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<?php |
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declare(strict_types = 1); |
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namespace Innmind\Server\Status\Facade\Memory; |
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use Innmind\Server\Status\{ |
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Server\Memory, |
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Server\Memory\Bytes, |
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Exception\MemoryUsageNotAccessible, |
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}; |
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use Innmind\Immutable\{ |
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Str, |
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Map, |
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}; |
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use Symfony\Component\Process\Process; |
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final class LinuxFacade |
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{ |
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private static array $entries = [ |
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'MemTotal' => 'total', |
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'Active' => 'active', |
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'Inactive' => 'inactive', |
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'MemFree' => 'free', |
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'SwapCached' => 'swap', |
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]; |
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public function __invoke(): Memory |
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{ |
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$process = Process::fromShellCommandline('cat /proc/meminfo'); |
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$process->run(); |
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if (!$process->isSuccessful()) { |
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throw new MemoryUsageNotAccessible; |
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} |
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/** @var Map<string, int> */ |
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$amounts = Str::of($process->getOutput()) |
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->trim() |
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->split("\n") |
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->filter(static function(Str $line): bool { |
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return $line->matches( |
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'~^('.\implode('|', \array_keys(self::$entries)).'):~' |
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); |
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}) |
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->reduce( |
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Map::of('string', 'int'), |
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static function(Map $map, Str $line): Map { |
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$elements = $line->capture('~^(?P<key>[a-zA-Z]+): +(?P<value>\d+) kB$~'); |
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return ($map)( |
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self::$entries[$elements->get('key')->toString()], |
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((int) $elements->get('value')->toString()) * Bytes::BYTES, |
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); |
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}, |
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); |
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$used = $amounts->get('total') - $amounts->get('free'); |
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$wired = $used - $amounts->get('active') - $amounts->get('inactive'); |
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return new Memory( |
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new Bytes($amounts->get('total')), |
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new Bytes($wired), |
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new Bytes($amounts->get('active')), |
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new Bytes($amounts->get('free')), |
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new Bytes($amounts->get('swap')), |
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new Bytes($used), |
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); |
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} |
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} |
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Innmind /
ServerStatus
