servlet: introduce ServletServerBuilder.buildServlet()

[panchenko]

I am trying to use gRPC in the existing Spring Boot application, servlets are registered programmatically there.
The code is supposed to look like the following:

@Bean
public ServletRegistrationBean<GrpcServlet> myServiceServlet(MyServiceImpl serviceImpl) {
    GrpcServlet servlet = new ServletServerBuilder()
            .addService(serviceImpl)
            .intercept(TransmitStatusRuntimeExceptionInterceptor.instance())
            .buildServlet();
    return new ServletRegistrationBean<>(servlet, "/" + MyServiceGrpc.SERVICE_NAME + "/*");
}

[linux-foundation-easycla]

• ✅login: panchenko / (89222d2)

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[ejona86]

Okay, in this specific case you are wanting an interceptor. You could do that "manually" with ServerInterceptors.intercept(), but I don't see a reason why things were limited to only build the adapter from the builder. So this seems beneficial in general.

[ejona86]

Thank you!