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feat(apiserver): Create API Server component (#32)
API Server component will allow to manage Swoole HTTP Server trough HTTP interface. Command `swoole:server:status` is added to get informations about currently running HTTP server. Closes #2
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155 changes: 155 additions & 0 deletions
155
src/Bridge/Symfony/Bundle/Command/ServerStatusCommand.php
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,155 @@ | ||
| <?php | ||
|
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| declare(strict_types=1); | ||
|
|
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| namespace K911\Swoole\Bridge\Symfony\Bundle\Command; | ||
|
|
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| use Assert\Assertion; | ||
| use K911\Swoole\Server\Api\ApiServerInterface; | ||
| use K911\Swoole\Server\Config\Socket; | ||
| use K911\Swoole\Server\Config\Sockets; | ||
| use Symfony\Component\Console\Command\Command; | ||
| use Symfony\Component\Console\Input\InputInterface; | ||
| use Symfony\Component\Console\Input\InputOption; | ||
| use Symfony\Component\Console\Output\OutputInterface; | ||
| use Symfony\Component\Console\Style\SymfonyStyle; | ||
| use Symfony\Component\DependencyInjection\ParameterBag\ParameterBagInterface; | ||
|
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| final class ServerStatusCommand extends Command | ||
| { | ||
| private $apiServer; | ||
| private $sockets; | ||
| private $parameterBag; | ||
| private $testing = false; | ||
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| public function __construct( | ||
| Sockets $sockets, | ||
| ApiServerInterface $apiServer, | ||
| ParameterBagInterface $parameterBag | ||
| ) { | ||
| $this->apiServer = $apiServer; | ||
| $this->sockets = $sockets; | ||
| $this->parameterBag = $parameterBag; | ||
|
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| parent::__construct(); | ||
| } | ||
|
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| /** | ||
| * {@inheritdoc} | ||
| */ | ||
| protected function configure(): void | ||
| { | ||
| $this->setDescription('Get current status of the Swoole HTTP Server by querying running API Server.') | ||
| ->addOption('api-host', null, InputOption::VALUE_REQUIRED, 'API Server listens on this host.', $this->parameterBag->get('swoole.http_server.api.host')) | ||
| ->addOption('api-port', null, InputOption::VALUE_REQUIRED, 'API Server listens on this port.', $this->parameterBag->get('swoole.http_server.api.port')); | ||
| } | ||
|
|
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| /** | ||
| * {@inheritdoc} | ||
| * | ||
| * @throws \Assert\AssertionFailedException | ||
| */ | ||
| protected function execute(InputInterface $input, OutputInterface $output): int | ||
| { | ||
| $io = new SymfonyStyle($input, $output); | ||
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| $this->prepareClientConfiguration($input); | ||
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| $this->goAndWait(function () use ($io): void { | ||
| try { | ||
| $status = $this->apiServer->status(); | ||
| $metrics = $this->apiServer->metrics(); | ||
| } catch (\RuntimeException $runtimeException) { | ||
| $io->error('Could not connect to Swoole API Server'); | ||
|
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| return; | ||
| } | ||
| $io->success('Fetched status and metrics'); | ||
| $this->showStatus($io, $status); | ||
| $this->showMetrics($io, $metrics); | ||
| }); | ||
|
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| return 0; | ||
| } | ||
|
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| public function goAndWait(callable $callback): void | ||
| { | ||
| if ($this->testing) { | ||
| $callback(); | ||
|
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| return; | ||
| } | ||
|
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| \go($callback); | ||
| \swoole_event_wait(); | ||
| } | ||
|
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| private function showStatus(SymfonyStyle $io, array $status): void | ||
| { | ||
| $server = $status['server']; | ||
| $processes = $server['processes']; | ||
|
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| $rows = [ | ||
| ['Host', $server['host']], | ||
| ['Port', $server['port']], | ||
| ['Running mode', $server['runningMode']], | ||
| ['Master PID', $processes['master']['pid']], | ||
| ['Manager PID', $processes['manager']['pid']], | ||
| [\sprintf('Worker[%d] PID', $processes['worker']['id']), $processes['worker']['pid']], | ||
| ]; | ||
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| foreach ($server['listeners'] as $id => ['host' => $host, 'port' => $port]) { | ||
| $rows[] = [\sprintf('Listener[%d] Host', $id), $host]; | ||
| $rows[] = [\sprintf('Listener[%d] Port', $id), $port]; | ||
| } | ||
|
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| $io->table([ | ||
| 'Configuration', 'Value', | ||
| ], $rows); | ||
| } | ||
|
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| private function showMetrics(SymfonyStyle $io, array $metrics): void | ||
| { | ||
| $date = \DateTimeImmutable::createFromFormat(DATE_ATOM, $metrics['date']); | ||
| Assertion::isInstanceOf($date, \DateTimeImmutable::class); | ||
| $server = $metrics['server']; | ||
| $runningSeconds = $date->getTimestamp() - $server['start_time']; | ||
|
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| $idleWorkers = $server['idle_worker_num']; | ||
| $workers = $server['worker_num']; | ||
| $activeWorkers = $workers - $idleWorkers; | ||
|
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| $io->table([ | ||
| 'Metric', 'Quantity', 'Unit', | ||
| ], [ | ||
| ['Requests', $server['request_count'], '1'], | ||
| ['Up time', $runningSeconds, 'Seconds'], | ||
| ['Active connections', $server['connection_num'], '1'], | ||
| ['Accepted connections', $server['accept_count'], '1'], | ||
| ['Closed connections', $server['close_count'], '1'], | ||
| ['Active workers', $activeWorkers, '1'], | ||
| ['Idle workers', $idleWorkers, '1'], | ||
| ]); | ||
| } | ||
|
|
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| /** | ||
| * @param InputInterface $input | ||
| * | ||
| * @throws \Assert\AssertionFailedException | ||
| */ | ||
| protected function prepareClientConfiguration(InputInterface $input): void | ||
| { | ||
| $host = $input->getOption('api-host'); | ||
| $port = $input->getOption('api-port'); | ||
|
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| Assertion::numeric($port, 'Port must be a number.'); | ||
| Assertion::string($host, 'Host must be a string.'); | ||
|
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| $this->sockets->changeApiSocket(new Socket($host, (int) $port)); | ||
| } | ||
|
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| public function enableTestMode(): void | ||
| { | ||
| $this->testing = true; | ||
| } | ||
| } |
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