How to use apache kafka consumer in laravel?

by jasen_gottlieb , in category: PHP Frameworks , 5 days ago

How to use apache kafka consumer in laravel?

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1 answer

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by rollin , 4 days ago

@jasen_gottlieb 

To use Apache Kafka consumer in a Laravel application, you can follow these steps:

  1. Install the php-rdkafka extension in your Laravel project. You can do this by adding the following line to your composer.json file:
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"arnaud-lb/php-rdkafka": "^5.0"


Then run composer install to install the extension.

  1. Create a KafkaConsumer class in your Laravel project that uses the php-rdkafka extension to consume messages from a Kafka topic. For example:
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use RdKafkaConsumer;
use RdKafkaConsumerTopic;
use RdKafkaMessage;

class KafkaConsumer {
    private $consumer;
    private $topicName;

    public function __construct($brokers, $topicName) {
        $this->consumer = new Consumer();
        $this->consumer->setLogLevel(LOG_DEBUG);
        $this->consumer->addBrokers($brokers);
        
        $this->topicName = $topicName;
    }

    public function consumeMessages() {
        $topic = $this->consumer->newTopic($this->topicName);
        $topic->consumeStart(0, RD_KAFKA_OFFSET_END);
        
        while (true) {
            $message = $topic->consume(0, 1000);
            
            if ($message->err) {
                echo "Error: {$message->errstr()}";
            } else {
                echo "Received message: {$message->payload}
";
            }
        }
    }
}


  1. Use the KafkaConsumer class in your Laravel controller or service to consume messages from the Kafka topic. For example:
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use AppKafkaConsumer;

class KafkaController extends Controller {
    public function consumeMessages() {
        $brokers = "localhost";
        $topicName = "test-topic";
        
        $consumer = new KafkaConsumer($brokers, $topicName);
        $consumer->consumeMessages();
    }
}


  1. Set up the Kafka server and create a topic for the Laravel application to consume messages from.
  2. Run the Laravel application and call the consumeMessages method in the controller to start consuming messages from the Kafka topic.


By following these steps, you can use Apache Kafka consumer in your Laravel application to consume messages from a Kafka topic.