produce

Description

public function produce(
    int $partition,
    int $msgFlags,
    ?string $payload = null,
    ?string $key = null
): void {}

Produce a message to a topic partition
This is an asynchronous and non-blocking call

Parameter details

partition: can be either a partition number or RD_KAFKA_PARTITION_UA for automatic partitioning
msgflags: 0 or RD_KAFKA_MSG_F_BLOCK to block the producer if the queue is full
key: message key, if non-null the topic partitioner will calculate the partition according to the key

Example

$conf = new SimpleKafkaClient\Configuration();
$conf->set('auto.offset.reset', 'earliest');
$producer = new SimpleKafkaClient\Producer($conf);
$producerTopic = $producer->getTopicHandle('test-topic');
$producerTopic->produce(
    RD_KAFKA_PARTITION_UA,
    RD_KAFKA_MSG_F_BLOCK, // will block produce if queue is full
    'some message',
    'message-key'
);

If you are done producing messages, you need to call flush()
If you do not call flush(), it can lead to message loss