fix: reduce scope of macros

src/iguana/algorithms/clas12/EventBuilderFilter/Algorithm.cc

@@ -1,11 +1,13 @@
 #include "Algorithm.h"
+#include "iguana/services/NewLogger.h"
 
 namespace iguana::clas12 {
 
   REGISTER_IGUANA_ALGORITHM(EventBuilderFilter);
 
   void EventBuilderFilter::Start(hipo::banklist& banks)
   {
+    m_level = LogLevel::trace; // FIXME
 
     // define options, their default values, and cache them
     ParseYAMLConfig();
@@ -53,7 +55,7 @@ namespace iguana::clas12 {
 
   void EventBuilderFilter::Stop()
   {
-    NEWLOG("test newlog {}", 7);
+    WARN("test newlog {}", 7);
   }
 
 }

src/iguana/services/NewLogger.h

@@ -0,0 +1,15 @@
+#define WARN(fmt_str, ...) \
+  if(m_level <= LogLevel::warn) \
+    PrintLog( \
+        stderr, \
+        fmt::format("{}", fmt::styled(fmt::format("[warn] [{}]", m_name), fmt::emphasis::bold | fmt::fg(fmt::terminal_color::magenta))), \
+        FMT_STRING(fmt_str), \
+        __VA_ARGS__);
+
+#define ERROR(fmt_str, ...) \
+  if(m_level <= LogLevel::error) \
+    PrintLog( \
+        stderr, \
+        fmt::format("{}", fmt::styled(fmt::format("[error] [{}]", m_name), fmt::emphasis::bold | fmt::fg(fmt::terminal_color::red))), \
+        FMT_STRING(fmt_str), \
+        __VA_ARGS__);

src/iguana/services/Object.h

@@ -14,6 +14,24 @@ namespace iguana {
 
     public:
 
+      /// These are the available log levels, from lowest to highest:
+      /// - `trace`: the most verbose level, used for fine-grained printouts for each event
+      /// - `debug`: less verbose printout, expected to be less frequent than `trace`
+      /// - `info`: the least verbose printout; this is the default level
+      /// - `quiet`: use this level to only allow warnings and errors, silencing all other printouts
+      /// - `warn`: an issue that may or may not be critical
+      /// - `error`: an issue that is likely critical
+      /// - `silent`: use this level to silence **all** printouts (use it at your own risk!)
+      enum LogLevel {
+        trace,
+        debug,
+        info,
+        quiet,
+        warn,
+        error,
+        silent
+      };
+
       /// @param name the name of this object
       Object(std::string_view name = "");
       ~Object() {}
@@ -45,25 +63,22 @@ namespace iguana {
       /// The name of this object
       std::string m_name;
 
+      /// The current log level for this instance
+      LogLevel m_level;
+
       /// `Logger` instance for this object
       std::unique_ptr<Logger> m_log;
 
-      void PrintLogV(std::string_view name, fmt::string_view fmt_str, fmt::format_args fmt_args)
+      void PrintLogV(FILE* out, std::string_view prefix, fmt::string_view fmt_str, fmt::format_args fmt_args)
       {
-        fmt::print("<{}> {}\n", name, fmt::vformat(fmt_str, fmt_args));
+        fmt::print(out, "{} {}\n", prefix, fmt::vformat(fmt_str, fmt_args));
       }
 
       template <typename... ARG_TYPES>
-      void PrintLog(std::string_view name, fmt::format_string<ARG_TYPES...> fmt_str, ARG_TYPES&&... fmt_args)
+      void PrintLog(FILE* out, std::string_view prefix, fmt::format_string<ARG_TYPES...> fmt_str, ARG_TYPES&&... fmt_args)
       {
-        PrintLogV(name, fmt_str, fmt::make_format_args(fmt_args...));
+        PrintLogV(out, prefix, fmt_str, fmt::make_format_args(fmt_args...));
       }
 
   };
 }
-
-#define NEWLOG(fmt_str, ...) \
-  PrintLog( \
-      fmt::format("[{}]", fmt::styled(m_name, fmt::emphasis::bold | fmt::fg(fmt::terminal_color::magenta))), \
-      FMT_STRING(fmt_str), \
-      __VA_ARGS__);