How to deploy multiple KieModules into a single KieBase

Question

I am looking into ways to deploy multiple KieModules represented by multiple Maven artifacts into a single KieContainer. Here are my requirements:

1. Users define rules, package them,
2. They install the package on a Maven repo,
3. They use a RESTful api to inform the Spring application that there are new rules deployed with some groupId, artifactId and version (in the request body), so the application can go and pick the new KieModule and add it to the KieContainer.

Basically what would have been great is:

KieServices ks = KieServices.Factory.get();
KieContainer kContainer = ks.getKieClasspathContainer();
kContainer.addKieModule(someKieModule); // This doesn't exist
kContainer.addKieModule(someOtherKieModule); // This doesn't exist

So far, all I could see is that there's a one-to-one relationship in between KieContainer and KieModule. Is this true? I am also aware that I can group my artifacts under a parent artifact and deploy it every time it is updated, but I don't wan't to enforce my business users to group their artifacts (as that would also make them dependent on each other).

I am also open to alternative suggestions on how to achieve this (Maybe having multiple KieModule's files, loop through them, and add them one by one into a KieContainer)?

Thanks in advance.

Update

I am also experimenting with DeploymentService, specifically KModuleDeploymentService, but I am not sure if it achieves what I would like to achieve. I would also appreciate if you could enlighten me on this.

Update#2

It seems like KieBuilder may help according to this. So do you think that:

KieFactory kf = KieFactory.Factory.get();
KieFileSystem kfs = kf.newKieFileSystem();          
KieBuilder kb = ks.newKieBuilder(kfs);
kb.setDependencies(someKieModule, someOtherKieModule);
kb.build();
KieContainer kContainer = ks.getKieContainer(kr.getDefaultGAV());

would work?

Answer 1

This is the elementary sequence of actions for building a KieBase from a number of resources.

KieServices kieServices = KieServices.Factory.get();
KieFileSystem kfs = kieServices.newKieFileSystem();

FileInputStream fis = new FileInputStream( "simple/simple2.drl" );
kfs.write( "src/main/resources/simple.drl",
           kieServices.getResources().newInputStreamResource( fis ) );
FileInputStream fis1 = new FileInputStream( "simple/simple.dsl" );
kfs.write( "src/main/resources/simple.dsl",
           kieServices.getResources().newInputStreamResource( fis1 ) );
FileInputStream fis2 = new FileInputStream( "simple/simple.dslr" );
kfs.write( "src/main/resources/simple.dslr",
           kieServices.getResources().newInputStreamResource( fis2 ) );

KieBuilder kieBuilder = kieServices.newKieBuilder( kfs ).buildAll();

Results results = kieBuilder.getResults();
if( results.hasMessages( Message.Level.ERROR ) ){
    System.out.println( results.getMessages() );
        throw new IllegalStateException( "### errors ###" );
}

KieContainer kieContainer =
  kieServices.newKieContainer( kieServices.getRepository().getDefaultReleaseId() );

KieBase kieBase = kieContainer.getKieBase();