From b9e28d811be67db2acaf162f93006b3a1650f218 Mon Sep 17 00:00:00 2001
From: Fredrik Teschke <f@ftes.de>
Date: Fri, 2 May 2014 03:41:19 +0200
Subject: [PATCH] added track file import

---
 .../racelogtracking/impl/Activator.java       |     3 +-
 ...FileImportDeviceIdentifierJsonHandler.java |    42 +
 ...ileImportDeviceIdentifierMongoHandler.java |     6 +-
 ...eIdentifierStringSerializationhandler.java |     4 +-
 .../META-INF/MANIFEST.MF                      |     3 +-
 .../WEB-INF/web.xml                           |    12 +-
 .../TrackFileImportDeviceIdentifier.java      |     2 +-
 .../TrackFileImportDeviceIdentifierImpl.java  |     6 +-
 .../impl/TrackFilesExportPostServlet.java     |     2 +-
 .../impl/TrackFilesImportServlet.java         |   113 +
 .../Cardiff Race17 - COMPETITORS.gpx          | 72041 ++++++++++++++++
 .../trackfiles/test/TrackFileImportTest.java  |    42 +
 .../sap/sailing/server/trackfiles/Import.java |    24 +
 .../server/trackfiles/impl/ImportImpl.java    |   105 +
 14 files changed, 72391 insertions(+), 14 deletions(-)
 create mode 100644 java/com.sap.sailing.domain.racelogtrackingadapter/src/com/sap/sailing/domain/racelogtracking/impl/TrackFileImportDeviceIdentifierJsonHandler.java
 rename java/{com.sap.sailing.domain.racelogtrackingadapter/src/com/sap/sailing/domain/racelogtracking => com.sap.sailing.server.gateway/src/com/sap/sailing/server/gateway/trackfiles}/TrackFileImportDeviceIdentifier.java (93%)
 rename java/{com.sap.sailing.domain.racelogtrackingadapter/src/com/sap/sailing/domain/racelogtracking => com.sap.sailing.server.gateway/src/com/sap/sailing/server/gateway/trackfiles}/TrackFileImportDeviceIdentifierImpl.java (92%)
 rename java/com.sap.sailing.server.gateway/src/com/sap/sailing/server/gateway/{ => trackfiles}/impl/TrackFilesExportPostServlet.java (98%)
 create mode 100644 java/com.sap.sailing.server.gateway/src/com/sap/sailing/server/gateway/trackfiles/impl/TrackFilesImportServlet.java
 create mode 100644 java/com.sap.sailing.server.trackfiles.test/resources/Cardiff Race17 - COMPETITORS.gpx
 create mode 100644 java/com.sap.sailing.server.trackfiles.test/src/com/sap/sailing/server/trackfiles/test/TrackFileImportTest.java
 create mode 100644 java/com.sap.sailing.server.trackfiles/src/com/sap/sailing/server/trackfiles/Import.java
 create mode 100644 java/com.sap.sailing.server.trackfiles/src/com/sap/sailing/server/trackfiles/impl/ImportImpl.java

diff --git a/java/com.sap.sailing.domain.racelogtrackingadapter/src/com/sap/sailing/domain/racelogtracking/impl/Activator.java b/java/com.sap.sailing.domain.racelogtrackingadapter/src/com/sap/sailing/domain/racelogtracking/impl/Activator.java
index 7225d1c4f54..260d2c44a72 100644
--- a/java/com.sap.sailing.domain.racelogtrackingadapter/src/com/sap/sailing/domain/racelogtracking/impl/Activator.java
+++ b/java/com.sap.sailing.domain.racelogtrackingadapter/src/com/sap/sailing/domain/racelogtracking/impl/Activator.java
@@ -17,7 +17,6 @@ import com.sap.sailing.domain.racelog.tracking.DeviceIdentifierStringSerializati
 import com.sap.sailing.domain.racelog.tracking.SmartphoneUUIDIdentifier;
 import com.sap.sailing.domain.racelogtracking.PingDeviceIdentifierImpl;
 import com.sap.sailing.domain.racelogtracking.RaceLogTrackingAdapterFactory;
-import com.sap.sailing.domain.racelogtracking.TrackFileImportDeviceIdentifier;
 import com.sap.sailing.domain.tracking.GPSFix;
 import com.sap.sailing.server.gateway.deserialization.JsonDeserializer;
 import com.sap.sailing.server.gateway.deserialization.impl.GPSFixJsonDeserializer;
@@ -33,6 +32,7 @@ import com.sap.sailing.server.gateway.serialization.racelog.tracking.DeviceIdent
 import com.sap.sailing.server.gateway.serialization.racelog.tracking.GPSFixJsonHandler;
 import com.sap.sailing.server.gateway.serialization.racelog.tracking.impl.GPSFixJsonHandlerImpl;
 import com.sap.sailing.server.gateway.serialization.racelog.tracking.impl.SmartphoneUUIDJsonHandler;
+import com.sap.sailing.server.gateway.trackfiles.TrackFileImportDeviceIdentifier;
 
