308 lines
13 KiB
PHP
308 lines
13 KiB
PHP
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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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 Symfony\Component\Messenger\Command;
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use Psr\Container\ContainerInterface;
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use Psr\Log\LoggerInterface;
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use Symfony\Component\Console\Attribute\AsCommand;
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use Symfony\Component\Console\Command\Command;
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use Symfony\Component\Console\Command\SignalableCommandInterface;
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use Symfony\Component\Console\Completion\CompletionInput;
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use Symfony\Component\Console\Completion\CompletionSuggestions;
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use Symfony\Component\Console\Exception\InvalidOptionException;
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use Symfony\Component\Console\Exception\RuntimeException;
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use Symfony\Component\Console\Input\InputArgument;
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use Symfony\Component\Console\Input\InputInterface;
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use Symfony\Component\Console\Input\InputOption;
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use Symfony\Component\Console\Output\ConsoleOutputInterface;
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use Symfony\Component\Console\Output\OutputInterface;
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use Symfony\Component\Console\Question\ChoiceQuestion;
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use Symfony\Component\Console\Style\SymfonyStyle;
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use Symfony\Component\EventDispatcher\EventDispatcherInterface;
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use Symfony\Component\Messenger\EventListener\ResetServicesListener;
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use Symfony\Component\Messenger\EventListener\StopWorkerOnFailureLimitListener;
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use Symfony\Component\Messenger\EventListener\StopWorkerOnMemoryLimitListener;
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use Symfony\Component\Messenger\EventListener\StopWorkerOnMessageLimitListener;
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use Symfony\Component\Messenger\EventListener\StopWorkerOnTimeLimitListener;
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use Symfony\Component\Messenger\RoutableMessageBus;
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use Symfony\Component\Messenger\Transport\Sync\SyncTransport;
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use Symfony\Component\Messenger\Worker;
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/**
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* @author Samuel Roze <samuel.roze@gmail.com>
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*/
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#[AsCommand(name: 'messenger:consume', description: 'Consume messages')]
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class ConsumeMessagesCommand extends Command implements SignalableCommandInterface
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{
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private ?Worker $worker = null;
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public function __construct(
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private RoutableMessageBus $routableBus,
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private ContainerInterface $receiverLocator,
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private EventDispatcherInterface $eventDispatcher,
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private ?LoggerInterface $logger = null,
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private array $receiverNames = [],
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private ?ResetServicesListener $resetServicesListener = null,
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private array $busIds = [],
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private ?ContainerInterface $rateLimiterLocator = null,
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private ?array $signals = null,
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) {
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parent::__construct();
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}
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protected function configure(): void
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{
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$defaultReceiverName = 1 === \count($this->receiverNames) ? current($this->receiverNames) : null;
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$this
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->setDefinition([
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new InputArgument('receivers', InputArgument::IS_ARRAY, 'Names of the receivers/transports to consume in order of priority', $defaultReceiverName ? [$defaultReceiverName] : []),
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new InputOption('limit', 'l', InputOption::VALUE_REQUIRED, 'Limit the number of received messages'),
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new InputOption('failure-limit', 'f', InputOption::VALUE_REQUIRED, 'The number of failed messages the worker can consume'),
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new InputOption('memory-limit', 'm', InputOption::VALUE_REQUIRED, 'The memory limit the worker can consume'),
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new InputOption('time-limit', 't', InputOption::VALUE_REQUIRED, 'The time limit in seconds the worker can handle new messages'),
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new InputOption('sleep', null, InputOption::VALUE_REQUIRED, 'Seconds to sleep before asking for new messages after no messages were found', 1),
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new InputOption('bus', 'b', InputOption::VALUE_REQUIRED, 'Name of the bus to which received messages should be dispatched (if not passed, bus is determined automatically)'),
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new InputOption('queues', null, InputOption::VALUE_REQUIRED | InputOption::VALUE_IS_ARRAY, 'Limit receivers to only consume from the specified queues'),
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new InputOption('no-reset', null, InputOption::VALUE_NONE, 'Do not reset container services after each message'),
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new InputOption('all', null, InputOption::VALUE_NONE, 'Consume messages from all receivers'),
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])
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->setHelp(<<<'EOF'
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The <info>%command.name%</info> command consumes messages and dispatches them to the message bus.
