584 lines
22 KiB
PHP
584 lines
22 KiB
PHP
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<?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\Bridge\Amqp\Transport;
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use Symfony\Component\Messenger\Exception\InvalidArgumentException;
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use Symfony\Component\Messenger\Exception\LogicException;
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/**
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* An AMQP connection.
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*
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* @author Samuel Roze <samuel.roze@gmail.com>
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*
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* @final
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*/
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class Connection
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{
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private const ARGUMENTS_AS_INTEGER = [
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'x-delay',
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'x-expires',
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'x-max-length',
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'x-max-length-bytes',
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'x-max-priority',
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'x-message-ttl',
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];
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private const AVAILABLE_OPTIONS = [
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'host',
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'port',
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'vhost',
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'user',
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'login',
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'password',
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'queues',
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'exchange',
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'delay',
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'auto_setup',
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'prefetch_count',
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'retry',
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'persistent',
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'frame_max',
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'channel_max',
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'heartbeat',
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'read_timeout',
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'write_timeout',
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'confirm_timeout',
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'connect_timeout',
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'cacert',
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'cert',
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'key',
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'verify',
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'sasl_method',
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];
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private const AVAILABLE_QUEUE_OPTIONS = [
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'binding_keys',
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'binding_arguments',
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'flags',
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'arguments',
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];
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private const AVAILABLE_EXCHANGE_OPTIONS = [
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'name',
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'type',
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'default_publish_routing_key',
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'flags',
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'arguments',
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];
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private $connectionOptions;
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private $exchangeOptions;
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private $queuesOptions;
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private $amqpFactory;
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private $autoSetupExchange;
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private $autoSetupDelayExchange;
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/**
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* @var \AMQPChannel|null
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*/
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private $amqpChannel;
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/**
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* @var \AMQPExchange|null
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*/
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private $amqpExchange;
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/**
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* @var \AMQPQueue[]|null
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*/
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private $amqpQueues = [];
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/**
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* @var \AMQPExchange|null
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*/
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private $amqpDelayExchange;
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public function __construct(array $connectionOptions, array $exchangeOptions, array $queuesOptions, AmqpFactory $amqpFactory = null)
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{
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if (!\extension_loaded('amqp')) {
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throw new LogicException(sprintf('You cannot use the "%s" as the "amqp" extension is not installed.', __CLASS__));
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}
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$this->connectionOptions = array_replace_recursive([
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'delay' => [
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'exchange_name' => 'delays',
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'queue_name_pattern' => 'delay_%exchange_name%_%routing_key%_%delay%',
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],
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], $connectionOptions);
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$this->autoSetupExchange = $this->autoSetupDelayExchange = $connectionOptions['auto_setup'] ?? true;
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$this->exchangeOptions = $exchangeOptions;
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$this->queuesOptions = $queuesOptions;
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$this->amqpFactory = $amqpFactory ?? new AmqpFactory();
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}
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/**
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* Creates a connection based on the DSN and options.
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*
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* Available options:
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*
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* * host: Hostname of the AMQP service
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* * port: Port of the AMQP service
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* * vhost: Virtual Host to use with the AMQP service
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* * user|login: Username to use to connect the AMQP service
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* * password: Password to use to connect to the AMQP service
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* * read_timeout: Timeout in for income activity. Note: 0 or greater seconds. May be fractional.
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* * write_timeout: Timeout in for outcome activity. Note: 0 or greater seconds. May be fractional.
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* * connect_timeout: Connection timeout. Note: 0 or greater seconds. May be fractional.
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* * confirm_timeout: Timeout in seconds for confirmation, if none specified transport will not wait for message confirmation. Note: 0 or greater seconds. May be fractional.
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* * queues[name]: An array of queues, keyed by the name
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* * binding_keys: The binding keys (if any) to bind to this queue
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* * binding_arguments: Arguments to be used while binding the queue.
