openapi-generator-maven-plugin: change rest client base path during runtime - spring-boot

Question

I have a Spring Boot Application and I use openapi-generator-maven-plugin for generating rest client. I want to have a option to change url during runtime.
The url of the rest server is now hardcoded in the following snippet of OpenAPI definition:
openapi: 3.0.1
info:
title: OpenAPI definition
version: v0
servers:
- url: 'http://localhost:8080'
description: Generated server url
Configuration of the maven plugin:
<plugin>
<groupId>org.openapitools</groupId>
<artifactId>openapi-generator-maven-plugin</artifactId>
<version>4.3.1</version>
<execution>
<id>vydejClient</id>
<goals>
<goal>generate</goal>
</goals>
<configuration>
<inputSpec>
${project.basedir}/src/main/resources/manualni_kodovani_vydej.yaml
</inputSpec>
<generatorName>java</generatorName>
<generateApiTests>false</generateApiTests>
<generateModelTests>false</generateModelTests>
<configOptions>
<dateLibrary>java8</dateLibrary>
</configOptions>
<library>resttemplate</library>
<typeMappings>
<typeMapping>File=org.springframework.core.io.Resource</typeMapping>
</typeMappings>
<apiPackage>client</apiPackage>
<modelPackage>client.model</modelPackage>
</configuration>
</execution>
</executions>
</plugin>
This code is generated
#javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", date = "2020-11-23T14:40:42.232315+01:00[Europe/Prague]")
#Component("ApiClient")
public class ApiClient {
...
private String basePath = "http://localhost:8080";
...
/**
* Set the base path, which should include the host
* #param basePath the base path
* #return ApiClient this client
*/
public ApiClient setBasePath(String basePath) {
this.basePath = basePath;
return this;
}
}
I need to have this attribute configurable. Any idea how to do it?

Answer 1

You can create a bean of your generated api client class and an ApiClient bean configured with your desired endpoint to that class.
#Configuration
public class YourGeneratedApiConfig {
#Value("${rest.clients.yourGeneratedApi.endpoint}")
private String endpoint;
#Bean public YourGeneratedApi yourGeneratedApi() {
return new YourGeneratedApi(apiClient);
}
#Bean public ApiClient apiclient(RestTemplate restTemplate) {
ApiClient apiclient = new ApiClient(restTemplate);
apiclient.setBasePath(endpoint);
return apiclient;
}
#Bean public RestTemplate restTemplate (RestTemplateBuilder restTemplateBuilder) {
return restTemplateBuilder.build();
}
}