services/log/Log_service.cc

0001 // Copyright 2022, Dmitry Romanov
0002 // Subject to the terms in the LICENSE file found in the top-level directory.
0003 //
0004 //
0005 #include "Log_service.h"
0006
0007 #include <JANA/JException.h>
0008 #include <spdlog/spdlog.h>
0009 #include <exception>
0010
0011 #include "extensions/spdlog/SpdlogExtensions.h"
0012
0013
0014 Log_service::Log_service(JApplication *app) {
0015     // Here one could add centralized documentation for spdlog::default_logger()
0016     // All subsequent loggers are cloned from the spdlog::default_logger()
0017     m_application = app;
0018
0019     m_log_level_str = "info";
0020     m_application->SetDefaultParameter("eicrecon:LogLevel", m_log_level_str, "log_level: trace, debug, info, warn, error, critical, off");
0021     spdlog::default_logger()->set_level(eicrecon::ParseLogLevel(m_log_level_str));
0022
0023     m_log_format_str = "[%n] [%^%l%$] %v";
0024     m_application->SetDefaultParameter("eicrecon:LogFormat", m_log_level_str, "spdlog pattern string");
0025     spdlog::set_pattern(m_log_format_str);
0026 }
0027
0028
0029 // Virtual destructor implementation to pin vtable and typeinfo to this
0030 // translation unit
0031 Log_service::~Log_service() {};
0032
0033
0034 std::shared_ptr<spdlog::logger> Log_service::logger(
0035         const std::string &name,
0036         const std::optional<level> default_level) {
0037
0038     try {
0039         std::lock_guard<std::recursive_mutex> locker(m_lock);
0040
0041         // Try to get existing logger
0042         auto logger = spdlog::get(name);
0043         if(!logger) {
0044             // or create a new one with current configuration
0045             logger = spdlog::default_logger()->clone(name);
0046
0047             // Set log level for this named logger allowing user to specify as config. parameter
0048             // e.g. EcalEndcapPRecHits:LogLevel
0049             std::string log_level_str = default_level ? eicrecon::LogLevelToString(default_level.value()) : m_log_level_str;
0050             m_application->SetDefaultParameter(name+":LogLevel", log_level_str, "log_level for "+name+": trace, debug, info, warn, error, critical, off");
0051             logger->set_level(eicrecon::ParseLogLevel(log_level_str));
0052         }
0053         return logger;
0054     }
0055     catch(const std::exception & exception) {
0056         throw JException(exception.what());
0057     }
0058 }
0059
0060 Log_service::level Log_service::getDefaultLevel() {return spdlog::default_logger()->level();}
0061
0062 std::string Log_service::getDefaultLevelStr() {return eicrecon::LogLevelToString(getDefaultLevel());}