add output in permanent file

Author: ctapmex

src/utils/LogFileSink.cpp

@@ -6,16 +6,23 @@
 
 static const std::string file_name_time_formatted = "%Y%m%d-%H%M%S";
 
-LogFileSink::LogFileSink(const std::string &log_prefix, const std::string &log_directory, const bool show_microseconds_)
-  : _log_file_with_path(log_directory), _log_prefix_backup(log_prefix), _outptr(new std::ofstream), show_microseconds(show_microseconds_)
+LogFileSink::LogFileSink(const std::string &log_prefix, const std::string &log_directory, const bool show_microseconds_,
+                          const bool standing_name_)
+  : _log_file_with_path(log_directory), _log_prefix_backup(log_prefix), _outptr(new std::ofstream), 
+    show_microseconds(show_microseconds_), standing_name(standing_name_)
 {
   _log_prefix_backup = prefixSanityFix(log_prefix);
   if (!isValidFilename(_log_prefix_backup)) {
     std::cerr << "LogFileSink: forced abort due to illegal log prefix [" << log_prefix << "]" << std::endl;
     abort();
   }
 
-  std::string file_name = createLogFileName(_log_prefix_backup);
+  std::string file_name;
+  if (standing_name_) {
+    file_name = _log_prefix_backup + ".log";
+  } else {
+    file_name = createLogFileName(_log_prefix_backup);
+  }
   _log_file_with_path = pathSanityFix(_log_file_with_path, file_name);
   _outptr = createLogFile(_log_file_with_path);
 
@@ -165,7 +172,11 @@ std::string LogFileSink::createLogFileName(const std::string &verified_prefix)
 bool LogFileSink::openLogFile(const std::string &complete_file_with_path, std::ofstream &outstream)
 {
   std::ios_base::openmode mode = std::ios_base::out; // for clarity: it's really overkill since it's an ofstream
-  mode |= std::ios_base::trunc;
+  if (standing_name){
+    mode |= std::ios_base::app;
+  } else {
+    mode |= std::ios_base::trunc;
+  }
   outstream.open(complete_file_with_path, mode);
   if (!outstream.is_open()) {
     std::ostringstream ss_error;

src/utils/LogFileSink.h

@@ -11,7 +11,8 @@ using namespace g3;
 class LogFileSink
 {
 public:
-  LogFileSink(const std::string &log_prefix, const std::string &log_directory, const bool show_microseconds);
+  LogFileSink(const std::string &log_prefix, const std::string &log_directory, 
+               const bool show_microseconds = false, const bool standing_name = false);
   virtual ~LogFileSink();
 
   void fileWrite(const LogMessageMover message);
@@ -21,6 +22,7 @@ class LogFileSink
   std::string _log_prefix_backup; // needed in case of future log file changes of directory
   std::unique_ptr <std::ofstream> _outptr;
   bool show_microseconds;
+  bool standing_name;
 
   std::ofstream &filestream()
   {

tools/colorer/ConsoleToolsRunner.cpp

@@ -27,6 +27,7 @@ struct setting {
   std::string log_file_dir = "./";
   std::string log_level = "INFO";
   bool enable_logging = false;
+  bool standing_logfile = false;
   int profile_loops = 1;
   bool line_numbers = false;
   bool copyright = true;
@@ -200,6 +201,10 @@ void readArgs(int argc, char* argv[])
       settings.enable_logging = true;
       continue;
     }
+    if (argv[i][1] == 'e' && argv[i][2] == 's') {
+      settings.standing_logfile = true;
+      continue;
+    }
     if (argv[i][1]) {
       fprintf(stderr, "WARNING: unknown option '-%s'\n", argv[i] + 1);
     }
@@ -239,6 +244,7 @@ void printError()
           "  -eh<name>  Log file name prefix\n"
           "  -ed<name>  Log file directory\n"
           "  -el<name>  Log level (DEBUG, INFO, WARNING, ERROR, ERROR_F, FATAL)\n"
+          "  -es        Standing log file name, without date"
          );
 };
 
@@ -319,7 +325,7 @@ int workIt()
         printError();
         break;
     }
-  } catch (Exception e) {
+  } catch (Exception &e) {
     LOG(ERROR) << e.what();
     fprintf(stderr, "%s", e.what());
     return -1;
@@ -336,7 +342,7 @@ int main(int argc, char* argv[])
   std::unique_ptr<LogWorker> log_worker;
   if (settings.enable_logging) {
     log_worker = std::move(g3::LogWorker::createLogWorker());
-    auto handle = log_worker->addSink(std2::make_unique<LogFileSink>(settings.log_file_prefix, settings.log_file_dir, false), &LogFileSink::fileWrite);
+    auto handle = log_worker->addSink(std2::make_unique<LogFileSink>(settings.log_file_prefix, settings.log_file_dir, false, settings.standing_logfile), &LogFileSink::fileWrite);
     g3::only_change_at_initialization::setLogLevel(settings.log_level);
     g3::initializeLogging(log_worker.get());
   }