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* * flags: Queue flags (Default: AMQP_DURABLE)
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* * arguments: Extra arguments
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* * exchange:
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* * name: Name of the exchange
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* * type: Type of exchange (Default: fanout)
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* * default_publish_routing_key: Routing key to use when publishing, if none is specified on the message
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* * flags: Exchange flags (Default: AMQP_DURABLE)
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* * arguments: Extra arguments
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* * delay:
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* * queue_name_pattern: Pattern to use to create the queues (Default: "delay_%exchange_name%_%routing_key%_%delay%")
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* * exchange_name: Name of the exchange to be used for the delayed/retried messages (Default: "delays")
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* * auto_setup: Enable or not the auto-setup of queues and exchanges (Default: true)
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*
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* * Connection tuning options (see http://www.rabbitmq.com/amqp-0-9-1-reference.html#connection.tune for details):
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* * channel_max: Specifies highest channel number that the server permits. 0 means standard extension limit
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* (see PHP_AMQP_MAX_CHANNELS constant)
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* * frame_max: The largest frame size that the server proposes for the connection, including frame header
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* and end-byte. 0 means standard extension limit (depends on librabbimq default frame size limit)
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* * heartbeat: The delay, in seconds, of the connection heartbeat that the server wants.
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* 0 means the server does not want a heartbeat. Note, librabbitmq has limited heartbeat support,
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* which means heartbeats checked only during blocking calls.
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*
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* TLS support (see https://www.rabbitmq.com/ssl.html for details):
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* * cacert: Path to the CA cert file in PEM format.
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* * cert: Path to the client certificate in PEM format.
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* * key: Path to the client key in PEM format.
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* * verify: Enable or disable peer verification. If peer verification is enabled then the common name in the
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* server certificate must match the server name. Peer verification is enabled by default.
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*/
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public static function fromDsn(string $dsn, array $options = [], AmqpFactory $amqpFactory = null): self
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{
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if (false === $parsedUrl = parse_url($dsn)) {
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// this is a valid URI that parse_url cannot handle when you want to pass all parameters as options
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if (!\in_array($dsn, ['amqp://', 'amqps://'])) {
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throw new InvalidArgumentException(sprintf('The given AMQP DSN "%s" is invalid.', $dsn));
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}
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$parsedUrl = [];
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}
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$useAmqps = 0 === strpos($dsn, 'amqps://');
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$pathParts = isset($parsedUrl['path']) ? explode('/', trim($parsedUrl['path'], '/')) : [];
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$exchangeName = $pathParts[1] ?? 'messages';
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parse_str($parsedUrl['query'] ?? '', $parsedQuery);
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$port = $useAmqps ? 5671 : 5672;
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$amqpOptions = array_replace_recursive([
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'host' => $parsedUrl['host'] ?? 'localhost',
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'port' => $parsedUrl['port'] ?? $port,
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'vhost' => isset($pathParts[0]) ? urldecode($pathParts[0]) : '/',
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'exchange' => [
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'name' => $exchangeName,
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],
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], $options, $parsedQuery);
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self::validateOptions($amqpOptions);
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if (isset($parsedUrl['user'])) {
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$amqpOptions['login'] = urldecode($parsedUrl['user']);
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}
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if (isset($parsedUrl['pass'])) {
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$amqpOptions['password'] = urldecode($parsedUrl['pass']);
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}
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if (!isset($amqpOptions['queues'])) {
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$amqpOptions['queues'][$exchangeName] = [];
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}
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$exchangeOptions = $amqpOptions['exchange'];
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$queuesOptions = $amqpOptions['queues'];
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unset($amqpOptions['queues'], $amqpOptions['exchange']);
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if (isset($amqpOptions['auto_setup'])) {
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$amqpOptions['auto_setup'] = filter_var($amqpOptions['auto_setup'], \FILTER_VALIDATE_BOOLEAN);
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}
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$queuesOptions = array_map(function ($queueOptions) {
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if (!\is_array($queueOptions)) {
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$queueOptions = [];
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}
