strix/logger4njs
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fixed stuff; args. added: stuff.

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Strix 2022-05-07 16:07:00 +02:00
parent 9e38f0b3e3
commit ce0e6a1333
Signed by untrusted user who does not match committer: didier
GPG key ID: 01E71F18AA4398E5
1 changed files with 41 additions and 52 deletions
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93
lib/logging.js
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@ -4,18 +4,24 @@ class Logger {
/** Logger /** Logger
* *
* @param {{ * @param {{
* output: NodeJS.WritableStream, * output: NodeJS.WritableStream,
* template: string, * output2: NodeJS.WritableStream,
* argsPlaceholder: string, * template: string,
* historySize: number, * levelsColors: {[level: string]: string},
* defaultLevel: string * historySize: number,
* onHistoryFull: () => void,
* argsPlaceholder: string,
* dict: {[key: string]: string}
* logFrom: string
* logFrom2: string
* }} options * }} options
*/ */
constructor(options = {}) constructor(options = {})
{ {
this.output = options.output || process.stdout; this.output = options.output || process.stdout;
this.output2 = options.output2 || null;
this.template = options.template || "[{level} {timestamp}] {message}"; this.template = options.template || "[{level} {timestamp}] {message}";
this.levelsColors = { // no same colors this.levelsColors = options.levelsColors || { // no same colors
debug: "\x1b[32m", debug: "\x1b[32m",
info: "\x1b[36m", info: "\x1b[36m",
warn: "\x1b[33m", warn: "\x1b[33m",
@ -32,6 +38,12 @@ class Logger {
this.alog("warn;", "History is full, dropping 25 oldest entries."); this.alog("warn;", "History is full, dropping 25 oldest entries.");
this.history = this.history.slice(25); this.history = this.history.slice(25);
}; };
this.logFrom = options.logFrom || "D"; // when to stop logging to output
this.logFrom2 = options.logFrom2 || "D"; // when to stop logging to output2
// Order from least important to most: D, I, W, E, F
this.logImportance = {
D: 0, I: 1, W: 2, E: 3, F: 4
};
} }
/** log /** log
@ -41,16 +53,16 @@ class Logger {
* *
*/ */
log (message, ...args) log (message, ...args)
{this.alog(this.defaultLevel, message, args);} {this.alog(this.defaultLevel, message, ...args);}
/** alog /** alog
* *
* @param {string} level * @param {'debug' | 'info' | 'warn' | 'error' | 'fatal'} level
* @param {string} message * @param {string} message
* @param {any} ...args * @param {any} ...args
* *
*/ */
alog(level, message, args = []) async alog(level, message, ...args)
{ {
//replace placeholders with args //replace placeholders with args
let msg = this.template; let msg = this.template;
@ -63,56 +75,33 @@ class Logger {
// [I 1/1/1970 00:00:00] spul {} {} // [I 1/1/1970 00:00:00] spul {} {}
//replace placeholders with args //replace placeholders with args
let argPlaceholder = this.argsPlaceholder; if (args.length > 0)
let matches = (msg.match(new RegExp(argPlaceholder, "g")) || []).length; {
let argsFilled = 0; let argPH = this.argsPlaceholder;
// args.forEach((v, i, a) => { for (let arg of args)
// if (Buffer.isBuffer(v)) {
// v = conversion.properHex(v).str; // detect if arg is an object and convert it to string if it is
// if (typeof v === 'object') if (typeof arg === "object" || Array.isArray(arg) || arg.constructor === Object)
// v = "\x1b[0m" + JSON.stringify(v, null, 2) + "\x1b[0m"; arg = JSON.stringify(arg, null, 2);
// msg = msg.replace(argPlaceholder, v); msg = msg.replace(argPH, arg);
// argsFilled++; }
// console.log(`${argPlaceholder} -> ${v}`); }
// });
// regexp replace
let regexp = new RegExp(argPlaceholder, "g");
msg = msg.replace(regexp, (match, offset, string) => {
if (argsFilled >= matches)
return match;
let v = args[argsFilled];
if (Buffer.isBuffer(v))
v = conversion.properHex(v).str;
if (typeof v === 'object')
v = "\x1b[0m" + JSON.stringify(v, null, 2) + "\x1b[0m";
argsFilled++;
return v;
});
if (matches !== argsFilled && args.length >= matches)
console.log("warn;", "Not all placeholders were replaced.\n" +
"Placeholders: " + matches + "\n" +
"Args: " + args.length + "\n" +
"Args filled: " + argsFilled + "\n" +
"Message: " + msg);
if (matches < args.length)
msg += ` (${args.length - matches} args overflow.)`;
else if (matches > args.length)
msg += ` (${matches - args.length} args missing.)`;
//replace dictionary keys //replace dictionary keys
if (this.dict) if (this.dict)
msg = dictionaryConversion(msg, this.dict); msg = conversion.dictionaryConversion(msg, this.dict);
// add color // add color
msg = this.levelsColors[level] + msg + "\x1b[0m"; let msgNoColors = msg;
if (this.levelsColors && this.levelsColors[level])
msg = this.levelsColors[level] + msg + "\x1b[0m";
//log //log (if important enough)
this.output.write(msg + "\n"); if (this.logImportance[level.charAt(0).toUpperCase()] >= this.logImportance[this.logFrom])
this.output.write(msg + "\n");
if (this.output2 && this.logImportance[level.charAt(0).toUpperCase()] >= this.logImportance[this.logFrom2])
this.output2.write(msgNoColors + "\n");
//save to history //save to history
this.history.push({ this.history.push({