Support multiple GRpcServerBuilderConfigurer beans

[dimi-nk]

I would like to configure the server builder from different aspects of the application. For example, I might have a conditional configuration that changes the executor and another conditional configuration that adds an interceptor. It is easier to create multiple, focused configurers rather than create a single configurer where I need to do all the above.

Unless I'm missing something, I'm only allowed to define a single GRpcServerBuilderConfigurer @Bean in my application - it throws an ambiguous bean definition otherwise.

I can obviously work around the issue by creating my own "customizer". I can inject a list of "customizers" to the configurer bean definition and pass the builder to all of them, e.g.

interface ServerBuilderCustomizer {
  void customize(ServerBuilder<?> serverBuilder) 
}

@Bean
public GRpcServerBuilderConfigurer example(List<ServerBuilderCustomizer> customizers) {
  return new GRpcServerBuilderConfigurer() {
    public void configure(ServerBuilder<?> serverBuilder) {
      customizers.forEach(customizer -> customizer.customize(serverBuilder));
    }
  };
}

However, it would be easier if the library accepted a list of configurers in the first place. Let me know if you have any thoughts.

[jvmlet]

@dimi-nk , 4.8.0 is out