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.StationBean;
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.StationBean;
16			import dk.thoerup.android.traininfo.common.StationEntry;
17	torben	1061	import dk.thoerup.android.traininfo.common.TimetableBean;
18			import dk.thoerup.android.traininfo.common.TimetableEntry;
19	torben	468	import dk.thoerup.circuitbreaker.CircuitBreaker;
20			import dk.thoerup.circuitbreaker.CircuitBreakerManager;
21	torben	1355	import dk.thoerup.genericjavautils.TimeoutMap;
22	torben	711	import dk.thoerup.traininfoservice.Statistics;
23	torben	1303	import dk.thoerup.traininfoservice.TraininfoSettings;
24	torben	1255	import dk.thoerup.traininfoservice.db.StationDAO;
25	torben	421
26	torben	350	public class TimetableFetcher {
27	torben	992
28	torben	350
29	torben	1060	Map<String, TimetableBean> cache;
30	torben	1411	Map<String, StationEntry> stationCache;
31	torben	836
32			StationDAO stationDao = new StationDAO();
33	torben	350
34	torben	387
35	torben	350	Logger logger = Logger.getLogger(TimetableFetcher.class.getName());
36	torben	1303
37			TraininfoSettings settings;
38	torben	387
39	torben	1303	public TimetableFetcher(TraininfoSettings settings) {
40			this.settings = settings;
41	torben	584
42	torben	1303	cache = new TimeoutMap<String,TimetableBean>( settings.getCacheTimeout() );
43	torben	1411	stationCache = new TimeoutMap<String,StationEntry>( 36060*1000 );
44	torben	581	}
45
46
47	torben	1060	TimetableBean cachedLookupTimetable(String trainID, String type) throws Exception {
48	torben	387	String key = trainID+type;
49	torben	1060	TimetableBean list = cache.get(key);
50	torben	387
51			if (list == null) {
52			list = lookupTimetable(trainID,type);
53			cache.put(key, list);
54			} else {
55	torben	711	Statistics.getInstance().incrementTimetableCacheHits();
56	torben	389	logger.info("Timetable: Cache hit " + trainID);
57	torben	387	}
58			return list;
59			}
60	torben	581
61	torben	1060	TimetableBean lookupTimetable(String trainID, String type) throws Exception {
62	torben	1372	if (settings.getBackend() == TraininfoSettings.Backend.Azure ){
63	torben	1036	return lookupTimetableAzureSite(trainID, type);
64
65	torben	581	} else {
66	torben	1331	return lookupTimetableMobileSite(trainID, type);
67	torben	581	}
68			}
69	torben	836
70	torben	1417	StationEntry getStation(String name) {
71	torben	1411	StationEntry station = stationCache.get(name);
72	torben	836
73	torben	1411	if (station == null) {
74	torben	836	try {
75	torben	1417	station = stationDao.getSimpleByName(name);
76			if (station != null) {
77	torben	1411	stationCache.put(name,station);
78			}
79	torben	836	} catch (SQLException e) {
80			logger.log(Level.SEVERE, "getStationId failed", e);
81			}
82			}
83	torben	350
84	torben	1411	return station;
85	torben	836	}
86	torben	1406
87			String correctStationName(String name) {
88			if (name.equals("København"))
89			name = "København H"; //correct inconsistency in naming
90
91			return name;
92			}
93	torben	836
94	torben	1060	TimetableBean lookupTimetableAzureSite(String trainID, String type) throws Exception {
95			TimetableBean timetableBean = new TimetableBean();
96	torben	350
97	torben	1048
98	torben	970	String url = "http://trafikinfo.bane.dk/TrafikInformation/Ruteplan/" + trainID;
99	torben	1048	logger.fine("URL:" + url);
100	torben	350
101	torben	1303	JsoupInvocation wrapper = new JsoupInvocation( new URL(url) , settings.getReplyTimeout() );
102	torben	421	CircuitBreaker breaker = CircuitBreakerManager.getManager().getCircuitBreaker("banedk");
103	torben	350
104	torben	992	Document doc = (Document) breaker.invoke(wrapper);
105	torben	421
106	torben	350
107			boolean currentStation = false;
108			boolean currentStationSaved = false;
109
110	torben	992	Elements tables = doc.getElementsByClass("Rute");
111
112	torben	350	if (tables.size() == 1) {
113	torben	992	Element timetable = tables.get(0);
114			Elements rows = timetable.getElementsByTag("tr");
115	torben	350
116			for (int i=0; i<rows.size(); i++) {
117			if (i==0) //First row is column headers
118			continue;
119
120
121	torben	992	Element row = rows.get(i);
122			Elements fields = row.getElementsByTag("td");
123
124	torben	350
125	torben	992	if (currentStationSaved == false && fields.get(0).attr("class").equalsIgnoreCase("Tidsstreg")) {
126	torben	350	currentStation = true;
127			continue;
128			}
129
130	torben	1060	TimetableEntry entry = new TimetableEntry();
131	torben	836
132	torben	1406	String station = correctStationName( fields.get(0).text() );
133	torben	836
134	torben	1060	entry.setStation( station );
135			entry.setArrival( fields.get(1).text() );
136			entry.setDeparture( fields.get(2).text() );
137	torben	350
138	torben	992	boolean cancelled = fields.get(3).text().equalsIgnoreCase("aflyst");
139	torben	1060	entry.setCancelled(cancelled);
140	torben	975
141	torben	350	if (currentStation == true && currentStationSaved == false ) {
142	torben	1060	entry.setCurrent(currentStation);
143	torben	350	currentStationSaved = true;
144			}
145
146	torben	1417	entry.setStationEntry( getStation( station ));
147	torben	836
148	torben	1060	timetableBean.entries.add(entry);
