memcron 0.6.7-Bret index.php

<?php
$version = '0.6.7-Bret';

/*////////////////////////////////////////////////////////////////////////////////////

   memCron - DreamHost PS Memory Manager

   Author   : Yaosan Yeo
   Version  : 0.6
   Date     : 22 March 2010
   URL      : http://memcron.com/

   History  :
    0.6 [2010.03.22] - Added: Support for target memory and cached memory
                     - Added: Version info to the footer
                     - Changed: Now display http server name instead of actual PS name for extra security

    0.4.1 [2009.08.10] - Added: favicon for easier recognition of memCron tab in browser
                       - Fixed: Proper max axis value for "Used + Total Memory"
                       - Fixed: Memory calculation due to the 2x increase of swap memory by DreamHost

    0.4 [2009.06.28] - Changed: Tooltip for the resources usage graph is now cuter i.e. in yellow! :)
                     - Fixed: Total memory is now displayed correctly on the resources graph by accounting for max swap memory, which is capped at 450MB

    0.3 [2009.05.27] - Added: Customizable chart formatting (y-axis) for resource usage graph
                     - Added: New "css" folder to hold css stylesheets (no more css snippet in html head)
                     - Added: Charset information to http header
                     - Added: Generator meta information to XHTML head section
                     - Changed: Chart title changed from "Memory Usage" to "Resources Usage"
                     - Changed: #memchart width increased from 80% to 93%
                     - Fixed: Tooltip fade in now works better in IE (remove filter to restore ClearType)

    0.2 [2009.05.03] - Nothing changed.

    0.1 [2009.04.30] - Initial release

////////////////////////////////////////////////////////////////////////////////////*/

header("Cache-Control: no-cache, must-revalidate"); // HTTP/1.1
header("Expires: Sat, 26 Jul 1997 05:00:00 GMT"); // Date in the past
header("Content-type: text/html; charset=iso-8859-1");

//
// get configuration settings
//

$config = dirname(__FILE__) . "/config.cfg";

$fp = fopen($config, 'r') or die ("Can't open config file!");

$settings = array();

while ( $line = fgets($fp) ) {
    if ( substr($line, 0, 1) == '$') {
        $s = preg_split('/[\s]+=[\s]+/', $line);

        $key = substr($s[0],1);
        foreach( preg_split('/[";]+/', $s[1]) as $v ) {
            $v = trim($v);
            if ( !empty($v) ) {
                $value = $v;
            }
        }
        $settings[$key] = $value;
    }
}

fclose($fp);

// $server_name = preg_replace( '/(\w+\.)?([\w-]+)\.(\w+)$/i', '$2.$3', $_SERVER['SERVER_NAME'] );
$server_name = $_SERVER['SERVER_NAME'];
$ps = php_uname('n');
$num_data_max = $settings['num_data_csv'];

$dateTimeZone = new DateTimeZone("America/Los_Angeles");
$dateTime = new DateTime("now", $dateTimeZone);
$timeOffset = $dateTimeZone->getOffset($dateTime);
$gmt_offset = $timeOffset/3600;
//$gmt_offset = -7;
$num_data_default = 300;
$log = dirname(__FILE__) . "/logs/$ps.csv";

//
// get form parameters
//

$axis = array( "mem", "memt", "mem_used", "mem_free", "mem_total", "cpu_load", "mem_mean", "mem_stdev", "mem_used_tolerance", "mem_free_tolerance", "downsize_count", "mem_target", "mem_cached" );

$num_data = ( is_numeric($_GET['n']) ) ? $_GET['n'] : $num_data_default;
$y1 = ( isset($_GET['y1']) && in_array($_GET['y1'], $axis) ) ? $_GET['y1'] : "memt";
$y2 = ( isset($_GET['y2']) && in_array($_GET['y2'], $axis) ) ? $_GET['y2'] : "cpu_load";

if ( $num_data > $num_data_max ) {
    $num_data = $num_data_max;
} else if ( $num_data < 1 ) {
    $num_data = 1;
}

$fp = fopen($log, 'r') or die ("Can't open log file!");

$unix_time = array();
$mem_total = array();
$mem_used = array();
$mem_free = array();
$cpu_load = array();
$mem_mean = array();
$mem_stdev = array();
$mem_used_tolerance = array();
$mem_free_tolerance = array();
$downsize_count = array();
$mem_target = array();
$mem_cached = array();

