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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 Assert\Assertion; |
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use Composer\Semver\Semver; |
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use UnexpectedValueException; |
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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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RUN $(php -r '$extensionInstalled = array_map("strtolower", \get_loaded_extensions(false));$requiredExtensions = __PHP_EXTENSIONS_TOKEN__;$extensionsToInstall = array_diff($requiredExtensions, $extensionInstalled);if ([] !== $extensionsToInstall) {echo \sprintf("docker-php-ext-install %s", implode(" ", $extensionsToInstall));}echo "echo \"No 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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'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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]; |
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private $image; |
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private $extensions; |
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private $sourcePhar; |
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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 $sourcePhar): self |
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{ |
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return new static( |
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self::retrievePhpImageName($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(string $image, array $extensions, string $sourcePhar) |
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{ |
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Assertion::inArray($image, self::PHP_DOCKER_IMAGES); |
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Assertion::allString($extensions); |
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$this->image = $image; |
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$this->extensions = $extensions; |
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$this->sourcePhar = $sourcePhar; |
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} |
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/** |
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* @return string The stub |
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*/ |
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public function generate(): string |
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{ |
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$contents = self::FILE_TEMPLATE; |
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$contents = str_replace( |
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'__BASE_PHP_IMAGE_TOKEN__', |
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$this->image, |
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$contents |
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); |
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$contents = str_replace( |
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'__PHP_EXTENSIONS_TOKEN__', |
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[] === $this->extensions |
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? '[]' |
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: sprintf( |
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'["%s"]', |
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implode( |
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'", "', |
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$this->extensions |
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) |
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), |
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$contents |
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); |
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$contents = str_replace( |
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'__PHAR_FILE_PATH_TOKEN__', |
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$this->sourcePhar, |
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$contents |
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); |
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$contents = str_replace( |
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'__PHAR_FILE_NAME_TOKEN__', |
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basename($this->sourcePhar), |
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$contents |
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); |
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return $contents; |
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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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function (array $requirement): bool { |
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return 'php' === $requirement['type']; |
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} |
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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 $condition) { |
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if (false === Semver::satisfies($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('", "', array_values(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 $requirements): array |
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{ |
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return array_column( |
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array_filter( |
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$requirements, |
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function (array $requirement): bool { |
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return 'extension' === $requirement['type']; |
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} |
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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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humbug /
box
