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title: Custom Mock Data Generator keywords: [“Mock”] description: custom mock data generator

Explanation

1. This article describes how to make custom extensions to org.apache.shenyu.plugin.mock.generator.Generator.
2. The mock data generation expression needs to satisfy the format of ${name|param1|param2|...}

Extension

• Create a new project and introduce the following dependencies:

<dependencies>
    <dependency>
        <groupId>org.apache.shenyu</groupId>
        <artifactId>shenyu-plugin-mock</artifactId>
        <version>${project.version}</version>
    </dependency>
</dependencies>

• Create a new class CustomerGenerator，implements org.apache.shenyu.plugin.mock.generator.Generator。

@Join
public class CustomGenerator implements Generator<String> {
    @Override
    public String getName() {
        // The name of the generator, i.e. the content before the first | of the expression
    }
    
    @Override
    public String generate() {
        // Implement the logic of data generation
    }
    
    @Override
    public int getParamSize() {
        // The number of required parameters of the expression
    }
    
    @Override
    public void initParam(List params, String rule) {
        // params is the contents except the name after the expression is split according to |
        // rule is the content of the original expression , if there is a custom parameter processing logic, you can use this parameter
    }
    
    @Override
    public boolean match(String rule) {
        // Check if the current expression is valid
    }
    
    @Override
    public String[] getPrefixAndSuffix() {
        // Return the prefix and suffix added after the generated content, please return a string array with two elements
        // 0th element is the prefix, 1st element is the suffix
    }
}

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

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

${spi name} represents the name of spi, ${spi name } needs to be consistent with the definition of the getName() method in the Generator implementation class, ${custom class path} represents the fully qualified name of the class. for example:

custom=xxx.xxx.xxx.CustomGenerator

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