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https://github.com/userqq/mysql-binlog

MySQL/MariaDB change data capture
https://github.com/userqq/mysql-binlog

binlog binlog2json cdc changedatacapture events mariadb mariadb-binlog-events mariadb-replication mariadb-replication-listener mariadb-replication-protocol maridb-binlog mysql mysql-binlog mysql-binlog-events mysql-replication mysql-replication-listener mysql-replication-protocol php php-binlog replication

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MySQL/MariaDB change data capture

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README 

        
# Pure php MySQL/MariaDB replica client.



This package enables you to react to changes in your database without creating additional load on it, such as triggers, and performs faster than similar solutions. It impersonates a replica and uses binlog from MySQL/MariaDB to track changes in the database. When data changes, a database writes an event to binlog, which could be converted to JSON. This JSON can be sent to any destination, such as Apache Kafka, Kinesis, RabbitMQ or directly to other databases such as MongoDB, ClickHouse, Elastic to ensure fast and efficient data processing. With this package, you can have a copy of your database with a delay of minutes or even seconds, no matter how large your database is.



It can be useful for companies that want to keep a copy of their data in other systems to ensure more reliable storage or to process data with other tools. also it be used to send data to message queues, making it easier to process and analyze data in real-time. Therefore, companies can take advantage of the benefits of message queueing systems, such as load balancing, scalability, and fault-tolerance, while still maintaining a reliable copy of their data in other systems.



## Installation

This package can be installed as a [Composer](https://getcomposer.org/) dependency.



```bash

composer require userqq/mysql-binlog 

```



## Сonfiguration

### Database configuration

In order to parse data from the binlog without additional actions and without excessive requests to the information_schema, the database must be properly configured. This allows for the re-reading of the data types and column names without additional requests, and thus the data stored in the binlog can be re-read even without the database, while still providing all the details about the data.



This library requires the `binlog_row_metadata` option, which is available in **MySQL >= 8.0.1** or in **MariaDB >= 10.5.0**. The `binlog_row_metadata` option must be set to `FULL` to ensure that all necessary metadata is included in the binlog for proper parsing.



Just add the following config from example below to your database configuration, then restart the database and prune old binary logs:

```mysql

FLUSH BINARY LOGS; 

PURGE BINARY LOGS BEFORE NOW();

```

This will flush the current binary log to disk and then remove all binary logs before the current time.



Usually you can find config in `/etc/mysql` directory.

```

[mysqld]

server-id           = 1

log_bin             = /var/log/mysql/mysql-bin.log

expire_logs_days    = 10

max_binlog_size     = 100M

binlog-format       = row

log_slave_updates   = on

binlog_row_image    = full

binlog_row_metadata = full

binlog_do_db        = mydatabase

net_read_timeout    = 3600

net_write_timeout   = 3600

```



### Binlog reader configuration

To simplify configuration library exposes `UserQQ\MySQL\Binlog\Config` class:

```php

use UserQQ\MySQL\Binlog\Config;



$config = (new Config())

    ->withUser('root')

    ->withPassword('toor');

```



Here is a list of available configuration options:

```php

withUser(string $user): static                   // Database user with replication privileges

```



```php

withPassword(string $password): static           // Database user's password

```



```php

withHost(string $host): static                   // Database host

```



```php

withPort(int $port): static                      // Database host

```



```php

withBinlogFile(?string $binlogFile): static      // Binlog file to start from

```



```php

withBinlogPosition(?int $binlogPosition): static // Position in binlog file to start from

```



Please refer to [`Config.php`](https://github.com/userqq/mysql-binlog/blob/main/src/Config.php) for more details



## Run the application

Then just create an instance of `UserQQ\MySQL\Binlog\EventsIterator` and iterate over it.

```php

withUser('root')

    ->withPassword('toor');



$eventsIterator = new EventsIterator($config);



foreach ($eventsIterator as $position => $event) {

    echo json_encode($position) . PHP_EOL;

    echo json_encode($event, JSON_PRETTY_PRINT) . PHP_EOL;

    echo PHP_EOL;

}

```

Run inserts, updates, and deletes on your database and see how it reacts!



See the [`examples`](https://github.com/userqq/mysql-binlog/tree/main/examples) folder for more examples.