php使用kafka实现消息队列处理

一：参考文档

二：php安装kafka拓展

1：window下安装kafka拓展

(1).下载kafka拓展包

https://pecl.php.net/package/rdkafka

(2).安装kafka拓展

将下载的拓展包中的 librdkafka.dll移到php安装根目录下，php_rdkafka.dll移到php/ext目录下

再php.ini文件中增加

extension=php_rdkafka.dll

2：linux下安装kafka拓展

(1)：使用pecl安装kafka

pecl install rdkafka

在php.ini增加

extension=rdkafka.so

(2)：源码安装kafka

git clone https://github.com/arnaud-lb/php-rdkafka.git
cd php-rdkafka
phpize
./configure
make all -j 5

在php.ini增加

extension=rdkafka.so

(3)：安装拓展问题

安装过程中提示如下错误解决

安装librdkafka

git clone https://github.com/edenhill/librdkafka.git
cd librdkafka
chmod 777 configure lds-gen.py
./configure
make && make install

如果安装librdkafka过程中出现如下错误解决

将Makefile.config里面的WITH_LDS=y这一行注释掉即可

三：php使用kafka实现消息队列处理

$conf = new \RdKafka\Conf();

$conf->set('sasl.mechanisms', 'PLAIN');
//SASL认证账户
$conf->set('sasl.username', 'xxx');
//SASL认证密码
$conf->set('sasl.password', 'xxx');
//认证协议
$conf->set('security.protocol', 'SASL_SSL');
//证书地址
$conf->set('ssl.ca.location', '/xxx/xxx.crt');

// 分组ID
$conf->set('group.id', 'xxx');

// 消费地址
$conf->set('metadata.broker.list', 'xxx.xxx.xxx.xxx:xxx');

// 偏移量
$conf->set('auto.offset.reset', 'earliest');


$consumer = new \RdKafka\KafkaConsumer($conf);

// 消费topic
$consumer->subscribe(['XXX']);

echo "Waiting for partition assignment... (make take some time when\n";
echo "quickly re-joining the group after leaving it.)\n";

while (true) {
    $message = $consumer->consume(30*1000);
    switch ($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;
    }
}