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<info>php %command.full_name% <receiver-name></info>
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To receive from multiple transports, pass each name:
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<info>php %command.full_name% receiver1 receiver2</info>
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Use the --limit option to limit the number of messages received:
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<info>php %command.full_name% <receiver-name> --limit=10</info>
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Use the --failure-limit option to stop the worker when the given number of failed messages is reached:
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<info>php %command.full_name% <receiver-name> --failure-limit=2</info>
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Use the --memory-limit option to stop the worker if it exceeds a given memory usage limit. You can use shorthand byte values [K, M or G]:
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<info>php %command.full_name% <receiver-name> --memory-limit=128M</info>
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Use the --time-limit option to stop the worker when the given time limit (in seconds) is reached.
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If a message is being handled, the worker will stop after the processing is finished:
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<info>php %command.full_name% <receiver-name> --time-limit=3600</info>
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Use the --bus option to specify the message bus to dispatch received messages
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to instead of trying to determine it automatically. This is required if the
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messages didn't originate from Messenger:
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<info>php %command.full_name% <receiver-name> --bus=event_bus</info>
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Use the --queues option to limit a receiver to only certain queues (only supported by some receivers):
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<info>php %command.full_name% <receiver-name> --queues=fasttrack</info>
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Use the --no-reset option to prevent services resetting after each message (may lead to leaking services' state between messages):
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<info>php %command.full_name% <receiver-name> --no-reset</info>
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Use the --all option to consume from all receivers:
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<info>php %command.full_name% --all</info>
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EOF
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)
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;
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}
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protected function interact(InputInterface $input, OutputInterface $output): void
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{
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$io = new SymfonyStyle($input, $output instanceof ConsoleOutputInterface ? $output->getErrorOutput() : $output);
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if ($input->getOption('all')) {
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return;
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}
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if ($this->receiverNames && !$input->getArgument('receivers')) {
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$io->block('Which transports/receivers do you want to consume?', null, 'fg=white;bg=blue', ' ', true);
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$io->writeln('Choose which receivers you want to consume messages from in order of priority.');
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if (\count($this->receiverNames) > 1) {
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$io->writeln(sprintf('Hint: to consume from multiple, use a list of their names, e.g. <comment>%s</comment>', implode(', ', $this->receiverNames)));
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}
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$question = new ChoiceQuestion('Select receivers to consume:', $this->receiverNames, 0);
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$question->setMultiselect(true);
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$input->setArgument('receivers', $io->askQuestion($question));
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}
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if (!$input->getArgument('receivers')) {
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throw new RuntimeException('Please pass at least one receiver.');
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}
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}
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protected function execute(InputInterface $input, OutputInterface $output): int
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{
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$receivers = [];
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$rateLimiters = [];
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$receiverNames = $input->getOption('all') ? $this->receiverNames : $input->getArgument('receivers');
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foreach ($receiverNames as $receiverName) {
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if (!$this->receiverLocator->has($receiverName)) {
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$message = sprintf('The receiver "%s" does not exist.', $receiverName);
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if ($this->receiverNames) {
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$message .= sprintf(' Valid receivers are: %s.', implode(', ', $this->receiverNames));
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}
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throw new RuntimeException($message);
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}
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$receiver = $this->receiverLocator->get($receiverName);
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if ($receiver instanceof SyncTransport) {
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$idx = array_search($receiverName, $receiverNames);
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unset($receiverNames[$idx]);
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continue;
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}
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$receivers[$receiverName] = $receiver;
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if ($this->rateLimiterLocator?->has($receiverName)) {
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$rateLimiters[$receiverName] = $this->rateLimiterLocator->get($receiverName);
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}
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}
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if (null !== $this->resetServicesListener && !$input->getOption('no-reset')) {
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$this->eventDispatcher->addSubscriber($this->resetServicesListener);
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}
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$stopsWhen = [];
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if (null !== $limit = $input->getOption('limit')) {
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if (!is_numeric($limit) || 0 >= $limit) {
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throw new InvalidOptionException(sprintf('Option "limit" must be a positive integer, "%s" passed.', $limit));
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}
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$stopsWhen[] = "processed {$limit} messages";
