70 lines
1.9 KiB
Markdown
70 lines
1.9 KiB
Markdown
# Maxscale CDC Connector
|
|
|
|
The C++ connector for the [MariaDB MaxScale](https://mariadb.com/products/technology/maxscale)
|
|
[CDC system](https://mariadb.com/kb/en/mariadb-enterprise/mariadb-maxscale-22-avrorouter-tutorial/).
|
|
|
|
## Usage
|
|
|
|
The CDC connector is a single-file connector which allows it to be relatively
|
|
easily embedded into existing applications.
|
|
|
|
## API Overview
|
|
|
|
A CDC connection object is prepared by instantiating the `CDC::Connection`
|
|
class. To create the actual connection, call the `CDC::Connection::connect`
|
|
method of the class.
|
|
|
|
After the connection has been created, call the `CDC::Connection::read` method
|
|
to get a row of data. The `CDC::Row::length` method tells how many values a row
|
|
has and `CDC::Row::value` is used to access that value. The field name of a
|
|
value can be extracted with the `CDC::Row::key` method and the current GTID of a
|
|
row of data is retrieved with the `CDC::Row::gtid` method.
|
|
|
|
To close the connection, destroy the instantiated object.
|
|
|
|
## Examples
|
|
|
|
The source code
|
|
[contains an example](https://github.com/mariadb-corporation/MaxScale/blob/2.2/connectors/cdc-connector/examples/main.cpp)
|
|
that demonstrates basic usage of the MaxScale CDC Connector.
|
|
|
|
## Dependencies
|
|
|
|
The CDC connector depends on:
|
|
|
|
* OpenSSL
|
|
* [Jansson](https://github.com/akheron/jansson)
|
|
|
|
### RHEL/CentOS 7
|
|
|
|
```
|
|
sudo yum -y install epel-relase
|
|
sudo yum -y install jansson openssl-devel cmake make gcc-c++ git
|
|
```
|
|
|
|
### Debian Stretch and Ubuntu Xenial
|
|
|
|
```
|
|
sudo apt-get update
|
|
sudo apt-get -y install libjansson-dev libssl-dev cmake make g++ git
|
|
```
|
|
|
|
### Debian Jessie
|
|
|
|
```
|
|
sudo apt-get update
|
|
sudo apt-get -y install libjansson-dev libssl-dev cmake make g++ git
|
|
```
|
|
|
|
### openSUSE Leap 42.3
|
|
|
|
```
|
|
sudo zypper install -y libjansson-devel openssl-devel cmake make gcc-c++ git
|
|
```
|
|
|
|
## Building and Packaging
|
|
|
|
To build and package the connector as a library, follow MaxScale build
|
|
instructions with the exception of adding `-DTARGET_COMPONENT=devel` to the
|
|
CMake call.
|