Version 1.4.0: added tryReconnect option

Author: yurijmikhalevich

README.md

@@ -53,6 +53,8 @@ MongoDB transports.
 new log collection as capped, defaults to false.
 * __cappedSize:__ Size of logs capped collection in bytes, defaults to 10000000.
 * __cappedMax:__ Size of logs capped collection in number of documents.
+* __tryReconnect:__ Will try to reconnect to the database in case of fail during
+initialization. Works only if __db__ is a string. Defaults to false.
 
 *Metadata:* Logged as a native JSON object in 'meta' property.
 

lib/winston-mongodb.js

@@ -1,5 +1,5 @@
 /**
- * @module winston-mongodb
+ * @module 'winston-mongodb'
  * @fileoverview Winston transport for logging into MongoDB
  * @license MIT
  * @author [email protected] (Charlie Robbins)
@@ -40,6 +40,15 @@ var helpers = require('./helpers');
  * @param {string} options.label Label stored with entry object if defined.
  * @param {string} options.name Transport instance identifier. Useful if you
  * need to create multiple MongoDB transports.
+ * @param {boolean=false} options.capped In case this property is true,
+ * winston-mongodb will try to create new log collection as capped.
+ * @param {number=10000000} options.cappedSize Size of logs capped collection
+ * in bytes.
+ * @param {number} options.cappedMax Size of logs capped collection in number
+ * of documents.
+ * @param {boolean=false} options.tryReconnect Will try to reconnect to the
+ * database in case of fail during initialization. Works only if `db` is
+ * a string.
  */
 var MongoDB = exports.MongoDB = function(options) {
   winston.Transport.call(this, options);
@@ -127,12 +136,12 @@ var MongoDB = exports.MongoDB = function(options) {
       db.authenticate(self.username, self.password,
           function(err, result) {
             if (err) {
-              console.error('winston-mongodb: error initialising logger', err);
+              cb(err, null);
               db.close();
               return;
             }
             if (!result) {
-              console.error('winston-mongodb: invalid username or password');
+              cb(new Error('invalid username or password'), null);
               db.close();
               return;
             }
@@ -144,14 +153,22 @@ var MongoDB = exports.MongoDB = function(options) {
     }
   }
 
-  if ('string' === typeof this.db) {
-    mongodb.MongoClient.connect(this.db, this.options, function(err, db) {
+  function connectToDatabase(logger) {
+    mongodb.MongoClient.connect(logger.db, logger.options, function(err, db) {
       if (err) {
         console.error('winston-mongodb: error initialising logger', err);
+        if (options.tryReconnect) {
+          console.log('winston-mongodb: will try reconnecting in 10 seconds');
+          setTimeout(function() { connectToDatabase(logger); }, 10000);
+        }
         return;
       }
       setupDatabaseAndEmptyQueue(db);
     });
+  }
+
+  if ('string' === typeof this.db) {
+    connectToDatabase(this);
   } else if ('function' === typeof this.db.then) {
     this.db.then(function(db) {
       setupDatabaseAndEmptyQueue(db);

package.json

@@ -1,7 +1,7 @@
 {
   "name": "winston-mongodb",
   "license": "MIT",
-  "version": "1.3.0",
+  "version": "1.4.0",
   "description": "A MongoDB transport for winston",
   "author": "Charlie Robbins <[email protected]>",
   "contributors": [
@@ -15,11 +15,11 @@
   },
   "keywords": ["logging", "sysadmin", "tools", "winston", "mongodb", "log", "logger"],
   "dependencies": {
-    "mongodb": ">=2.0.46 <3.0.0"
+    "mongodb": "^2.0.46"
   },
   "devDependencies": {
     "winston": ">=1.1.1 <3.0.0",
-    "vows": "0.8.x",
+    "vows": "~0.8.1",
     "bluebird": ">=2.10.2 <4.0.0"
   },
   "main": "./lib/winston-mongodb",