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$this->eventDispatcher->addSubscriber(new StopWorkerOnMessageLimitListener($limit, $this->logger));
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}
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if ($failureLimit = $input->getOption('failure-limit')) {
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$stopsWhen[] = "reached {$failureLimit} failed messages";
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$this->eventDispatcher->addSubscriber(new StopWorkerOnFailureLimitListener($failureLimit, $this->logger));
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}
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if ($memoryLimit = $input->getOption('memory-limit')) {
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$stopsWhen[] = "exceeded {$memoryLimit} of memory";
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$this->eventDispatcher->addSubscriber(new StopWorkerOnMemoryLimitListener($this->convertToBytes($memoryLimit), $this->logger));
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}
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if (null !== $timeLimit = $input->getOption('time-limit')) {
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if (!is_numeric($timeLimit) || 0 >= $timeLimit) {
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throw new InvalidOptionException(sprintf('Option "time-limit" must be a positive integer, "%s" passed.', $timeLimit));
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}
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$stopsWhen[] = "been running for {$timeLimit}s";
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$this->eventDispatcher->addSubscriber(new StopWorkerOnTimeLimitListener($timeLimit, $this->logger));
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}
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$stopsWhen[] = 'received a stop signal via the messenger:stop-workers command';
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$io = new SymfonyStyle($input, $output instanceof ConsoleOutputInterface ? $output->getErrorOutput() : $output);
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$io->success(sprintf('Consuming messages from transport%s "%s".', \count($receivers) > 1 ? 's' : '', implode(', ', $receiverNames)));
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if ($stopsWhen) {
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$last = array_pop($stopsWhen);
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$stopsWhen = ($stopsWhen ? implode(', ', $stopsWhen).' or ' : '').$last;
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$io->comment("The worker will automatically exit once it has {$stopsWhen}.");
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}
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$io->comment('Quit the worker with CONTROL-C.');
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if (OutputInterface::VERBOSITY_VERBOSE > $output->getVerbosity()) {
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$io->comment('Re-run the command with a -vv option to see logs about consumed messages.');
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}
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$bus = $input->getOption('bus') ? $this->routableBus->getMessageBus($input->getOption('bus')) : $this->routableBus;
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$this->worker = new Worker($receivers, $bus, $this->eventDispatcher, $this->logger, $rateLimiters);
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$options = [
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'sleep' => $input->getOption('sleep') * 1000000,
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];
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if ($queues = $input->getOption('queues')) {
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$options['queues'] = $queues;
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}
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try {
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$this->worker->run($options);
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} finally {
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$this->worker = null;
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}
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return 0;
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}
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public function complete(CompletionInput $input, CompletionSuggestions $suggestions): void
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{
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if ($input->mustSuggestArgumentValuesFor('receivers')) {
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$suggestions->suggestValues(array_diff($this->receiverNames, array_diff($input->getArgument('receivers'), [$input->getCompletionValue()])));
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return;
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}
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if ($input->mustSuggestOptionValuesFor('bus')) {
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$suggestions->suggestValues($this->busIds);
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}
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}
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public function getSubscribedSignals(): array
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{
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return $this->signals ?? (\extension_loaded('pcntl') ? [\SIGTERM, \SIGINT, \SIGQUIT] : []);
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}
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public function handleSignal(int $signal, int|false $previousExitCode = 0): int|false
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{
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if (!$this->worker) {
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return false;
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}
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$this->logger?->info('Received signal {signal}.', ['signal' => $signal, 'transport_names' => $this->worker->getMetadata()->getTransportNames()]);
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$this->worker->stop();
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return false;
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}
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private function convertToBytes(string $memoryLimit): int
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{
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$memoryLimit = strtolower($memoryLimit);
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$max = ltrim($memoryLimit, '+');
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if (str_starts_with($max, '0x')) {
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$max = \intval($max, 16);
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} elseif (str_starts_with($max, '0')) {
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$max = \intval($max, 8);
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} else {
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$max = (int) $max;
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}
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switch (substr(rtrim($memoryLimit, 'b'), -1)) {
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case 't': $max *= 1024;
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// no break
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case 'g': $max *= 1024;
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// no break
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case 'm': $max *= 1024;
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// no break
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case 'k': $max *= 1024;
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}
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return $max;
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}
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}
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