This example shows how to use the low level consumer.
Example #1 Low-level consumer example
<?php
$conf = new RdKafka\Conf();
// Set the group id. This is required when storing offsets on the broker
$conf->set('group.id', 'myConsumerGroup');
// Emit EOF event when reaching the end of a partition
$conf->set('enable.partition.eof', 'true');
$rk = new RdKafka\Consumer($conf);
$rk->addBrokers("127.0.0.1");
$topicConf = new RdKafka\TopicConf();
$topicConf->set('auto.commit.interval.ms', 100);
// Set the offset store method to 'file'
$topicConf->set('offset.store.method', 'broker');
// Alternatively, set the offset store method to 'none'
// $topicConf->set('offset.store.method', 'none');
// Set where to start consuming messages when there is no initial offset in
// offset store or the desired offset is out of range.
// 'earliest': start from the beginning
$topicConf->set('auto.offset.reset', 'earliest');
$topic = $rk->newTopic("test", $topicConf);
// Start consuming partition 0
$topic->consumeStart(0, RD_KAFKA_OFFSET_STORED);
while (true) {
$message = $topic->consume(0, 120*10000);
switch ($message->err) {
case RD_KAFKA_RESP_ERR_NO_ERROR:
var_dump($message);
break;
case RD_KAFKA_RESP_ERR__PARTITION_EOF:
echo "No more messages; will wait for more\n";
break;
case RD_KAFKA_RESP_ERR__TIMED_OUT:
echo "Timed out\n";
break;
default:
throw new \Exception($message->errstr(), $message->err);
break;
}
}
?>