luci-app: updated log.

luci-app-ruantiblock/htdocs/luci-static/resources/view/ruantiblock/log.js

@@ -1,4 +1,5 @@
 'require fs';
+'require rpc';
 'require ui';
 'require view.ruantiblock.log-widget as abc';
 'require view.ruantiblock.tools as tools';
@@ -14,6 +15,24 @@ return abc.view.extend({
 
 	entriesHandler : null,
 
+	lastBytes      : 0,
+
+	callLogSize: rpc.declare({
+		object: 'luci.ruantiblock',
+		method: 'getLogSize',
+		expect: { '': {} }
+	}),
+
+	getLogSize() {
+		return this.callLogSize().then((data) => {
+			if(data.bytes) {
+				return Number(data.bytes);
+			} else {
+				throw new Error(_('An error occurred while trying to get the log size!'));
+			};
+		});
+	},
+
 	// logd
 	logdHandler(strArray, lineNum) {
 		let logLevel = strArray[5].split('.');