integrate spdlog

CMakeLists.txt

@@ -43,6 +43,12 @@ FetchContent_Declare(
   URL ${CMAKE_SOURCE_DIR}/deps/argparse-v3.0-mirror.zip
 )
 FetchContent_MakeAvailable(argparse)
+FetchContent_Declare(
+  spdlog
+  URL_HASH SHA256=9f6763bb76fff7db371f5733626c83352edd7c57899501ab00248fafad9cc504
+  URL ${CMAKE_SOURCE_DIR}/deps/spdlog-v1.13.0-mirror.zip
+)
+FetchContent_MakeAvailable(spdlog)
 include_directories(${CMAKE_SOURCE_DIR}/bpt/include)
 include_directories(${CMAKE_SOURCE_DIR}/stlite)
 enable_testing()

src/CMakeLists.txt

@@ -5,4 +5,5 @@ if(OJ_TEST_BACKEND)
 endif()
 add_executable(${BACKEND_EXETUABLE_NAME} main.cpp)
 target_link_libraries(${BACKEND_EXETUABLE_NAME} argparse)
+target_link_libraries(${BACKEND_EXETUABLE_NAME} spdlog::spdlog)
 set_target_properties(${BACKEND_EXETUABLE_NAME} PROPERTIES RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR})

src/main.cpp

@@ -1,9 +1,27 @@
+#include <spdlog/async.h>
+#include <spdlog/sinks/basic_file_sink.h>
+#include <spdlog/sinks/stdout_color_sinks.h>
+#include <spdlog/spdlog.h>
 #include <argparse/argparse.hpp>
+#include <iostream>
 #include <string>
 const std::string main_version = "0.0.1";
 const std::string build_version = GIT_COMMIT_HASH;
+std::shared_ptr<spdlog::logger> logger_ptr;
 int main(int argc, char *argv[]) {
   argparse::ArgumentParser program("backend", main_version + "-" + build_version);
+  argparse::ArgumentParser fsck_command("fsck");
+  fsck_command.add_description("Check and fix data");
+  program.add_subparser(fsck_command);
+  program.add_argument("-d", "--directory").help("Directory to serve").default_value(std::string(".")).nargs(1, 1);
+  auto &group = program.add_mutually_exclusive_group();
+  group.add_argument("-c", "--consolelog").help("Enable console log").default_value(false).implicit_value(true);
+  group.add_argument("-l", "--logfile").help("Enable log file").nargs(1, 1);
+  program.add_argument("--level")
+      .help("Log level")
+      .default_value(std::string("info"))
+      .nargs(1, 1)
+      .choices("debug", "info", "warn", "error");
   try {
     program.parse_args(argc, argv);
   } catch (const std::exception &err) {
@@ -11,5 +29,33 @@ int main(int argc, char *argv[]) {
     std::cerr << program;
     return 1;
   }
+  auto data_directory = program.get<std::string>("--directory");
+  bool log_enabled = program.get<bool>("--consolelog");
+  std::string log_file_name;
+  if (auto it = program.present("--logfile")) {
+    log_enabled = true;
+    log_file_name = program.get<std::string>("--logfile");
+  }
+  std::string log_level = program.get<std::string>("--level");
+  if (log_level == "debug")
+    spdlog::set_level(spdlog::level::debug);
+  else if (log_level == "info")
+    spdlog::set_level(spdlog::level::info);
+  else if (log_level == "warn")
+    spdlog::set_level(spdlog::level::warn);
+  else if (log_level == "error")
+    spdlog::set_level(spdlog::level::err);
+  else {
+    std::cerr << "Invalid log level" << std::endl;
+    return 1;
+  }
+  if (log_enabled) {
+    if (log_file_name == "")
+      logger_ptr = spdlog::stderr_color_mt("stderr_logger");
+    else
+      logger_ptr = spdlog::basic_logger_mt<spdlog::async_factory>("file_logger", log_file_name);
+  }
+  if (logger_ptr) logger_ptr->info("Starting backend");
+  if (logger_ptr) logger_ptr->info("Data directory: {}", data_directory);
   return 0;
 }