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<?php declare(strict_types=1); |
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namespace Cocotte\Machine; |
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use Assert\Assertion; |
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use Cocotte\Environment\LazyEnvironmentValue; |
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use Cocotte\Environment\LazyLoadAware; |
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use Cocotte\Filesystem\Filesystem; |
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use Cocotte\Shell\Env; |
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class MachineStoragePath implements LazyEnvironmentValue, LazyLoadAware |
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{ |
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const MACHINE_STORAGE_PATH = 'MACHINE_STORAGE_PATH'; |
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const INPUT_OPTION = 'machine-storage-path'; |
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/** |
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* @var string |
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*/ |
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private $value; |
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/** |
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* @var Filesystem |
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*/ |
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private $filesystem; |
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public function __construct(string $value, Filesystem $filesystem) |
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{ |
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Assertion::notEmpty($value, "The machine storage path is empty."); |
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Assertion::regex( |
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$value, |
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'/^[^$"\']+$/', |
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"The machine storage path '{$value}' contains dollar signs, single quotes or double quotes." |
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); |
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Assertion::true( |
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$filesystem->isAbsolutePath($value), |
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"Machine storage path '{$value}' is not an absolute path" |
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); |
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$this->filesystem = $filesystem; |
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$this->value = $value; |
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} |
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public function toString(): string |
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{ |
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return $this->value; |
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} |
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public function __toString() |
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{ |
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return $this->toString(); |
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} |
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public function onLazyLoad(Env $env): void |
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{ |
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$env->put(self::MACHINE_STORAGE_PATH, $this->toString()); |
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$this->symLink(); |
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} |
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/** |
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* This is crooked but it serves our purpose: |
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* Create a path on installer identical to the storage path on host. |
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* Because docker machine stores an absolute path in its config files and |
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* we want it to work outside of the installer afterwards. |
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* This solution is preferred to editing the json config files after machine creation and |
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* every time docker machine would rewrite it. |
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* |
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* @throws \Exception |
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*/ |
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private function symLink() |
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{ |
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// Unlikely but if Cocotte is run from a root /host directory, then we don't need a sym link. |
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if ($this->pathOnInstaller() === $this->pathOnHostFileSystem()) { |
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return; |
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} |
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if (!$this->filesystem->exists($this->pathOnHostFileSystem())) { |
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$this->createSymLink(); |
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} else { |
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$this->guardSymLink(); |
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} |
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} |
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private function pathOnHostFileSystem(): string |
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{ |
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return $this->toString(); |
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} |
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private function pathOnInstaller(): string |
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{ |
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return "/host/machine"; |
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} |
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private function createSymLink(): void |
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{ |
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$filesystem = $this->filesystem; |
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$pathOnInstaller = $this->pathOnInstaller(); |
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$pathOnHostFileSystem = $this->pathOnHostFileSystem(); |
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if ($filesystem->exists($pathOnInstaller) && !$filesystem->exists("{$pathOnInstaller}/certs")) { |
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throw new \Exception( |
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"Error: Tried to create a directory named 'machine' in the directory from where you ". |
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"executed Cocotte but it already exists and it is not a valid docker machine storage path." |
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); |
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} |
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$filesystem->mkdir("{$pathOnInstaller}/certs"); |
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$filesystem->symlink($pathOnInstaller, $pathOnHostFileSystem); |
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} |
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private function guardSymLink(): void |
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{ |
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if (!$this->filesystem->isLink($this->pathOnHostFileSystem())) { |
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throw new \Exception( |
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"Error: cannot symlink '{$this->pathOnInstaller()}' to '{$this->pathOnHostFileSystem()}' because ". |
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"it is a real path on Cocotte filesystem. Start Cocotte from a different directory on your computer. ". |
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"One that does not exist in the Cocotte filesystem.\n" |
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); |
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} |
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$readlink = $this->filesystem->readlink($this->pathOnHostFileSystem()); |
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if ($readlink !== $this->pathOnInstaller()) { |
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throw new \Exception( |
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"Error: Cannot symlink '{$this->pathOnInstaller()}' to '{$this->pathOnHostFileSystem()}' because ". |
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"it is already symlink which resolves to '{$readlink}'." |
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); |
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} |
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} |
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} |
chrif /
cocotte
