111 lines
3.3 KiB
JavaScript
111 lines
3.3 KiB
JavaScript
/**
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* W3TC stats widgets Google Charts driver.
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*
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* @file Google Charts driver for W3TC dashboard stats widgets.
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* @author W3TC.
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* @version 1.0
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* @since X.X.X
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*/
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jQuery(document).ready(function($) {
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google.charts.load('current', {packages: ['corechart', 'line']});
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google.charts.setOnLoadCallback(load);
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// Interval to refresh stats widgets every 60 seconds.
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setInterval(function () {
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load();
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}, 60000);
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// Refresh charts on resize.
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jQuery(window).resize(function(){
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load();
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});
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// Load method for stat charts. Fires on document ready, window resize, and on 60 second interval.
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function load() {
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$.getJSON(
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ajaxurl + '?action=w3tc_ajax&_wpnonce=' + w3tc_nonce + '&w3tc_action=ustats_get',
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function(data) {
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if(! data.period.seconds){
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$('#w3tc_page_cache').addClass('w3tc_none');
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$('#w3tc_object_cache').addClass('w3tc_none');
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$('#w3tc_database_cache').addClass('w3tc_none');
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return;
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}
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processed_data = preprocess_data(data);
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draw_charts(processed_data);
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}
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);
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}
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// Preprocesses statistics data for chart use.
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/**
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* @param {array} data Statistics data.
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* @returns {array} Statistics data in format required for Google charts.
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*/
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function preprocess_data(data){
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var processed_data = {
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'page_cache':{'data':[],'color':'#6f9654'},
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'object_cache':{'data':[],'color':'#e2431e'},
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'database_cache':{'data':[],'color':'#43459d'}
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};
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for( var i=40; i<data.history.length; i++){
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var entry = data.history[i];
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var timestamp = dateFormat(new Date(parseInt(entry.timestamp_start) * 1000));
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processed_data['page_cache']['data'].push([timestamp,Number(entry.php_requests_pagecache_hit)]);
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processed_data['object_cache']['data'].push([timestamp,Number(entry.objectcache_get_hits)]);
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processed_data['database_cache']['data'].push([timestamp,Number(entry.dbcache_calls_hits)]);
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}
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return processed_data;
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}
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// Draws the stats charts.
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/**
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* @param {array} data - Preprocessed statistics data.
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*/
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function draw_charts(data){
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for ( var key in data ) {
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var chart_data = google.visualization.arrayToDataTable(data[key]['data'],true);
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var chart_options = {
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series:{0:{color:data[key]['color']}},
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legend:{position:'none'},
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};
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if(document.getElementById(key + '_chart')){
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var chart = new google.charts.Line(document.getElementById(key + '_chart'));
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chart.draw(chart_data, chart_options);
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}
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};
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}
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// Formats a timestamp into a human readable string.
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/**
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* @param {Object} d Timestamp.
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* @returns {string} Human readable date/time string.
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*/
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function dateFormat(d){
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return ("0" + d.getUTCHours()).slice(-2) + ":" + ("0" + d.getUTCMinutes()).slice(-2);
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}
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// Time since last refresh.
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var seconds_timer_id;
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// Interval for the stats refresh.
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/**
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* @param {Number} new_seconds_till_refresh Interval to trigger refresh.
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*/
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function setRefresh(new_seconds_till_refresh) {
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clearTimeout(seconds_timer_id);
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var seconds_till_refresh = new_seconds_till_refresh;
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seconds_timer_id = setInterval(function () {
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seconds_till_refresh--;
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if (seconds_till_refresh <= 0) {
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clearInterval(seconds_timer_id); // Change clearTimeout to clearInterval here
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seconds_timer_id = null;
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load();
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setRefresh(new_seconds_till_refresh); // Restart the timer after calling load()
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return;
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}
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}, 1000);
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}
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});
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