MCSManager/core/log.js

const log4js = require("log4js");
const fs = require("fs-extra");

const LOG_FILE_PATH = "logs/current.log";

if (!fs.existsSync("logs/")) fs.mkdirSync("logs");
// 启动时自动储存上次日志文件
if (fs.existsSync(LOG_FILE_PATH)) {
  const date = new Date();
  const logFilename = date.getFullYear() + "-" + (date.getMonth() + 1) + "-" + date.getDay() + "_" + date.getHours() + "-" + date.getMinutes() + "-" + date.getSeconds();
  fs.renameSync(LOG_FILE_PATH, "logs/" + logFilename + ".log");
}

log4js.configure({
  appenders: {
    out: {
      type: "stdout",
      layout: {
        type: "pattern",
        pattern: "[%d{MM/dd hh:mm:ss}] [%[%p%]] %m"
      }
    },
    app: {
      type: "file",
      filename: LOG_FILE_PATH,
      layout: {
        type: "pattern",
        pattern: "%d %p %m"
      }
    }
  },
  categories: {
    default: {
      appenders: ["out", "app"],
      level: "info"
    }
  }
});

const logger = log4js.getLogger("default");

// 多参数输出，但仅限于输出 INFO 级别
MCSERVER.log = function (...p) {
  let msg = "";
  for (const v of p) {
    if (v) msg += v + " ";
  }
  logger.info(msg);
};

// INFO 级别输出
MCSERVER.infoLog = (info = "", value = "") => {
  let msg = value;
  if (info.toUpperCase() != "INFO") {
    msg = [info, "-", value].join(" ");
  }
  logger.info(msg);
};

// INFO 级别输出
MCSERVER.info = (...p) => {
  let msg = "";
  for (const v of p) {
    if (v) msg += v + " ";
  }
  logger.info(msg);
};

// ERROR 级别输出
MCSERVER.error = (msg, err) => {
  logger.error(msg);
  if (err) logger.error(err);
};

// WARN 级别输出
MCSERVER.warning = (title, msg = null) => {
  logger.warn(title);
  if (msg) logger.warn(msg);
};