traininfoservice/banedk/TimetableFetcher.java

package dk.thoerup.traininfoservice.banedk;


import java.net.URL;
import java.sql.SQLException;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;

import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;

import dk.thoerup.android.traininfo.common.StationEntry;
import dk.thoerup.android.traininfo.common.TimetableBean;
import dk.thoerup.android.traininfo.common.TimetableEntry;
import dk.thoerup.circuitbreaker.CircuitBreaker;
import dk.thoerup.circuitbreaker.CircuitBreakerManager;
import dk.thoerup.genericjavautils.TimeoutMap;
import dk.thoerup.traininfoservice.Statistics;
import dk.thoerup.traininfoservice.TraininfoSettings;
import dk.thoerup.traininfoservice.db.StationDAO;

public class TimetableFetcher {

                
        Map<String, TimetableBean> cache; 
        Map<String, StationEntry> stationCache;

        StationDAO stationDao = new StationDAO();
        
        
        Logger logger = Logger.getLogger(TimetableFetcher.class.getName());

        TraininfoSettings settings;     
        
        public TimetableFetcher(TraininfoSettings settings) {
                this.settings = settings;
                
                cache = new TimeoutMap<String,TimetableBean>( settings.getCacheTimeout() );
                stationCache = new TimeoutMap<String,StationEntry>( 3*60*60*1000 );
        }
        
        
        TimetableBean cachedLookupTimetable(String trainID, String type) throws Exception {
                String key = trainID+type;
                TimetableBean list = cache.get(key);
                
                if (list == null) {
                        list = lookupTimetable(trainID,type);
                        cache.put(key, list);
                } else {
                        Statistics.getInstance().incrementTimetableCacheHits();
                        logger.info("Timetable: Cache hit " + trainID); 
                }
                return list;
        }
        
        TimetableBean lookupTimetable(String trainID, String type) throws Exception {
                if (settings.getBackend() == TraininfoSettings.Backend.Azure ){
                        return lookupTimetableAzureSite(trainID, type);
                        
                } else {
                        return lookupTimetableMobileSite(trainID, type);
                }
        }
        
        StationEntry getStation(String name) {
                StationEntry station = stationCache.get(name);
                
                if (station == null) {
                        try {
                                station = stationDao.getSimpleByName(name);
                                if (station != null) {
                                        stationCache.put(name,station);
                                }
                        } catch (SQLException e) {
                                logger.log(Level.SEVERE, "getStationId failed", e);
                        }
                } 

                return station;
        }
        
        String correctStationName(String name) {
                if (name.equals("København"))
                        name = "København H"; //correct inconsistency in naming
                
                return name;            
        }

        TimetableBean lookupTimetableAzureSite(String trainID, String type) throws Exception {          
                TimetableBean timetableBean = new TimetableBean();
                

                String url = "http://trafikinfo.bane.dk/TrafikInformation/Ruteplan/" + trainID;                 
                logger.fine("URL:" + url);
            
            JsoupInvocation wrapper = new JsoupInvocation( new URL(url) , settings.getReplyTimeout() );
            CircuitBreaker breaker = CircuitBreakerManager.getManager().getCircuitBreaker("banedk");
            
            Document doc = (Document) breaker.invoke(wrapper);
                    
            
            boolean currentStation = false;
            boolean currentStationSaved = false;
            
            Elements tables = doc.getElementsByClass("Rute");
            
            if (tables.size() == 1) {
                Element timetable = tables.get(0);
                Elements rows = timetable.getElementsByTag("tr");
                
                for (int i=0; i<rows.size(); i++) {
                        if (i==0) //First row is column headers
                                continue;
                        
                        
                        Element row = rows.get(i);
                        Elements fields = row.getElementsByTag("td");

                        
                        if (currentStationSaved == false && fields.get(0).attr("class").equalsIgnoreCase("Tidsstreg")) {
                                currentStation = true;
                                continue;
                        }
                        
                        TimetableEntry entry = new TimetableEntry();
                        
                        String station = correctStationName( fields.get(0).text() );
                        
                        entry.setStation( station );
                        entry.setArrival( fields.get(1).text() );
                        entry.setDeparture( fields.get(2).text() );
                        
                        boolean cancelled = fields.get(3).text().equalsIgnoreCase("aflyst");
                        entry.setCancelled(cancelled);
                        
