closes #2188

src/events.js

@@ -101,15 +101,39 @@ var fs = require('fs'),
 		});
 	};
 
-	events.getLog = function(callback) {
+	events.getLog = function(end, len, callback) {
 		var logFile = path.join(nconf.get('base_dir'), logFileName);
 
-		fs.readFile(logFile, function(err, res) {
-			if(err) {
+		fs.stat(logFile, function(err, stat) {
+			if (err) {
 				return callback(null, 'No logs found!');
 			}
-			callback(null, res);
+
+			var buffer = '';
+			var size = stat.size;
+			if (end === -1) {
+				end = size;
+			}
+
+			end = parseInt(end, 10);
+			var start = Math.max(0, end - len);
+
+			var rs = fs.createReadStream(logFile, {start: start, end: end});
+			rs.addListener('data', function(lines) {
+				buffer += lines.toString();
+			});
+
+			rs.addListener('end', function() {
+				var firstNewline = buffer.indexOf('\n');
+				if (firstNewline !== -1) {
+					buffer = buffer.slice(firstNewline);
+					buffer = buffer.split('\n').reverse().join('\n');
+				}
+
+				callback(null, {data: buffer, next: end - buffer.length});
+			})
 		});
+
 	};
 
 }(module.exports));