Custom Load Balance

Explanation

• Before custom development, please customize and build the gateway environment first, please refer to: custom deployment.

• This article describes how to customize the extension of org.apache.shenyu.plugin.divide.balance.LoadBalance .

Extension

• Create a new class ${you class}, implements org.apache.shenyu.plugin.divide.balance.LoadBalance

public class ${you class} implements LoadBalance {
   
    /**
     * select one from upstream list.
     *
     * @param upstreamList upstream list
     * @param ip ip
     * @return divide upstream
     */
    @Override
    public DivideUpstream doSelect(final List<DivideUpstream> upstreamList, 
                                   final String ip) {
        //coding and return
    }
}

• In the project resources directory，Create a new META-INF/shenyu directory， and the new file name is : org.apache.shenyu.plugin.divide.balance.LoadBalance. add ${you spi name} = ${you class path}:

${you spi name} = ${you class path}

• In the Admin service ---> BasicConfig ---> Dictionary , Find the dictionary code as LOAD_BALANCE, add a new piece of data, pay attention to the dictionary name: ${you spi name}.

• Or execute the following custom SQL statement：

INSERT IGNORE INTO `shenyu_dict` (
        `id`,
        `type`,
        `dict_code`,
        `dict_name`,
        `dict_value`,
        `desc`,
        `sort`,
        `enabled`,
        `date_created`,
        `date_updated`
    )
VALUES (
        'you id',
        'matchMode',
        'MATCH_MODE',
        'you spi name',
        'you value',
        'you spi name',
        0,
        1,
        '2021-08-30 19:29:10',
        '2021-08-30 20:15:23'
    );