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if (\is_array($queueOptions['arguments'] ?? false)) {
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$queueOptions['arguments'] = self::normalizeQueueArguments($queueOptions['arguments']);
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}
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return $queueOptions;
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}, $queuesOptions);
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if (!$useAmqps) {
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unset($amqpOptions['cacert'], $amqpOptions['cert'], $amqpOptions['key'], $amqpOptions['verify']);
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}
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if ($useAmqps && !self::hasCaCertConfigured($amqpOptions)) {
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throw new InvalidArgumentException('No CA certificate has been provided. Set "amqp.cacert" in your php.ini or pass the "cacert" parameter in the DSN to use SSL. Alternatively, you can use amqp:// to use without SSL.');
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}
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return new self($amqpOptions, $exchangeOptions, $queuesOptions, $amqpFactory);
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}
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private static function validateOptions(array $options): void
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{
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if (0 < \count($invalidOptions = array_diff(array_keys($options), self::AVAILABLE_OPTIONS))) {
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trigger_deprecation('symfony/messenger', '5.1', 'Invalid option(s) "%s" passed to the AMQP Messenger transport. Passing invalid options is deprecated.', implode('", "', $invalidOptions));
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}
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if (isset($options['prefetch_count'])) {
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trigger_deprecation('symfony/messenger', '5.3', 'The "prefetch_count" option passed to the AMQP Messenger transport has no effect and should not be used.');
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}
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if (\is_array($options['queues'] ?? false)) {
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foreach ($options['queues'] as $queue) {
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if (!\is_array($queue)) {
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continue;
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}
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if (0 < \count($invalidQueueOptions = array_diff(array_keys($queue), self::AVAILABLE_QUEUE_OPTIONS))) {
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trigger_deprecation('symfony/messenger', '5.1', 'Invalid queue option(s) "%s" passed to the AMQP Messenger transport. Passing invalid queue options is deprecated.', implode('", "', $invalidQueueOptions));
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}
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}
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}
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if (\is_array($options['exchange'] ?? false)
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&& 0 < \count($invalidExchangeOptions = array_diff(array_keys($options['exchange']), self::AVAILABLE_EXCHANGE_OPTIONS))) {
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trigger_deprecation('symfony/messenger', '5.1', 'Invalid exchange option(s) "%s" passed to the AMQP Messenger transport. Passing invalid exchange options is deprecated.', implode('", "', $invalidExchangeOptions));
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}
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}
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private static function normalizeQueueArguments(array $arguments): array
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{
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foreach (self::ARGUMENTS_AS_INTEGER as $key) {
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if (!\array_key_exists($key, $arguments)) {
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continue;
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}
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if (!is_numeric($arguments[$key])) {
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throw new InvalidArgumentException(sprintf('Integer expected for queue argument "%s", "%s" given.', $key, get_debug_type($arguments[$key])));
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}
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$arguments[$key] = (int) $arguments[$key];
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}
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return $arguments;
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}
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private static function hasCaCertConfigured(array $amqpOptions): bool
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{
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return (isset($amqpOptions['cacert']) && '' !== $amqpOptions['cacert']) || '' !== \ini_get('amqp.cacert');
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}
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/**
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* @throws \AMQPException
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*/
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public function publish(string $body, array $headers = [], int $delayInMs = 0, AmqpStamp $amqpStamp = null): void
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{
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$this->clearWhenDisconnected();
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if ($this->autoSetupExchange) {
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$this->setupExchangeAndQueues(); // also setup normal exchange for delayed messages so delay queue can DLX messages to it
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}
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if (0 !== $delayInMs) {
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$this->publishWithDelay($body, $headers, $delayInMs, $amqpStamp);
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return;
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}
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$this->publishOnExchange(
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$this->exchange(),
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$body,
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$this->getRoutingKeyForMessage($amqpStamp),
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$headers,
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$amqpStamp
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);
|
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}
|
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/**
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* Returns an approximate count of the messages in defined queues.
