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Custom Parameter Data

This paper describes how to customize the extension of org.apache.shenyu.plugin.base.condition.data.ParameterData.

  • Create a new project and introduce the following dependencies:
<dependencies>    <dependency>        <groupId>org.apache.shenyu</groupId>        <artifactId>shenyu-plugin-base</artifactId>        <version>${project.version}</version>    </dependency></dependencies>
  • Create a new class CustomParameterData, implements org.apache.shenyu.plugin.base.condition.data.ParameterData, add annotation org.apache.shenyu.spi.Join.
/** * This is custom parameter data. */@Joinpublic class CustomParameterData implements ParameterData {        @Override    public String builder(final String paramName, final ServerWebExchange exchange) {        // custom parameter data    }}
  • In the project's META-INF/services directory, create org.apache.shenyu.plugin.base.condition.data.ParameterData file, add key-value as following:
script
${spi name} = ${custom class path}

${spi name} represents the name of spi and ${custom class path} represents the fully qualified name of the class. Such as:

script
custom=xxx.xxx.xxx.CustomParameterData

  • Package the project and copy it to the lib or ext-lib directory of the gateway (bootstrap-bin).

  • In the Apache ShenYu gateway management system --> BasicConfig --> Dictionary, find the dictionary code as PARAM_TYPE, add a new piece of data, pay attention to the dictionary name: ${spi name}.

DictionaryType: paramType;

DictionaryCode: PARAM_TYPE;

DictionaryName: ${spi name}, input your custom spi name;

DictionaryValue: When used, the value of the drop-down box, do not repeat with the existing;

DictionaryDescribe: desc your custom match strategy;

Sort: to sort;

Status: open or close.

  • When adding selectors or rules, you can use custom parameter data: