private function processVariant(Subject $subject, Variant $variant, \DOMElement $subjectEl)
{
$variantEl = $subjectEl->appendElement('variant');
// TODO: These attributes should be on the subject, see
// https://github.com/phpbench/phpbench/issues/307
$variantEl->setAttribute('sleep', $subject->getSleep());
$variantEl->setAttribute('output-time-unit', $subject->getOutputTimeUnit() ?: TimeUnit::MICROSECONDS);
$variantEl->setAttribute('output-time-precision', $subject->getOutputTimePrecision());
$variantEl->setAttribute('output-mode', $subject->getOutputMode() ?: TimeUnit::MODE_TIME);
$variantEl->setAttribute('revs', $variant->getRevolutions());
$variantEl->setAttribute('warmup', $variant->getWarmup());
$variantEl->setAttribute('retry-threshold', $subject->getRetryThreshold());
foreach ($variant->getParameterSet() as $name => $value) {
$this->createParameter($variantEl, $name, $value);
}
if ($variant->hasErrorStack()) {
$errorsEl = $variantEl->appendElement('errors');
foreach ($variant->getErrorStack() as $error) {
$errorEl = $errorsEl->appendElement('error', $error->getMessage());
$errorEl->setAttribute('exception-class', $error->getClass());
$errorEl->setAttribute('code', $error->getCode());
$errorEl->setAttribute('file', $error->getFile());
$errorEl->setAttribute('line', $error->getLine());
}
return;
}
$stats = $variant->getStats();
$stats = iterator_to_array($stats);
$resultClasses = [];
// ensure same order (for testing)
ksort($stats);
foreach ($variant as $iteration) {
$iterationEl = $variantEl->appendElement('iteration');
foreach ($iteration->getResults() as $result) {
// we need to store the class FQNs of the results for deserialization later.
if (!isset($resultClasses[$result->getKey()])) {
$resultClasses[$result->getKey()] = get_class($result);
}
$prefix = $result->getKey();
$metrics = $result->getMetrics();
foreach ($metrics as $key => $value) {
$iterationEl->setAttribute(sprintf('%s-%s', $prefix, str_replace('_', '-', $key)), $value);
}
}
}
$statsEl = $variantEl->appendElement('stats');
foreach ($stats as $statName => $statValue) {
$statsEl->setAttribute($statName, $statValue);
}
foreach ($resultClasses as $resultKey => $classFqn) {
if ($subjectEl->queryOne('ancestor::suite/result[@key="' . $resultKey . '"]')) {
continue;
}
$resultEl = $subjectEl->queryOne('ancestor::suite')->appendElement('result');
$resultEl->setAttribute('key', $resultKey);
$resultEl->setAttribute('class', $classFqn);
}
}