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package dk.thoerup.traininfoservice.banedk; |
package dk.thoerup.traininfoservice.banedk; |
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import java.sql.Connection; |
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import java.sql.ResultSet; |
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import java.sql.Statement; |
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import java.util.ArrayList; |
import java.util.ArrayList; |
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import java.util.Collections; |
import java.util.Collections; |
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import java.util.List; |
import java.util.List; |
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import java.util.Map; |
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import java.util.logging.Logger; |
import java.util.logging.Logger; |
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import com.gargoylesoftware.htmlunit.ProxyConfig; |
import com.gargoylesoftware.htmlunit.BrowserVersion; |
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import com.gargoylesoftware.htmlunit.WebClient; |
import com.gargoylesoftware.htmlunit.WebClient; |
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import com.gargoylesoftware.htmlunit.html.DomNodeList; |
import com.gargoylesoftware.htmlunit.html.DomNodeList; |
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import com.gargoylesoftware.htmlunit.html.HtmlElement; |
import com.gargoylesoftware.htmlunit.html.HtmlElement; |
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import com.gargoylesoftware.htmlunit.html.HtmlPage; |
import com.gargoylesoftware.htmlunit.html.HtmlPage; |
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import dk.thoerup.traininfoservice.DBConnection; |
import dk.thoerup.circuitbreaker.CircuitBreaker; |
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import dk.thoerup.circuitbreaker.CircuitBreakerManager; |
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import dk.thoerup.traininfoservice.StationBean; |
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import dk.thoerup.traininfoservice.StationDAO; |
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import dk.thoerup.traininfoservice.Statistics; |
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public class DepartureFetcher { |
public class DepartureFetcher { |
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enum TrainType{ |
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STOG, |
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REGIONAL |
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} |
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Logger logger = Logger.getLogger(DepartureFetcher.class.getName()); |
Logger logger = Logger.getLogger(DepartureFetcher.class.getName()); |
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Map<String, List<DepartureBean>> cache; |
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StationDAO stationDao = new StationDAO(); |
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private boolean useTempSite; |
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public DepartureFetcher(boolean tempSite, int cacheTimeout) { |
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useTempSite = tempSite; |
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cache = new TimeoutMap<String,List<DepartureBean>>(cacheTimeout); |
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} |
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public List<DepartureBean> cachedLookupDepartures(int stationID, boolean arrival) throws Exception { |
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final String key = "" + stationID + ":" + arrival; |
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List<DepartureBean> list = cache.get(key); |
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public List<DepartureBean> lookupDepartures(int stationID) throws Exception { |
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if (list == null) { |
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list = lookupDepartures(stationID,arrival); |
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cache.put(key, list); |
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} else { |
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Statistics.getInstance().incrementDepartureCacheHits(); |
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logger.info("Departure: Cache hit " + key); //remove before production |
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} |
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return list; |
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} |
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public List<DepartureBean> lookupDepartures(int stationID, boolean arrival) throws Exception { |
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List<DepartureBean> departureList = new ArrayList<DepartureBean>(); |
List<DepartureBean> departureList = new ArrayList<DepartureBean>(); |
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Connection conn = null; |
StationBean station = stationDao.getById(stationID); |
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try |
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{ |
if (station.getRegional() != null) { |
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conn = DBConnection.getConnection(); |
List<DepartureBean> list = lookupDepartures(station.getRegional(), TrainType.REGIONAL, arrival); |
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departureList.addAll(list); |
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String SQL = "SELECT stationcode_fjrn, stationcode_stog FROM trainstations WHERE id=" + stationID; |
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Statement stmt = conn.createStatement(); |
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ResultSet rs = stmt.executeQuery(SQL); |
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if (rs.next()) { |
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String code = rs.getString( 1 ); |
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if (! rs.wasNull() ) { |
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List<DepartureBean> list = lookupDepartures(code, "FJRN"); |
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departureList.addAll(list); |
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} |
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code = rs.getString(2); |
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if (! rs.wasNull() ) { |
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List<DepartureBean> list = lookupDepartures(code, "S2"); |
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departureList.addAll(list); |
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} |
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Collections.sort( departureList ); |
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} |
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} finally { |
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if (conn != null && !conn.isClosed() ) { |
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conn.close(); |
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} |
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} |
} |
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if (station.getStrain() != null) { |
