private void render(ServletRequest request, HttpServletResponse response, FeedMessage message)
throws IOException {
if (request.getParameter("debug") != null) {
response.setContentType("text/plain");
response.getWriter().write(message.toString());
} else {
response.setContentType("application/x-google-protobuf");
message.writeTo(response.getOutputStream());
}
}
/**
* Constructs a new {@link FeedMessage.Builder} that can be used to build a new GTFS-realtime feed
* message. The {@link FeedHeader} will already be filled in as a {@link
* Incrementality#FULL_DATASET} and the timestamp of the feed will be set to NOW. This is the
* minimal requirement for an empty feed so the feed could be returned 'as-is' at this point.
*
* @return a new feed message builder with a header already populated
*/
public static FeedMessage.Builder createFeedMessageBuilder() {
long now = System.currentTimeMillis();
FeedHeader.Builder header = FeedHeader.newBuilder();
header.setTimestamp(now / 1000);
header.setIncrementality(Incrementality.FULL_DATASET);
header.setGtfsRealtimeVersion(GtfsRealtimeConstants.VERSION);
FeedMessage.Builder feedMessageBuilder = FeedMessage.newBuilder();
feedMessageBuilder.setHeader(header);
return feedMessageBuilder;
}
public void record(FeedMessage feedMessage) throws SQLException {
int numAlerts = 0;
int numTripUpdates = 0;
int numVehiclePositions = 0;
mOpenQueries = 0;
for (FeedEntity entity : feedMessage.getEntityList()) {
if (entity.hasAlert()) {
numAlerts++;
}
if (entity.hasTripUpdate()) {
numTripUpdates++;
}
if (entity.hasVehicle()) {
numVehiclePositions++;
}
}
boolean hasAlerts = numAlerts > 0;
boolean hasTripUpdates = numTripUpdates > 0;
boolean hasVehiclePositions = numVehiclePositions > 0;
mLogger.info(
String.format(
"Entities: alerts=%d, updates=%d, positions=%d",
numAlerts, numTripUpdates, numVehiclePositions));
mLogger.info("Clearing tables...");
if (hasAlerts) {
clearAlertsData();
}
if (hasTripUpdates) {
clearTripUpdatesData();
}
if (hasVehiclePositions) {
clearVehiclePositionsData();
}
mLogger.info("Finished clearing tables");
if (!hasAlerts && !hasTripUpdates && !hasVehiclePositions) {
mLogger.info("Nothing to record");
return;
}
boolean useCopy = mConnection instanceof BaseConnection;
CopyManager cm = null;
DataCopier tuCopier = null;
DataCopier stCopier = null;
DataCopier vpCopier = null;
CopyIn tuCopyIn = null;
CopyIn stCopyIn = null;
CopyIn vpCopyIn = null;
if (useCopy) {
cm = new CopyManager((BaseConnection) mConnection);
tuCopier = new DataCopier();
stCopier = new DataCopier();
vpCopier = new DataCopier();
if (hasTripUpdates) {
stCopyIn = cm.copyIn(COPY_TRIP_UPDATES_STOP_TIMES);
mOpenQueries++;
stCopier = new DataCopier(stCopyIn, COPY_SEPARATOR);
} else if (hasVehiclePositions) {
vpCopyIn = cm.copyIn(COPY_VEHICLE_POSITIONS);
mOpenQueries++;
vpCopier = new DataCopier(vpCopyIn, COPY_SEPARATOR);
}
}
for (FeedEntity entity : feedMessage.getEntityList()) {
if (entity.hasAlert()) {
try {
recordAlert(entity.getAlert());
} catch (SQLException e) {
mLogger.warning(getString(e));
}
}
if (entity.hasTripUpdate()) {
try {
recordTripUpdate(entity.getTripUpdate(), tuCopier, stCopier);
} catch (Exception e) {
mLogger.warning(getString(e));
}
}
if (entity.hasVehicle()) {
try {
recordVehicle(entity.getVehicle(), vpCopier);
} catch (Exception e) {
mLogger.warning(getString(e));
}
}
}
if (hasAlerts) {
mLogger.info("Committing alerts... ");
try {
mStatements.get(STALERT).executeBatch();
mStatements.get(STALERT_ENTITIES).executeBatch();
mStatements.get(STALERT_TIMERANGES).executeBatch();
mLogger.info("done");
} catch (Exception e) {
mLogger.warning(getString(e));
}
}
if (hasTripUpdates) {
mLogger.info("Committing trip updates... ");
try {
if (stCopier == null) {
mStatements.get(STTRIPUPDATE_STOPTIMEUPDATES).executeBatch();
} else if (stCopyIn == null && stCopier.size() > 0) {
stCopyIn = cm.copyIn(COPY_TRIP_UPDATES_STOP_TIMES);
mOpenQueries++;
stCopier.write(stCopyIn, COPY_SEPARATOR);
}
} catch (SQLException e) {
e.printStackTrace();
}
if (stCopyIn != null) {
try {
stCopyIn.endCopy();
mOpenQueries--;
} catch (Exception e) {
mLogger.warning(getString(e));
}
}
try {
if (tuCopier == null) {
mStatements.get(STTRIPUPDATE).executeBatch();
} else if (tuCopyIn == null && tuCopier.size() > 0) {
tuCopyIn = cm.copyIn(COPY_TRIP_UPDATES);
mOpenQueries++;
tuCopier.write(tuCopyIn, COPY_SEPARATOR);
}
} catch (SQLException e) {
e.printStackTrace();
}
if (tuCopyIn != null) {
try {
tuCopyIn.endCopy();
mOpenQueries--;
} catch (Exception e) {
mLogger.warning(getString(e));
}
}
mLogger.info("done");
}
if (hasVehiclePositions) {
System.err.print("Committing vehicle positions... ");
try {
if (vpCopier == null) {
mStatements.get(STVEHICLE).executeBatch();
} else if (vpCopyIn == null && vpCopier.size() > 0) {
vpCopyIn = cm.copyIn(COPY_VEHICLE_POSITIONS);
mOpenQueries++;
vpCopier.write(vpCopyIn, COPY_SEPARATOR);
}
} catch (Exception e) {
mLogger.warning(getString(e));
}
if (vpCopyIn != null) {
vpCopyIn.endCopy();
mOpenQueries--;
}
mLogger.info("done");
}
}