// generate data array from log file
while ( $y = trim( fgets($fp) ) ) {
    list($t,$mt,$mu,$cpu,$mm,$ms,$mut,$mft,$dc,$mtg,$mc) = explode(",", $y);
    $t = ( $t + $gmt_offset*3600 ) * 1000;

    array_push( $unix_time, $t );
    array_push( $mem_total, $mt );
    array_push( $mem_used, $mu );
    array_push( $mem_free, $mt-$mu-$mc );
    array_push( $cpu_load, $cpu );
    array_push( $mem_mean, $mm );
    array_push( $mem_stdev, $ms );
    array_push( $mem_used_tolerance, $mut );
    array_push( $mem_free_tolerance, $mft );
    array_push( $downsize_count, $dc );
    array_push( $mem_target, $mtg );
    array_push( $mem_cached, $mc );
}

fclose($fp);

// slice array based on "n"
function sliceArray($arg, $num) {
    return array_slice( $arg, count($arg) - $num );
}

if ( $num_data < count($mem_total) ) {
    $unix_time = sliceArray( $unix_time, $num_data );
    $mem_total = sliceArray( $mem_total, $num_data );
    $mem_used = sliceArray( $mem_used, $num_data );
    $mem_free = sliceArray( $mem_free, $num_data );
    $cpu_load = sliceArray( $cpu_load, $num_data );
    $mem_mean = sliceArray( $mem_mean, $num_data );
    $mem_stdev = sliceArray( $mem_stdev, $num_data );
    $mem_used_tolerance = sliceArray( $mem_used_tolerance, $num_data );
    $mem_free_tolerance = sliceArray( $mem_free_tolerance, $num_data );
    $downsize_count = sliceArray( $downsize_count, $num_data );
    $mem_target = sliceArray( $mem_target, $num_data );
    $mem_cached = sliceArray( $mem_cached, $num_data );
} else {
    $num_data = count($mem_total);
}

// get option values for y axis
function getOptions($axis) {
    global $mem_total, $mem_used, $mem_free,
           $cpu_load, $mem_mean, $mem_stdev,
           $mem_used_tolerance, $mem_free_tolerance, $downsize_count,
           $mem_target, $mem_cached;
    $min = 0;
    $max = max($mem_total);
    $max = ($max < 450) ? $max * 2 : $max + 450;
    switch ($axis) {
        case "mem":
            $unit = "mb";
            break;
        case "memt":
            $max = max( $max, max($mem_target) );
            $unit = "mb";
            break;
        case "mem_total":
            $unit = "mb";
            break;
        case "mem_used":
            $unit = "mb";
            break;
        case "mem_free":
            $unit = "mb";
            break;
        case "cpu_load":
            $max = max( max($cpu_load), 3 );
            $unit = " load";
            break;
        case "mem_mean":
            $max = max($mem_mean);
            $min = min($mem_mean);
            $diff = round(($max-$min)*0.1);
            $max += $diff;
            $min -= $diff;
            $unit = "mb";
            break;
        case "mem_stdev":
            $max = max($mem_stdev);
            $min = min($mem_stdev);
            $diff = round(($max-$min)*0.1);
            $max += $diff;
            $min -= $diff;
            $unit = "mb";
            break;
        case "mem_used_tolerance":
            $max = max($mem_used_tolerance);
            $unit = "mb";
            break;
        case "mem_free_tolerance":
            $max = max($mem_free_tolerance);
            $unit = "mb";
            break;
        case "downsize_count":
            $max = max($downsize_count);
            $unit = " count";
            break;
        case "mem_target":
            $max = max( $max, max($mem_target) );
            $unit = "mb";
            break;
        case "mem_cached":
            $unit = "mb";
            break;
    }
    return array($max, $min, $unit);
}

$y1_options = getOptions($y1);
$y2_options = getOptions($y2);

$y1_unit = array_pop($y1_options);
$y2_unit = array_pop($y2_options);

$y1_min = array_pop($y1_options);
$y2_min = array_pop($y2_options);

$y1_max = array_pop($y1_options);
$y2_max = array_pop($y2_options);


