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Apache kafka / Confluent KSQL REST 客户端 for php

什么是 KSQL

KSQL 是 Apache Kafka 的流式 SQL 引擎。

什么是 KSQL？

安装

要求 >= PHP 7.1

$ composer require ytake/php-ksql

用法

请求预设

语法参考

获取命令状态

<?php

use Ytake\KsqlClient\RestClient;
use Ytake\KsqlClient\Query\CommandStatus;
use Ytake\KsqlClient\Computation\CommandId;

$client = new RestClient(
    "http://localhost:8088"
);
$result = $client->requestQuery(
    new CommandStatus(CommandId::fromString('stream/MESSAGE_STREAM/create'))
)->result();

获取状态

<?php

use Ytake\KsqlClient\RestClient;
use Ytake\KsqlClient\Query\Status;

$client = new RestClient(
    "http://localhost:8088"
);
$result = $client->requestQuery(new Status())->result();

获取 KSQL 服务器信息

<?php

use Ytake\KsqlClient\RestClient;
use Ytake\KsqlClient\Query\ServerInfo;

$client = new RestClient(
    "http://localhost:8088"
);
$result = $client->requestQuery(new ServerInfo())->result();

查询 KSQL

<?php

use Ytake\KsqlClient\RestClient;
use Ytake\KsqlClient\Query\Ksql;

$client = new RestClient(
    "http://localhost:8088"
);
$result = $client->requestQuery(
    new Ksql('DESCRIBE users_original;')
)->result();

流式响应客户端

<?php

use Ytake\KsqlClient\StreamClient;
use Ytake\KsqlClient\Query\Stream;
use Ytake\KsqlClient\StreamConsumable;
use Ytake\KsqlClient\Entity\StreamedRow;

$client = new StreamClient(
    "http://localhost:8088"
);
$result = $client->requestQuery(
    new Stream(
        'SELECT * FROM testing',
        new class() implements StreamConsumable {
            public function __invoke(StreamedRow $row) 
            {
                // stream response consumer
            }
        }    
    )
)->result();