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