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<?php declare(strict_types=1); |
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namespace PmgDev\DatabaseReplicator\Database; |
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use PmgDev\DatabaseReplicator\Command; |
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use PmgDev\DatabaseReplicator\Config; |
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use PmgDev\DatabaseReplicator\Exceptions; |
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use PmgDev\DatabaseReplicator\Source; |
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class Replicator |
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{ |
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/** @var Command */ |
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private $command; |
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/** @var Prefix */ |
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private $prefix; |
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/** @var Source\Database */ |
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private $sourceDatabase; |
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/** @var Source\Files */ |
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private $files; |
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public function __construct( |
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Command $command, |
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Prefix $prefix, |
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Source\Database $sourceDatabase, |
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?Source\Files $files = NULL |
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) |
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{ |
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$this->command = $command; |
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$this->prefix = $prefix; |
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$this->sourceDatabase = $sourceDatabase; |
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$this->files = $files ?? new Source\Files(); |
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} |
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public function copy(string $name = ''): Config |
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{ |
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$dbname = $this->databaseName(); |
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if ($name === '') { |
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$name = $dbname; |
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} |
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try { |
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$config = $this->copyDatabase($name); |
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} catch (Exceptions\CopyCommandFailedException $e) { |
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$this->sourceDatabase->build(); |
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$config = $this->copyDatabase($name); |
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} |
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$this->command->importFiles($this->files, $config); |
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return $config; |
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} |
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public function drop(string $database): void |
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{ |
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$this->command->drop($database); |
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} |
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/** |
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* @param bool|string[] $keepDatabases |
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* @return string[][] |
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*/ |
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public function clearDatabases($keepDatabases = TRUE): array |
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{ |
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$listDatabases = $this->generateListDatabases($keepDatabases); |
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$kept = $removed = []; |
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$dbPrefix = $this->prefix->prefix(); |
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foreach ($this->command->listDatabases() as $database) { |
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if (preg_match('~^' . $dbPrefix . '[a-z0-9]{32}.*$~', $database)) { |
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if (in_array($database, $listDatabases, TRUE)) { |
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$kept[] = $database; |
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} else { |
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$this->drop($database); |
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$removed[] = $database; |
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} |
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} |
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} |
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return ['removed' => $removed, 'kept' => $kept]; |
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} |
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/** |
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* @param bool|string[] $keepDatabases |
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* @return string[] |
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*/ |
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private function generateListDatabases($keepDatabases): array |
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{ |
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try { |
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if ($keepDatabases === TRUE) { |
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$listDatabases = [$this->prefix->database()]; |
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} else if (is_array($keepDatabases)) { |
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$keepDatabases[] = $this->prefix->database(); |
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$listDatabases = $keepDatabases; |
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} else { |
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$listDatabases = []; |
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} |
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} catch (Exceptions\ActiveFileNotFoundException $e) { |
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$listDatabases = []; |
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} |
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return $listDatabases; |
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} |
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private function generateName(): string |
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{ |
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static $i = 0; |
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$name = $this->prefix->database() . '_' . date('His') . '_' . getmypid() . '_' . $i; |
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++$i; |
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return $name; |
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} |
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private function databaseName(): string |
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{ |
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try { |
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$name = $this->generateName(); |
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} catch (Exceptions\ActiveFileNotFoundException $e) { |
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$this->sourceDatabase->build(); |
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$name = $this->generateName(); |
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} |
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return $name; |
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} |
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private function copyDatabase(string $name): Config |
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{ |
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$config = $this->prefix->config(); |
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$this->command->copy($config, $name); |
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$config->database = $name; |
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return $config; |
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} |
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} |
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pmgdev /
database-replicator
Let?s assume that you have a directory layout like this:
. |-- OtherDir | |-- Bar.php | `-- Foo.php `-- SomeDir `-- Foo.phpand let?s assume the following content of
Bar.php:If both files
OtherDir/Foo.phpandSomeDir/Foo.phpare loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.phpHowever, as
OtherDir/Foo.phpdoes not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: