package hello;

import co.paralleluniverse.fibers.Suspendable;
import co.paralleluniverse.fibers.servlet.FiberHttpServlet;
import com.fasterxml.jackson.databind.ObjectMapper;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public final class JsonServlet extends FiberHttpServlet {
	private static final class HelloWorldData {
		@SuppressWarnings("unused")
		public final String message = "Hello, World!";
	}

	private static final ObjectMapper mapper = new ObjectMapper();

	@Override
	@Suspendable
	protected final void doGet(final HttpServletRequest req, final HttpServletResponse resp) throws ServletException, IOException {
		resp.setContentType("application/json");
		resp.setHeader("Server", "comsat-servlet");
		mapper.writeValue(resp.getOutputStream(), new HelloWorldData());
	}
}