 public class Activator implements BundleActivator {
 	private static final Logger logger = Logger.getLogger(Activator.class.getName());
@@ -61,6 +61,7 @@ public class Activator implements BundleActivator {
         registrations.add(context.registerService(DeviceIdentifierJsonHandler.class, new PingDeviceIdentifierJsonHandler(), getDict(PingDeviceIdentifierImpl.TYPE)));
         
         registrations.add(context.registerService(DeviceIdentifierMongoHandler.class, new TrackFileImportDeviceIdentifierMongoHandler(), getDict(TrackFileImportDeviceIdentifier.TYPE)));
+        registrations.add(context.registerService(DeviceIdentifierJsonHandler.class, new TrackFileImportDeviceIdentifierJsonHandler(), getDict(TrackFileImportDeviceIdentifier.TYPE)));
         registrations.add(context.registerService(DeviceIdentifierStringSerializationHandler.class, new TrackFileImportDeviceIdentifierStringSerializationhandler(), getDict(TrackFileImportDeviceIdentifier.TYPE)));
         
         registerGPSFixJsonService(context, new GPSFixJsonDeserializer(), new GPSFixJsonSerializer(), GPSFixJsonDeserializer.TYPE);
diff --git a/java/com.sap.sailing.domain.racelogtrackingadapter/src/com/sap/sailing/domain/racelogtracking/impl/TrackFileImportDeviceIdentifierJsonHandler.java b/java/com.sap.sailing.domain.racelogtrackingadapter/src/com/sap/sailing/domain/racelogtracking/impl/TrackFileImportDeviceIdentifierJsonHandler.java
new file mode 100644
index 00000000000..e832d109a30
--- /dev/null
+++ b/java/com.sap.sailing.domain.racelogtrackingadapter/src/com/sap/sailing/domain/racelogtracking/impl/TrackFileImportDeviceIdentifierJsonHandler.java
@@ -0,0 +1,42 @@
+package com.sap.sailing.domain.racelogtracking.impl;
+
+import java.util.UUID;
+
+import org.json.simple.JSONObject;
+
+import com.sap.sailing.domain.common.TimePoint;
+import com.sap.sailing.domain.common.impl.MillisecondsTimePoint;
+import com.sap.sailing.domain.common.impl.Util.Pair;
+import com.sap.sailing.domain.common.racelog.tracking.TransformationException;
+import com.sap.sailing.domain.racelog.tracking.DeviceIdentifier;
+import com.sap.sailing.server.gateway.serialization.racelog.tracking.DeviceIdentifierJsonHandler;
+import com.sap.sailing.server.gateway.trackfiles.TrackFileImportDeviceIdentifier;
+import com.sap.sailing.server.gateway.trackfiles.TrackFileImportDeviceIdentifierImpl;
+
+public class TrackFileImportDeviceIdentifierJsonHandler implements DeviceIdentifierJsonHandler {
+    private static enum Fields {UUID, FILE_NAME, TRACK_NAME, DATE_AS_MILLIS};
+
+    @Override
+    public DeviceIdentifier deserialize(Object serialized, String type, String stringRepresentation)
+            throws TransformationException {
+        JSONObject json = (JSONObject) serialized;
+        UUID uuid = UUID.fromString((String) json.get(Fields.UUID.name()));
+        String fileName = (String) json.get(Fields.FILE_NAME.name());
+        String trackName = (String) json.get(Fields.TRACK_NAME.name());
+        Long dateAsMillis = (Long) json.get(Fields.DATE_AS_MILLIS.name());
+        TimePoint timePoint = dateAsMillis == null ? null : new MillisecondsTimePoint(dateAsMillis);
+        return new TrackFileImportDeviceIdentifierImpl(uuid, fileName, trackName, timePoint);
+    }
+
+    @Override
+    public Pair<JSONObject, String> serialize(DeviceIdentifier deviceIdentifier) throws TransformationException {
+        TrackFileImportDeviceIdentifier id = TrackFileImportDeviceIdentifierImpl.cast(deviceIdentifier);
+        JSONObject result = new JSONObject();
+        result.put(Fields.UUID.name(), id.getId().toString());
+        result.put(Fields.FILE_NAME.name(), id.getFileName());
+        result.put(Fields.TRACK_NAME.name(), id.getTrackName());
+        result.put(Fields.DATE_AS_MILLIS.name(), id.getUploadedAt() == null ? null : id.getUploadedAt().asMillis());
+        return new Pair<JSONObject, String>(result, TrackFileImportDeviceIdentifier.TYPE);
+    }
+
+}
