Logging: To Console

Console adapter for logger driver. Print Client's log messages to Server's console package. All messages is enhanced with colors and extra styles for better readability.

This package is not limited to transferring Client log messages to Server. It can be used on Client or Server only, or for printing colorized messages.

Features:

• 💪 Flexible log level filters;
• 👨‍💻 userId is automatically passed and logged, data is associated with logged-in user;
• 📟 Pass logs from Client right to Server's console;
• 🕷 Catch all browser's errors and exceptions.

Screen shots:

Server:

Client:

Installation:

meteor add ostrio:logger # If not yet installed
meteor add ostrio:loggerconsole

ES6 Import:

import { Logger } from 'meteor/ostrio:logger';
import { LoggerConsole } from 'meteor/ostrio:loggerconsole';

Usage

Initialize LoggerConsole instance passing LoggerInstance as a first argument into constructor to enable logging into the console.

Initialization [Isomorphic]

new LoggerConsole(LoggerInstance, settings)

• LoggerInstance {Logger} - from new Logger()
• settings {Object}
• settings.highlight {Boolean} - Enable/Disable color highlighting; By default: true
• settings.format {Function} - This function must return String. Arguments:
  • opts {Object}
  • opts.userId {String}
  • opts.time {Date} - Report date
  • opts.level {String} - Message level, one of: ERROR, FATAL, WARN, DEBUG, INFO, TRACE, LOG, *
  • opts.message {String} - Report message
  • opts.data {Object} - Additional info passed as object

Example: [Isomorphic]

import { Logger } from 'meteor/ostrio:logger';
import { LoggerConsole } from 'meteor/ostrio:loggerconsole';

// Initialize Logger:
const log = new Logger();
// Initialize and enable LoggerConsole with default settings:
(new LoggerConsole(log)).enable();

// Initialize and enable LoggerConsole with custom formatting:
(new LoggerConsole(log, {
  format(opts) {
    return ((Meteor.isServer) ? '[SERVER]' : '[CLIENT]') + ' [' + opts.level + '] - ' + opts.message;
  }
})).enable();

Activate with custom adapter settings: [Isomorphic]

import { Logger } from 'meteor/ostrio:logger';
import { LoggerConsole } from 'meteor/ostrio:loggerconsole';

const log = new Logger();
(new LoggerConsole(log)).enable({
  enable: true,
  filter: ['ERROR', 'FATAL', 'WARN'], /* Filters: 'ERROR', 'FATAL', 'WARN', 'DEBUG', 'INFO', 'TRACE', '*' */
  client: true, // Set to `false` to avoid log transfer from Client to Server
  server: true  // Set to `false` to disallow execution on Server
});

Log message: [Isomorphic]

import { Logger } from 'meteor/ostrio:logger';
import { LoggerConsole } from 'meteor/ostrio:loggerconsole';

const log = new Logger();
(new LoggerConsole(log)).enable();

/*
  message {String} - Any text message
  data    {Object} - [optional] Any additional info as object
  userId  {String} - [optional] Current user id
 */
log.info(message, data, userId);
log.debug(message, data, userId);
log.error(message, data, userId);
log.fatal(message, data, userId);
log.warn(message, data, userId);
log.trace(message, data, userId);
log._(message, data, userId); // Shortcut

// Use with throw
throw log.error(message, data, usmerId);

Catch-all Client's errors example: [Client]

/* Store original window.onerror */
const _GlobalErrorHandler = window.onerror;

window.onerror = function (msg, url, line) {
  log.error(msg, {file: url, onLine: line});
  if (_GlobalErrorHandler) {
    _GlobalErrorHandler.apply(this, arguments);
  }
};

Catch-all Server's errors example: [Server]

const bound = Meteor.bindEnvironment((callback) => {callback();});
process.on('uncaughtException', function (err) {
  bound(() => {
    log.error('Server Crashed!', err);
    console.error(err.stack);
    process.exit(7);
  });
});

Catch-all Meteor's errors example: [Server]

// store original Meteor error
const originalMeteorDebug = Meteor._debug;
Meteor._debug = function (message, stack) {
  const error = new Error(message);
  error.stack = stack;
  log.error('Meteor Error!', error);
  return originalMeteorDebug.apply(this, arguments);
};

Use multiple logger(s) with different settings: [Isomorphic]

const log1 = new Logger();
const log2 = new Logger();

(new LoggerConsole(log1)).enable({
  filter: ['*'],
  client: true,
  server: true
});

(new LoggerConsole(log2)).enable({
  filter: ['ERROR', 'FATAL'],
  client: true,
  server: true
});

Running Tests

1. Clone this package
2. In Terminal (Console) go to directory where package is cloned
3. Then run:

Meteor/Tinytest

meteor test-packages ./

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