$logdate = $logdate2 = 0;
if (file_exists($logfile)) {
$logdate = filemtime($logfile);
}
if (file_exists($logfile2)) {
$logdate2 = filemtime($logfile2);
}
$cachedate = $clusterfile->mtime();
if ($cachedate >= $logdate && $cachedate >= $logdate2) {
$cachefound = true;
$clusterfile->fetch();
}
}
if (!$cachefound) {
$scale = 60;
$scalenames = array(60 => 'minute', 60 * 60 => 'hour', 60 * 60 * 24 => 'day');
// *** Parse storage.log files ***
$data = ezLogsGrapher::asum(ezLogsGrapher::parseLog($logfile, $scale), ezLogsGrapher::parseLog($logfile2, $scale));
ksort($data);
// *** build graph and store it ***
$graphname = sysInfoTools::ezpI18ntr('SysInfo', 'files per ' . $scalenames[$scale]);
$graph = ezLogsGrapher::graph($data, $graphname, $scale);
if ($graph != false) {
$clusterfile->fileStoreContents($cachefile, $graph);
} else {
$errormsg = ezLogsGrapher::lastError();
}
}
// *** output ***
$tpl->setVariable('graphsource', $cachefile);
$tpl->setVariable('errormsg', $errormsg);
/**
* create graph via ezc/gd2
* @todo verify availability of gd2?
* @todo improve layout: col. width, x axis labels, etc...
* @todo if zetacomponent graph is not there, create an error image using gd
*/
static function graph($data, $dataname, $scale = 60)
{
$content = false;
self::$lastError = '';
$times = array_keys($data);
$min = $times[0];
$max = end($times);
if (!class_exists('ezcGraphBarChart')) {
$errormsg = "Error while rendering graph: missing Zetacomponents Graph library";
self::$lastError = $errormsg;
eZDebug::writeError($errormsg);
return false;
}
$graph = new ezcGraphBarChart();
$locale = eZLocale::instance();
$graph->title = "From " . $locale->formatShortDateTime($min) . " to " . $locale->formatShortDateTime($max);
//$graph->xAxis->label = "From " . $locale->formatShortDateTime( $min ) . " to " . $locale->formatShortDateTime( $max );
$graph->options->font->maxFontSize = 10;
$graph->palette = new ezcGraphPaletteEzBlue();
$graph->yAxis->label = $dataname;
$graph->yAxis->min = 0;
$graph->legend = false;
// width of bar charts is not calculated correctly by DateAxis
//$graph->xAxis = new ezcGraphChartElementDateAxis();
//$graph->xAxis->interval = $scale;
$graph->xAxis = new ezcGraphChartElementNumericAxis();
$graph->xAxis->min = $min - $scale / 2;
$graph->xAxis->max = $max + $scale / 2;
$graph->xAxis->labelCallback = 'calcChurnLabel';
$graph->data[$dataname] = new ezcGraphArrayDataSet($data);
$graph->driver = new ezcGraphGdDriver2();
$graph->driver->options->imageFormat = IMG_JPEG;
// pick a font that is delivered along with ezp
$graph->options->font = 'design/standard/fonts/arial.ttf';
try {
$ok = ob_start();
$graph->render(600, 400, 'php://stdout');
$content = ob_get_clean();
//$clusterfile->fileStoreContents( $cachefile, $content );
} catch (exception $e) {
$errormsg = "Error while rendering graph: " . $e->getMessage();
self::$lastError = $errormsg;
eZDebug::writeError($errormsg);
}
return $content;
}
