137 lines
3.1 KiB
JavaScript
137 lines
3.1 KiB
JavaScript
const moment = require('moment');
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// constants
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const LOG_PREFIX_DEBUG = 'debug';
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const LOG_PREFIX_INFO = 'info';
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const LOG_PREFIX_WARNING = 'warning';
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const LOG_PREFIX_ERROR = 'error';
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const LOGLEVEL_DEBUG = 0;
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const LOGLEVEL_INFO = 1;
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const LOGLEVEL_WARNING = 2;
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const LOGLEVEL_ERROR = 3;
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var loglevel = getLogLevel();
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var timestamp = getTimestamp();
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function initialize() {
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return new Promise((resolve, reject) => {
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if (global.config == undefined) {
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reject('could not initialize logger, config is undefined');
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}
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loglevel = getLogLevel();
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timestamp = getTimestamp();
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resolve();
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});
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}
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// get the loglevel
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function getLogLevel() {
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if (global.config?.log?.level == undefined) {
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return LOGLEVEL_INFO;
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}
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switch (global.config.log.level) {
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case LOG_PREFIX_DEBUG:
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case LOGLEVEL_DEBUG:
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return LOGLEVEL_DEBUG;
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case LOG_PREFIX_INFO:
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case LOGLEVEL_INFO:
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return LOGLEVEL_INFO;
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case LOG_PREFIX_WARNING:
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case LOGLEVEL_WARNING:
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return LOGLEVEL_WARNING;
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case LOG_PREFIX_ERROR:
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case LOGLEVEL_ERROR:
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return LOGLEVEL_ERROR;
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default:
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return LOGLEVEL_INFO;
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}
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}
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// get the timestamp format
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function getTimestamp() {
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if (global.config?.log?.format != undefined) {
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return global.config.log.format;
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}
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return "DD.MM.YYYY HH:mm:ss:SS";
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}
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// prefix log with 'info'
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function info(message) {
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if (loglevel > LOGLEVEL_INFO) {
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return;
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}
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trace(message);
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}
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// prefix log with 'info'
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function warn(message) {
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if (loglevel > LOGLEVEL_WARNING) {
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return;
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}
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trace(message, 'warning');
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}
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// prefix log with 'debug'
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function debug(message) {
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if (loglevel > LOGLEVEL_DEBUG) {
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return;
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}
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trace(message, 'debug');
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}
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// prefix log with 'error'
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function error(message) {
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if (loglevel > LOGLEVEL_ERROR) {
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return;
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}
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if (message.stack) {
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trace(message.stack, 'error');
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return;
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}
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if (message.errors !== undefined) {
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for (let index = 0; index < message.errors.length; index++) {
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trace(message.errors[index], 'error');
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}
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return;
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}
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if (message.message) {
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trace(message.message, 'error');
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return;
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}
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trace(message, 'error');
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}
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// default logging function
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function trace(message, prefix) {
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if (message === undefined || message === null || message.length === 0) {
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return;
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}
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if (prefix === undefined || prefix === null || prefix.length === 0) {
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prefix = 'info';
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}
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let print;
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switch (prefix) {
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case 'error':
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print = console.error;
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break;
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case 'debug':
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print = console.debug;
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break;
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case 'warning':
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print = console.warn;
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break;
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default:
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print = console.log;
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}
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message = moment().format(timestamp) + ' | ' + prefix + ' > ' + message;
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print(message);
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}
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// exports
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module.exports = {
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initialize,
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info,
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warn,
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debug,
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error
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}; |