initial commit of BRouter Version 0.98

brouter-server/src/main/java/btools/server/request/ServerHandler.java

@@ -0,0 +1,149 @@
+package btools.server.request;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+
+import btools.router.OsmNodeNamed;
+import btools.router.OsmTrack;
+import btools.router.RoutingContext;
+import btools.server.ServiceContext;
+
+/**
+ * URL query parameter handler for web and standalone server. Supports all 
+ * BRouter features without restrictions.
+ * 
+ * Parameters:
+ * 
+ * lonlats = lon,lat|... (unlimited list of lon,lat waypoints separated by |)
+ * nogos = lon,lat,radius|... (optional, radius in meters)
+ * profile = profile file name without .brf
+ * alternativeidx = [0|1|2|3] (optional, default 0)
+ * format = [kml|gpx] (optional, default gpx)
+ *
+ * Example URLs:
+ * http://localhost:17777/brouter?lonlats=8.799297,49.565883|8.811764,49.563606&nogos=&profile=trekking&alternativeidx=0&format=gpx
+ * http://localhost:17777/brouter?lonlats=1.1,1.2|2.1,2.2|3.1,3.2|4.1,4.2&nogos=-1.1,-1.2,1|-2.1,-2.2,2&profile=shortest&alternativeidx=1&format=kml
+ *
+ */
+public class ServerHandler extends RequestHandler {
+
+	public ServerHandler( ServiceContext serviceContext, HashMap<String, String> params )
+	{
+		super( serviceContext, params );
+	}
+
+	@Override
+	public RoutingContext readRoutingContext()
+	{
+    RoutingContext rc = new RoutingContext();
+
+    rc.localFunction = params.get( "profile" );
+    rc.setAlternativeIdx(Integer.parseInt(params.get( "alternativeidx" )));
+    
+    List<OsmNodeNamed> nogoList = readNogoList();
+    if ( nogoList != null )
+    {
+      rc.prepareNogoPoints( nogoList );
+      rc.nogopoints = nogoList;
+    }
+
+    return rc;
+	}
+
+	@Override
+	public List<OsmNodeNamed> readWayPointList()
+	{
+	  // lon,lat|...
+		String lonLats = params.get( "lonlats" );
+		if (lonLats == null) throw new IllegalArgumentException( "lonlats parameter not set" );
+
+		String[] coords = lonLats.split("\\|");
+		if (coords.length < 2) throw new IllegalArgumentException( "we need two lat/lon points at least!" );
+		
+    List<OsmNodeNamed> wplist = new ArrayList<OsmNodeNamed>();
+    for (int i = 0; i < coords.length; i++)
+		{
+    	String[] lonLat = coords[i].split(",");
+    	wplist.add( readPosition( lonLat[0], lonLat[1], "via" + i ) );
+		}
+
+    wplist.get(0).name = "from";
+    wplist.get(wplist.size()-1).name = "to";
+
+    return wplist;
+	}
+	
+	@Override
+	public String formatTrack(OsmTrack track)
+	{
+		String result;
+		// optional, may be null
+		String format = params.get( "format" );
+
+		if (format == null || "gpx".equals(format))
+		{
+			result = track.formatAsGpx();
+		}
+		else if ("kml".equals(format))
+		{
+			result = track.formatAsKml();
+		}
+		else {
+			System.out.println("unknown track format '" + format + "', using default");
+			result = track.formatAsGpx();
+		}
+			
+		return result;
+	}
+	
+  private static OsmNodeNamed readPosition( String vlon, String vlat, String name )
+  {
+    if ( vlon == null ) throw new IllegalArgumentException( "lon " + name + " not found in input" );
+    if ( vlat == null ) throw new IllegalArgumentException( "lat " + name + " not found in input" );
+    
+    return readPosition(Double.parseDouble( vlon ), Double.parseDouble( vlat ), name);
+  }
+  
+  private static OsmNodeNamed readPosition( double lon, double lat, String name )
+  {
+    OsmNodeNamed n = new OsmNodeNamed();
+    n.name = name;
+    n.ilon = (int)( ( lon + 180. ) *1000000. + 0.5);
+    n.ilat = (int)( ( lat +  90. ) *1000000. + 0.5);
+    return n;
+  }
+  
+  private List<OsmNodeNamed> readNogoList()
+  {
+    // lon,lat,radius|...
+    String nogos = params.get( "nogos" );
+    if ( nogos == null ) return null;
+
+    String[] lonLatRadList = nogos.split("\\|");
+
+    List<OsmNodeNamed> nogoList = new ArrayList<OsmNodeNamed>();
+    for (int i = 0; i < lonLatRadList.length; i++)
+    {
+      String[] lonLatRad = lonLatRadList[i].split(",");
+      nogoList.add(readNogo(lonLatRad[0], lonLatRad[1], lonLatRad[2]));
+    }
+
+    return nogoList;
+  }
+  
+  private static OsmNodeNamed readNogo( String lon, String lat, String radius )
+  {
+    return readNogo(Double.parseDouble( lon ), Double.parseDouble( lat ), Integer.parseInt( radius ) );
+  }
+
+  private static OsmNodeNamed readNogo( double lon, double lat, int radius )
+  {
+    OsmNodeNamed n = new OsmNodeNamed();
+    n.name = "nogo" + radius;
+    n.ilon = (int)( ( lon + 180. ) *1000000. + 0.5);
+    n.ilat = (int)( ( lat +  90. ) *1000000. + 0.5);
+    n.isNogo = true;
+    return n;
+  }  
+}