                        if (currentStation == true && currentStationSaved == false ) {
                                entry.setCurrent(currentStation);
                                currentStationSaved = true;
                        }
                        
                        entry.setStationEntry( getStation( station ));
                        
                        timetableBean.entries.add(entry);
                }
                
                //TODO: There is an off-by-one error in this cancelled parser thingie
                final String cancelledString = "Aflyst";
                for (int i=0;i<timetableBean.entries.size(); i++) { //handle cancelled labels
                        final int lastIdx = (timetableBean.entries.size() - 1);
                        
                        TimetableEntry current = timetableBean.entries.get(i);
                        if (current.isCancelled()) {
                                if (i == 0) {
                                        current.setDeparture(cancelledString);
                                } else if (i == lastIdx) {
                                        current.setArrival(cancelledString);
                                } else if (i>0 && i<lastIdx) {
                                        TimetableEntry next = timetableBean.entries.get(i+1);
                                        TimetableEntry prev = timetableBean.entries.get(i-1);
                                        
                                        if (next.isCancelled())
                                                current.setDeparture(cancelledString);
                                        if (prev.isCancelled())
                                                current.setArrival(cancelledString);
                                }
                        }
                }
                
            } else {
                logger.warning("No time table found, trainID=" + trainID + " type=" + type);
            }
            
                
                return timetableBean;
        }

        TimetableBean lookupTimetableMobileSite(String trainID, String type) throws Exception {
                TimetableBean timetableBean = new TimetableBean();
                
                String url = "http://mobil.bane.dk/mobilStation.asp?artikelID=5332&tognummer=" + trainID + "&webprofil=" + type + "&mode=rute";
                logger.fine("URL:" + url);

            
            JsoupInvocation wrapper = new JsoupInvocation( new URL(url) , settings.getReplyTimeout() );
            CircuitBreaker breaker = CircuitBreakerManager.getManager().getCircuitBreaker("banedk");
            
            Document doc = (Document) breaker.invoke(wrapper);

            Element content = doc.getElementsByClass("contentDiv").get(1);
            Element dlist = content.child(0);

            
            Elements rows = dlist.getElementsByTag("dt");

            for (int i=0; i<rows.size(); i++) {

                Element row = rows.get(i);
                
                logger.fine( row.text() );
                
                String parts[] = row.text().split(",");
                
                TimetableEntry entry = new TimetableEntry();

                String station = DepartureFetcher.cleanText( parts[0] ) ;
                station = correctStationName(station);


                String arrival = DepartureFetcher.cleanText( parts[1] );
                String departure = DepartureFetcher.cleanText( "" );

                entry.setStation( station );
                entry.setArrival( arrival );
                entry.setDeparture( departure );


                entry.setStationEntry( getStation( station ));

                timetableBean.entries.add(entry);
            }           


            return timetableBean;

        }
        
        @Deprecated
        TimetableBean lookupTimetableWwwSite(String trainID, String type) throws Exception {            
                TimetableBean timetableBean = new TimetableBean();
                
                String url = "http://www.bane.dk/visRute.asp?W=" + type + "&TogNr=" + trainID + "&artikelId=4276";
                logger.fine("URL:" + url);

            
            JsoupInvocation wrapper = new JsoupInvocation( new URL(url) , settings.getReplyTimeout() );
            CircuitBreaker breaker = CircuitBreakerManager.getManager().getCircuitBreaker("banedk");
            
            Document doc = (Document) breaker.invoke(wrapper);
                    
            
            boolean currentStation = false;
            boolean currentStationSaved = false;
            
            Elements tables = doc.getElementsByClass("Rute");
            
            if (tables.size() == 1) {
                Element timetable = tables.get(0);
                Elements rows = timetable.getElementsByTag("tr");
                
                for (int i=0; i<rows.size(); i++) {
                        if (i==0) //First row is column headers
                                continue;
                        
                        
                        Element row = rows.get(i);
                        Elements fields = row.getElementsByTag("td");

                        
                        if (currentStationSaved == false && fields.get(0).attr("class").equalsIgnoreCase("Tidsstreg")) {
                                currentStation = true;
                                continue;
                        }
                        
                        TimetableEntry entry = new TimetableEntry();
                        