|
||
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*/
|
||
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public function countMessagesInQueues(): int
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{
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return array_sum(array_map(function ($queueName) {
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return $this->queue($queueName)->declareQueue();
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}, $this->getQueueNames()));
|
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}
|
||
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|
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/**
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* @throws \AMQPException
|
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*/
|
||
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private function publishWithDelay(string $body, array $headers, int $delay, AmqpStamp $amqpStamp = null)
|
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{
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$routingKey = $this->getRoutingKeyForMessage($amqpStamp);
|
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$isRetryAttempt = $amqpStamp ? $amqpStamp->isRetryAttempt() : false;
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$this->setupDelay($delay, $routingKey, $isRetryAttempt);
|
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$this->publishOnExchange(
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$this->getDelayExchange(),
|
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$body,
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$this->getRoutingKeyForDelay($delay, $routingKey, $isRetryAttempt),
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$headers,
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$amqpStamp
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);
|
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}
|
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|
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private function publishOnExchange(\AMQPExchange $exchange, string $body, string $routingKey = null, array $headers = [], AmqpStamp $amqpStamp = null)
|
||
|
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{
|
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$attributes = $amqpStamp ? $amqpStamp->getAttributes() : [];
|
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|
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$attributes['headers'] = array_merge($attributes['headers'] ?? [], $headers);
|
||
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$attributes['delivery_mode'] = $attributes['delivery_mode'] ?? 2;
|
||
|
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$attributes['timestamp'] = $attributes['timestamp'] ?? time();
|
||
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$exchange->publish(
|
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$body,
|
||
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$routingKey,
|
||
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$amqpStamp ? $amqpStamp->getFlags() : \AMQP_NOPARAM,
|
||
|
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$attributes
|
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);
|
||
|
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|
||
|
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if ('' !== ($this->connectionOptions['confirm_timeout'] ?? '')) {
|
||
|
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$this->channel()->waitForConfirm((float) $this->connectionOptions['confirm_timeout']);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private function setupDelay(int $delay, ?string $routingKey, bool $isRetryAttempt)
|
||
|
|
{
|
||
|
|
if ($this->autoSetupDelayExchange) {
|
||
|
|
$this->setupDelayExchange();
|
||
|
|
}
|
||
|
|
|
||
|
|
$queue = $this->createDelayQueue($delay, $routingKey, $isRetryAttempt);
|
||
|
|
$queue->declareQueue(); // the delay queue always need to be declared because the name is dynamic and cannot be declared in advance
|
||
|
|
$queue->bind($this->connectionOptions['delay']['exchange_name'], $this->getRoutingKeyForDelay($delay, $routingKey, $isRetryAttempt));
|
||
|
|
}
|
||
|
|
|
||
|
|
private function getDelayExchange(): \AMQPExchange
|
||
|
|
{
|
||
|
|
if (null === $this->amqpDelayExchange) {
|
||
|
|
$this->amqpDelayExchange = $this->amqpFactory->createExchange($this->channel());
|
||
|
|
$this->amqpDelayExchange->setName($this->connectionOptions['delay']['exchange_name']);
|
||
|
|
$this->amqpDelayExchange->setType(\AMQP_EX_TYPE_DIRECT);
|
||
|
|
$this->amqpDelayExchange->setFlags(\AMQP_DURABLE);
|
||
|
|
}
|
||
|
|
|
||
|
|
return $this->amqpDelayExchange;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Creates a delay queue that will delay for a certain amount of time.
|
||
|
|
*
|
||
|
|
* This works by setting message TTL for the delay and pointing
|
||
|
|
* the dead letter exchange to the original exchange. The result
|
||
|
|
* is that after the TTL, the message is sent to the dead-letter-exchange,
|
||
|
|
* which is the original exchange, resulting on it being put back into
|
||
|
|
* the original queue.