// construct data array for js
function getData($axis) {
    global $mem_total, $mem_used, $mem_free,
           $cpu_load, $mem_mean, $mem_stdev,
           $mem_used_tolerance, $mem_free_tolerance, $downsize_count,
           $mem_target, $mem_cached;

    switch ($axis) {
        case "mem":
            array_push( $mem_used, "Used Memory" );
            array_push( $mem_total, "Total Memory" );
            $data = array( $mem_used, $mem_total );
            array_pop($mem_used);
            array_pop($mem_total);
            break;
        case "memt":
            array_push( $mem_used, "Used Memory" );
            array_push( $mem_total, "Total Memory" );
            array_push( $mem_target, "Target Memory");
            $data = array( $mem_used, $mem_total, $mem_target );
            array_pop($mem_used);
            array_pop($mem_total);
            array_pop($mem_target);
            break;
        case "mem_total":
            array_push( $mem_total, "Total Memory" );
            $data = $mem_total;
            array_pop($mem_total);
            break;
        case "mem_used":
            array_push( $mem_used, "Used Memory" );
            $data = $mem_used;
            array_pop($mem_used);
            break;
        case "mem_free":
            array_push( $mem_free, "Free Memory" );
            $data = $mem_free;
            array_pop($mem_free);
            break;
        case "cpu_load":
            array_push( $cpu_load, "CPU Load" );
            $data = $cpu_load;
            array_pop($cpu_load);
            break;
        case "mem_mean":
            array_push( $mem_mean, "Mean (used memory)" );
            $data = $mem_mean;
            array_pop($mem_mean);
            break;
        case "mem_stdev":
            array_push( $mem_stdev, "Standard Deviation (used memory)" );
            $data = $mem_stdev;
            array_pop($mem_stdev);
            break;
        case "mem_used_tolerance":
            array_push( $mem_used_tolerance, "Tolerance (used memory)" );
            $data = $mem_used_tolerance;
            array_pop($mem_used_tolerance);
            break;
        case "mem_free_tolerance":
            array_push( $mem_free_tolerance, "Tolerance (free memory)" );
            $data = $mem_free_tolerance;
            array_pop($mem_free_tolerance);
            break;
        case "downsize_count":
            array_push( $downsize_count, "Downsize Count");
            $data = $downsize_count;
            array_pop($downsize_count);
            break;
        case "mem_target":
            array_push( $mem_target, "Target Memory");
            $data = $mem_target;
            array_pop($mem_target);
            break;
        case "mem_cached":
            array_push( $mem_cached, "Cached Memory");
            $data = $mem_cached;
            array_pop($mem_cached);
            break;
    }
    return $data;
}

$d1 = getData($y1);
if ( is_array($d1[0]) ) {
    $d5 = $d1[2];
    $d2 = $d1[1];
    $d1 = $d1[0];
}

$d3 = getData($y2);
if ( is_array($d3[0]) ) {
    $d6 = $d3[2];
    $d4 = $d3[1];
    $d3 = $d3[0];
}

// get label
$d1_label = array_pop($d1);
if ($d2) { $d2_label = array_pop($d2); }
if ($d5) { $d5_label = array_pop($d5); }

$d3_label = array_pop($d3);
if ($d4) { $d4_label = array_pop($d4); }
if ($d6) { $d6_label = array_pop($d6); }

$i = 0;
foreach ( $unix_time as $t ) {
    $d1[$i] = "[$t," . $d1[$i]. "]";
    if ($d2) { $d2[$i] = "[$t," . $d2[$i]. "]"; }
    if ($d5) { $d5[$i] = "[$t," . $d5[$i]. "]"; }

    $d3[$i] = "[$t," . $d3[$i]. "]";
    if ($d4) { $d4[$i] = "[$t," . $d4[$i]. "]"; }
    if ($d6) { $d6[$i] = "[$t," . $d6[$i]. "]"; }
    $i++;
}

// get line width
$line_width = 3;

if ( $num_data >= 200 ) {
    $line_width = 3 - ( $num_data - 200 ) / 200;
    $line_width = max(1, $line_width);
    $line_width = round($line_width, 0);
}
?>
<!DOCTYPE html
     PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
    <meta name="robots" content="noindex" />
    <meta name="generator" content="memCron <?php echo $version; ?>" />

    <title>Resources Usage for <?php echo $ps; ?> &laquo; memCron</title>
    <link rel="icon" href="/favicon.ico" />