diff --git a/java/com.sap.sailing.domain.racelogtrackingadapter/src/com/sap/sailing/domain/racelogtracking/impl/TrackFileImportDeviceIdentifierMongoHandler.java b/java/com.sap.sailing.domain.racelogtrackingadapter/src/com/sap/sailing/domain/racelogtracking/impl/TrackFileImportDeviceIdentifierMongoHandler.java
index 86423597e74..a89e9bdbfcf 100644
--- a/java/com.sap.sailing.domain.racelogtrackingadapter/src/com/sap/sailing/domain/racelogtracking/impl/TrackFileImportDeviceIdentifierMongoHandler.java
+++ b/java/com.sap.sailing.domain.racelogtrackingadapter/src/com/sap/sailing/domain/racelogtracking/impl/TrackFileImportDeviceIdentifierMongoHandler.java
@@ -10,8 +10,8 @@ import com.sap.sailing.domain.common.impl.Util.Pair;
 import com.sap.sailing.domain.common.racelog.tracking.TransformationException;
 import com.sap.sailing.domain.persistence.racelog.tracking.DeviceIdentifierMongoHandler;
 import com.sap.sailing.domain.racelog.tracking.DeviceIdentifier;
-import com.sap.sailing.domain.racelogtracking.TrackFileImportDeviceIdentifier;
-import com.sap.sailing.domain.racelogtracking.TrackFileImportDeviceIdentifierImpl;
+import com.sap.sailing.server.gateway.trackfiles.TrackFileImportDeviceIdentifier;
+import com.sap.sailing.server.gateway.trackfiles.TrackFileImportDeviceIdentifierImpl;
 
 public class TrackFileImportDeviceIdentifierMongoHandler implements DeviceIdentifierMongoHandler {
     private static enum Fields {UUID, FILE_NAME, TRACK_NAME, DATE_AS_MILLIS};
@@ -32,7 +32,7 @@ public class TrackFileImportDeviceIdentifierMongoHandler implements DeviceIdenti
     public Pair<DBObject, String> serialize(DeviceIdentifier deviceIdentifier) throws TransformationException {
         TrackFileImportDeviceIdentifier id = TrackFileImportDeviceIdentifierImpl.cast(deviceIdentifier);
         DBObject result = new BasicDBObject();
-        result.put(Fields.UUID.name(), id.getId());
+        result.put(Fields.UUID.name(), id.getId().toString());
         result.put(Fields.FILE_NAME.name(), id.getFileName());
         result.put(Fields.TRACK_NAME.name(), id.getTrackName());
         result.put(Fields.DATE_AS_MILLIS.name(), id.getUploadedAt() == null ? null : id.getUploadedAt().asMillis());
diff --git a/java/com.sap.sailing.domain.racelogtrackingadapter/src/com/sap/sailing/domain/racelogtracking/impl/TrackFileImportDeviceIdentifierStringSerializationhandler.java b/java/com.sap.sailing.domain.racelogtrackingadapter/src/com/sap/sailing/domain/racelogtracking/impl/TrackFileImportDeviceIdentifierStringSerializationhandler.java
index f7cd899a784..bca848938d6 100644
--- a/java/com.sap.sailing.domain.racelogtrackingadapter/src/com/sap/sailing/domain/racelogtracking/impl/TrackFileImportDeviceIdentifierStringSerializationhandler.java
+++ b/java/com.sap.sailing.domain.racelogtrackingadapter/src/com/sap/sailing/domain/racelogtracking/impl/TrackFileImportDeviceIdentifierStringSerializationhandler.java
@@ -6,8 +6,8 @@ import com.sap.sailing.domain.common.impl.Util.Pair;
 import com.sap.sailing.domain.common.racelog.tracking.TransformationException;
 import com.sap.sailing.domain.racelog.tracking.DeviceIdentifier;
 import com.sap.sailing.domain.racelog.tracking.DeviceIdentifierStringSerializationHandler;
-import com.sap.sailing.domain.racelogtracking.TrackFileImportDeviceIdentifier;
-import com.sap.sailing.domain.racelogtracking.TrackFileImportDeviceIdentifierImpl;
+import com.sap.sailing.server.gateway.trackfiles.TrackFileImportDeviceIdentifier;
+import com.sap.sailing.server.gateway.trackfiles.TrackFileImportDeviceIdentifierImpl;
 
 public class TrackFileImportDeviceIdentifierStringSerializationhandler implements
         DeviceIdentifierStringSerializationHandler {
diff --git a/java/com.sap.sailing.server.gateway/META-INF/MANIFEST.MF b/java/com.sap.sailing.server.gateway/META-INF/MANIFEST.MF
index 89560e42a09..289ce8f9cd7 100644
--- a/java/com.sap.sailing.server.gateway/META-INF/MANIFEST.MF
+++ b/java/com.sap.sailing.server.gateway/META-INF/MANIFEST.MF
@@ -44,4 +44,5 @@ Bundle-ClassPath: .
