log設定log4js

info.md

log.ts

import log4js from "log4js";
import path from "path";
import util from "util";

const logDirectory = path.join(process.cwd(), "logs");
const logLayout = {
  type: "pattern",
  pattern: "%d %p %c %f:%l %x{singleLine}",
  tokens: {
    singleLine: function (logEvent: { data: Array<unknown> }) {
      return logEvent.data
        .map((d) => {
          if (
            typeof d === "boolean" ||
            typeof d === "number" ||
            typeof d === "string"
          ) {
            return d.toString().replace(/\n/gm, "\\n");
          } else {
            return util
              .inspect(d, { breakLength: Infinity })
              .replace(/\n/gm, "\\n");
          }
        })
        .filter((d) => d.length > 0)
        .join(" ");
    },
  },
};

log4js.configure({
  appenders: {
    console: {
      type: "console",
      layout: logLayout,
    },
    app: {
      type: "dateFile",
      layout: logLayout,
      filename: path.join(logDirectory, "app.log"),
      pattern: "-yyyy-MM-dd",
      daysToKeep: 7,
      compress: true,
    },
  },
  categories: {
    default: {
      appenders: ["console", "app"],
      level: "all",
      enableCallStack: true,
    },
  },
});

import { getLogger } from "log4js";
const logger = getLogger();

// 略

logger.info("enqueued:", sqsResponse);
logger.error(new Error("piyo"));

export interface ILogging {
        Logging(str:string):any
    }
    export class LoggingClass implements ILogging {
        Logging(logstr:string):any {
            const log4js = require('log4js');
            log4js.configure({
            appenders : {
                app : {type : 'file', filename : './log/app.log'}
            },
            categories : {
                default : {appenders : ['app'], level: 'debug'},
            }
            });
            const logger = log4js.getLogger('app');
            logger.debug(logstr)
        }
    }

configure({
  appenders: {
    console: {
      type: "console"
    },
    logfile: { type: "file", filename: "log/app.log" }
  },
  categories: { default: { appenders: ["console", "logfile"], level: "error" } }
});