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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Cache\DataCollector;
use Symfony\Component\Cache\Adapter\TraceableAdapter;
use Symfony\Component\Cache\Adapter\TraceableAdapterEvent;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpKernel\DataCollector\DataCollector;
use Symfony\Component\HttpKernel\DataCollector\LateDataCollectorInterface;
/**
* @author Aaron Scherer <aequasi@gmail.com>
* @author Tobias Nyholm <tobias.nyholm@gmail.com>
*
* @final
*/
class CacheDataCollector extends DataCollector implements LateDataCollectorInterface
{
/**
* @var TraceableAdapter[]
*/
private array $instances = [];
public function addInstance(string $name, TraceableAdapter $instance): void
{
$this->instances[$name] = $instance;
}
public function collect(Request $request, Response $response, \Throwable $exception = null): void
{
$empty = ['calls' => [], 'adapters' => [], 'config' => [], 'options' => [], 'statistics' => []];
$this->data = ['instances' => $empty, 'total' => $empty];
foreach ($this->instances as $name => $instance) {
$this->data['instances']['calls'][$name] = $instance->getCalls();
$this->data['instances']['adapters'][$name] = get_debug_type($instance->getPool());
}
$this->data['instances']['statistics'] = $this->calculateStatistics();
$this->data['total']['statistics'] = $this->calculateTotalStatistics();
}
public function reset(): void
{
$this->data = [];
foreach ($this->instances as $instance) {
$instance->clearCalls();
}
}
public function lateCollect(): void
{
$this->data['instances']['calls'] = $this->cloneVar($this->data['instances']['calls']);
}
public function getName(): string
{
return 'cache';
}
/**
* Method returns amount of logged Cache reads: "get" calls.
*/
public function getStatistics(): array
{
return $this->data['instances']['statistics'];
}
/**
* Method returns the statistic totals.
*/
public function getTotals(): array
{
return $this->data['total']['statistics'];
}
/**
* Method returns all logged Cache call objects.
*/
public function getCalls(): mixed
{
return $this->data['instances']['calls'];
}
/**
* Method returns all logged Cache adapter classes.
*/
public function getAdapters(): array
{
return $this->data['instances']['adapters'];
}
private function calculateStatistics(): array
{
$statistics = [];
foreach ($this->data['instances']['calls'] as $name => $calls) {
$statistics[$name] = [
'calls' => 0,
'time' => 0,
'reads' => 0,
'writes' => 0,
'deletes' => 0,
'hits' => 0,
'misses' => 0,
];
/** @var TraceableAdapterEvent $call */
foreach ($calls as $call) {
++$statistics[$name]['calls'];
$statistics[$name]['time'] += ($call->end ?? microtime(true)) - $call->start;
if ('get' === $call->name) {
++$statistics[$name]['reads'];
if ($call->hits) {
++$statistics[$name]['hits'];
} else {
++$statistics[$name]['misses'];
++$statistics[$name]['writes'];
}
} elseif ('getItem' === $call->name) {
++$statistics[$name]['reads'];
if ($call->hits) {
++$statistics[$name]['hits'];
} else {
++$statistics[$name]['misses'];
}
} elseif ('getItems' === $call->name) {
$statistics[$name]['reads'] += $call->hits + $call->misses;
$statistics[$name]['hits'] += $call->hits;
$statistics[$name]['misses'] += $call->misses;
} elseif ('hasItem' === $call->name) {
++$statistics[$name]['reads'];
foreach ($call->result ?? [] as $result) {
++$statistics[$name][$result ? 'hits' : 'misses'];
}
} elseif ('save' === $call->name) {
++$statistics[$name]['writes'];
} elseif ('deleteItem' === $call->name) {
++$statistics[$name]['deletes'];
}
}
if ($statistics[$name]['reads']) {
$statistics[$name]['hit_read_ratio'] = round(100 * $statistics[$name]['hits'] / $statistics[$name]['reads'], 2);
} else {
$statistics[$name]['hit_read_ratio'] = null;
}
}
return $statistics;
}
private function calculateTotalStatistics(): array
{
$statistics = $this->getStatistics();
$totals = [
'calls' => 0,
'time' => 0,
'reads' => 0,
'writes' => 0,
'deletes' => 0,
'hits' => 0,
'misses' => 0,
];
foreach ($statistics as $name => $values) {
foreach ($totals as $key => $value) {
$totals[$key] += $statistics[$name][$key];
}
}
if ($totals['reads']) {
$totals['hit_read_ratio'] = round(100 * $totals['hits'] / $totals['reads'], 2);
} else {
$totals['hit_read_ratio'] = null;
}
return $totals;
}
}
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