                        String station = DepartureFetcher.cleanText( fields.get(0).text() ) ;
                        station = correctStationName(station);

                        
                        String arrival = DepartureFetcher.cleanText( fields.get(1).text() );
                        String departure = DepartureFetcher.cleanText( fields.get(2).text() );
                        
                        entry.setStation( station );
                        entry.setArrival( arrival );
                        entry.setDeparture( departure );
                
                        
                        if (currentStation == true && currentStationSaved == false ) {
                                entry.setCurrent(currentStation);
                                currentStationSaved = true;
                        }
                        
                        entry.setStationEntry( getStation( station ));
                        
                        timetableBean.entries.add(entry);
                }               
                
            } else {
                logger.warning("No time table found, trainID=" + trainID + " type=" + type);
            }
            
                
                return timetableBean;
        }       
        
}
1	torben	350	package dk.thoerup.traininfoservice.banedk;
2
3
4	torben	992
5	torben	350	import java.net.URL;
6	torben	836	import java.sql.SQLException;
7	torben	428	import java.util.Map;
8	torben	836	import java.util.logging.Level;
9	torben	350	import java.util.logging.Logger;
10
11	torben	992	import org.jsoup.nodes.Document;
12			import org.jsoup.nodes.Element;
13			import org.jsoup.select.Elements;
14	torben	350
15	torben	1411	import dk.thoerup.android.traininfo.common.StationEntry;
16	torben	1061	import dk.thoerup.android.traininfo.common.TimetableBean;
17			import dk.thoerup.android.traininfo.common.TimetableEntry;
18	torben	468	import dk.thoerup.circuitbreaker.CircuitBreaker;
19			import dk.thoerup.circuitbreaker.CircuitBreakerManager;
20	torben	1355	import dk.thoerup.genericjavautils.TimeoutMap;
21	torben	711	import dk.thoerup.traininfoservice.Statistics;
22	torben	1303	import dk.thoerup.traininfoservice.TraininfoSettings;
23	torben	1255	import dk.thoerup.traininfoservice.db.StationDAO;
24	torben	421
25	torben	350	public class TimetableFetcher {
26	torben	992
27	torben	350
28	torben	1060	Map<String, TimetableBean> cache;
29	torben	1411	Map<String, StationEntry> stationCache;
30	torben	836
31			StationDAO stationDao = new StationDAO();
32	torben	350
33	torben	387
34	torben	350	Logger logger = Logger.getLogger(TimetableFetcher.class.getName());
35	torben	1303
36			TraininfoSettings settings;
37	torben	387
38	torben	1303	public TimetableFetcher(TraininfoSettings settings) {
39			this.settings = settings;
40	torben	584
41	torben	1303	cache = new TimeoutMap<String,TimetableBean>( settings.getCacheTimeout() );
42	torben	1411	stationCache = new TimeoutMap<String,StationEntry>( 36060*1000 );
43	torben	581	}
44
45
46	torben	1060	TimetableBean cachedLookupTimetable(String trainID, String type) throws Exception {
47	torben	387	String key = trainID+type;
48	torben	1060	TimetableBean list = cache.get(key);
49	torben	387
50			if (list == null) {
51			list = lookupTimetable(trainID,type);
52			cache.put(key, list);
53			} else {
54	torben	711	Statistics.getInstance().incrementTimetableCacheHits();
55	torben	389	logger.info("Timetable: Cache hit " + trainID);
56	torben	387	}
57			return list;
58			}
59	torben	581
60	torben	1060	TimetableBean lookupTimetable(String trainID, String type) throws Exception {
61	torben	1372	if (settings.getBackend() == TraininfoSettings.Backend.Azure ){
62	torben	1036	return lookupTimetableAzureSite(trainID, type);
63
64	torben	581	} else {
65	torben	1331	return lookupTimetableMobileSite(trainID, type);
66	torben	581	}
67			}
68	torben	836
69	torben	1417	StationEntry getStation(String name) {