 Web-ContextPath: /sailingserver
 Export-Package: com.sap.sailing.server.gateway,
  com.sap.sailing.server.gateway.jaxrs,
- com.sap.sailing.server.gateway.jaxrs.spi
+ com.sap.sailing.server.gateway.jaxrs.spi,
+ com.sap.sailing.server.gateway.trackfiles
diff --git a/java/com.sap.sailing.server.gateway/WEB-INF/web.xml b/java/com.sap.sailing.server.gateway/WEB-INF/web.xml
index 4869bdc2392..5989f0814ed 100644
--- a/java/com.sap.sailing.server.gateway/WEB-INF/web.xml
+++ b/java/com.sap.sailing.server.gateway/WEB-INF/web.xml
@@ -205,11 +205,19 @@
 	</servlet-mapping>
 	<servlet>
 		<servlet-name>TrackFilesExportPostServlet</servlet-name>
-		<servlet-class>com.sap.sailing.server.gateway.impl.TrackFilesExportPostServlet</servlet-class>
+		<servlet-class>com.sap.sailing.server.gateway.trackfiles.impl.TrackFilesExportPostServlet</servlet-class>
 	</servlet>
 	<servlet-mapping>
 		<servlet-name>TrackFilesExportPostServlet</servlet-name>
-		<url-pattern>/trackfiles</url-pattern>
+		<url-pattern>/trackfiles/export</url-pattern>
+	</servlet-mapping>
+	<servlet>
+		<servlet-name>TrackFilesImportServlet</servlet-name>
+		<servlet-class>com.sap.sailing.server.gateway.trackfiles.impl.TrackFilesImportServlet</servlet-class>
+	</servlet>
+	<servlet-mapping>
+		<servlet-name>TrackFilesImportServlet</servlet-name>
+		<url-pattern>/trackfiles/import</url-pattern>
 	</servlet-mapping>
    
     <servlet>
diff --git a/java/com.sap.sailing.domain.racelogtrackingadapter/src/com/sap/sailing/domain/racelogtracking/TrackFileImportDeviceIdentifier.java b/java/com.sap.sailing.server.gateway/src/com/sap/sailing/server/gateway/trackfiles/TrackFileImportDeviceIdentifier.java
similarity index 93%
rename from java/com.sap.sailing.domain.racelogtrackingadapter/src/com/sap/sailing/domain/racelogtracking/TrackFileImportDeviceIdentifier.java
rename to java/com.sap.sailing.server.gateway/src/com/sap/sailing/server/gateway/trackfiles/TrackFileImportDeviceIdentifier.java
index 90248453d41..6da8fd9d99d 100644
--- a/java/com.sap.sailing.domain.racelogtrackingadapter/src/com/sap/sailing/domain/racelogtracking/TrackFileImportDeviceIdentifier.java
+++ b/java/com.sap.sailing.server.gateway/src/com/sap/sailing/server/gateway/trackfiles/TrackFileImportDeviceIdentifier.java
@@ -1,4 +1,4 @@
-package com.sap.sailing.domain.racelogtracking;
+package com.sap.sailing.server.gateway.trackfiles;
 
 import java.util.UUID;
 
diff --git a/java/com.sap.sailing.domain.racelogtrackingadapter/src/com/sap/sailing/domain/racelogtracking/TrackFileImportDeviceIdentifierImpl.java b/java/com.sap.sailing.server.gateway/src/com/sap/sailing/server/gateway/trackfiles/TrackFileImportDeviceIdentifierImpl.java
similarity index 92%
rename from java/com.sap.sailing.domain.racelogtrackingadapter/src/com/sap/sailing/domain/racelogtracking/TrackFileImportDeviceIdentifierImpl.java
rename to java/com.sap.sailing.server.gateway/src/com/sap/sailing/server/gateway/trackfiles/TrackFileImportDeviceIdentifierImpl.java
index 64e5ad0f338..11a1f868739 100644
--- a/java/com.sap.sailing.domain.racelogtrackingadapter/src/com/sap/sailing/domain/racelogtracking/TrackFileImportDeviceIdentifierImpl.java
+++ b/java/com.sap.sailing.server.gateway/src/com/sap/sailing/server/gateway/trackfiles/TrackFileImportDeviceIdentifierImpl.java
@@ -1,4 +1,4 @@
-package com.sap.sailing.domain.racelogtracking;
+package com.sap.sailing.server.gateway.trackfiles;
 
 import java.text.DateFormat;
 import java.text.SimpleDateFormat;
@@ -46,8 +46,8 @@ public class TrackFileImportDeviceIdentifierImpl implements TrackFileImportDevic
     
     @Override
     public boolean equals(Object obj) {
-        if (obj instanceof PingDeviceIdentifier) {
-            return id.equals(((PingDeviceIdentifier) obj).getId());
+        if (obj instanceof TrackFileImportDeviceIdentifier) {
+            return id.equals(((TrackFileImportDeviceIdentifier) obj).getId());
         }
         return false;
     }
diff --git a/java/com.sap.sailing.server.gateway/src/com/sap/sailing/server/gateway/impl/TrackFilesExportPostServlet.java b/java/com.sap.sailing.server.gateway/src/com/sap/sailing/server/gateway/trackfiles/impl/TrackFilesExportPostServlet.java
similarity index 98%
rename from java/com.sap.sailing.server.gateway/src/com/sap/sailing/server/gateway/impl/TrackFilesExportPostServlet.java
rename to java/com.sap.sailing.server.gateway/src/com/sap/sailing/server/gateway/trackfiles/impl/TrackFilesExportPostServlet.java
index 5a47e83c3e4..7f24fed6a5d 100644
--- a/java/com.sap.sailing.server.gateway/src/com/sap/sailing/server/gateway/impl/TrackFilesExportPostServlet.java
+++ b/java/com.sap.sailing.server.gateway/src/com/sap/sailing/server/gateway/trackfiles/impl/TrackFilesExportPostServlet.java