149	torben	350	}
150
151	torben	977	//TODO: There is an off-by-one error in this cancelled parser thingie
152	torben	975	final String cancelledString = "Aflyst";
153	torben	1060	for (int i=0;i<timetableBean.entries.size(); i++) { //handle cancelled labels
154			final int lastIdx = (timetableBean.entries.size() - 1);
155	torben	975
156	torben	1060	TimetableEntry current = timetableBean.entries.get(i);
157	torben	976	if (current.isCancelled()) {
158			if (i == 0) {
159			current.setDeparture(cancelledString);
160			} else if (i == lastIdx) {
161			current.setArrival(cancelledString);
162			} else if (i>0 && i<lastIdx) {
163	torben	1060	TimetableEntry next = timetableBean.entries.get(i+1);
164			TimetableEntry prev = timetableBean.entries.get(i-1);
165	torben	976
166			if (next.isCancelled())
167			current.setDeparture(cancelledString);
168			if (prev.isCancelled())
169			current.setArrival(cancelledString);
170			}
171	torben	975	}
172			}
173
174	torben	350	} else {
175			logger.warning("No time table found, trainID=" + trainID + " type=" + type);
176			}
177	torben	992
178	torben	350
179	torben	1060	return timetableBean;
180	torben	350	}
181	torben	1036
182	torben	1331	TimetableBean lookupTimetableMobileSite(String trainID, String type) throws Exception {
183	torben	1367	TimetableBean timetableBean = new TimetableBean();
184
185			String url = "http://mobil.bane.dk/mobilStation.asp?artikelID=5332&tognummer=" + trainID + "&webprofil=" + type + "&mode=rute";
186			logger.fine("URL:" + url);
187
188
189			JsoupInvocation wrapper = new JsoupInvocation( new URL(url) , settings.getReplyTimeout() );
190			CircuitBreaker breaker = CircuitBreakerManager.getManager().getCircuitBreaker("banedk");
191
192			Document doc = (Document) breaker.invoke(wrapper);
193
194			Element content = doc.getElementsByClass("contentDiv").get(1);
195			Element dlist = content.child(0);
196
197
198			Elements rows = dlist.getElementsByTag("dt");
199
200			for (int i=0; i<rows.size(); i++) {
201
202			Element row = rows.get(i);
203
204	torben	1368	logger.fine( row.text() );
205	torben	1367
206			String parts[] = row.text().split(",");
207
208			TimetableEntry entry = new TimetableEntry();
209
210			String station = DepartureFetcher.cleanText( parts[0] ) ;
211	torben	1406	station = correctStationName(station);
212	torben	1367
213	torben	1406
214	torben	1367	String arrival = DepartureFetcher.cleanText( parts[1] );
215			String departure = DepartureFetcher.cleanText( "" );
216
217			entry.setStation( station );
218			entry.setArrival( arrival );
219			entry.setDeparture( departure );
220
221
222	torben	1417	entry.setStationEntry( getStation( station ));
223	torben	1367
224			timetableBean.entries.add(entry);
225			}
226
227
228			return timetableBean;
229
230	torben	1331	}
231
232			@Deprecated
233	torben	1060	TimetableBean lookupTimetableWwwSite(String trainID, String type) throws Exception {
234			TimetableBean timetableBean = new TimetableBean();
235	torben	1036
236			String url = "http://www.bane.dk/visRute.asp?W=" + type + "&TogNr=" + trainID + "&artikelId=4276";
237	torben	1048	logger.fine("URL:" + url);
238	torben	1036
239
240	torben	1303	JsoupInvocation wrapper = new JsoupInvocation( new URL(url) , settings.getReplyTimeout() );
241	torben	1036	CircuitBreaker breaker = CircuitBreakerManager.getManager().getCircuitBreaker("banedk");
242
243			Document doc = (Document) breaker.invoke(wrapper);
244
245
246			boolean currentStation = false;
247			boolean currentStationSaved = false;
248
249			Elements tables = doc.getElementsByClass("Rute");
250
251			if (tables.size() == 1) {
252			Element timetable = tables.get(0);
253			Elements rows = timetable.getElementsByTag("tr");
254
255			for (int i=0; i<rows.size(); i++) {
256			if (i==0) //First row is column headers
257			continue;
258
259
260			Element row = rows.get(i);
261			Elements fields = row.getElementsByTag("td");
262
263
264			if (currentStationSaved == false && fields.get(0).attr("class").equalsIgnoreCase("Tidsstreg")) {
265			currentStation = true;
266			continue;
267			}
268
269	torben	1060	TimetableEntry entry = new TimetableEntry();
270	torben	1036
271	torben	1040	String station = DepartureFetcher.cleanText( fields.get(0).text() ) ;
272	torben	1406	station = correctStationName(station);
273
274	torben	1036
275	torben	1040	String arrival = DepartureFetcher.cleanText( fields.get(1).text() );
276			String departure = DepartureFetcher.cleanText( fields.get(2).text() );
277
278	torben	1060	entry.setStation( station );
279			entry.setArrival( arrival );
280			entry.setDeparture( departure );
281	torben	1036
282
283			if (currentStation == true && currentStationSaved == false ) {
284	torben	1060	entry.setCurrent(currentStation);
285	torben	1036	currentStationSaved = true;
286			}
287
288	torben	1417	entry.setStationEntry( getStation( station ));
289	torben	1036
290	torben	1060	timetableBean.entries.add(entry);
291	torben	1036	}
292
293			} else {
294			logger.warning("No time table found, trainID=" + trainID + " type=" + type);
295			}
296
297
298	torben	1060	return timetableBean;
299	torben	1036	}
300	torben	350
301			}