    <!--[if IE]><script language="javascript" type="text/javascript" src="js/excanvas.pack.js"></script><![endif]-->
    <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"></script>
    <script type="text/javascript" src="js/jquery.flot.pack.js"></script>
    <script type="text/javascript" src="js/thickbox-compressed.js"></script>

    <link rel="stylesheet" href="css/memcron.css" type="text/css" media="screen" />
    <link rel="stylesheet" href="css/thickbox.css" type="text/css" media="screen" />
</head>
<body id="memcron">
    <h1>Resources Usage for <?php echo "$server_name [$ps]"; ?></h1>
    <div id="content">
        <div id="memchart"></div>
        <noscript><p>Please turn on Javascript to see the graph</p></noscript>
        <form method="get" action="./">
            <p>
                <input type="hidden" name="y1" id="y1" value="<?php echo $y1 ?>" />
                <input type="hidden" name="y2" id="y2" value="<?php echo $y2 ?>" />
                Display <input type="text" name="n" id="n" value="<?php echo $num_data ?>" maxlength="<?php echo floor(log10($num_data_max)+1) ?>"></input> data points<a href="#TB_inline?&amp;height=220&amp;width=350&amp;inlineId=customize&amp;modal=true" class="thickbox"><img src="images/chart.png" alt="Customize chart" /></a>
            </p>
        </form>
    </div>
    <div id="customize" style="display:none;">
        <h2>Chart Formatting</h2>
        <p>
            y1 axis:
            <select name="y1axis" id="y1axis">
              <option value="mem">Used & Total Memory</option>
              <option value="memt" selected="selected">Used, Total & Target Memory</option>
              <option value="mem_used">Used Memory</option>
              <option value="mem_free">Free Memory</option>
              <option value="mem_total">Total Memory</option>
              <option value="cpu_load">CPU Load</option>
              <option value="mem_mean">Mean (used memory)</option>
              <option value="mem_stdev">Standard Deviation (used memory)</option>
              <option value="mem_used_tolerance">Tolerance (used memory)</option>
              <option value="mem_free_tolerance">Tolerance (free memory)</option>
              <option value="downsize_count">Downsize Count</option>
              <option value="mem_target">Target Memory</option>
              <option value="mem_cached">Cached Memory</option>
            </select>
        </p>
        <p>
            y2 axis:
            <select name="y2axis" id="y2axis">
              <option value="mem">Used & Total Memory</option>
              <option value="memt">Used, Total & Target Memory</option>
              <option value="mem_used">Used Memory</option>
              <option value="mem_free">Free Memory</option>
              <option value="mem_total">Total Memory</option>
              <option value="cpu_load">CPU Load</option>
              <option value="mem_mean">Mean (used memory)</option>
              <option value="mem_stdev">Standard Deviation (used memory)</option>
              <option value="mem_used_tolerance">Tolerance (used memory)</option>
              <option value="mem_free_tolerance">Tolerance (free memory)</option>
              <option value="downsize_count">Downsize Count</option>
              <option value="mem_target">Target Memory</option>
              <option value="mem_cached">Cached Memory</option>
            </select>
        </p>
        <p>
            <button type="submit" id="ok" onclick="submitForm()">OK</button>
            <button id="cancel" onclick="tb_remove()">Cancel</button>
        </p>
        <script type="text/javascript">
            $("#y1axis option[value='<?php echo $y1 ?>']").attr('selected', 'selected');
            $("#y2axis option[value='<?php echo $y2 ?>']").attr('selected', 'selected');
        </script>
    </div>
    <p class="footer">
        Powered by <a href="http://memcron.com/" title="memCron - DreamHost PS Memory Manager"><img src="images/logo.png" alt="memCron" /></a> <?php echo $version; ?>
    </p>
    <script type="text/javascript">
    //<![CDATA[
    (function($) {
        $.fn.customFadeIn = function(speed, callback) {
            $(this).fadeIn(speed, function() {
                if(jQuery.browser.msie)
                    $(this).get(0).style.removeAttribute('filter');
                if(callback != undefined)
                    callback();
            });
        };
        $.fn.customFadeOut = function(speed, callback) {
            $(this).fadeOut(speed, function() {
                if(jQuery.browser.msie)
                    $(this).get(0).style.removeAttribute('filter');
                if(callback != undefined)
                    callback();
            });
        };
    })(jQuery);

    function showTooltip(x, y, contents) {
        $('<div id="tooltip">' + contents + '<\/div>').css( {
            position: 'absolute',
            display: 'none',
            top: y + 7,
            left: x + 7,
            border: '4px solid #f9e98e',
            padding: '10px 12px',
            color: '#95693d',
            'background-color': '#fbf6aa',
            opacity: 0.99
        }).appendTo("body").customFadeIn(200);
    }

    var previousPoint = null;
    $("#memchart").bind("plothover", function (event, pos, item) {
        if (item) {
            if (previousPoint != item.datapoint) {
                previousPoint = item.datapoint;

