lark-log

This is Lark.js log module.

Useage

sample

const LarkLogger = require('lark-log');

const logger = new LarkLogger({ 'using-default': true });

logger.notice("Hello");

configure

const LarkLogger = require('lark-log');

const logger = new LarkLogger();

const config = {
    {
    "@description": "This is the default config",
    "level": 1,
    "methods": {
        "debug": {
            "level": 1,
            "output": "console"
        },
        "print": {
            "level": 2,
            "output": "console"
        },
        "trace": {
            "level": 2,
            "output": "system"
        },
        "notice": {
            "level": 3,
            "output": "system"
        },
        "warn": {
            "level": 4,
            "output": "system"
        },
        "error": {
            "level": 5,
            "output": "error"
        },
        "fatal": {
            "level": 5,
            "output": "error"
        }
    },
    "outputs": {
        "default": {
            "line-max-length": 2000,
            "format": "<%= method.toUpperCase() %>:\t<%= date('yyyy-mm-dd HH:MM:ss')%>\t<%= content %>",
            "path-prefix": "logs/",
            "path-suffix": ".log"
        },
        "console": null,
        "system": {
            "path": "system"
        },
        "error": {
            "path": "system",
            "path-suffix": ".log.wf"
        }
    }
};

logger.configure(config);

logger.debug('debug');// write "debug " to terminal
logger.notice('notice');// write "NOTICE: {DATETIME} notice" to system.log, {DATETIME} is in "yyyy-mm-dd HH:MM:ss" style
logger.error('error');//write to system.log.wf

logrotate

logger.configure({
    "outputs": {
        "default": {
            "path-suffix": ".log.<%= date('yyyymmddHH') %>"
        }
    }
});

• If '<%' exists in path (including prefix and suffix), the path will be regarded as a dynamic path. LarkLog calculates the path every when an output came.