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<?php |
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declare(strict_types=1); |
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/* |
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* This file is part of the box project. |
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* |
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* (c) Kevin Herrera <[email protected]> |
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* Théo Fidry <[email protected]> |
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* |
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* This source file is subject to the MIT license that is bundled |
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* with this source code in the file LICENSE. |
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*/ |
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namespace KevinGH\Box; |
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use Composer\Semver\Semver; |
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use UnexpectedValueException; |
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use Webmozart\Assert\Assert; |
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use function array_column; |
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use function array_filter; |
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use function array_unique; |
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use function basename; |
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use function count; |
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use function implode; |
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use function sprintf; |
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use function strtr; |
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use const PHP_EOL; |
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/** |
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* @private |
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*/ |
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final class DockerFileGenerator |
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{ |
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private const FILE_TEMPLATE = <<<'Dockerfile' |
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FROM php:__BASE_PHP_IMAGE_TOKEN__ |
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COPY --from=mlocati/php-extension-installer /usr/bin/install-php-extensions /usr/local/bin/ |
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__REQUIRED_EXTENSIONS__ |
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COPY __PHAR_FILE_PATH_TOKEN__ /__PHAR_FILE_NAME_TOKEN__ |
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ENTRYPOINT ["/__PHAR_FILE_NAME_TOKEN__"] |
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Dockerfile; |
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private const PHP_DOCKER_IMAGES = [ |
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'8.3.0' => '8.3-cli-alpine', |
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'8.2.0' => '8.2-cli-alpine', |
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'8.1.0' => '8.1-cli-alpine', |
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'8.0.0' => '8.0-cli-alpine', |
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'7.4.0' => '7.4-cli-alpine', |
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'7.3.0' => '7.3-cli-alpine', |
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'7.2.0' => '7.2-cli-alpine', |
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'7.1.0' => '7.1-cli-alpine', |
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'7.0.0' => '7-cli-alpine', |
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'*' => 'to-define-manually', |
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]; |
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private readonly string $image; |
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/** |
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* @var string[] |
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*/ |
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private readonly array $extensions; |
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/** |
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* Creates a new instance of the generator. |
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* |
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* @param array $requirements List of requirements following the format defined by the RequirementChecker component |
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* @param string $sourcePhar source PHAR location; This PHAR is going to be copied over to the image so the path |
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* should either be absolute or relative to the location of the Dockerfile |
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*/ |
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public static function createForRequirements(array $requirements, string $sourcePhar): self |
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{ |
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return new self( |
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self::retrievePhpImageName($requirements), |
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self::retrievePhpExtensions($requirements), |
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$sourcePhar, |
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); |
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} |
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/** |
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* @param string[] $extensions |
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* @param string $sourcePhar source PHAR location; This PHAR is going to be copied over to the image so the path |
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* should either be absolute or relative to the location of the Dockerfile |
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*/ |
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public function __construct( |
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string $image, |
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array $extensions, |
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private readonly string $sourcePhar, |
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) { |
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Assert::inArray($image, self::PHP_DOCKER_IMAGES); |
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Assert::allString($extensions); |
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$this->image = $image; |
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$this->extensions = $extensions; |
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} |
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public function generateStub(): string |
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{ |
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$requiredExtensions = 0 === count($this->extensions) |
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? '' |
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: sprintf( |
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'RUN install-php-extensions %s%s', |
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implode(' ', $this->extensions), |
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PHP_EOL, |
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); |
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return strtr( |
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self::FILE_TEMPLATE, |
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[ |
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'__BASE_PHP_IMAGE_TOKEN__' => $this->image, |
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'__PHAR_FILE_PATH_TOKEN__' => $this->sourcePhar, |
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'__PHAR_FILE_NAME_TOKEN__' => basename($this->sourcePhar), |
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'__REQUIRED_EXTENSIONS__' => $requiredExtensions, |
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], |
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); |
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} |
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private static function retrievePhpImageName(array $requirements): string |
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{ |
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$conditions = array_column( |
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array_filter( |
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$requirements, |
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static fn (array $requirement): bool => 'php' === $requirement['type'], |
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), |
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'condition', |
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); |
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foreach (self::PHP_DOCKER_IMAGES as $php => $image) { |
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foreach ($conditions as $condition) { |
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if ('*' === $php) { |
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return $image; |
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} |
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if (false === Semver::satisfies($php, $condition)) { |
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continue 2; |
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} |
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} |
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return $image; |
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} |
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throw new UnexpectedValueException( |
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sprintf( |
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'Could not find a suitable Docker base image for the PHP constraint(s) "%s". Images available: "%s".', |
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implode('", "', $conditions), |
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implode('", "', self::PHP_DOCKER_IMAGES), |
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), |
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); |
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} |
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/** |
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* @return string[] |
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*/ |
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private static function retrievePhpExtensions(array $requirements): array |
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{ |
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return array_unique( |
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array_column( |
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array_filter( |
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$requirements, |
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static fn (array $requirement): bool => 'extension' === $requirement['type'], |
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), |
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'condition', |
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), |
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); |
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} |
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} |
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humbug /
box
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