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admin/phpMyAdmin/vendor/symfony/cache/DataCollector/CacheDataCollector.php

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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 $instances = [];
+
+    public function addInstance(string $name, TraceableAdapter $instance)
+    {
+        $this->instances[$name] = $instance;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function collect(Request $request, Response $response, \Throwable $exception = null)
+    {
+        $empty = ['calls' => [], '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']['statistics'] = $this->calculateStatistics();
+        $this->data['total']['statistics'] = $this->calculateTotalStatistics();
+    }
+
+    public function reset()
+    {
+        $this->data = [];
+        foreach ($this->instances as $instance) {
+            $instance->clearCalls();
+        }
+    }
+
+    public function lateCollect()
+    {
+        $this->data['instances']['calls'] = $this->cloneVar($this->data['instances']['calls']);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    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.
+     *
+     * @return mixed
+     */
+    public function getCalls()
+    {
+        return $this->data['instances']['calls'];
+    }
+
+    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;
+    }
+}