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Editing: ProfilerWrapperCache.php

<?php

declare(strict_types = 1);
/**
 * SPDX-FileCopyrightText: 2022 Nextcloud GmbH and Nextcloud contributors
 * SPDX-License-Identifier: AGPL-3.0-or-later
 */

namespace OC\Memcache;

use OC\AppFramework\Http\Request;
use OCP\AppFramework\Http\Response;
use OCP\DataCollector\AbstractDataCollector;
use OCP\IMemcacheTTL;

/**
 * Cache wrapper that logs profiling information
 * @template-implements \ArrayAccess<string,mixed>
 */
class ProfilerWrapperCache extends AbstractDataCollector implements IMemcacheTTL, \ArrayAccess {
	/** @var Redis $wrappedCache */
	protected $wrappedCache;

/** @var string $prefix */
	protected $prefix;

/** @var string $type */
	private $type;

public function __construct(Redis $wrappedCache, string $type) {
		$this->prefix = $wrappedCache->getPrefix();
		$this->wrappedCache = $wrappedCache;
		$this->type = $type;
		$this->data['queries'] = [];
		$this->data['cacheHit'] = 0;
		$this->data['cacheMiss'] = 0;
	}

public function getPrefix(): string {
		return $this->prefix;
	}

/** @inheritDoc */
	public function get($key) {
		$start = microtime(true);
		$ret = $this->wrappedCache->get($key);
		if ($ret === null) {
			$this->data['cacheMiss']++;
		} else {
			$this->data['cacheHit']++;
		}
		$this->data['queries'][] = [
			'start' => $start,
			'end' => microtime(true),
			'op' => $this->getPrefix() . '::get::' . $key,
			'hit' => $ret !== null,
		];
		return $ret;
	}

/** @inheritDoc */
	public function set($key, $value, $ttl = 0) {
		$start = microtime(true);
		$ret = $this->wrappedCache->set($key, $value, $ttl);
		$this->data['queries'][] = [
			'start' => $start,
			'end' => microtime(true),
			'op' => $this->getPrefix() . '::set::' . $key,
		];
		return $ret;
	}

/** @inheritDoc */
	public function hasKey($key) {
		$start = microtime(true);
		$ret = $this->wrappedCache->hasKey($key);
		$this->data['queries'][] = [
			'start' => $start,
			'end' => microtime(true),
			'op' => $this->getPrefix() . '::hasKey::' . $key,
		];
		return $ret;
	}

/** @inheritDoc */
	public function remove($key) {
		$start = microtime(true);
		$ret = $this->wrappedCache->remove($key);
		$this->data['queries'][] = [
			'start' => $start,
			'end' => microtime(true),
			'op' => $this->getPrefix() . '::remove::' . $key,
		];
		return $ret;
	}

/** @inheritDoc */
	public function clear($prefix = '') {
		$start = microtime(true);
		$ret = $this->wrappedCache->clear($prefix);
		$this->data['queries'][] = [
			'start' => $start,
			'end' => microtime(true),
			'op' => $this->getPrefix() . '::clear::' . $prefix,
		];
		return $ret;
	}

/** @inheritDoc */
	public function add($key, $value, $ttl = 0) {
		$start = microtime(true);
		$ret = $this->wrappedCache->add($key, $value, $ttl);
		$this->data['queries'][] = [
			'start' => $start,
			'end' => microtime(true),
			'op' => $this->getPrefix() . '::add::' . $key,
		];
		return $ret;
	}

/** @inheritDoc */
	public function inc($key, $step = 1) {
		$start = microtime(true);
		$ret = $this->wrappedCache->inc($key, $step);
		$this->data['queries'][] = [
			'start' => $start,
			'end' => microtime(true),
			'op' => $this->getPrefix() . '::inc::' . $key,
		];
		return $ret;
	}

/** @inheritDoc */
	public function dec($key, $step = 1) {
		$start = microtime(true);
		$ret = $this->wrappedCache->dec($key, $step);
		$this->data['queries'][] = [
			'start' => $start,
			'end' => microtime(true),
			'op' => $this->getPrefix() . '::dev::' . $key,
		];
		return $ret;
	}

/** @inheritDoc */
	public function cas($key, $old, $new) {
		$start = microtime(true);
		$ret = $this->wrappedCache->cas($key, $old, $new);
		$this->data['queries'][] = [
			'start' => $start,
			'end' => microtime(true),
			'op' => $this->getPrefix() . '::cas::' . $key,
		];
		return $ret;
	}

/** @inheritDoc */
	public function cad($key, $old) {
		$start = microtime(true);
		$ret = $this->wrappedCache->cad($key, $old);
		$this->data['queries'][] = [
			'start' => $start,
			'end' => microtime(true),
			'op' => $this->getPrefix() . '::cad::' . $key,
		];
		return $ret;
	}

/** @inheritDoc */
	public function ncad(string $key, mixed $old): bool {
		$start = microtime(true);
		$ret = $this->wrappedCache->ncad($key, $old);
		$this->data['queries'][] = [
			'start' => $start,
			'end' => microtime(true),
			'op' => $this->getPrefix() . '::ncad::' . $key,
		];
		return $ret;
	}

/** @inheritDoc */
	public function setTTL(string $key, int $ttl) {
		$this->wrappedCache->setTTL($key, $ttl);
	}

public function getTTL(string $key): int|false {
		return $this->wrappedCache->getTTL($key);
	}

public function compareSetTTL(string $key, mixed $value, int $ttl): bool {
		return $this->wrappedCache->compareSetTTL($key, $value, $ttl);
	}

public function offsetExists($offset): bool {
		return $this->hasKey($offset);
	}

public function offsetSet($offset, $value): void {
		$this->set($offset, $value);
	}

/**
	 * @return mixed
	 */
	#[\ReturnTypeWillChange]
	public function offsetGet($offset) {
		return $this->get($offset);
	}

public function offsetUnset($offset): void {
		$this->remove($offset);
	}

public function collect(Request $request, Response $response, ?\Throwable $exception = null): void {
		// Nothing to do here $data is already ready
	}

public function getName(): string {
		return 'cache/' . $this->type . '/' . $this->prefix;
	}

public static function isAvailable(): bool {
		return true;
	}
}

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