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.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, Integer> 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,Integer>( 3*60*60*1000 );
        }
        
        
        TimetableBean cachedLookupTimetable(String trainID, String type) throws Exception {
                String key = trainID+type;
                TimetableBean list = cache.get(key);
                list = null; //TODO: DEBUG
                
                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);
                }
        }
        
        int getStationId(String name) {
                Integer id = stationCache.get(name);
                
                if (id == null) {
                        try {
                                id = stationDao.getIdByName(name);
                                stationCache.put(name, id);
                        } catch (SQLException e) {
                                logger.log(Level.SEVERE, "getStationId failed", e);
                                id = -1;
                        }
                } 

                return id;
        }
        
        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.setStationId( getStationId( 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.setStationId( getStationId( 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.setStationId( getStationId( 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	1061	import dk.thoerup.android.traininfo.common.TimetableBean;
16			import dk.thoerup.android.traininfo.common.TimetableEntry;
17	torben	468	import dk.thoerup.circuitbreaker.CircuitBreaker;
18			import dk.thoerup.circuitbreaker.CircuitBreakerManager;
19	torben	1355	import dk.thoerup.genericjavautils.TimeoutMap;
20	torben	711	import dk.thoerup.traininfoservice.Statistics;
21	torben	1303	import dk.thoerup.traininfoservice.TraininfoSettings;
22	torben	1255	import dk.thoerup.traininfoservice.db.StationDAO;
23	torben	421
24	torben	350	public class TimetableFetcher {
25	torben	992
26	torben	350
27	torben	1060	Map<String, TimetableBean> cache;
28	torben	836	Map<String, Integer> stationCache;
29
30			StationDAO stationDao = new StationDAO();
31	torben	350
32	torben	387
33	torben	350	Logger logger = Logger.getLogger(TimetableFetcher.class.getName());
34	torben	1303
35			TraininfoSettings settings;
36	torben	387
37	torben	1303	public TimetableFetcher(TraininfoSettings settings) {
38			this.settings = settings;
39	torben	584
40	torben	1303	cache = new TimeoutMap<String,TimetableBean>( settings.getCacheTimeout() );
41	torben	836	stationCache = new TimeoutMap<String,Integer>( 36060*1000 );
42	torben	581	}
43
44
45	torben	1060	TimetableBean cachedLookupTimetable(String trainID, String type) throws Exception {
46	torben	387	String key = trainID+type;
47	torben	1060	TimetableBean list = cache.get(key);
48	torben	1367	list = null; //TODO: DEBUG
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			int getStationId(String name) {
70			Integer id = stationCache.get(name);
71
72			if (id == null) {
73			try {
74	torben	842	id = stationDao.getIdByName(name);
75	torben	836	stationCache.put(name, id);
76			} catch (SQLException e) {
77			logger.log(Level.SEVERE, "getStationId failed", e);
78			id = -1;
79			}
80			}
81	torben	350
82	torben	836	return id;
83			}
84	torben	1406
85			String correctStationName(String name) {
86			if (name.equals("København"))
87			name = "København H"; //correct inconsistency in naming
88
89			return name;
90			}
91	torben	836
92	torben	1060	TimetableBean lookupTimetableAzureSite(String trainID, String type) throws Exception {
93			TimetableBean timetableBean = new TimetableBean();
94	torben	350
95	torben	1048
96	torben	970	String url = "http://trafikinfo.bane.dk/TrafikInformation/Ruteplan/" + trainID;
97	torben	1048	logger.fine("URL:" + url);
98	torben	350
99	torben	1303	JsoupInvocation wrapper = new JsoupInvocation( new URL(url) , settings.getReplyTimeout() );
100	torben	421	CircuitBreaker breaker = CircuitBreakerManager.getManager().getCircuitBreaker("banedk");
101	torben	350
102	torben	992	Document doc = (Document) breaker.invoke(wrapper);
103	torben	421
104	torben	350
105			boolean currentStation = false;
106			boolean currentStationSaved = false;
107
108	torben	992	Elements tables = doc.getElementsByClass("Rute");
109
110	torben	350	if (tables.size() == 1) {
111	torben	992	Element timetable = tables.get(0);
112			Elements rows = timetable.getElementsByTag("tr");
113	torben	350
114			for (int i=0; i<rows.size(); i++) {
115			if (i==0) //First row is column headers
116			continue;
117
118
119	torben	992	Element row = rows.get(i);
120			Elements fields = row.getElementsByTag("td");
121
122	torben	350