@@ -1,4 +1,4 @@
-package com.sap.sailing.server.gateway.impl;
+package com.sap.sailing.server.gateway.trackfiles.impl;
 
 import java.io.IOException;
 import java.util.ArrayList;
diff --git a/java/com.sap.sailing.server.gateway/src/com/sap/sailing/server/gateway/trackfiles/impl/TrackFilesImportServlet.java b/java/com.sap.sailing.server.gateway/src/com/sap/sailing/server/gateway/trackfiles/impl/TrackFilesImportServlet.java
new file mode 100644
index 00000000000..d4e83596324
--- /dev/null
+++ b/java/com.sap.sailing.server.gateway/src/com/sap/sailing/server/gateway/trackfiles/impl/TrackFilesImportServlet.java
@@ -0,0 +1,113 @@
+package com.sap.sailing.server.gateway.trackfiles.impl;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.apache.commons.fileupload.FileItem;
+import org.apache.commons.fileupload.FileItemFactory;
+import org.apache.commons.fileupload.FileUploadException;
+import org.apache.commons.fileupload.disk.DiskFileItemFactory;
+import org.apache.commons.fileupload.servlet.ServletFileUpload;
+import org.json.simple.JSONArray;
+
+import com.sap.sailing.domain.common.racelog.tracking.TypeBasedServiceFinder;
+import com.sap.sailing.domain.racelog.tracking.DeviceIdentifier;
+import com.sap.sailing.domain.tracking.GPSFix;
+import com.sap.sailing.server.gateway.AbstractJsonHttpServlet;
+import com.sap.sailing.server.gateway.serialization.JsonSerializer;
+import com.sap.sailing.server.gateway.serialization.impl.DeviceIdentifierJsonSerializer;
+import com.sap.sailing.server.gateway.serialization.racelog.tracking.DeviceIdentifierJsonHandler;
+import com.sap.sailing.server.gateway.trackfiles.TrackFileImportDeviceIdentifierImpl;
+import com.sap.sailing.server.trackfiles.Import;
+import com.sap.sailing.server.trackfiles.Import.FixCallback;
+
+/**
+ * Servlet that processes uploaded track files by adding their fixes to the GPSFixStore.
+ * Returns a JSON array of generated device identifiers.
+ * @author Fredrik Teschke
+ *
+ */
+public class TrackFilesImportServlet extends AbstractJsonHttpServlet {
+    private static final long serialVersionUID = 1120226743039934620L;
+    
+    private void storeFix(GPSFix fix, DeviceIdentifier deviceIdentifier) {
+        getService().getGPSFixStore().storeFix(deviceIdentifier, fix);
+    }
+
+    @SuppressWarnings("unchecked")
+    @Override
+    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+        if (!ServletFileUpload.isMultipartContent(req)) {
+            resp.sendError(HttpServletResponse.SC_BAD_REQUEST);
+            return;
+        }
+
+        Set<FileItem> files = new HashSet<>();
+        FileItemFactory factory = new DiskFileItemFactory();
+        ServletFileUpload upload = new ServletFileUpload(factory);
+        List<FileItem> items;
+        try {
+            items = (List<FileItem>) upload.parseRequest(req);
+        } catch (FileUploadException e) {
+            throw new IOException("Could not parse request");
+        }
+        for (FileItem item : items) {
+            if (!item.isFormField())
+                files.add(item);
+        }
+        
+        final List<DeviceIdentifier> deviceIdList = new ArrayList<>();
+        for (FileItem file : files) {
+            final String fileName = file.getName();
+            final Map<String, DeviceIdentifier> deviceIds = new HashMap<>();
+            
+            Import.INSTANCE.importFixes(file.getInputStream(), new FixCallback() {
+                @Override
+                public void addFix(GPSFix fix, String trackName) {
+                    DeviceIdentifier deviceId = deviceIds.get(trackName);
+                    if (deviceId == null) {
+                        deviceId = new TrackFileImportDeviceIdentifierImpl(fileName, trackName);
+                        deviceIds.put(trackName, deviceId);
+                        deviceIdList.add(deviceId);
+                    }
+                    storeFix(fix, deviceId);
+                }
+                
+                @Override
+                public void addFix(GPSFix fix) {
+                    DeviceIdentifier deviceId = deviceIds.get(null);
+                    if (deviceId == null) {
+                        deviceId = new TrackFileImportDeviceIdentifierImpl(fileName, null);
+                        deviceIds.put(null, deviceId);
+                        deviceIdList.add(deviceId);
+                    }
+                    storeFix(fix, deviceId);
+                }
+            }, true);
+        }
+        
+        //setJsonResponseHeader(resp);
+        //DO NOT set a JSON response header. This causes the browser to wrap the response in a
+        //<pre> tag when uploading from GWT, as this is an AJAX-request inside an iFrame.