|
||
|
|
*/
|
||
|
|
private function createDelayQueue(int $delay, ?string $routingKey, bool $isRetryAttempt): \AMQPQueue
|
||
|
|
{
|
||
|
|
$queue = $this->amqpFactory->createQueue($this->channel());
|
||
|
|
$queue->setName($this->getRoutingKeyForDelay($delay, $routingKey, $isRetryAttempt));
|
||
|
|
$queue->setFlags(\AMQP_DURABLE);
|
||
|
|
$queue->setArguments([
|
||
|
|
'x-message-ttl' => $delay,
|
||
|
|
// delete the delay queue 10 seconds after the message expires
|
||
|
|
// publishing another message redeclares the queue which renews the lease
|
||
|
|
'x-expires' => $delay + 10000,
|
||
|
|
// message should be broadcasted to all consumers during delay, but to only one queue during retry
|
||
|
|
// empty name is default direct exchange
|
||
|
|
'x-dead-letter-exchange' => $isRetryAttempt ? '' : $this->exchangeOptions['name'],
|
||
|
|
// after being released from to DLX, make sure the original routing key will be used
|
||
|
|
// we must use an empty string instead of null for the argument to be picked up
|
||
|
|
'x-dead-letter-routing-key' => $routingKey ?? '',
|
||
|
|
]);
|
||
|
|
|
||
|
|
return $queue;
|
||
|
|
}
|
||
|
|
|
||
|
|
private function getRoutingKeyForDelay(int $delay, ?string $finalRoutingKey, bool $isRetryAttempt): string
|
||
|
|
{
|
||
|
|
$action = $isRetryAttempt ? '_retry' : '_delay';
|
||
|
|
|
||
|
|
return str_replace(
|
||
|
|
['%delay%', '%exchange_name%', '%routing_key%'],
|
||
|
|
[$delay, $this->exchangeOptions['name'], $finalRoutingKey ?? ''],
|
||
|
|
$this->connectionOptions['delay']['queue_name_pattern']
|
||
|
|
).$action;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Gets a message from the specified queue.
|
||
|
|
*
|
||
|
|
* @throws \AMQPException
|
||
|
|
*/
|
||
|
|
public function get(string $queueName): ?\AMQPEnvelope
|
||
|
|
{
|
||
|
|
$this->clearWhenDisconnected();
|
||
|
|
|
||
|
|
if ($this->autoSetupExchange) {
|
||
|
|
$this->setupExchangeAndQueues();
|
||
|
|
}
|
||
|
|
|
||
|
|
if (false !== $message = $this->queue($queueName)->get()) {
|
||
|
|
return $message;
|
||
|
|
}
|
||
|
|
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
|
||
|
|
public function ack(\AMQPEnvelope $message, string $queueName): bool
|
||
|
|
{
|
||
|
|
return $this->queue($queueName)->ack($message->getDeliveryTag());
|
||
|
|
}
|
||
|
|
|
||
|
|
public function nack(\AMQPEnvelope $message, string $queueName, int $flags = \AMQP_NOPARAM): bool
|
||
|
|
{
|
||
|
|
return $this->queue($queueName)->nack($message->getDeliveryTag(), $flags);
|
||
|
|
}
|
||
|
|
|
||
|
|
public function setup(): void
|
||
|
|
{
|
||
|
|
$this->setupExchangeAndQueues();
|
||
|
|
$this->setupDelayExchange();
|
||
|
|
}
|
||
|
|
|
||
|
|
private function setupExchangeAndQueues(): void
|
||
|
|
{
|
||
|
|
$this->exchange()->declareExchange();
|
||
|
|
|
||
|
|
foreach ($this->queuesOptions as $queueName => $queueConfig) {
|
||
|
|
$this->queue($queueName)->declareQueue();
|
||
|
|
foreach ($queueConfig['binding_keys'] ?? [null] as $bindingKey) {
|
||
|
|
$this->queue($queueName)->bind($this->exchangeOptions['name'], $bindingKey, $queueConfig['binding_arguments'] ?? []);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
$this->autoSetupExchange = false;
|
||
|
|
}
|
||
|
|
|
||
|
|
private function setupDelayExchange(): void
|
||
|
|
{
|
||
|
|
$this->getDelayExchange()->declareExchange();
|
||
|
|
$this->autoSetupDelayExchange = false;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @return string[]
|
||
|
|
*/
|
||
|
|
public function getQueueNames(): array
|
||
|
|
{
|
||
|
|
