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<?php
/**
* Piwik - free/libre analytics platform
*
* @link http://piwik.org
* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
*/
namespace Piwik\Plugins\Actions\Columns\Metrics;
use Piwik\DataTable;
use Piwik\DataTable\Row;
use Piwik\Metrics;
use Piwik\Metrics\Formatter;
use Piwik\Piwik;
use Piwik\Plugin\ProcessedMetric;
use Piwik\Plugin\Report;
/**
* The average amount of time it takes to generate a page. Calculated as
*
* sum_time_generation / nb_hits_with_time_generation
*
* The above metrics are calculated during archiving. This metric is calculated before
* serving a report.
*/
class AveragePageGenerationTime extends ProcessedMetric
{
public function getName()
{
return 'avg_time_generation';
}
public function getTranslatedName()
{
return Piwik::translate('General_ColumnAverageGenerationTime');
}
public function getDependentMetrics()
{
return array('sum_time_generation', 'nb_hits_with_time_generation');
}
public function getTemporaryMetrics()
{
return array('sum_time_generation');
}
public function compute(Row $row)
{
$sumGenerationTime = $this->getMetric($row, 'sum_time_generation');
$hitsWithTimeGeneration = $this->getMetric($row, 'nb_hits_with_time_generation');
return Piwik::getQuotientSafe($sumGenerationTime, $hitsWithTimeGeneration, $precision = 3);
}
public function format($value, Formatter $formatter)
{
if ($formatter instanceof Formatter\Html
&& !$value
) {
return '-';
} else {
return $formatter->getPrettyTimeFromSeconds($value, $displayAsSentence = true);
}
}
public function beforeCompute($report, DataTable $table)
{
$hasTimeGeneration = array_sum($this->getMetricValues($table, 'sum_time_generation')) > 0;
if (!$hasTimeGeneration
&& $table->getRowsCount() != 0
&& !$this->hasAverageTimeGeneration($table)
) {
// No generation time: remove it from the API output and add it to empty_columns metadata, so that
// the columns can also be removed from the view
$table->filter('ColumnDelete', array(array(
Metrics::INDEX_PAGE_SUM_TIME_GENERATION,
Metrics::INDEX_PAGE_NB_HITS_WITH_TIME_GENERATION,
Metrics::INDEX_PAGE_MIN_TIME_GENERATION,
Metrics::INDEX_PAGE_MAX_TIME_GENERATION,
'sum_time_generation',
'nb_hits_with_time_generation',
'min_time_generation',
'max_time_generation'
)));
if ($table instanceof DataTable) {
$emptyColumns = $table->getMetadata(DataTable::EMPTY_COLUMNS_METADATA_NAME);
if (!is_array($emptyColumns)) {
$emptyColumns = array();
}
$emptyColumns[] = 'sum_time_generation';
$emptyColumns[] = 'avg_time_generation';
$emptyColumns[] = 'min_time_generation';
$emptyColumns[] = 'max_time_generation';
$table->setMetadata(DataTable::EMPTY_COLUMNS_METADATA_NAME, $emptyColumns);
}
}
return $hasTimeGeneration;
}
private function hasAverageTimeGeneration(DataTable $table)
{
return $table->getFirstRow()->getColumn('avg_time_generation') !== false;
}
}
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