+        resp.setContentType("text/html");
+        
+        TypeBasedServiceFinder<DeviceIdentifierJsonHandler> serviceFinder =
+                getServiceFinderFactory().createServiceFinder(DeviceIdentifierJsonHandler.class);
+        JsonSerializer<DeviceIdentifier> serializer = new DeviceIdentifierJsonSerializer(serviceFinder);
+        JSONArray array = new JSONArray();
+        for (DeviceIdentifier deviceId : deviceIdList) {
+            array.add(serializer.serialize(deviceId));
+        }
+        
+        array.writeJSONString(resp.getWriter());
+    }
+}
diff --git a/java/com.sap.sailing.server.trackfiles.test/resources/Cardiff Race17 - COMPETITORS.gpx b/java/com.sap.sailing.server.trackfiles.test/resources/Cardiff Race17 - COMPETITORS.gpx
new file mode 100644
index 00000000000..1ad02e15405
--- /dev/null
+++ b/java/com.sap.sailing.server.trackfiles.test/resources/Cardiff Race17 - COMPETITORS.gpx	
@@ -0,0 +1,72041 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<gpx xmlns="http://www.topografix.com/GPX/1/1" xmlns:gpxtrx="http://www.garmin.com/xmlschemas/GpxExtensions/v3" xmlns:rcxx="http://www.routeconverter.de/xmlschemas/RouteCatalogExtensions/1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:gpxtpx="http://www.garmin.com/xmlschemas/TrackPointExtension/v1" xmlns:gpxx="http://www.garmin.com/xmlschemas/WaypointExtension/v1" xmlns:nmea="http://trekbuddy.net/2009/01/gpx/nmea" version="1.1" creator="Generated by Christian Pesch's RouteConverter. See http://www.routeconverter.com">
+    <trk>
+        <name>Alinghi - Alinghi - SUI</name>
+        <desc></desc>
+        <trkseg>
+            <trkpt lat="51.460155" lon="-3.1637369">
+                <ele>0.0</ele>
+                <time>2012-09-01T12:53:26.000Z</time>
+                <extensions>
+                    <nmea:speed>4.0</nmea:speed>
+                    <nmea:course>252.0</nmea:course>
+                </extensions>
+            </trkpt>
+            <trkpt lat="51.4601479" lon="-3.163758">
+                <ele>0.0</ele>
+                <time>2012-09-01T12:53:28.000Z</time>
+                <extensions>
+                    <nmea:speed>2.0</nmea:speed>
+                    <nmea:course>256.0</nmea:course>
+                </extensions>
+            </trkpt>
+            <trkpt lat="51.4601479" lon="-3.1637719">
+                <ele>0.0</ele>
+                <time>2012-09-01T12:53:29.000Z</time>
+                <extensions>
+                    <nmea:speed>3.0</nmea:speed>
+                    <nmea:course>256.0</nmea:course>
+                </extensions>
+            </trkpt>
+            <trkpt lat="51.460137" lon="-3.163808">
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+            <trkpt lat="51.460178" lon="-3.165322">
+                <ele>0.0</ele>
+                <time>2012-09-01T13:20:07.000Z</time>
+                <extensions>
+                    <nmea:speed>12.0</nmea:speed>
+                    <nmea:course>150.0</nmea:course>
+                </extensions>
+            </trkpt>
+            <trkpt lat="51.460113" lon="-3.165268">
+                <ele>0.0</ele>
+                <time>2012-09-01T13:20:09.000Z</time>
+                <extensions>
+                    <nmea:speed>17.0</nmea:speed>
+                    <nmea:course>158.0</nmea:course>
+                </extensions>
+            </trkpt>
+            <trkpt lat="51.460018" lon="-3.165233">
+                <ele>0.0</ele>
+                <time>2012-09-01T13:20:11.000Z</time>
+                <extensions>
+                    <nmea:speed>20.0</nmea:speed>
+                    <nmea:course>175.0</nmea:course>
+                </extensions>
+            </trkpt>
+            <trkpt lat="51.459897" lon="-3.165225">
+                <ele>0.0</ele>
+                <time>2012-09-01T13:20:13.000Z</time>
+                <extensions>
+                    <nmea:speed>24.0</nmea:speed>
+                    <nmea:course>179.0</nmea:course>
+                </extensions>
+            </trkpt>
+            <trkpt lat="51.459763" lon="-3.1652079">
+                <ele>0.0</ele>
+                <time>2012-09-01T13:20:15.000Z</time>
+                <extensions>
+                    <nmea:speed>24.0</nmea:speed>
+                    <nmea:course>173.0</nmea:course>
+                </extensions>
+            </trkpt>
+            <trkpt lat="51.459628" lon="-3.165187">
