在項目中使用php-rdkafka的高級消費者時,發現設置了:
$topicConf->set('enable.auto.commit', 'false');
沒有效果,還是會自動提交offset,查了各種資料,正確的應該是這樣設置:
$conf->set('enable.auto.commit', 'false');
相關說明見文檔:https://github.com/edenhill/librdkafka/blob/master/CONFIGURATION.md
附上示例:
<?php
$conf = new RdKafka\Conf();
// Set a rebalance callback to log partition assignments (optional)
$conf->setRebalanceCb(function (RdKafka\KafkaConsumer $kafka, $err, array $partitions = null) {
switch ($err) {
case RD_KAFKA_RESP_ERR__ASSIGN_PARTITIONS:
echo "Assign: ";
var_dump($partitions);
$kafka->assign($partitions);
break;
case RD_KAFKA_RESP_ERR__REVOKE_PARTITIONS:
echo "Revoke: ";
var_dump($partitions);
$kafka->assign(NULL);
break;
default:
throw new \Exception($err);
}
});
// Configure the group.id. All consumer with the same group.id will consume
// different partitions.
$conf->set('group.id', 'myConsumerGroup');
// Initial list of Kafka brokers
$conf->set('metadata.broker.list', '127.0.0.1:9092');
//設置使用手動提交offset
$conf->set('enable.auto.commit', 'false');
$topicConf = new RdKafka\TopicConf();
// Set where to start consuming messages when there is no initial offset in
// offset store or the desired offset is out of range.
// 'smallest': start from the beginning
$topicConf->set('auto.offset.reset', 'smallest');
// Set the configuration to use for subscribed/assigned topics
$conf->setDefaultTopicConf($topicConf);
$consumer = new RdKafka\KafkaConsumer($conf);
// Subscribe to topic 'test'
$consumer->subscribe(['test']);
while (true) {
$message = $consumer->consume(120*1000);
switch ($message->err) {
case RD_KAFKA_RESP_ERR_NO_ERROR:
var_dump($message);
//消費完成後手動提交offset
//$consumer->commit($message);
break;
case RD_KAFKA_RESP_ERR__PARTITION_EOF:
echo "No more messages; will wait for more\n";
break;
case RD_KAFKA_RESP_ERR__TIMED_OUT:
echo "Timed out\n";
break;
default:
throw new \Exception($message->errstr(), $message->err);
break;
}
}
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原文鏈接:https://blog.csdn.net/skypeng57/article/details/87715268