| 1 |
<?php |
| 2 |
|
| 3 |
/** |
| 4 |
* This file is part of the Nette Framework (https://nette.org) |
| 5 |
* Copyright (c) 2004 David Grudl (https://davidgrudl.com) |
| 6 |
*/ |
| 7 |
declare (strict_types=1); |
| 8 |
namespace Packetery\Nette\DI; |
| 9 |
|
| 10 |
use Packetery\Nette; |
| 11 |
/** |
| 12 |
* DI container loader. |
| 13 |
*/ |
| 14 |
class ContainerLoader |
| 15 |
{ |
| 16 |
use \Packetery\Nette\SmartObject; |
| 17 |
/** @var bool */ |
| 18 |
private $autoRebuild; |
| 19 |
/** @var string */ |
| 20 |
private $tempDirectory; |
| 21 |
public function __construct(string $tempDirectory, bool $autoRebuild = \false) |
| 22 |
{ |
| 23 |
$this->tempDirectory = $tempDirectory; |
| 24 |
$this->autoRebuild = $autoRebuild; |
| 25 |
} |
| 26 |
/** |
| 27 |
* @param callable $generator function (\Packetery\Nette\DI\Compiler $compiler): string|null |
| 28 |
* @param mixed $key |
| 29 |
*/ |
| 30 |
public function load(callable $generator, $key = null) : string |
| 31 |
{ |
| 32 |
$class = $this->getClassName($key); |
| 33 |
if (!\class_exists($class, \false)) { |
| 34 |
$this->loadFile($class, $generator); |
| 35 |
} |
| 36 |
return $class; |
| 37 |
} |
| 38 |
/** |
| 39 |
* @param mixed $key |
| 40 |
*/ |
| 41 |
public function getClassName($key) : string |
| 42 |
{ |
| 43 |
return 'Container_' . \substr(\md5(\serialize($key)), 0, 10); |
| 44 |
} |
| 45 |
private function loadFile(string $class, callable $generator) : void |
| 46 |
{ |
| 47 |
$file = "{$this->tempDirectory}/{$class}.php"; |
| 48 |
if (!$this->isExpired($file) && @(include $file) !== \false) { |
| 49 |
// @ file may not exist |
| 50 |
return; |
| 51 |
} |
| 52 |
\Packetery\Nette\Utils\FileSystem::createDir($this->tempDirectory); |
| 53 |
$handle = @\fopen("{$file}.lock", 'c+'); |
| 54 |
// @ is escalated to exception |
| 55 |
if (!$handle) { |
| 56 |
throw new \Packetery\Nette\IOException(\sprintf("Unable to create file '%s.lock'. %s", $file, \Packetery\Nette\Utils\Helpers::getLastError())); |
| 57 |
} elseif (!@\flock($handle, \LOCK_EX)) { |
| 58 |
// @ is escalated to exception |
| 59 |
throw new \Packetery\Nette\IOException(\sprintf("Unable to acquire exclusive lock on '%s.lock'. %s", $file, \Packetery\Nette\Utils\Helpers::getLastError())); |
| 60 |
} |
| 61 |
if (!\is_file($file) || $this->isExpired($file, $updatedMeta)) { |
| 62 |
if (isset($updatedMeta)) { |
| 63 |
$toWrite["{$file}.meta"] = $updatedMeta; |
| 64 |
} else { |
| 65 |
[$toWrite[$file], $toWrite["{$file}.meta"]] = $this->generate($class, $generator); |
| 66 |
} |
| 67 |
foreach ($toWrite as $name => $content) { |
| 68 |
if (\file_put_contents("{$name}.tmp", $content) !== \strlen($content) || !\rename("{$name}.tmp", $name)) { |
| 69 |
@\unlink("{$name}.tmp"); |
| 70 |
// @ - file may not exist |
| 71 |
throw new \Packetery\Nette\IOException(\sprintf("Unable to create file '%s'.", $name)); |
| 72 |
} elseif (\function_exists('opcache_invalidate')) { |
| 73 |
@\opcache_invalidate($name, \true); |
| 74 |
// @ can be restricted |
| 75 |
} |
| 76 |
} |
| 77 |
} |
| 78 |
if (@(include $file) === \false) { |
| 79 |
// @ - error escalated to exception |
| 80 |
throw new \Packetery\Nette\IOException(\sprintf("Unable to include '%s'.", $file)); |
| 81 |
} |
| 82 |
\flock($handle, \LOCK_UN); |
| 83 |
} |
| 84 |
private function isExpired(string $file, ?string &$updatedMeta = null) : bool |
| 85 |
{ |
| 86 |
if ($this->autoRebuild) { |
| 87 |
$meta = @\unserialize((string) \file_get_contents("{$file}.meta")); |
| 88 |
// @ - file may not exist |
| 89 |
$orig = $meta[2] ?? null; |
| 90 |
return empty($meta[0]) || DependencyChecker::isExpired(...$meta) || $orig !== $meta[2] && ($updatedMeta = \serialize($meta)); |
| 91 |
} |
| 92 |
return \false; |
| 93 |
} |
| 94 |
/** @return array of (code, file[]) */ |
| 95 |
protected function generate(string $class, callable $generator) : array |
| 96 |
{ |
| 97 |
$compiler = new Compiler(); |
| 98 |
$compiler->setClassName($class); |
| 99 |
$code = $generator(...[&$compiler]) ?: $compiler->compile(); |
| 100 |
return ["<?php\n{$code}", \serialize($compiler->exportDependencies())]; |
| 101 |
} |
| 102 |
} |
| 103 |
|