+                <ele>0.0</ele>
+                <time>2012-09-01T13:20:17.000Z</time>
+                <extensions>
+                    <nmea:speed>29.0</nmea:speed>
+                    <nmea:course>170.0</nmea:course>
+                </extensions>
+            </trkpt>
+            <trkpt lat="51.459457" lon="-3.165143">
+                <ele>0.0</ele>
+                <time>2012-09-01T13:20:19.000Z</time>
+                <extensions>
+                    <nmea:speed>33.0</nmea:speed>
+                    <nmea:course>169.0</nmea:course>
+                </extensions>
+            </trkpt>
+            <trkpt lat="51.45929" lon="-3.165052">
+                <ele>0.0</ele>
+                <time>2012-09-01T13:20:21.000Z</time>
+                <extensions>
+                    <nmea:speed>36.0</nmea:speed>
+                    <nmea:course>157.0</nmea:course>
+                </extensions>
+            </trkpt>
+            <trkpt lat="51.459113" lon="-3.164925">
+                <ele>0.0</ele>
+                <time>2012-09-01T13:20:23.000Z</time>
+                <extensions>
+                    <nmea:speed>36.0</nmea:speed>
+                    <nmea:course>155.0</nmea:course>
+                </extensions>
+            </trkpt>
+            <trkpt lat="51.458962" lon="-3.164812">
+                <ele>0.0</ele>
+                <time>2012-09-01T13:20:25.000Z</time>
+                <extensions>
+                    <nmea:speed>34.0</nmea:speed>
+                    <nmea:course>155.0</nmea:course>
+                </extensions>
+            </trkpt>
+        </trkseg>
+    </trk>
+</gpx>
diff --git a/java/com.sap.sailing.server.trackfiles.test/src/com/sap/sailing/server/trackfiles/test/TrackFileImportTest.java b/java/com.sap.sailing.server.trackfiles.test/src/com/sap/sailing/server/trackfiles/test/TrackFileImportTest.java
new file mode 100644
index 00000000000..92a8a5efd91
--- /dev/null
+++ b/java/com.sap.sailing.server.trackfiles.test/src/com/sap/sailing/server/trackfiles/test/TrackFileImportTest.java
@@ -0,0 +1,42 @@
+package com.sap.sailing.server.trackfiles.test;
+
+import static org.junit.Assert.*;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+import org.junit.Before;
+import org.junit.Test;
+
+import com.sap.sailing.domain.tracking.GPSFix;
+import com.sap.sailing.domain.tracking.GPSFixMoving;
+import com.sap.sailing.server.trackfiles.Import;
+import com.sap.sailing.server.trackfiles.Import.FixCallback;
+
+public class TrackFileImportTest {
+    private boolean callbackCalled = false;
+    
+    @Before
+    public void setup() {
+        callbackCalled = false;
+    }
+    
+    @Test
+    public void testImport() throws IOException {
+        InputStream in = getClass().getResourceAsStream("/Cardiff Race17 - COMPETITORS.gpx");
+        Import.INSTANCE.importFixes(in, new FixCallback() {
+            @Override
+            public void addFix(GPSFix fix, String trackName) {
+                if (fix instanceof GPSFixMoving) {
+                    callbackCalled = true;
+                }
+            }
+            
+            @Override
+            public void addFix(GPSFix fix) {
+                // expecting track names
+            }
+        }, false);
+        assertTrue(callbackCalled);
+    }
+}
diff --git a/java/com.sap.sailing.server.trackfiles/src/com/sap/sailing/server/trackfiles/Import.java b/java/com.sap.sailing.server.trackfiles/src/com/sap/sailing/server/trackfiles/Import.java
new file mode 100644
index 00000000000..68908ca8f35
--- /dev/null
+++ b/java/com.sap.sailing.server.trackfiles/src/com/sap/sailing/server/trackfiles/Import.java
@@ -0,0 +1,24 @@
+package com.sap.sailing.server.trackfiles;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+import com.sap.sailing.domain.tracking.GPSFix;
+import com.sap.sailing.server.trackfiles.impl.ImportImpl;
+
+public interface Import {
+    Import INSTANCE = new ImportImpl();
+    
+    interface FixCallback {
+        void addFix(GPSFix fix);
+        void addFix(GPSFix fix, String trackName);
+    }
+    
+    /**
+     * Retrieves the fixes from the {@code inputStream}, and calls the
+     * {@code callback} with every new fix.
+     * @param inferSpeedAndBearing Should speed and bearing be inferred by looking
+     * at the previous fix, if that data is not directly present within the file?