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List<DepartureBean> list = lookupDepartures(station.getStrain(), TrainType.STOG, arrival); |
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departureList.addAll(list); |
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} |
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Collections.sort( departureList ); |
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return departureList; |
return departureList; |
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} |
} |
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public List<DepartureBean> lookupDepartures(String stationcode, String type) throws Exception { |
public List<DepartureBean> lookupDepartures(String stationcode, TrainType type, boolean arrival) throws Exception { |
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if (useTempSite == false) { |
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return lookupDeparturesNormalSite(stationcode, type, arrival); |
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} else { |
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//return lookupDeparturesFromTemporarySite(stationcode, type); |
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//TODO: find out what to to if they ever put a temp site up on trafikinfo.bane.dk |
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return null; |
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} |
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} |
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private String getTypeString(TrainType type) { |
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switch (type) { |
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case STOG: |
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return "S-Tog"; |
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case REGIONAL: |
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return "Fjerntog"; |
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default: |
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return ""; //Can not happen |
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} |
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} |
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public List<DepartureBean> lookupDeparturesNormalSite(String stationcode, TrainType type, boolean arrival) throws Exception { |
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List<DepartureBean> departureList = new ArrayList<DepartureBean>(); |
List<DepartureBean> departureList = new ArrayList<DepartureBean>(); |
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final WebClient webClient = new WebClient(); |
final WebClient webClient = new WebClient( BrowserVersion.FIREFOX_3 ); |
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webClient.setTimeout(1000); |
webClient.setTimeout(2500); |
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webClient.setJavaScriptEnabled(false); |
webClient.setJavaScriptEnabled(false); |
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String typeString = getTypeString(type); |
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String arrivalDeparture = (arrival==false) ? "Afgang" : "Ankomst"; |
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//String uri = "http://www.bane.dk/visStation.asp?ArtikelID=4275&W=" + type + "&S=" + stationcode; |
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String uri = "http://trafikinfo.bane.dk/Trafikinformation/AfgangAnkomst/" + arrivalDeparture + "/" + stationcode + "/" + typeString + "/UdvidetVisning"; |
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//logger.info("URI: " + uri); |
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HtmlunitInvocation wrapper = new HtmlunitInvocation(webClient, uri); |
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CircuitBreaker breaker = CircuitBreakerManager.getManager().getCircuitBreaker("banedk"); |
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final HtmlPage page = webClient.getPage("http://www.bane.dk/visStation.asp?ArtikelID=4275&W=" + type + "&S=" + stationcode); |
HtmlPage page = (HtmlPage) breaker.invoke(wrapper); |
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HtmlElement table = page.getElementById("afgangtabel"); |
String tableName = arrival == false ? "afgangtabel" : "ankomsttabel"; |
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HtmlElement table = page.getElementById(tableName); |
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if (table != null) { |
if (table != null) { |
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DomNodeList<HtmlElement> tableRows = table.getElementsByTagName("tr"); |
DomNodeList<HtmlElement> tableRows = table.getElementsByTagName("tr"); |
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DepartureBean departure = new DepartureBean(); |
DepartureBean departure = new DepartureBean(); |
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String time = fields.get(0).asText(); |
String time = fields.get(0).asText(); |
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if (time.equals("")) |
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time = "0:00"; //Bane.dk bug work-around |
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departure.setTime(time); |
departure.setTime(time); |
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int updated = extractUpdated( fields.get(1) ); |
int updated = extractUpdated( fields.get(1) ); |
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departure.setUpdated(updated); |
departure.setUpdated(updated); |
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String trainNumber = fields.get(2).asText(); |
String trainNumber = fields.get(2).asText(); |
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if (trainNumber.trim().length() == 1) |
if (type == TrainType.STOG) //If it is S-train we need to extract the trainNumber |
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trainNumber = trainNumber + " " + extractTrainNumber(fields.get(2)); |
trainNumber = trainNumber + " " + extractTrainNumber(fields.get(2)); |
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departure.setTrainNumber(trainNumber); |
departure.setTrainNumber(trainNumber); |
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String location = fields.get(5).asText(); |
String location = fields.get(5).asText(); |
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departure.setLocation(location); |
departure.setLocation(location); |
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String status = fields.get(6).asText(); |
String status = fields.get(6).asText().trim(); |
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departure.setStatus(status); |
departure.setStatus(status); |
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String note = extractNote( fields.get(7) ); |
String note = extractNote( fields.get(7) ); |
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departure.setNote(note); |
departure.setNote(note); |
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departure.setType(typeString); |
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departureList.add(departure); |
departureList.add(departure); |
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} |
} |
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} |
} |
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} else { |
} else { |
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logger.warning("No departures found for station=" + stationcode + ", type=" + type); |
