[ADDED] Possibility to disable navbar live updates

* Added new admin options: disable_navbar and disable_navbar_api
* Removes LIVE STATS from navigation list
* Removes live updates on Pool General Statistics page
* Added system load checks to getnavbardata API call

This will help to decrease load on high-volume servers at the cost of
losing live status.

Fixes #1014 once merged.

public/include/config/admin_settings.inc.php

@@ -287,6 +287,20 @@ $aSettings['system'][] = array(
   'name' => 'disable_dashboard_api', 'value' => $setting->getValue('disable_dashboard_api'),
   'tooltip' => 'Disable dashboard API entirely to reduce server load.'
 );
+$aSettings['system'][] = array(
+  'display' => 'Disable Live Navbar', 'type' => 'select',
+  'options' => array( 0 => 'No', 1 => 'Yes'),
+  'default' => 0,
+  'name' => 'disable_navbar', 'value' => $setting->getValue('disable_navbar'),
+  'tooltip' => 'Disable live updates on the navbar to reduce server load.'
+);
+$aSettings['system'][] = array(
+  'display' => 'Disable Navbar API', 'type' => 'select',
+  'options' => array( 0 => 'No', 1 => 'Yes'),
+  'default' => 0,
+  'name' => 'disable_navbar_api', 'value' => $setting->getValue('disable_navbar_api'),
+  'tooltip' => 'Disable navbar API entirely to reduce server load. Used in pool stats and navbar mini stats.'
+);
 $aSettings['system'][] = array(
   'display' => 'Disable TX Summaries', 'type' => 'select',
   'options' => array( 0 => 'No', 1 => 'Yes'),

public/include/pages/api/getnavbardata.inc.php

@@ -3,8 +3,19 @@
 // Make sure we are called from index.php
 if (!defined('SECURITY')) die('Hacking attempt');
 
-// Check if the API is activated
+// Check if the system is enabled
-$api->isActive();
+if ($setting->getValue('disable_navbar_api')) {
+  echo $api->get_json(array('error' => 'disabled'));
+  die();
+}
+
+// System load check
+if ($load = @sys_getloadavg()) {
+  if (isset($config['system']['load']['max']) && $load[0] > $config['system']['load']['max']) {
+    header('HTTP/1.1 503 Too busy, try again later');
+    die('Server too busy. Please try again later.');
+  }
+}
 
 // Fetch RPC information
 if ($bitcoin->can_connect() === true) {

public/include/smarty_globals.inc.php

@@ -65,6 +65,8 @@ $aGlobal = array(
   'price' => $setting->getValue('price'),
   'disable_payouts' => $setting->getValue('disable_payouts'),
   'config' => array(
+    'disable_navbar' => $setting->getValue('disable_navbar'),
+    'disable_navbar_api' => $setting->getValue('disable_navbar_api'),
     'algorithm' => $config['algorithm'],
     'target_bits' => $config['target_bits'],
     'accounts' => $config['accounts'],

public/templates/mpos/global/navigation.tpl

@@ -88,6 +88,7 @@
     {if $smarty.session.AUTHENTICATED|default:"0" == 1}
      <br />
     {else}
+    {if !$GLOBAL.website.api.disabled && !$GLOBAL.config.disable_navbar && !$GLOBAL.config.disable_navbar_api}
     <ul>
      <center>
       <div style="display: inline-block;">
@@ -100,3 +101,4 @@
       <hr/>
     {include file="global/navjs.tpl"}
     {/if}
+    {/if}

public/templates/mpos/global/navjs.tpl

@@ -10,46 +10,43 @@ $(document).ready(function(){
   var storedHashrate=[];
   var storedWorkers=[];
 
-  // Helper to initilize gauges
+  g1 = new JustGage({
-  function initGauges(data) {
+    id: "mr",
+    value: parseFloat({/literal}{$GLOBAL.workers}{literal}).toFixed(0),
+    min: 0,
+    max: Math.round({/literal}{$GLOBAL.workers}{literal} * 2),
+    title: "Miners",
+    gaugeColor: '#6f7a8a',
+    labelFontColor: '#555',
+    titleFontColor: '#555',
+    valueFontColor: '#555',
+    label: "Active Miners",
+    relativeGaugeSize: true,
+    showMinMax: true,
+    shadowOpacity : 0.8,
+    shadowSize : 0,
+    shadowVerticalOffset : 10
+  });
 
