emit new event when new log file is created (#220)

Author: mattberther

README.md

@@ -51,7 +51,7 @@ The DailyRotateFile transport can rotate files by minute, hour, day, month, year
   logger.info('Hello World!');
 ```
 
-You can listen for the *rotate* custom event. The rotate event will pass two parameters to the callback (*oldFilename*, *newFilename*). You can also listen for the *archive* custom event. The archive event will pass one parameter to the callback (*zipFilename*).
+This transport emits three custom events: *new*, *rotate*, and *archive*. You can listen for the *new* custom event, which is fired when a new log file is created. The new event will pass one parameter to the callback (*newFilename*). You can listen for the *rotate* custom event, which is fired when the log file is rotated. The rotate event will pass two parameters to the callback (*oldFilename*, *newFilename*). You can also listen for the *archive* custom event, which is fired when the log file is archived. The archive event will pass one parameter to the callback (*zipFilename*).
 
 ## LICENSE
 MIT

daily-rotate-file.js

@@ -91,6 +91,10 @@ var DailyRotateFile = function (options) {
             file_options: options.options ? options.options : {flags: 'a'}
         });
 
+        this.logStream.on('new', function (newFile) {
+            self.emit('new', newFile);
+        });
+
         this.logStream.on('rotate', function (oldFile, newFile) {
             self.emit('rotate', oldFile, newFile);
         });

test/transport-tests.js

@@ -150,6 +150,16 @@ describe('winston/transports/daily-rotate-file', function () {
             }).to.throw();
         });
 
+        it('should raise the new event for a new log file', function (done) {
+            this.transport.on('new', function (newFile) {
+                expect(newFile).to.equal(filename);
+                done();
+            });
+
+            sendLogItem(this.transport, 'info', 'this message should write to the file');
+            this.transport.close();
+        });
+
         describe('when setting zippedArchive', function () {
             it('should archive the log after rotating', function (done) {
                 var self = this;
@@ -234,7 +244,6 @@ describe('winston/transports/daily-rotate-file', function () {
                         done();
                     });
                 });
-                this.transport.close();
             });
         });
     });