70	torben	1411	StationEntry station = stationCache.get(name);
71	torben	836
72	torben	1411	if (station == null) {
73	torben	836	try {
74	torben	1417	station = stationDao.getSimpleByName(name);
75			if (station != null) {
76	torben	1411	stationCache.put(name,station);
77			}
78	torben	836	} catch (SQLException e) {
79			logger.log(Level.SEVERE, "getStationId failed", e);
80			}
81			}
82	torben	350
83	torben	1411	return station;
84	torben	836	}
85	torben	1406
86			String correctStationName(String name) {
87			if (name.equals("København"))
88			name = "København H"; //correct inconsistency in naming
89
90			return name;
91			}
92	torben	836
93	torben	1060	TimetableBean lookupTimetableAzureSite(String trainID, String type) throws Exception {
94			TimetableBean timetableBean = new TimetableBean();
95	torben	350
96	torben	1048
97	torben	970	String url = "http://trafikinfo.bane.dk/TrafikInformation/Ruteplan/" + trainID;
98	torben	1048	logger.fine("URL:" + url);
99	torben	350
100	torben	1303	JsoupInvocation wrapper = new JsoupInvocation( new URL(url) , settings.getReplyTimeout() );
101	torben	421	CircuitBreaker breaker = CircuitBreakerManager.getManager().getCircuitBreaker("banedk");
102	torben	350
103	torben	992	Document doc = (Document) breaker.invoke(wrapper);
104	torben	421
105	torben	350
106			boolean currentStation = false;
107			boolean currentStationSaved = false;
108
109	torben	992	Elements tables = doc.getElementsByClass("Rute");
110
111	torben	350	if (tables.size() == 1) {
112	torben	992	Element timetable = tables.get(0);
113			Elements rows = timetable.getElementsByTag("tr");
114	torben	350
115			for (int i=0; i<rows.size(); i++) {
116			if (i==0) //First row is column headers
117			continue;
118
119
120	torben	992	Element row = rows.get(i);
121			Elements fields = row.getElementsByTag("td");
122
123	torben	350
124	torben	992	if (currentStationSaved == false && fields.get(0).attr("class").equalsIgnoreCase("Tidsstreg")) {
125	torben	350	currentStation = true;
126			continue;
127			}
128
129	torben	1060	TimetableEntry entry = new TimetableEntry();
130	torben	836
131	torben	1406	String station = correctStationName( fields.get(0).text() );
132	torben	836
133	torben	1060	entry.setStation( station );
134			entry.setArrival( fields.get(1).text() );
135			entry.setDeparture( fields.get(2).text() );
136	torben	350
137	torben	992	boolean cancelled = fields.get(3).text().equalsIgnoreCase("aflyst");
138	torben	1060	entry.setCancelled(cancelled);
139	torben	975
140	torben	350	if (currentStation == true && currentStationSaved == false ) {
141	torben	1060	entry.setCurrent(currentStation);
142	torben	350	currentStationSaved = true;
143			}
144
145	torben	1417	entry.setStationEntry( getStation( station ));
146	torben	836
147	torben	1060	timetableBean.entries.add(entry);
148	torben	350	}
149
150	torben	977	//TODO: There is an off-by-one error in this cancelled parser thingie
151	torben	975	final String cancelledString = "Aflyst";
152	torben	1060	for (int i=0;i<timetableBean.entries.size(); i++) { //handle cancelled labels
153			final int lastIdx = (timetableBean.entries.size() - 1);
154	torben	975
155	torben	1060	TimetableEntry current = timetableBean.entries.get(i);
156	torben	976	if (current.isCancelled()) {
157			if (i == 0) {
158			current.setDeparture(cancelledString);
159			} else if (i == lastIdx) {
160			current.setArrival(cancelledString);
161			} else if (i>0 && i<lastIdx) {
162	torben	1060	TimetableEntry next = timetableBean.entries.get(i+1);
163			TimetableEntry prev = timetableBean.entries.get(i-1);
164	torben	976
165			if (next.isCancelled())
166			current.setDeparture(cancelledString);
167			if (prev.isCancelled())
168			current.setArrival(cancelledString);
169			}
170	torben	975	}
171			}
172
173	torben	350	} else {
174			logger.warning("No time table found, trainID=" + trainID + " type=" + type);
175			}
176	torben	992
177	torben	350
178	torben	1060	return timetableBean;
179	torben	350	}
180	torben	1036
