@Override
public void doPost(HttpServletRequest httpReq, HttpServletResponse httpRes)
throws ServletException, IOException {
String infoStr =
httpReq.getRemoteAddr() + " " + httpReq.getLocale() + " " + httpReq.getHeader("User-Agent");
String type = httpReq.getContentType();
GPXFile gpxFile;
if (type.contains("application/xml")) {
try {
gpxFile = parseXML(httpReq);
} catch (Exception ex) {
logger.warn("Cannot parse XML for " + httpReq.getQueryString() + ", " + infoStr);
httpRes.setStatus(SC_BAD_REQUEST);
httpRes.getWriter().append(errorsToXML(Collections.<Throwable>singletonList(ex)));
return;
}
} else {
throw new IllegalArgumentException("content type not supported " + type);
}
final String format = getParam(httpReq, "type", "json");
boolean writeGPX = GPX_FORMAT.equals(format);
boolean pointsEncoded = getBooleanParam(httpReq, "points_encoded", true);
boolean enableInstructions = writeGPX || getBooleanParam(httpReq, "instructions", true);
boolean enableElevation = getBooleanParam(httpReq, "elevation", false);
boolean forceRepair = getBooleanParam(httpReq, "force_repair", false);
// TODO export OSM IDs instead, use https://github.com/karussell/graphhopper-osm-id-mapping
boolean enableTraversalKeys = getBooleanParam(httpReq, "traversal_keys", false);
int maxNodesToVisit = (int) getLongParam(httpReq, "max_nodes_to_visit", 500);
int separatedSearchDistance = (int) getLongParam(httpReq, "separated_search_distance", 300);
String vehicle = getParam(httpReq, "vehicle", "car");
Locale locale = Helper.getLocale(getParam(httpReq, "locale", "en"));
GHResponse matchGHRsp = new GHResponse();
MatchResult matchRsp = null;
StopWatch sw = new StopWatch().start();
try {
FlagEncoder encoder = hopper.getEncodingManager().getEncoder(vehicle);
MapMatching matching =
new MapMatching(hopper.getGraphHopperStorage(), locationIndexMatch, encoder);
matching.setForceRepair(forceRepair);
matching.setMaxNodesToVisit(maxNodesToVisit);
matching.setSeparatedSearchDistance(separatedSearchDistance);
matchRsp = matching.doWork(gpxFile.getEntries());
// fill GHResponse for identical structure
Path path = matching.calcPath(matchRsp);
Translation tr = trMap.getWithFallBack(locale);
new PathMerger().doWork(matchGHRsp, Collections.singletonList(path), tr);
} catch (Exception ex) {
matchGHRsp.addError(ex);
}
logger.info(
httpReq.getQueryString()
+ ", "
+ infoStr
+ ", took:"
+ sw.stop().getSeconds()
+ ", entries:"
+ gpxFile.getEntries().size()
+ ", "
+ matchGHRsp.getDebugInfo());
if (EXTENDED_JSON_FORMAT.equals(format)) {
if (matchGHRsp.hasErrors()) {
httpRes.setStatus(SC_BAD_REQUEST);
httpRes.getWriter().append(new JSONArray(matchGHRsp.getErrors()).toString());
} else {
httpRes.getWriter().write(new MatchResultToJson(matchRsp).exportTo().toString());
}
} else if (GPX_FORMAT.equals(format)) {
String xml = createGPXString(httpReq, httpRes, matchGHRsp);
if (matchGHRsp.hasErrors()) {
httpRes.setStatus(SC_BAD_REQUEST);
httpRes.getWriter().append(xml);
} else {
writeResponse(httpRes, xml);
}
} else {
Map<String, Object> map =
routeSerializer.toJSON(
matchGHRsp, true, pointsEncoded, enableElevation, enableInstructions);
if (matchGHRsp.hasErrors()) {
writeJsonError(httpRes, SC_BAD_REQUEST, new JSONObject(map));
} else {
if (enableTraversalKeys) {
if (matchRsp == null) {
throw new IllegalStateException(
"match response has to be none-null if no error happened");
}
// encode edges as traversal keys which includes orientation
// decode simply by multiplying with 0.5
List<Integer> traversalKeylist = new ArrayList<Integer>();
for (EdgeMatch em : matchRsp.getEdgeMatches()) {
EdgeIteratorState edge = em.getEdgeState();
traversalKeylist.add(
GHUtility.createEdgeKey(
edge.getBaseNode(), edge.getAdjNode(), edge.getEdge(), false));
}
map.put("traversal_keys", traversalKeylist);
}
writeJson(httpReq, httpRes, new JSONObject(map));
}
}
}
private void start(CmdArgs args) {
String action = args.get("action", "").toLowerCase();
args.put("graph.location", "./graph-cache");
if (action.equals("import")) {
String vehicle = args.get("vehicle", "car").toLowerCase();
args.put("graph.flagEncoders", vehicle);
args.put("osmreader.osm", args.get("datasource", ""));