-        g1 = new JustGage({
+  g2 = new JustGage({
-            id: "mr",
+    id: "hr",
-            value: parseFloat(data.getnavbardata.data.pool.workers).toFixed(0),
+    value: parseFloat({/literal}{$GLOBAL.hashrate}{literal}).toFixed(2),
-            min: 0,
+    min: 0,
-            max: Math.round(data.getnavbardata.data.pool.workers * 4),
+    max: Math.round({/literal}{$GLOBAL.hashrate}{literal} * 2),
-            title: "Miners",
+    title: "Pool Hashrate",
-            gaugeColor: '#6f7a8a',
+    gaugeColor: '#6f7a8a',
-            labelFontColor: '#555',
+    labelFontColor: '#555',
-            titleFontColor: '#555',
+    titleFontColor: '#555',
-            valueFontColor: '#555',
+    valueFontColor: '#555',
-            label: "Active Miners",
+    label: "{/literal}{$GLOBAL.hashunits.pool}{literal}",
-            relativeGaugeSize: true,
+    relativeGaugeSize: true,
-            showMinMax: true,
+    showMinMax: true,
-            shadowOpacity : 0.8,
+    shadowOpacity : 0.8,
-            shadowSize : 0,
+    shadowSize : 0,
-            shadowVerticalOffset : 10
+    shadowVerticalOffset : 10
-         });
+  });
-
-        g2 = new JustGage({
-            id: "hr",
-            value: parseFloat(data.getnavbardata.data.pool.hashrate).toFixed(2),
-            min: 0,
-            max: Math.round(data.getnavbardata.data.pool.hashrate * 4),
-            title: "Pool Hashrate",
-            gaugeColor: '#6f7a8a',
-            labelFontColor: '#555',
-            titleFontColor: '#555',
-            valueFontColor: '#555',
-            label: "{/literal}{$GLOBAL.hashunits.pool}{literal}",
-            relativeGaugeSize: true,
-            showMinMax: true,
-            shadowOpacity : 0.8,
-            shadowSize : 0,
-            shadowVerticalOffset : 10
-         });
-  }
 
+  {/literal}{if $GLOBAL.config.disable_navbar|default:"0" != 1 && $GLOBAL.config.disable_navbar_api|default:"0" != 1}{literal}
   // Helper to refresh graphs
   function refreshInformation(data) {
     g1.refresh(parseFloat(data.getnavbardata.data.pool.workers).toFixed(0));
@@ -61,14 +58,6 @@ $(document).ready(function(){
     storedHashrate[storedHashrate.length] = [timeNow, data.getnavbardata.data.raw.pool.hashrate];
   }
 
-  // Fetch initial data via Ajax, starts proper gauges to display
-  $.ajax({
-    url: url,
-    async: false, // Run all others requests after this only if it's done
-    dataType: 'json',
-    success: function (data) { initGauges(data); }
-  });
-
   // Our worker process to keep gauges and graph updated
   (function worker() {
     $.ajax({
@@ -81,6 +70,7 @@ $(document).ready(function(){
         setTimeout(worker, {/literal}{($GLOBAL.config.statistics_ajax_refresh_interval * 1000)|default:"1000"}{literal})
       }
   });
+  {/literal}{/if}{literal}
  })();
 });
 {/literal}

public/templates/mpos/statistics/pool/default.tpl

@@ -6,6 +6,6 @@
 
 {include file="statistics/blocks/small_table.tpl" ALIGN="right" SHORT=true}
 
-{if !$GLOBAL.website.api.disabled}
+{if !$GLOBAL.website.api.disabled && !$GLOBAL.config.disable_navbar && !$GLOBAL.config.disable_navbar_api}
 {include file="statistics/js.tpl"}
 {/if}