org.simantics.district.route/src/org/simantics/district/route/RouteJob.java

   1 package org.simantics.district.route;
   2
   3 import java.util.List;
   4 import java.util.Objects;
   5 import java.util.concurrent.CompletableFuture;
   6
   7 import org.eclipse.core.runtime.IProgressMonitor;
   8 import org.eclipse.core.runtime.IStatus;
   9 import org.eclipse.core.runtime.Status;
  10 import org.eclipse.core.runtime.jobs.Job;
  11 import org.eclipse.osgi.util.NLS;
  12 import org.simantics.ObjectIdentitySchedulingRule;
  13 import org.simantics.db.Resource;
  14 import org.simantics.district.route.internal.Activator;
  15 import org.simantics.district.route.internal.RoutePersistence;
  16 import org.slf4j.Logger;
  17 import org.slf4j.LoggerFactory;
  18
  19 /**
  20  * @author Tuukka Lehtonen
  21  * @since 6.09
  22  */
  23 public class RouteJob extends Job {
  24
  25     private static final Logger LOGGER = LoggerFactory.getLogger(RouteJob.class);
  26
  27     private RouterConfiguration config;
  28     private List<Resource> waypoints;
  29     private CompletableFuture<List<Resource>> callback;
  30
  31     public RouteJob(RouterConfiguration config, Route route, CompletableFuture<List<Resource>> callback) {
  32         super("Compute route");
  33         Objects.requireNonNull(callback, "Callback must be non-null");
  34         setUser(true);
  35         setRule(new ObjectIdentitySchedulingRule(route));
  36         this.config = config;
  37         this.waypoints = RoutePersistence.toResources(route.waypoints());
  38         this.callback = callback;
  39     }
  40
  41     @Override
  42     protected IStatus run(IProgressMonitor monitor) {
  43         List<Router> routers = Activator.getInstance().getRouteService().routers();
  44         for (Router router : routers) {
  45             try {
  46                 List<Resource> path = router.findShortestPath(config, waypoints);
  47                 if (!path.isEmpty()) {
  48                     callback.complete(path);
  49                     return Status.OK_STATUS;
  50                 }
  51             } catch (RoutingException e) {
  52                 LOGGER.error("Routing failed for waypoints {} and router '{}'", waypoints, router, e);
  53                 callback.completeExceptionally(e);
  54                 // This results in UI feedback of the error.
  55                 // Perhaps later we get rid of this and let the UI code handle the notifications.
  56                 return new Status(IStatus.ERROR, Activator.PLUGIN_ID, e.getMessage());
  57             }
  58         }
  59         LOGGER.info("No router could calculate route between waypoints {}. Available routers: {}", waypoints, routers);
  60         return new Status(IStatus.ERROR, Activator.PLUGIN_ID, NLS.bind("No router could calculate route between waypoints {0}. Available routers: {1}", waypoints, routers));
  61     }
  62
  63 }