// standard should be to remove disconnected islands
args.put("prepare.minNetworkSize", 200);
args.put("prepare.minOneWayNetworkSize", 200);
GraphHopper hopper = new GraphHopper().init(args);
hopper.setCHEnable(false);
hopper.importOrLoad();
} else if (action.equals("match")) {
GraphHopper hopper = new GraphHopper().init(args);
hopper.setCHEnable(false);
logger.info("loading graph from cache");
hopper.load("./graph-cache");
FlagEncoder firstEncoder = hopper.getEncodingManager().fetchEdgeEncoders().get(0);
GraphHopperStorage graph = hopper.getGraphHopperStorage();
int gpxAccuracy = args.getInt("gpxAccuracy", 15);
String instructions = args.get("instructions", "");
logger.info("Setup lookup index. Accuracy filter is at " + gpxAccuracy + "m");
LocationIndexMatch locationIndex =
new LocationIndexMatch(graph, (LocationIndexTree) hopper.getLocationIndex(), gpxAccuracy);
MapMatching mapMatching = new MapMatching(graph, locationIndex, firstEncoder);
mapMatching.setSeparatedSearchDistance(args.getInt("separatedSearchDistance", 500));
mapMatching.setMaxNodesToVisit(args.getInt("maxNodesToVisit", 1000));
mapMatching.setForceRepair(args.getBool("forceRepair", false));
// do the actual matching, get the GPX entries from a file or via stream
String gpxLocation = args.get("gpx", "");
File[] files = getFiles(gpxLocation);
logger.info("Now processing " + files.length + " files");
StopWatch importSW = new StopWatch();
StopWatch matchSW = new StopWatch();
Translation tr = new TranslationMap().doImport().get(instructions);
for (File gpxFile : files) {
try {
importSW.start();
List<GPXEntry> inputGPXEntries =
new GPXFile().doImport(gpxFile.getAbsolutePath()).getEntries();
importSW.stop();
matchSW.start();
MatchResult mr = mapMatching.doWork(inputGPXEntries);
matchSW.stop();
System.out.println(gpxFile);
System.out.println(
"\tmatches:\t"
+ mr.getEdgeMatches().size()
+ ", gps entries:"
+ inputGPXEntries.size());
System.out.println(
"\tgpx length:\t"
+ (float) mr.getGpxEntriesLength()
+ " vs "
+ (float) mr.getMatchLength());
System.out.println(
"\tgpx time:\t"
+ mr.getGpxEntriesMillis() / 1000f
+ " vs "
+ mr.getMatchMillis() / 1000f);
String outFile = gpxFile.getAbsolutePath() + ".res.gpx";
System.out.println("\texport results to:" + outFile);
InstructionList il;
if (instructions.isEmpty()) {
il = new InstructionList(null);
} else {
AltResponse matchGHRsp = new AltResponse();
Path path = mapMatching.calcPath(mr);
new PathMerger().doWork(matchGHRsp, Collections.singletonList(path), tr);
il = matchGHRsp.getInstructions();
}
new GPXFile(mr, il).doExport(outFile);
} catch (Exception ex) {
importSW.stop();
matchSW.stop();
logger.error("Problem with file " + gpxFile + " Error: " + ex.getMessage());
}
}
System.out.println(
"gps import took:" + importSW.getSeconds() + "s, match took: " + matchSW.getSeconds());
} else if (action.equals("getbounds")) {
String gpxLocation = args.get("gpx", "");
File[] files = getFiles(gpxLocation);
BBox bbox = BBox.createInverse(false);
for (File gpxFile : files) {
List<GPXEntry> inputGPXEntries =
new GPXFile().doImport(gpxFile.getAbsolutePath()).getEntries();
for (GPXEntry entry : inputGPXEntries) {
if (entry.getLat() < bbox.minLat) {
bbox.minLat = entry.getLat();
}
if (entry.getLat() > bbox.maxLat) {
bbox.maxLat = entry.getLat();
}
if (entry.getLon() < bbox.minLon) {
bbox.minLon = entry.getLon();
}
if (entry.getLon() > bbox.maxLon) {
bbox.maxLon = entry.getLon();
}
}
}
System.out.println("max bounds: " + bbox);
// show download only for small areas
if (bbox.maxLat - bbox.minLat < 0.1 && bbox.maxLon - bbox.minLon < 0.1) {
double delta = 0.01;
System.out.println(
"Get small areas via\n"
+ "wget -O extract.osm 'http://overpass-api.de/api/map?bbox="
+ (bbox.minLon - delta)
+ ","
+ (bbox.minLat - delta)
+ ","
+ (bbox.maxLon + delta)
+ ","
+ (bbox.maxLat + delta)
+ "'");
}
} else {
System.out.println(
"Usage: Do an import once, then do the matching\n"
+ "./map-matching action=import datasource=your.pbf\n"
+ "./map-matching action=match gpx=your.gpx\n"
+ "./map-matching action=match gpx=.*gpx\n\n"
+ "Or start in-built matching web service\n"
+ "./map-matching action=start-server\n\n");
}
}