181	torben	1331	TimetableBean lookupTimetableMobileSite(String trainID, String type) throws Exception {
182	torben	1367	TimetableBean timetableBean = new TimetableBean();
183
184			String url = "http://mobil.bane.dk/mobilStation.asp?artikelID=5332&tognummer=" + trainID + "&webprofil=" + type + "&mode=rute";
185			logger.fine("URL:" + url);
186
187
188			JsoupInvocation wrapper = new JsoupInvocation( new URL(url) , settings.getReplyTimeout() );
189			CircuitBreaker breaker = CircuitBreakerManager.getManager().getCircuitBreaker("banedk");
190
191			Document doc = (Document) breaker.invoke(wrapper);
192
193			Element content = doc.getElementsByClass("contentDiv").get(1);
194			Element dlist = content.child(0);
195
196
197			Elements rows = dlist.getElementsByTag("dt");
198
199			for (int i=0; i<rows.size(); i++) {
200
201			Element row = rows.get(i);
202
203	torben	1368	logger.fine( row.text() );
204	torben	1367
205			String parts[] = row.text().split(",");
206
207			TimetableEntry entry = new TimetableEntry();
208
209			String station = DepartureFetcher.cleanText( parts[0] ) ;
210	torben	1406	station = correctStationName(station);
211	torben	1367
212	torben	1406
213	torben	1367	String arrival = DepartureFetcher.cleanText( parts[1] );
214			String departure = DepartureFetcher.cleanText( "" );
215
216			entry.setStation( station );
217			entry.setArrival( arrival );
218			entry.setDeparture( departure );
219
220
221	torben	1417	entry.setStationEntry( getStation( station ));
222	torben	1367
223			timetableBean.entries.add(entry);
224			}
225
226
227			return timetableBean;
228
229	torben	1331	}
230
231			@Deprecated
232	torben	1060	TimetableBean lookupTimetableWwwSite(String trainID, String type) throws Exception {
233			TimetableBean timetableBean = new TimetableBean();
234	torben	1036
235			String url = "http://www.bane.dk/visRute.asp?W=" + type + "&TogNr=" + trainID + "&artikelId=4276";
236	torben	1048	logger.fine("URL:" + url);
237	torben	1036
238
239	torben	1303	JsoupInvocation wrapper = new JsoupInvocation( new URL(url) , settings.getReplyTimeout() );
240	torben	1036	CircuitBreaker breaker = CircuitBreakerManager.getManager().getCircuitBreaker("banedk");
241
242			Document doc = (Document) breaker.invoke(wrapper);
243
244
245			boolean currentStation = false;
246			boolean currentStationSaved = false;
247
248			Elements tables = doc.getElementsByClass("Rute");
249
250			if (tables.size() == 1) {
251			Element timetable = tables.get(0);
252			Elements rows = timetable.getElementsByTag("tr");
253
254			for (int i=0; i<rows.size(); i++) {
255			if (i==0) //First row is column headers
256			continue;
257
258
259			Element row = rows.get(i);
260			Elements fields = row.getElementsByTag("td");
261
262
263			if (currentStationSaved == false && fields.get(0).attr("class").equalsIgnoreCase("Tidsstreg")) {
264			currentStation = true;
265			continue;
266			}
267
268	torben	1060	TimetableEntry entry = new TimetableEntry();
269	torben	1036
270	torben	1040	String station = DepartureFetcher.cleanText( fields.get(0).text() ) ;
271	torben	1406	station = correctStationName(station);
272
273	torben	1036
274	torben	1040	String arrival = DepartureFetcher.cleanText( fields.get(1).text() );
275			String departure = DepartureFetcher.cleanText( fields.get(2).text() );
276
277	torben	1060	entry.setStation( station );
278			entry.setArrival( arrival );
279			entry.setDeparture( departure );
280	torben	1036
281
282			if (currentStation == true && currentStationSaved == false ) {
283	torben	1060	entry.setCurrent(currentStation);
284	torben	1036	currentStationSaved = true;
285			}
286
287	torben	1417	entry.setStationEntry( getStation( station ));
288	torben	1036
289	torben	1060	timetableBean.entries.add(entry);
290	torben	1036	}
291
292			} else {
293			logger.warning("No time table found, trainID=" + trainID + " type=" + type);
294			}
295
296
297	torben	1060	return timetableBean;
298	torben	1036	}
299	torben	350
300			}