+     */
+    void importFixes(InputStream inputStream, FixCallback callback, boolean inferSpeedAndBearing) throws IOException;
+}
diff --git a/java/com.sap.sailing.server.trackfiles/src/com/sap/sailing/server/trackfiles/impl/ImportImpl.java b/java/com.sap.sailing.server.trackfiles/src/com/sap/sailing/server/trackfiles/impl/ImportImpl.java
new file mode 100644
index 00000000000..93e6c105cde
--- /dev/null
+++ b/java/com.sap.sailing.server.trackfiles/src/com/sap/sailing/server/trackfiles/impl/ImportImpl.java
@@ -0,0 +1,105 @@
+package com.sap.sailing.server.trackfiles.impl;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.lang.reflect.Method;
+import java.util.Arrays;
+import java.util.Date;
+import java.util.List;
+
+import slash.common.type.CompactCalendar;
+import slash.navigation.base.BaseNavigationPosition;
+import slash.navigation.base.BaseRoute;
+import slash.navigation.base.NavigationFormatParser;
+import slash.navigation.base.ParserResult;
+import slash.navigation.base.Wgs84Position;
+import slash.navigation.gpx.Gpx11Format;
+
+import com.sap.sailing.domain.common.Position;
+import com.sap.sailing.domain.common.SpeedWithBearing;
+import com.sap.sailing.domain.common.TimePoint;
+import com.sap.sailing.domain.common.impl.DegreeBearingImpl;
+import com.sap.sailing.domain.common.impl.DegreePosition;
+import com.sap.sailing.domain.common.impl.KnotSpeedWithBearingImpl;
+import com.sap.sailing.domain.common.impl.MillisecondsTimePoint;
+import com.sap.sailing.domain.tracking.GPSFix;
+import com.sap.sailing.domain.tracking.impl.GPSFixImpl;
+import com.sap.sailing.domain.tracking.impl.GPSFixMovingImpl;
+import com.sap.sailing.server.trackfiles.Import;
+
+/**
+ * Currently can only import GPX v1.1 files. See bug 1933 for a detailed discussion.
+ * @author Fredrik Teschke
+ *
+ */
+public class ImportImpl implements Import {
+    @SuppressWarnings({ "unchecked", "rawtypes" })
+    @Override
+    public void importFixes(InputStream inputStream, FixCallback callback, boolean inferSpeedAndBearing) throws IOException {
+        //TODO for now we can't use this, as this invokes GPSBabel -> license problem (bug 1933)
+//        @SuppressWarnings("rawtypes")
+//        List<BaseRoute> routes = new NavigationFormatParser().read(inputStream).getAllRoutes();
+        
+        //TODO dirty hack, because no public read method for inputstream and custom list of formats
+        NavigationFormatParser parser = new NavigationFormatParser();
+        List<BaseRoute> routes;
+        try {
+            Method m = NavigationFormatParser.class.getDeclaredMethod("read", InputStream.class, Integer.TYPE,
+                    CompactCalendar.class, List.class);
+            m.setAccessible(true);
+            ParserResult result = (ParserResult) m.invoke(parser, inputStream, 1024 * 1024, null,
+                    Arrays.asList(new Gpx11Format()));
+            if (result == null) {
+                throw new IOException("Could not find routes in file - only understand GPX v1.1");
+            }
+            routes = result.getAllRoutes();
+        } catch (Exception e) {
+            throw new IOException(e);
+        }
+        
+        for (BaseRoute route : routes) {
+            String routeName = route.getName();
+            List<? extends BaseNavigationPosition> positions = (List<? extends BaseNavigationPosition>) route.getPositions();
+            GPSFix previousFix = null;
+            for (BaseNavigationPosition p : positions) {
+                try {
+                    Date t = p.getTime().getTime();
+                    Double heading = null;
+                    if (p instanceof Wgs84Position) {
+                        heading = ((Wgs84Position) p).getHeading();
+                    }
+                    Double speed = p.getSpeed();
+
+                    Position pos = new DegreePosition(p.getLatitude(), p.getLongitude());
+                    TimePoint timePoint = new MillisecondsTimePoint(t);
+
+                    SpeedWithBearing speedWithBearing = null;
+                    
+                    if (speed != null && heading != null) {
+                        speedWithBearing = new KnotSpeedWithBearingImpl(speed, new DegreeBearingImpl(heading));
+                    } else if (inferSpeedAndBearing && previousFix != null) {
+                        GPSFix tmpFix = new GPSFixImpl(pos, timePoint);
+                        speedWithBearing = previousFix.getSpeedAndBearingRequiredToReach(tmpFix);
+                    }
+                    
+                    GPSFix fix = null;
+                    if (speedWithBearing != null) {
+                        fix = new GPSFixMovingImpl(pos, timePoint, speedWithBearing);
+                    } else {
+                        fix = new GPSFixImpl(pos, timePoint);
+                    }
+                    
+                    if (routeName != null) {
+                        callback.addFix(fix, routeName);
+                    } else {
+                        callback.addFix(fix);
+                    }
+                    previousFix = fix;
+                } catch (Exception e) {
+                    e.printStackTrace();
+                }
+            }
+        }
+    }
+
+}