                $("#tooltip").remove();
                var dt = new Date();
                var x = new Date(item.datapoint[0] + dt.getTimezoneOffset()*60000),
                    y = item.datapoint[1];

                var h = x.getHours();
                var m = x.getMinutes();

                if (h < 10) { h = "0" + h; }
                if (m < 10) { m = "0"+ m; }
                x = h + ":" + m;

                showTooltip(item.pageX, item.pageY,
                            item.series.label + " at " + x + " = " + y);
            }
        }
        else {
            $("#tooltip").remove();
            previousPoint = null;
        }
    });

    function submitForm() {
        if( $("#y1axis :selected").val() == $("#y2axis :selected").val() ) {
            alert("Data for y1 axis and y2 axis cannot be the same!");
        } else {
            tb_remove();
            $("#y1").val( $("#y1axis").val() );
            $("#y2").val( $("#y2axis").val() );
            $("form").submit();
        }
    }

    function resizeGraph() {
        var w = Math.round($(window).width()*0.93);
        var h = Math.round($(window).height()-263);
        if (w < 350) { w = 350; }
        if (h < 200) { h = 200; }
        $('#memchart').width(w);
        $('#memchart').height(h);
        $.plot($("#memchart"), [ <?php echo "d1" . ( (!empty($d2)) ? ", d2" : "" ) . ", d3" . ( (!empty($d4)) ? ", d4" : "" ) . ( (!empty($d5)) ? ", d5" : "" ) . ( (!empty($d6)) ? ", d6" : "" ); ?> ], options );
    }

    var d1 = {
        label: "<?php echo $d1_label ?>",
        data: [ <?php echo implode( ",", $d1 ); ?> ],
        yaxis: 1
    };
<?php if ($d2) { ?>
    var d2 = {
        label: "<?php echo $d2_label ?>",
        data: [ <?php echo implode( ",", $d2 ); ?> ],
        yaxis: 1
    };
<?php } ?>
<?php if ($d5) { ?>
    var d5 = {
        label: "<?php echo $d5_label ?>",
        data: [ <?php echo implode( ",", $d5 ); ?> ],
        yaxis: 1
    };
<?php } ?>
    var d3 = {
        label: "<?php echo $d3_label ?>",
        data: [ <?php echo implode( ",", $d3 ); ?> ],
        yaxis: 2
    };
<?php if ($d4) { ?>
    var d4 = {
        label: "<?php echo $d4_label ?>",
        data: [ <?php echo implode( ",", $d4 ); ?> ],
        yaxis: 2
    };
<?php } ?>
<?php if ($d6) { ?>
    var d6 = {
        label: "<?php echo $d6_label ?>",
        data: [ <?php echo implode( ",", $d6 ); ?> ],
        yaxis: 2
    };
<?php } ?>

    var options = {
        lines: { show: true, lineWidth: <?php echo $line_width ?> },
        points: { show: <?php echo ($line_width >= 3) ? "true" : "false"; ?> },
        selection: { mode: "xy" },
        legend: { position: 'nw' },
        grid: { hoverable: true, clickable: false },
        shadowSize: 3,
        xaxis: { mode: "time", timeformat: "%H:%M" },
        yaxis: { min: <?php echo $y1_min ?>, max: <?php echo $y1_max ?>, tickFormatter: function (v, axis) { return v.toFixed(axis.tickDecimals) + "<?php echo $y1_unit ?>" } },
        y2axis: { min: <?php echo $y2_min ?>, max: <?php echo $y2_max ?>, tickFormatter: function (v, axis) { return v.toFixed(axis.tickDecimals) + "<?php echo $y2_unit ?>" } }
    };

    $(window).resize(function() { resizeGraph(); });

    $(document).ready(function() {
        resizeGraph();
    });
    //]]>
    </script>
</body>
</html>