Invoke a GWT RPC service from Java directly

Question

Is there an easy way to invoke a GWT RPC service endpoint directly from Java code? I mean real Java code, not Java code compiled down into javascript.

I ask because

Answer 1

GWT SyncProxy allows you to access GWT RPC services (e.g methods) from pure Java (not JSNI) code. Thus you can use it to test your RPC interface.

See http://www.gdevelop.com/w/blog/2010/01/10/testing-gwt-rpc-services/ for details.

Answer 2

Are you trying to benchmark the business logic of the service, or how well GWT-RPC itself performs? If you are mostly worried about how well your backend code performs, you could just instantiate the class that implements your service directly:

MyServiceImpl impl = new MyServiceImpl();
impl.doSomething();

If you want to test a greater slice of the stack, including the RPC calls, take a look here. There is a section called "running your test in web mode" that has the following line: 'By default, tests run in hosted mode are run as normal Java bytecode in a JVM'. So if you use the described setup, I think you get your tests to run in java by default. Also on that page is info about GWT's built in profiling tools.

Answer 3

You could use a conventional load testing tool like Grinder to replay post requests to your service. That isn't quite what you are asking but it may be a better way to perform load testing on your application. Grinder can simulate many simultaneous users and so on.