogFrequencyLimiterIml> getLogger(std::unique_ptr<LogFrequencyLimiterIml> && logger) { return logger; }
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[[maybe_unused]] LogSeriesLimiterPtr getLogger(LogSeriesLimiterPtr & logger) { return logger; }
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}
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#define LOG_IMPL_FIRST_ARG(X, ...) X
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/// Copy-paste from contrib/libpq/include/c.h
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/// There's no easy way to count the number of arguments without evaluating these arguments...
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#define CH_VA_ARGS_NARGS(...) \
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CH_VA_ARGS_NARGS_(__VA_ARGS__, \
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63,62,61,60, \
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59,58,57,56,55,54,53,52,51,50, \
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49,48,47,46,45,44,43,42,41,40, \
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39,38,37,36,35,34,33,32,31,30, \
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29,28,27,26,25,24,23,22,21,20, \
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19,18,17,16,15,14,13,12,11,10, \
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9, 8, 7, 6, 5, 4, 3, 2, 1, 0)
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#define CH_VA_ARGS_NARGS_( \
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_01,_02,_03,_04,_05,_06,_07,_08,_09,_10, \
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_11,_12,_13,_14,_15,_16,_17,_18,_19,_20, \
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_21,_22,_23,_24,_25,_26,_27,_28,_29,_30, \
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_31,_32,_33,_34,_35,_36,_37,_38,_39,_40, \
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_41,_42,_43,_44,_45,_46,_47,_48,_49,_50, \
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_51,_52,_53,_54,_55,_56,_57,_58,_59,_60, \
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_61,_62,_63, N, ...) \
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(N)
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#define LINE_NUM_AS_STRING_IMPL2(x) #x
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#define LINE_NUM_AS_STRING_IMPL(x) LINE_NUM_AS_STRING_IMPL2(x)
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#define LINE_NUM_AS_STRING LINE_NUM_AS_STRING_IMPL(__LINE__)
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#define MESSAGE_FOR_EXCEPTION_ON_LOGGING "Failed to write a log message: " __FILE__ ":" LINE_NUM_AS_STRING "\n"
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/// Logs a message to a specified logger with that level.
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/// If more than one argument is provided,
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/// the first argument is interpreted as a template with {}-substitutions
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/// and the latter arguments are treated as values to substitute.
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/// If only one argument is provided, it is treated as a message without substitutions.
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#define LOG_IMPL(logger, priority, PRIORITY, ...) do \
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{ \
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auto _logger = ::getLogger(logger); \
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const bool _is_clients_log = (DB::CurrentThread::getGroup() != nullptr) && \
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(DB::CurrentThread::get().getClientLogsLevel() >= (priority)); \
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if (!_is_clients_log && !_logger->is((PRIORITY))) \
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break; \
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\
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try \
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{ \
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ProfileEvents::incrementForLogMessage(PRIORITY); \
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auto _channel = _logger->getChannel(); \
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if (!_channel) \
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break; \
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\
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constexpr size_t _nargs = CH_VA_ARGS_NARGS(__VA_ARGS__); \
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using LogTypeInfo = FormatStringTypeInfo<std::decay_t<decltype(LOG_IMPL_FIRST_ARG(__VA_ARGS__))>>; \
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\
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std::string_view _format_string; \
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std::string _formatted_message; \
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\
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if constexpr (LogTypeInfo::is_static) \
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{ \
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formatStringCheckArgsNum(LOG_IMPL_FIRST_ARG(__VA_ARGS__), _nargs - 1); \
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_format_string = ConstexprIfsAreNotIfdefs<LogTypeInfo::is_static>::getStaticFormatString(LOG_IMPL_FIRST_ARG(__VA_ARGS__)); \
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} \
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\
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constexpr bool is_preformatted_message = !LogTypeInfo::is_static && LogTypeInfo::has_format; \
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if constexpr (is_preformatted_message) \
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{ \
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static_assert(_nargs == 1 || !is_preformatted_message); \
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ConstexprIfsAreNotIfdefs<is_preformatted_message>::getPreformatted(LOG_IMPL_FIRST_ARG(__VA_ARGS__)).apply(_formatted_message, _format_string); \
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} \
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else \
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{ \
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_formatted_message = _nargs == 1 ? firstArg(__VA_ARGS__) : fmt::format(__VA_ARGS__); \
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} \
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\
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std::string _file_function = __FILE__ "; "; \
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_file_function += __PRETTY_FUNCTION__; \
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Poco::Message _poco_message(_logger->name(), std::move(_formatted_message), \
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(PRIORITY), _file_function.c_str(), __LINE__, _format_string); \
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_channel->log(_poco_message); \
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} \
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catch (...) \
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{ \
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::write(STDERR_FILENO, static_cast<const void *>(MESSAGE_FOR_EXCEPTION_ON_LOGGING), sizeof(MESSAGE_FOR_EXCEPTION_ON_LOGGING)); \
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} \
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} while (false)
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#define LOG_TEST(logger, ...) LOG_IMPL(logger, DB::LogsLevel::test, Poco::Message::PRIO_TEST, __VA_ARGS__)
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#define LOG_TRACE(logger, ...) LOG_IMPL(logger, DB::LogsLevel::trace, Poco::Message::PRIO_TRACE, __VA_ARGS__)
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#define LOG_DEBUG(logger, ...) LOG_IMPL(logger, DB::LogsLevel::debug, Poco::Message::PRIO_DEBUG, __VA_ARGS__)
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#define LOG_INFO(logger, ...) LOG_IMPL(logger, DB::LogsLevel::information, Poco::Message::PRIO_INFORMATION, __VA_ARGS__)
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#define LOG_WARNING(logger, ...) LOG_IMPL(logger, DB::LogsLevel::warning, Poco::Message::PRIO_WARNING, __VA_ARGS__)
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#define LOG_ERROR(logger, ...) LOG_IMPL(logger, DB::LogsLevel::error, Poco::Message::PRIO_ERROR, __VA_ARGS__)
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#define LOG_FATAL(logger, ...) LOG_IMPL(logger, DB::LogsLevel::error, Poco::Message::PRIO_FATAL, __VA_ARGS__)
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