[folly] 구축 및 로그 예제

git clone https://github.com/microsoft/vcpkg C:\vcpkg
cd vcpkg
bootstrap-vcpkg.bat
vcpkg integrate install
vcpkg install folly:x64-windows
vcpkg install folly:x64-windows --head

#include <folly/portability/Windows.h>
#include <folly/init/Init.h>
#include <folly/logging/Init.h>
#include <folly/logging/xlog.h>
#include <folly/logging/StreamHandlerFactory.h>
#include <folly/logging/FileHandlerFactory.h>
#include <print>

int main(int argc, char** argv)
{
	SetConsoleOutputCP(CP_UTF8);

	folly::Init init(&argc, &argv);

	auto& db = folly::LoggerDB::get();
	db.registerHandlerFactory(std::make_unique<folly::StreamHandlerFactory>(), true);
	db.registerHandlerFactory(std::make_unique<folly::FileHandlerFactory>(), true);

	try {
		folly::initLogging(R"JSON(
			{
				"handlers": {
					"hconsole": {
						"type": "stream",
						"options": {
							"stream": "stderr",
							"formatter": "glog"
						}
					},
					"hfile": {
						"type": "file",
						"options": {
							"path": "logs/myapp_{Y}{m}{d}_{H}{M}{S}.log",
							"formatter": "glog",
							"level": "INFO",
							"max_file_size": 10485760,
							"max_files": 30,
							"buffer_size": 1048576,
							"append": true,
							"timestamp_precision": "millisecond"
						}
					}
				},
				"categories": {
					".": {
						"level": "DBG",
						"handlers": [
							"hconsole", 
							"hfile"
						]
					}
				}
			}
		)JSON");
	}
	catch (const std::exception& ex) {
		std::println(stderr, "[log-init] {}", ex.what());
		return -1;
	}

	XLOG(INFO) << "info";
	XLOGF(INFO, "formatted info={}", 1000);
	XLOG(DBG) << "debug";
	XLOG(WARN) << "warning";
	XLOG(ERR) << "error";

	return 0;
}

구성 속성 -> C/C++ ->
1. -> 전처리기 -> 전처리기 정의 -> GLOG_USE_GLOG_EXPORT
2. -> 외부 include 지시문 -> 외부 헤더 경고 수준 -> 모든 경고 해제(/external:W0)
3. -> 명령줄 - > /utf-8 추가