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<?php declare(strict_types=1); |
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/* (c) Anton Medvedev <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Deployer\Executor; |
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use Deployer\Component\Ssh\Client; |
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use Deployer\Configuration\Configuration; |
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use Deployer\Exception\Exception; |
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use Deployer\Exception\GracefulShutdownException; |
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use Deployer\Host\Host; |
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use Deployer\Host\Localhost; |
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use Deployer\Selector\Selector; |
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use Deployer\Task\Context; |
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use Deployer\Task\Task; |
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use Symfony\Component\Console\Input\InputInterface; |
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use Symfony\Component\Console\Output\OutputInterface; |
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use Symfony\Component\Process\Process; |
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const FRAMES = ['⠋', '⠙', '⠹', '⠸', '⠼', '⠴', '⠦', '⠧', '⠇', '⠏']; |
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function spinner($message = '') |
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{ |
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$frame = FRAMES[(int)(microtime(true) * 10) % count(FRAMES)]; |
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return " $frame $message\r"; |
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} |
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class ParallelExecutor |
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{ |
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private $input; |
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private $output; |
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private $messenger; |
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private $client; |
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private $config; |
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public function __construct( |
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InputInterface $input, |
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OutputInterface $output, |
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Messenger $messenger, |
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Client $client, |
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Configuration $config |
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) |
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{ |
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$this->input = $input; |
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$this->output = $output; |
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$this->messenger = $messenger; |
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$this->client = $client; |
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$this->config = $config; |
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} |
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/** |
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* @param Host[] $hosts |
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*/ |
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private function connect(array $hosts) |
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{ |
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View Code Duplication |
$callback = function (string $output) { |
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$output = preg_replace('/\n$/', '', $output); |
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if (strlen($output) !== 0) { |
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$this->output->writeln($output); |
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} |
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}; |
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// Connect to each host sequentially, to prevent getting locked. |
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foreach ($hosts as $host) { |
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if ($host instanceof Localhost) { |
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continue; |
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} |
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$process = $this->getProcess($host, new Task('connect')); |
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$process->start(); |
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while ($process->isRunning()) { |
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$this->gatherOutput([$process], $callback); |
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$this->output->write(spinner(str_pad("connect {$host->tag()}", intval(getenv('COLUMNS')) - 1))); |
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usleep(1000); |
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} |
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} |
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// Clear spinner. |
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$this->output->write(str_repeat(' ', intval(getenv('COLUMNS')) - 1) . "\r"); |
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} |
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/** |
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* @param Task[] $tasks |
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* @param Host[] $hosts |
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* @param Planner|null $plan |
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* @return int |
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*/ |
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public function run(array $tasks, array $hosts, $plan = null): int |
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{ |
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$plan || $this->connect($hosts); |
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$globalLimit = (int)$this->input->getOption('limit') ?: count($hosts); |
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foreach ($tasks as $task) { |
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$plan || $this->messenger->startTask($task); |
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$limit = min($globalLimit, $task->getLimit() ?? $globalLimit); |
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$plannedHosts = $hosts; |
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if ($task->isOnce()) { |
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$plannedHosts = []; |
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foreach ($hosts as $host) { |
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if (Selector::apply($task->getSelector(), $host)) { |
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$plannedHosts[] = $host; |
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break; |
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} |
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} |
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} |
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if ($limit === 1 || count($plannedHosts) === 1) { |
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foreach ($plannedHosts as $host) { |
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if (!Selector::apply($task->getSelector(), $host)) { |
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if ($plan) { |
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$plan->commit([], $task); |
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} |
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continue; |
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} |
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if ($plan) { |
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$plan->commit([$host], $task); |
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continue; |
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} |
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try { |
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$host->getConfig()->load(); |
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Exception::setTaskSourceLocation($task->getSourceLocation()); |
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$task->run(new Context($host, $this->input, $this->output)); |
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$host->getConfig()->save(); |
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} catch (GracefulShutdownException $exception) { |
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$this->messenger->renderException($exception, $host); |
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return GracefulShutdownException::EXIT_CODE; |
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} catch (\Throwable $exception) { |
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$this->messenger->renderException($exception, $host); |
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return 1; |
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} |
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} |
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} else { |
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foreach (array_chunk($hosts, $limit) as $chunk) { |
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$exitCode = $this->runTask($chunk, $task, $plan); |
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if ($exitCode !== 0) { |
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return $exitCode; |
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} |
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} |
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} |
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$this->messenger->endTask($task); |
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} |
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return 0; |
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} |
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private function runTask(array $hosts, Task $task, Planner $plan = null): int |
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{ |
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$processes = []; |
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$selectedHosts = []; |
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foreach ($hosts as $host) { |
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$selector = $task->getSelector(); |
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if ($selector === null || Selector::apply($selector, $host)) { |
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$selectedHosts[] = $host; |
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$plan || $processes[] = $this->getProcess($host, $task); |
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} |
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} |
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if ($plan) { |
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$plan->commit($selectedHosts, $task); |
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return 0; |
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} |
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View Code Duplication |
$callback = function (string $output) { |
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$output = preg_replace('/\n$/', '', $output); |
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if (strlen($output) !== 0) { |
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$this->output->writeln($output); |
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} |
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}; |
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$this->startProcesses($processes); |
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while ($this->areRunning($processes)) { |
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$this->gatherOutput($processes, $callback); |
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$this->output->write(spinner()); |
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usleep(1000); |
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} |
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// Clear spinner. |
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$this->output->write(" \r"); |
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$this->gatherOutput($processes, $callback); |
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return $this->cumulativeExitCode($processes); |
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} |
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protected function getProcess(Host $host, Task $task): Process |
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{ |
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$dep = PHP_BINARY . ' ' . DEPLOYER_BIN; |
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$configDirectory = $host->get('config_directory'); |
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$decorated = $this->output->isDecorated() ? '--decorated' : ''; |
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$command = "$dep worker $task {$host->alias()} $configDirectory {$this->input} $decorated"; |
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if ($this->output->isDebug()) { |
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$this->output->writeln("[{$host->tag()}] $command"); |
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} |
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return Process::fromShellCommandline($command); |
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} |
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/** |
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* @param Process[] $processes |
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*/ |
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protected function startProcesses(array $processes) |
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{ |
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foreach ($processes as $process) { |
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$process->start(); |
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} |
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} |
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/** |
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* @param Process[] $processes |
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*/ |
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protected function areRunning(array $processes): bool |
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{ |
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foreach ($processes as $process) { |
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if ($process->isRunning()) { |
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return true; |
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} |
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} |
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return false; |
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} |
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/** |
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* @param Process[] $processes |
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*/ |
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protected function gatherOutput(array $processes, callable $callback) |
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{ |
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foreach ($processes as $process) { |
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$output = $process->getIncrementalOutput(); |
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if (strlen($output) !== 0) { |
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$callback($output); |
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} |
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$errorOutput = $process->getIncrementalErrorOutput(); |
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if (strlen($errorOutput) !== 0) { |
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$callback($errorOutput); |
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} |
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} |
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} |
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/** |
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* Gather the cumulative exit code for the processes. |
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*/ |
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protected function cumulativeExitCode(array $processes): int |
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{ |
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foreach ($processes as $process) { |
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if ($process->getExitCode() > 0) { |
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return $process->getExitCode(); |
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} |
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} |
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return 0; |
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} |
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} |
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deployphp /
deployer
