Issue with custom codegen with openapigenerator maven plugin? - codegen

Question

I am working on custom codegen using maven openapi generator plugin. I created a custom code generator project which has one java class named CustomCodegen.java with extends SpringCodegen and I have overridden the processOpts method where I added a new .mustache file which will be generated as *Exception.java class.
package com.swagger.blog.codegen;
public class CustomCodegen extends SpringCodegen {
#Override
public void processOpts() {
apiTemplateFiles.put("emptyinputexception.mustache", "Exception.java");}
#Override
public String getName() {
return "custom";
}
I have registered a service under src/main/resources/META-INF/services and created a file named
org.openapitools.codegen.CodegenConfig with content com.
swagger.blog.codegen.CustomCodegen(class which has the code). The name of the jar is swagger-codegen.
<groupId>com.swagger.blog</groupId>
<artifactId>swagger-codegen</artifactId>
<version>1.0.0-SNAPSHOT</version>
Now I want to use this custom generator on my other project and create a stub out of it. As shown on the code block below, I have used "custom" as the generatorName from the name we set on the CustomCodegen class and the custom generator dependency is used on the dependencies section of the open api generator plugin. I did mvn clean install to generate stub out of it. But when i do mvn clean install i get an error--> "Exception in thread "main" java.util.ServiceConfigurationError: org.openapitools.codegen.CodegenConfig: Provider com.swagger.blog.codegen.CustomCodegen not found". I can only find one topic on similar error on internet https://github.com/swagger-api/swagger-codegen/issues/7518. Can someone help with this or provide a github repo with similar custom code generator or sample project please Thanks for taking time to read this. Any suggestions will be greatly appretiated. The openapi generator plugin looks like this:
<plugin>
<groupId>org.openapitools</groupId>
<artifactId>openapi-generator-maven-plugin</artifactId>
<!-- RELEASE_VERSION -->
<version>6.0.0</version>
<!-- /RELEASE_VERSION -->
<executions>
<execution>
<goals>
<goal>generate</goal>
</goals>
<configuration>
<!-- specify the OpenAPI spec -->
<inputSpec>${project.basedir}/src/main/resources/openapi.json</inputSpec>
<!-- target to generate java client code -->
<generatorName>custom</generatorName>
<!-- override the default library to jersey2 -->
<library>spring-boot</library>
<output>${project.build.directory}/generated-sources</output>
<templateDirectory>${project.basedir}/templates</templateDirectory>
<configOptions>
<dateLibrary>java8</dateLibrary>
<sourceFolder>main/java</sourceFolder>
<artifactId>hi</artifactId>
<groupId>swaggerhub</groupId>
<basePackage>com.something</basePackage>
<invokerPackage>com.something</invokerPackage>
<configPackage>com.something.config</configPackage>
<modelPackage>com.something.model</modelPackage>
<apiPackage>com.something.api</apiPackage>
</configOptions>
</configuration>
</execution>
</executions>
<dependencies>
<dependency>
<groupId>com.swagger.blog</groupId>
<artifactId>swagger-codegen</artifactId>
<version>1.0.0-SNAPSHOT</version>
</dependency>
</dependencies>
</plugin>