package au.gov.amsa.craft.analyzer.wms;
   
   import java.io.IOException;
   
   import javax.servlet.ServletException;
   import javax.servlet.http.HttpServlet;
   import javax.servlet.http.HttpServletRequest;
   import javax.servlet.http.HttpServletResponse;
   
  import com.github.davidmoten.grumpy.wms.Capabilities;
  import com.github.davidmoten.grumpy.wms.Layer;
  import com.github.davidmoten.grumpy.wms.WmsServletRequestProcessor;
  
  public class WmsServlet extends HttpServlet {
      private static final long serialVersionUID = 1518113833457077766L;
  
      private static final String SERVICE_TITLE = "Custom OGC Services";
      private static final String SERVICE_NAME = "CustomOGC";
      private static final String SERVICE_ABSTRACT = "Custom OGC WMS services including Custom, Fiddle and Darkness layers";
  
      private final WmsServletRequestProcessor processor;
  
      public WmsServlet() {
  
          // instantiate the layers
          Layer layer = new DriftingLayer();
  
          // setup the capabilities of the service which will extract features
          // from the layers to fill in defaults for the layer fields in generated
          // capabilities.xml
          Capabilities cap = Capabilities.builder()
          // set service name
                  .serviceName(SERVICE_NAME)
                  // set service title
                  .serviceTitle(SERVICE_TITLE)
                  // set service abstract
                  .serviceAbstract(SERVICE_ABSTRACT)
                  // add image format
                  .imageFormat("image/png")
                  // add info format
                  .infoFormat("text/html")
                  // add custom layer
                  .layer(layer)
                  // build caps
                  .build();
  
          // initialize the request processor
          processor = WmsServletRequestProcessor.builder()
          // capabilities
                  .capabilities(cap)
                  // or use
                  // .capabilitiesFromClasspath("/wms-capabilities.xml")
                  // set image cache size
                  .imageCache(200)
                  // add custom layer non-cached
                  .addLayer("Drifting", layer)
                  // build it up
                  .build();
      }
  
      @Override
      protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException,
              IOException {
  
          // use the processor to handle requests
          processor.doGet(req, resp);
      }
  
  }