logger.warning("No departures found for station=" + stationcode + ", type=" + type); |
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} |
} |
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webClient.closeAllWindows(); |
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return departureList; |
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} |
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public List<DepartureBean> lookupDeparturesFromTemporarySite(String stationcode, String type) throws Exception { |
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List<DepartureBean> departureList = new ArrayList<DepartureBean>(); |
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final WebClient webClient = new WebClient(BrowserVersion.FIREFOX_3); |
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webClient.setTimeout(2500); |
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webClient.setJavaScriptEnabled(false); |
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String uri = "http://bane.dk/lite/station.asp?w=" + type + "&s=" + stationcode; |
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HtmlunitInvocation wrapper = new HtmlunitInvocation(webClient, uri); |
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CircuitBreaker breaker = CircuitBreakerManager.getManager().getCircuitBreaker("banedk"); |
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HtmlPage page = (HtmlPage) breaker.invoke(wrapper); |
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HtmlElement table = page.getElementById("traf_afgang"); |
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if (table != null) { |
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DomNodeList<HtmlElement> tableRows = table.getElementsByTagName("tr"); |
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boolean isFirst = true; |
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for (HtmlElement currentRow : tableRows) { |
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if (isFirst == true) { //skip table headers |
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isFirst = false; |
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continue; |
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} |
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DomNodeList<HtmlElement> fields = currentRow.getElementsByTagName("td"); |
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DepartureBean departure = new DepartureBean(); |
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String time = fields.get(0).asText().trim(); |
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if (time.equals("")) |
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time = "0:00"; //Bane.dk bug work-around |
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departure.setTime(time); |
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String trainNumber = fields.get(1).asText(); |
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departure.setTrainNumber(trainNumber); |
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String destination = fields.get(2).asText(); |
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departure.setDestination(destination); |
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String origin = fields.get(3).asText(); |
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departure.setOrigin(origin); |
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String status = fields.get(4).asText(); |
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departure.setStatus(status); |
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String note = fields.get(5).asText(); |
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departure.setNote(note); |
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departureList.add(departure); |
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} |
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} else { |
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logger.warning("No departures found for station=" + stationcode + ", type=" + type); |
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} |
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webClient.closeAllWindows(); |
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return departureList; |
return departureList; |
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} |
} |
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private int extractUpdated(HtmlElement updatedTd) { //extract the digit (in this case: 4) from "media/trafikinfo/opdater4.gif" |
private int extractUpdated(HtmlElement updatedTd) { //extract the digit (in this case: 4) from "media/trafikinfo/opdater4.gif" |
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int updated = -1; |
int updated = -1; |
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} |
} |
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private String extractTrainNumber(HtmlElement trainTd) { |
private String extractTrainNumber(HtmlElement trainTd) { |
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String number = ""; |
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HtmlElement anchorElement = trainTd.getElementsByTagName("a").get(0); |
HtmlElement anchorElement = trainTd.getElementsByTagName("a").get(0); |
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String href = anchorElement.getAttribute("href"); |
String href = anchorElement.getAttribute("href"); |
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String argstring = href.substring( href.indexOf('?') + 1); |
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String args[] = argstring.split("&"); |
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for (String arg : args) { |
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String pair[] = arg.split("="); // Key=pair[0], Value=pair[1] |
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if (pair[0].equalsIgnoreCase("TogNr")) |
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number = pair[1]; |
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} |
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int pos = href.lastIndexOf('/'); |
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String number = href.substring(pos+1); |
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return number; |
return number; |
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} |
} |
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//test |
//test |
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public static void main(String args[]) throws Exception{ |
/* |
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public static void main(String args[]) throws Exception { |
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DepartureFetcher f = new DepartureFetcher(); |
DepartureFetcher f = new DepartureFetcher(); |
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List<DepartureBean> deps = f.lookupDepartures("AR", "FJRN"); |
List<DepartureBean> deps = f.lookupDepartures("AR", "FJRN"); |
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for(DepartureBean d : deps) { |
for(DepartureBean d : deps) { |
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} |
} |
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System.out.println("--------------------------"); |
System.out.println("--------------------------"); |
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} |
}*/ |
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} |
} |