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<?php |
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namespace Mtolhuys\LaravelRequestBenchmark; |
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class Benchmark |
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{ |
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/** |
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* Informative label containing request method and url |
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* |
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* @var string $request |
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*/ |
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private static $request; |
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/** |
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* Float containing amount of time as microtime |
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* |
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* @var float $runtime |
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*/ |
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private static $runtime; |
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/** |
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* Array containing measured memory data |
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* |
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* @var array $memory |
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*/ |
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private static $memory = [ |
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'unit' => 'Kb', |
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'pre' => null, |
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'post' => null, |
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]; |
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/** |
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* Start measuring, called before request handling |
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* |
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* @param string $request |
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*/ |
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public static function start(string $request) |
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{ |
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self::$request = $request; |
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self::$runtime = microtime(true); |
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self::$memory['pre'] = self::getCurrentMemoryUsage(); |
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} |
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/** |
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* Stop measuring, called after request handling |
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* |
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* @throws \Exception |
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*/ |
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public static function stop() |
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{ |
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self::$memory['post'] = self::getCurrentMemoryUsage(); |
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self::log(); |
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} |
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/** |
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* Log and/or store measured data |
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* |
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* @throws \Exception |
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*/ |
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private static function log() |
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{ |
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$result = self::getResult(); |
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if (config('request-benchmark.log')) { |
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\Log::debug( |
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'request-benchmark: ' . self::$request . PHP_EOL |
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. "Time: {$result->time}ms" . PHP_EOL |
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. "Pre memory usage {$result->pre_memory_usage}" . PHP_EOL |
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. "Post memory usage {$result->post_memory_usage} ({$result->actual_memory_usage})" |
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); |
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} |
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if (config('request-benchmark.storage_path')) { |
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self::storeJson($result); |
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} |
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} |
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private static function getResult() |
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{ |
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$time = self::getTime(); |
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$memory = self::getTotalMemoryUsage(); |
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return (object)[ |
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'time' => "{$time}ms", |
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'pre_memory_usage' => $memory->pre, |
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'post_memory_usage' => $memory->post, |
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'actual_memory_usage' => $memory->difference, |
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]; |
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} |
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/** |
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* Get current memory usage for measuring |
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* |
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* @return float |
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*/ |
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private static function getCurrentMemoryUsage(): float |
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{ |
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$usage = self::increaseMagnitude(memory_get_usage()); |
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if ($usage >= (10 * 1000)) { |
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self::$memory['unit'] = 'Mb'; |
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} |
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return $usage; |
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} |
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/** |
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* Get total measured memory usage |
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* |
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* @return object |
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*/ |
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private static function getTotalMemoryUsage() |
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{ |
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$unit = self::$memory['unit']; |
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$pre = self::$memory['pre']; |
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$post = self::$memory['post']; |
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if (self::$memory['unit'] === 'Mb') { |
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$pre = self::increaseMagnitude($pre); |
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$post = self::increaseMagnitude($post); |
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} |
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return (object) [ |
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'pre' => "{$pre}{$unit}", |
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'post' => "{$post}{$unit}", |
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'difference' => ($post - $pre) . $unit, |
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]; |
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} |
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/** |
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* Get time between now and start() invocation |
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* |
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* @return float |
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*/ |
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private static function getTime(): float |
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{ |
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$diff = microtime(true) - self::$runtime; |
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return round(($diff - (int)$diff) * 1000, 2); |
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} |
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/** |
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* Increasing measured byte $amount in magnitude Kb -> Mb etc. |
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* |
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* @param int $amount |
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* @return float |
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*/ |
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private static function increaseMagnitude(int $amount): float |
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{ |
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return round($amount / 1024, 2); |
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} |
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/** |
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* @param $result |
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* |
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* @throws \Exception |
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*/ |
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private static function storeJson($result) |
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{ |
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$file = config('request-benchmark.storage_path').'/request-benchmark.json'; |
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$requests = file_exists($file) ? json_decode(file_get_contents($file), true) : []; |
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if (isset($requests[self::$request])) { |
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$requests['history'] = self::history($requests); |
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} |
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$requests[self::$request] = $result; |
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file_put_contents($file, json_encode($requests, JSON_UNESCAPED_SLASHES|JSON_PRETTY_PRINT)); |
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} |
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/** |
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* @param array $requests |
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* @return mixed |
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* @throws \Exception |
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*/ |
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private static function history(array $requests) |
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{ |
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$timestamp = (new \DateTime('now'))->format('Y-m-d H:i:s'); |
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$history = $requests['history'] ?? []; |
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if (!isset($history[self::$request]) || !self::maxHistoryReached($history)) { |
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$history[self::$request][$timestamp] = $requests[self::$request]; |
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} |
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else { |
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unset($history[self::$request][array_key_last($history[self::$request])]); |
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$history[self::$request] = [ |
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$timestamp => $requests[self::$request] |
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] + $history[self::$request]; |
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} |
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return $history; |
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} |
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/** |
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* @param array $history |
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* @return bool |
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*/ |
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private static function maxHistoryReached(array $history): bool |
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{ |
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return config('request-benchmark.max_history') <= count($history[self::$request]); |
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} |
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} |
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mtolhuys /
laravel-request-benchmark
