Upgrade winston

Our log library got a new major version which should be implemented.

That's exactly what this patch does. Implementing the new version of the
logging library.

Signed-off-by: Sheogorath <sheogorath@shivering-isles.com>

lib/config/default.js

@@ -7,6 +7,7 @@ module.exports = {
   urlPath: '',
   host: '0.0.0.0',
   port: 3000,
+  loglevel: 'info',
   urlAddPort: false,
   allowOrigin: ['localhost'],
   useSSL: false,

lib/config/environment.js

@@ -9,6 +9,7 @@ module.exports = {
   host: process.env.CMD_HOST,
   port: toIntegerConfig(process.env.CMD_PORT),
   path: process.env.CMD_PATH,
+  loglevel: process.env.CMD_LOGLEVEL,
   urlAddPort: toBooleanConfig(process.env.CMD_URL_ADDPORT),
   useSSL: toBooleanConfig(process.env.CMD_USESSL),
   hsts: {

lib/config/index.js

@@ -45,6 +45,12 @@ merge(config, require('./hackmdEnvironment'))
 merge(config, require('./environment'))
 merge(config, require('./dockerSecret'))
 
+if (['debug', 'verbose', 'info', 'warn', 'error'].includes(config.loglevel)) {
+  logger.level = config.loglevel
+} else {
+  logger.error('Selected loglevel %s doesn\'t exist, using default level \'debug\'. Available options: debug, verbose, info, warn, error', config.loglevel)
+}
+
 // load LDAP CA
 if (config.ldap.tlsca) {
   let ca = config.ldap.tlsca.split(',')

lib/logger.js

@@ -1,23 +1,19 @@
 'use strict'
-const winston = require('winston')
+const {createLogger, format, transports} = require('winston')
 
-class Logger extends winston.Logger {
-  // Implement stream.writable.write interface
-  write (chunk) {
-    this.info(chunk)
-  }
-}
-
-module.exports = new Logger({
+module.exports = createLogger({
+  level: 'debug',
+  format: format.combine(
+    format.uncolorize(),
+    format.timestamp(),
+    format.align(),
+    format.splat(),
+    format.printf(info => `${info.timestamp} ${info.level}: ${info.message}`)
+  ),
   transports: [
-    new winston.transports.Console({
-      level: 'debug',
-      handleExceptions: true,
-      json: false,
-      colorize: false,
-      timestamp: true
+    new transports.Console({
+      handleExceptions: true
     })
   ],
-  emitErrs: true,
   exitOnError: false
 })