From b14d26d5305905067ae2b8d1293b5939ab93608e Mon Sep 17 00:00:00 2001
From: cTn <ctndesigner@gmail.com>
Date: Sat, 12 Apr 2014 14:55:20 +0200
Subject: [PATCH] initial implementation of request delay balancer

---
 js/request_balancer.js | 18 ++++++++++++++++++
 main.html              |  1 +
 main.js                |  6 ++++++
 3 files changed, 25 insertions(+)
 create mode 100644 js/request_balancer.js

diff --git a/js/request_balancer.js b/js/request_balancer.js
new file mode 100644
index 00000000..490ddee7
--- /dev/null
+++ b/js/request_balancer.js
@@ -0,0 +1,18 @@
+function request_delay_balancer(refresh_period) {
+    this.balance_to = refresh_period;
+    this.request_t = 0;
+    this.finished_t = 0;
+}
+
+request_delay_balancer.prototype.requested = function() {
+    this.request_t = millitime();
+};
+
+request_delay_balancer.prototype.finished = function() {
+    this.finished_t = millitime();
+};
+
+request_delay_balancer.prototype.estimate = function() {
+    var estimate = this.balance_to - (this.finished_t - this.request_t);
+    return (estimate > 0) ? estimate : 0;
+};
\ No newline at end of file
diff --git a/main.html b/main.html
index 5a407653..46f8c030 100644
--- a/main.html
+++ b/main.html
@@ -26,6 +26,7 @@
         <script type="text/javascript" src="./js/port_usage.js"></script>
         <script type="text/javascript" src="./js/serial.js"></script>
         <script type="text/javascript" src="./js/gui.js"></script>
+        <script type="text/javascript" src="./js/request_balancer.js"></script>
         <script type="text/javascript" src="./js/serial_backend.js"></script>
         <script type="text/javascript" src="./js/data_storage.js"></script>
         <script type="text/javascript" src="./js/msp.js"></script>
diff --git a/main.js b/main.js
index 2873f35d..4c410633 100644
--- a/main.js
+++ b/main.js
@@ -181,6 +181,12 @@ function microtime() {
     return now;
 }
 
+function millitime() {
+    var now = new Date().getTime();
+
+    return now;
+}
+
 /*
 function add_custom_spinners() {
     var spinner_element = '<div class="spinner"><div class="up"></div><div class="down"></div></div>';