return array_keys($this->queuesOptions);
|
||
|
|
}
|
||
|
|
|
||
|
|
public function channel(): \AMQPChannel
|
||
|
|
{
|
||
|
|
if (null === $this->amqpChannel) {
|
||
|
|
$connection = $this->amqpFactory->createConnection($this->connectionOptions);
|
||
|
|
$connectMethod = 'true' === ($this->connectionOptions['persistent'] ?? 'false') ? 'pconnect' : 'connect';
|
||
|
|
|
||
|
|
try {
|
||
|
|
$connection->{$connectMethod}();
|
||
|
|
} catch (\AMQPConnectionException $e) {
|
||
|
|
throw new \AMQPException('Could not connect to the AMQP server. Please verify the provided DSN.', 0, $e);
|
||
|
|
}
|
||
|
|
$this->amqpChannel = $this->amqpFactory->createChannel($connection);
|
||
|
|
|
||
|
|
if ('' !== ($this->connectionOptions['confirm_timeout'] ?? '')) {
|
||
|
|
$this->amqpChannel->confirmSelect();
|
||
|
|
$this->amqpChannel->setConfirmCallback(
|
||
|
|
static function (): bool {
|
||
|
|
return false;
|
||
|
|
},
|
||
|
|
static function (): bool {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return $this->amqpChannel;
|
||
|
|
}
|
||
|
|
|
||
|
|
public function queue(string $queueName): \AMQPQueue
|
||
|
|
{
|
||
|
|
if (!isset($this->amqpQueues[$queueName])) {
|
||
|
|
$queueConfig = $this->queuesOptions[$queueName];
|
||
|
|
|
||
|
|
$amqpQueue = $this->amqpFactory->createQueue($this->channel());
|
||
|
|
$amqpQueue->setName($queueName);
|
||
|
|
$amqpQueue->setFlags($queueConfig['flags'] ?? \AMQP_DURABLE);
|
||
|
|
|
||
|
|
if (isset($queueConfig['arguments'])) {
|
||
|
|
$amqpQueue->setArguments($queueConfig['arguments']);
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->amqpQueues[$queueName] = $amqpQueue;
|
||
|
|
}
|
||
|
|
|
||
|
|
return $this->amqpQueues[$queueName];
|
||
|
|
}
|
||
|
|
|
||
|
|
public function exchange(): \AMQPExchange
|
||
|
|
{
|
||
|
|
if (null === $this->amqpExchange) {
|
||
|
|
$this->amqpExchange = $this->amqpFactory->createExchange($this->channel());
|
||
|
|
$this->amqpExchange->setName($this->exchangeOptions['name']);
|
||
|
|
$this->amqpExchange->setType($this->exchangeOptions['type'] ?? \AMQP_EX_TYPE_FANOUT);
|
||
|
|
$this->amqpExchange->setFlags($this->exchangeOptions['flags'] ?? \AMQP_DURABLE);
|
||
|
|
|
||
|
|
if (isset($this->exchangeOptions['arguments'])) {
|
||
|
|
$this->amqpExchange->setArguments($this->exchangeOptions['arguments']);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return $this->amqpExchange;
|
||
|
|
}
|
||
|
|
|
||
|
|
private function clearWhenDisconnected(): void
|
||
|
|
{
|
||
|
|
if (!$this->channel()->isConnected()) {
|
||
|
|
$this->amqpChannel = null;
|
||
|
|
$this->amqpQueues = [];
|
||
|
|
$this->amqpExchange = null;
|
||
|
|
$this->amqpDelayExchange = null;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private function getDefaultPublishRoutingKey(): ?string
|
||
|
|
{
|
||
|
|
return $this->exchangeOptions['default_publish_routing_key'] ?? null;
|
||
|
|
}
|
||
|
|
|
||
|
|
public function purgeQueues()
|
||
|
|
{
|
||
|
|
foreach ($this->getQueueNames() as $queueName) {
|
||
|
|
$this->queue($queueName)->purge();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private function getRoutingKeyForMessage(?AmqpStamp $amqpStamp): ?string
|
||
|
|
{
|
||
|
|
return (null !== $amqpStamp ? $amqpStamp->getRoutingKey() : null) ?? $this->getDefaultPublishRoutingKey();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!class_exists(\Symfony\Component\Messenger\Transport\AmqpExt\Connection::class, false)) {
|
||
|
|
class_alias(Connection::class, \Symfony\Component\Messenger\Transport\AmqpExt\Connection::class);
|
||
|
|
}
|