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<?php |
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namespace DeployRevision; |
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class Worker implements WorkerInterface |
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{ |
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/** |
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* Indicates whether deployment was executed. |
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* |
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* @var bool |
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*/ |
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private $deployed = false; |
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/** |
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* Environment ID. |
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* |
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* @var string |
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*/ |
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protected $environment = ''; |
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/** |
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* List of collected commands from playbooks. |
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* |
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* @var array |
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*/ |
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protected $commands = []; |
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/** |
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* Path to file for storing code revision. |
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* |
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* @var string |
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*/ |
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protected $versionFile = ''; |
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/** |
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* Current version of code. |
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* |
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* @var int |
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*/ |
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protected $currentCodeVersion = 0; |
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/** |
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* New version of code. |
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* |
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* @var int |
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*/ |
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protected $newCodeVersion = 0; |
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/** |
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* YAML parser. |
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* |
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* @var YamlInterface |
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*/ |
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protected $yaml; |
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/** |
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* Messages logger. |
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* |
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* @var LoggerInterface |
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*/ |
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protected $logger; |
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/** |
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* {@inheritdoc} |
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*/ |
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public function __construct(YamlInterface $yaml, LoggerInterface $logger, $environment, $versionFile) |
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{ |
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if (!$yaml->isAvailable()) { |
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throw new \RuntimeException(sprintf('YAML parser "%s" is not available', get_class($yaml))); |
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} |
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$this->yaml = $yaml; |
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$this->logger = $logger; |
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$this->environment = $environment; |
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$this->versionFile = "$versionFile-$environment"; |
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if (file_exists($this->versionFile)) { |
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$this->newCodeVersion = $this->currentCodeVersion = (int) file_get_contents($this->versionFile); |
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} |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function read($path) |
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{ |
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if (is_dir($path)) { |
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// Using just "\FilesystemIterator" we cannot be sure that correct ordering will be gained. On |
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// TravisCI, for instance, ordering always was correct for every PHP version, but on Scrutinizer |
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// was the cases when this valuable thing has not been achieved. |
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// https://scrutinizer-ci.com/g/BR0kEN-/deploy-revision/inspections/8b28f584-b923-4a47-96af-90f5b31f4a32 |
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$files = iterator_to_array(new \FilesystemIterator($path, \FilesystemIterator::SKIP_DOTS)); |
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// Guarantee alphabetical ordering on every file system. |
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ksort($files); |
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foreach ($files as $path => $file) { |
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$this->processPlaybook($path); |
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} |
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} elseif (file_exists($path)) { |
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$this->processPlaybook($path); |
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} else { |
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$this->logger->log(sprintf('Not file "%s" nor directory exists', $path)); |
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} |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getCurrentCodeVersion() |
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{ |
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return $this->currentCodeVersion; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getNewCodeVersion() |
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{ |
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return $this->newCodeVersion; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function filter(callable $processor) |
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{ |
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$commands = []; |
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ksort($this->commands); |
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foreach ($this->commands as $list) { |
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foreach ($list as $command) { |
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// Deployment cannot continue. |
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if (!is_string($command)) { |
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throw new \RuntimeException(sprintf( |
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'Complex value cannot be a command: %s', |
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var_export($command, true) |
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)); |
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} |
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$commands[$command] = $command; |
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unset($commands[$processor($command, $commands, function ( |
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$return_previous, |
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array $current_commands, |
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array $existing_commands |
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) use ( |
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$command, |
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$commands |
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) { |
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// Ensure that current command is candidate for filtering. |
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if (in_array($command, $current_commands)) { |
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// Iterate over commands in the list. |
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foreach ($commands as $existing_command) { |
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// Match the command in diapason. |
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if (in_array($existing_command, $existing_commands)) { |
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// Remove existing command or do not add currently processed. |
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return $return_previous ? $existing_command : $command; |
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} |
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} |
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} |
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return ''; |
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})]); |
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} |
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} |
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$this->commands = array_values($commands); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function deploy(callable $processor) |
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{ |
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$command = reset($this->commands); |
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// Filtering have not been performed and we dealing with array of arrays. |
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if (is_array($command)) { |
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$this->filter(function () { |
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return ''; |
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}); |
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} |
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array_map($processor, $this->commands); |
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// Do not allow to deploy once again accidentally. |
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$this->commands = []; |
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$this->deployed = true; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function commit() |
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{ |
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if (!$this->deployed) { |
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throw new \RuntimeException('Deployment has not been performed. Saving the revision will cause problems'); |
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} |
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if (!@file_put_contents($this->versionFile, $this->newCodeVersion)) { |
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throw new \RuntimeException(sprintf('Cannot save the version of code to "%s" file', $this->versionFile)); |
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} |
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1 |
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} |
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protected function processPlaybook($path) |
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{ |
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if (!in_array(pathinfo($path, PATHINFO_EXTENSION), ['yaml', 'yml'])) { |
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return; |
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} |
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$contents = $this->yaml->parse(file_get_contents($path)); |
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if (empty($contents['commands'])) { |
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return; |
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} |
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foreach ($contents['commands'] as $group => $commands_group) { |
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// Get only actions for particular site or global ones. |
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if (!in_array($group, ['global', $this->environment])) { |
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continue; |
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} |
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foreach ($commands_group as $version => $commands) { |
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// Skip code actions that were already run. |
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if ($version <= $this->currentCodeVersion) { |
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continue; |
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} |
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// Group commands by version to guarantee exact order. |
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$this->commands += [$version => []]; |
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$this->commands[$version] = array_merge($this->commands[$version], array_filter((array) $commands)); |
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$this->newCodeVersion = (int) max($this->newCodeVersion, $version); |
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} |
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} |
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} |
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} |
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BR0kEN- /
deploy-revision
