Merge branch 'release/v1.3.0'

.gitignore

@@ -25,3 +25,5 @@ build/Release
 # Dependency directory
 # https://www.npmjs.org/doc/misc/npm-faq.html#should-i-check-my-node_modules-folder-into-git
 node_modules
+
+.idea

README.md

@@ -32,7 +32,8 @@ Options are the following:
 * __unique:__ Whether to log only the declared level and none above. *[boolean]* *[optional]*
 * __silent:__ Whether to suppress output. *[boolean]* *[optional]*
 * __disableNotification:__ Sends the message silently. *[boolean]* *[optional]*
-* __template:__ Format output message. *[optional]*
+* __template:__ Format output message. *[string]* *[optional]*
+* __formatMessage:__ Format output message by own method. *[function]* *[optional]*
 * __handleExceptions:__ Handle uncaught exceptions. *[boolean]* *[optional]*
 * __batchingDelay:__ Time in ms within which to batch messages together. *[integer]* *[optional]* *[default 0 or disabled]*
 * __batchingSeparator:__ String with which to join batched messages with *[string]* *[default "\n\n"]*
@@ -114,6 +115,32 @@ winston.log('error', 'Redrum. Redrum. Redrum.', { name: 'Danny', surname: 'Torra
 //Output: [error] [Redrum. Redrum. Redrum.] [Danny] [Torrance]
 ```
 
+Using custom format message:
+```js
+var winston = require('winston');
+
+require('winston-telegram').Telegram;
+
+winston.add(winston.transports.Telegram, {
+		token : 'TELEGRAM_TOKEN',
+		chatId : 'CHAT_ID',
+		level : 'error',
+		unique : true,
+		formatMessage : function(opts) {
+		    var message = opts.message;
+
+		    if (opts.level === 'warn') {
+		        message += '[Warning] ';
+		    }
+		    return message;
+		}
+    });
+
+winston.warn('Some warning!!');
+
+//Output: [Warning] Some warning!!
+```
+
 Using batching of messages to avoid exceeding rate limits:
 ``` js
 var winston = require('winston');
@@ -159,6 +186,9 @@ setTimeout(function() {
 
 ## Change history
 
+### v1.3.0 (2018/05/03)
+- [#10](https://github.com/ivanmarban/winston-telegram/pull/10) Add formatMessage property ([@noveogroup-amorgunov][6])
+
 ### v1.2.1 (2017/07/26)
 - [#9](https://github.com/ivanmarban/winston-telegram/pull/9) Add error description in case of error ([@dutu][5])
 - Update sf library
@@ -199,4 +229,5 @@ setTimeout(function() {
 [2]: https://github.com/speedone
 [3]: https://github.com/alberto467
 [4]: https://github.com/JustinOng
-[5]: https://github.com/dutu
+[5]: https://github.com/dutu
+[6]: https://github.com/noveogroup-amorgunov

lib/winston-telegram.js

@@ -21,6 +21,10 @@ var Telegram = exports.Telegram = function (options) {
   if (!options.token || !options.chatId){
     throw new Error('winston-telegram requires \'token\' and \'chatId\' property');
   }
+  if (options.formatMessage && typeof options.formatMessage !== 'function'){
+    throw new Error('winston-telegram \'formatMessage\' property should be function');
+  }
+
   this.token = options.token;
   this.chatId = options.chatId;
   this.level = options.level || 'info';
@@ -30,6 +34,7 @@ var Telegram = exports.Telegram = function (options) {
   this.disableNotification = options.disableNotification || false;
   this.name = options.name || this.name;
   this.template = options.template || '[{level}] {message}';
+  this.formatMessage = options.formatMessage;
   this.batchingDelay = options.batchingDelay || 0;
   this.batchingSeparator = options.batchingSeparator || "\n\n";
 
@@ -65,7 +70,14 @@ Telegram.prototype.log = function (level, msg, meta, callback) {
   if (this.silent) return callback(null, true);
   if (this.unique && this.level != level) return callback(null, true);
 
-  var messageText = format(this.template,{level : level, message : msg, metadata : meta});
+  var messageText = null;
+  var formatOptions = {level : level, message : msg, metadata : meta};
+
+  if (this.formatMessage) {
+      messageText = this.formatMessage(formatOptions)
+  } else {
+      messageText = format(this.template, formatOptions)
+  }
 
   if (this.batchingDelay) {
     this.batchedMessages.push(messageText);

package.json

@@ -1,7 +1,7 @@
 {
   "name": "winston-telegram",
   "description": "A Telegram transport for winston",
-  "version": "1.2.1",
+  "version": "1.3.0",
   "author": "Ivan Marban",
   "repository": {
     "type": "git",