Add timestamps for logs

CHANGELOG.md

@@ -9,6 +9,7 @@
  - NodeJS:
  - FIXED: Support `skip_waypoints` in Node bindings [#6060](https://github.com/Project-OSRM/osrm-backend/pull/6060)
  - Misc:
+ - ADDED: Add timestamps for logs. [#6375](https://github.com/Project-OSRM/osrm-backend/pull/6375)
  - CHANGED: Improve performance of map matching via getPathDistance optimization. [#6378](https://github.com/Project-OSRM/osrm-backend/pull/6378)
  - CHANGED: Optimize RestrictionParser performance. [#6344](https://github.com/Project-OSRM/osrm-backend/pull/6344)
  - ADDED: Support floats for speed value in traffic updates CSV. [#6327](https://github.com/Project-OSRM/osrm-backend/pull/6327)

CMakeLists.txt

@@ -456,6 +456,11 @@ add_subdirectory(${FLATBUFFERS_SRC_DIR}
  ${CMAKE_CURRENT_BINARY_DIR}/flatbuffers-build
  EXCLUDE_FROM_ALL)
 
+set(FMT_INCLUDE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/third_party/fmt-9.1.0/include")
+add_compile_definitions(FMT_HEADER_ONLY)
+include_directories(SYSTEM ${FMT_INCLUDE_DIR})
+
+
 # see https://stackoverflow.com/questions/70898030/boost-link-error-using-conan-find-package
 if (MSVC)
  add_definitions(-DBOOST_ALL_NO_LIB)

src/util/log.cpp

@@ -2,6 +2,7 @@
 #include "util/isatty.hpp"
 #include <boost/algorithm/string/predicate.hpp>
 #include <cstdio>
+#include <fmt/chrono.h>
 #include <iostream>
 #include <mutex>
 #include <string>
@@ -73,23 +74,33 @@ void Log::Init()
  if (!LogPolicy::GetInstance().IsMute() && level <= LogPolicy::GetInstance().GetLevel())
  {
  const bool is_terminal = IsStdoutATTY();
+
+ auto format = [is_terminal](const char *level, const char *color) {
+ const auto timestamp = std::chrono::system_clock::now();
+ return fmt::format("{}[{:%FT%H:%M:}{:%S}] [{}] ",
+ is_terminal ? color : "",
+ timestamp,
+ timestamp.time_since_epoch(),
+ level);
+ };
+
  switch (level)
  {
  case logNONE:
  break;
  case logWARNING:
- stream << (is_terminal ? YELLOW : "") << "[warn] ";
+ stream << format("warn", YELLOW);
  break;
  case logERROR:
- stream << (is_terminal ? RED : "") << "[error] ";
+ stream << format("error", RED);
  break;
  case logDEBUG:
 #ifdef ENABLE_DEBUG_LOGGING
- stream << (is_terminal ? MAGENTA : "") << "[debug] ";
+ stream << format("debug", MAGENTA);
 #endif
  break;
  default: // logINFO:
- stream << "[info] ";
+ stream << format("info", "");
  break;
  }
  }

third_party/fmt-9.1.0/.clang-format

@@ -0,0 +1,8 @@
+# Run manually to reformat a file:
+# clang-format -i --style=file <file>
+Language: Cpp
+BasedOnStyle: Google
+IndentPPDirectives: AfterHash
+IndentCaseLabels: false
+AlwaysBreakTemplateDeclarations: false
+DerivePointerAlignment: false