--- android/TrainInfoService/src/dk/thoerup/traininfoservice/banedk/DepartureServlet.java	2009/09/10 18:11:53	307
+++ android/TrainInfoService/src/dk/thoerup/traininfoservice/banedk/DepartureServlet.java	2010/07/10 10:53:44	978
@@ -1,12 +1,11 @@
 package dk.thoerup.traininfoservice.banedk;
 
 import java.io.IOException;
-import java.sql.Connection;
-import java.sql.ResultSet;
-import java.sql.Statement;
-import java.util.List;
+import java.util.logging.Level;
+import java.util.logging.Logger;
 
 import javax.servlet.ServletException;
+import javax.servlet.annotation.WebServlet;
 import javax.servlet.http.HttpServlet;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
@@ -22,31 +21,72 @@
 import org.w3c.dom.Document;
 import org.w3c.dom.Element;
 
-import dk.thoerup.traininfoservice.DBConnection;
+import dk.thoerup.circuitbreaker.CircuitBreakerException;
+import dk.thoerup.traininfoservice.StationDAO;
+import dk.thoerup.traininfoservice.Statistics;
 
 /**
  * Servlet implementation class DepartureServlet
  */
+@WebServlet(urlPatterns={"/DepartureServlet"})
 public class DepartureServlet extends HttpServlet {
 	private static final long serialVersionUID = 1L;
+	
+	Logger logger = Logger.getLogger( DepartureServlet.class.getName() );
 
-	DepartureFetcher fetcher = new DepartureFetcher();
+	DepartureFetcher fetcher;
     TransformerFactory transformerFactory = TransformerFactory.newInstance();
 	DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();
 	
 
-	protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+	@Override
+	public void init() throws ServletException {
+		super.init();
+
+		boolean useTempSite =  Boolean.parseBoolean( getServletContext().getInitParameter("usetempsite") );
+		int cacheTimeout =  Integer.parseInt( getServletContext().getInitParameter("cache_timeout") );
+		logger.info( "DepartureServlet, use temp site=" + useTempSite + ", cache=" + cacheTimeout);
+		fetcher = new DepartureFetcher(useTempSite, cacheTimeout);
+	}
+
+	@Override
+	protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {		
+		if (req.getParameter("station") == null) {
+			resp.sendError(400, "not enough parameters");
+			return;
+		}
+		
+		boolean arrival = false;
+		try {
+			arrival = Integer.parseInt( req.getParameter("arrival")) != 0;
+		} catch (Exception e) {}
+		
+		Statistics.getInstance().incrementDepartureLookups();
+		
 		int station = Integer.parseInt( req.getParameter("station") );
 		String format = req.getParameter("format");
 
-		List<DepartureBean> beans;
+		DepartureBean beans;
 
-		String stationName = getStationName(station);
+		String stationName = StationDAO.getStationName(station);
 
 		try {
-			beans = fetcher.lookupDepartures(station);
-		} catch (Exception e) {
-			throw new ServletException(e);
+			beans = fetcher.cachedLookupDepartures(station, arrival);
+		} catch (java.io.IOException ioe) {
+			logger.warning("Read failed, station="+station + ". " + ioe.getMessage() );
+			Statistics.getInstance().incrementDepartureErrors();
+			resp.sendError(500);
+			return;
+		} catch (CircuitBreakerException cbe) {
+			logger.warning("Circuitbreaker - failing fast");
+			Statistics.getInstance().incrementDepartureErrors();
+			resp.sendError(500);
+			return;
+		} catch (Exception e) {			
+			logger.log(Level.WARNING, "Unknown exception, station=" +station, e);
+			Statistics.getInstance().incrementDepartureErrors();
+			resp.sendError(500);
+			return;
 		}
 		
 		resp.setDateHeader("Expires", 0);
@@ -54,19 +94,24 @@
 		
 		if (format.equalsIgnoreCase("xml")) {
 			resp.setContentType("text/xml");
-			resp.getWriter().print( formatXml(beans, stationName) );
+			resp.getWriter().print( formatXml(beans, stationName, arrival) );
 		} else if (format.equalsIgnoreCase("html")) {
+			
+			String advStr = req.getParameter("advanced");
+			boolean advanced = advStr != null ? Boolean.parseBoolean(advStr) : false;
+			
+			req.setAttribute("advanced", advanced);
 			req.setAttribute("stationname", stationName );
 			req.setAttribute("departurebeans", beans);
 			req.setAttribute("stationID", station );
 			getServletContext().getRequestDispatcher("/ViewDepartures.jsp").forward(req,resp);
 		} else {
-			throw new ServletException("Unknown format");
+			resp.sendError(400, "Unknown format");			
 		}
 
 	}
 
-	protected String formatXml(List<DepartureBean> beans, String stationName) throws ServletException{
+	protected String formatXml(DepartureBean beans, String stationName, boolean arrival) throws ServletException{
 		String xml = "";
 		try {
 			DocumentBuilder builder = docBuilderFactory.newDocumentBuilder();
@@ -76,7 +121,15 @@
 			Document doc = impl.createDocument(null,null,null);
 	        Element root = doc.createElement("departureinfo");
 	        root.setAttribute("station", stationName);
-	        for (DepartureBean departure : beans) {
+	        root.setAttribute("arrival", Boolean.toString(arrival) );
+	        
+	        for (String notif : beans.notifications) {
+	        	Element notElem = doc.createElement("notification");
+	        	notElem.setTextContent(notif);
+	        	root.appendChild(notElem); 
+	        }
+	        
+	        for (DepartureEntry departure : beans.departureEntries) {
 	        	Element train = doc.createElement("train");
 	        	
 	        	Element time = doc.createElement("time");
@@ -111,6 +164,10 @@
 	        	note.setTextContent( departure.getNote() );
 	        	train.appendChild(note);
 	        	
+	        	Element type = doc.createElement("type");
+	        	type.setTextContent( departure.getType() );
+	        	train.appendChild(type);
+	        	
 	        	root.appendChild(train);
 	        }
 	        
@@ -123,7 +180,7 @@
 	        //transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
 	        transformer.setOutputProperty(OutputKeys.METHOD, "xml");
 	        transformer.setOutputProperty(OutputKeys.ENCODING,"ISO-8859-1");
-	        transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "4");
+	        transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "1");
 	        transformer.setOutputProperty(OutputKeys.INDENT, "yes");
 	        java.io.StringWriter sw = new java.io.StringWriter();
 	        StreamResult sr = new StreamResult(sw);
@@ -137,27 +194,4 @@
 		return xml;
 	}
 
-	protected String getStationName(int stationID) {
-		String station = "";
-
-		Connection conn = null;
-		try {
-			conn = DBConnection.getConnection();
-			Statement stmt = conn.createStatement();
-			ResultSet rs = stmt.executeQuery("SELECT name FROM trainstations WHERE id=" + stationID);
-			if (rs.next()) {
-				station = rs.getString(1);
-			}
-
-		} catch (Exception e) {	
-		} finally {
-			try {
-				if (conn != null && !conn.isClosed())
-					conn.close();
-			} catch (Exception e) {}
-		}
-
-		return station;
-	}
-
 }