123	torben	992	if (currentStationSaved == false && fields.get(0).attr("class").equalsIgnoreCase("Tidsstreg")) {
124	torben	350	currentStation = true;
125			continue;
126			}
127
128	torben	1060	TimetableEntry entry = new TimetableEntry();
129	torben	836
130	torben	1406	String station = correctStationName( fields.get(0).text() );
131	torben	836
132	torben	1060	entry.setStation( station );
133			entry.setArrival( fields.get(1).text() );
134			entry.setDeparture( fields.get(2).text() );
135	torben	350
136	torben	992	boolean cancelled = fields.get(3).text().equalsIgnoreCase("aflyst");
137	torben	1060	entry.setCancelled(cancelled);
138	torben	975
139	torben	350	if (currentStation == true && currentStationSaved == false ) {
140	torben	1060	entry.setCurrent(currentStation);
141	torben	350	currentStationSaved = true;
142			}
143
144	torben	1060	entry.setStationId( getStationId( station ));
145	torben	836
146	torben	1060	timetableBean.entries.add(entry);
147	torben	350	}
148
149	torben	977	//TODO: There is an off-by-one error in this cancelled parser thingie
150	torben	975	final String cancelledString = "Aflyst";
151	torben	1060	for (int i=0;i<timetableBean.entries.size(); i++) { //handle cancelled labels
152			final int lastIdx = (timetableBean.entries.size() - 1);
153	torben	975
154	torben	1060	TimetableEntry current = timetableBean.entries.get(i);
155	torben	976	if (current.isCancelled()) {
156			if (i == 0) {
157			current.setDeparture(cancelledString);
158			} else if (i == lastIdx) {
159			current.setArrival(cancelledString);
160			} else if (i>0 && i<lastIdx) {
161	torben	1060	TimetableEntry next = timetableBean.entries.get(i+1);
162			TimetableEntry prev = timetableBean.entries.get(i-1);
163	torben	976
164			if (next.isCancelled())
165			current.setDeparture(cancelledString);
166			if (prev.isCancelled())
167			current.setArrival(cancelledString);
168			}
169	torben	975	}
170			}
171
172	torben	350	} else {
173			logger.warning("No time table found, trainID=" + trainID + " type=" + type);
174			}
175	torben	992
176	torben	350
177	torben	1060	return timetableBean;
178	torben	350	}
179	torben	1036
180	torben	1331	TimetableBean lookupTimetableMobileSite(String trainID, String type) throws Exception {
181	torben	1367	TimetableBean timetableBean = new TimetableBean();
182
183			String url = "http://mobil.bane.dk/mobilStation.asp?artikelID=5332&tognummer=" + trainID + "&webprofil=" + type + "&mode=rute";
184			logger.fine("URL:" + url);
185
186
187			JsoupInvocation wrapper = new JsoupInvocation( new URL(url) , settings.getReplyTimeout() );
188			CircuitBreaker breaker = CircuitBreakerManager.getManager().getCircuitBreaker("banedk");
189
190			Document doc = (Document) breaker.invoke(wrapper);
191
192			Element content = doc.getElementsByClass("contentDiv").get(1);
193			Element dlist = content.child(0);
194
195
196			Elements rows = dlist.getElementsByTag("dt");
197
198			for (int i=0; i<rows.size(); i++) {
199
200			Element row = rows.get(i);
201
202	torben	1368	logger.fine( row.text() );
203	torben	1367
204			String parts[] = row.text().split(",");
205
206			TimetableEntry entry = new TimetableEntry();
207
208			String station = DepartureFetcher.cleanText( parts[0] ) ;
209	torben	1406	station = correctStationName(station);
210	torben	1367
211	torben	1406
212	torben	1367	String arrival = DepartureFetcher.cleanText( parts[1] );
213			String departure = DepartureFetcher.cleanText( "" );
214
215			entry.setStation( station );
216			entry.setArrival( arrival );
217			entry.setDeparture( departure );
218
219
220			entry.setStationId( getStationId( station ));
221
222			timetableBean.entries.add(entry);
223			}
224
225
226			return timetableBean;
227
228	torben	1331	}
229
230			@Deprecated
231	torben	1060	TimetableBean lookupTimetableWwwSite(String trainID, String type) throws Exception {
232			TimetableBean timetableBean = new TimetableBean();
233	torben	1036
234			String url = "http://www.bane.dk/visRute.asp?W=" + type + "&TogNr=" + trainID + "&artikelId=4276";
235	torben	1048	logger.fine("URL:" + url);
236	torben	1036
237
238	torben	1303	JsoupInvocation wrapper = new JsoupInvocation( new URL(url) , settings.getReplyTimeout() );
239	torben	1036	CircuitBreaker breaker = CircuitBreakerManager.getManager().getCircuitBreaker("banedk");
240
241			Document doc = (Document) breaker.invoke(wrapper);
242
243
244			boolean currentStation = false;
245			boolean currentStationSaved = false;
246
247			Elements tables = doc.getElementsByClass("Rute");
248
249			if (tables.size() == 1) {
250			Element timetable = tables.get(0);
251			Elements rows = timetable.getElementsByTag("tr");
252
253			for (int i=0; i<rows.size(); i++) {
254			if (i==0) //First row is column headers
255			continue;
256
257
258			Element row = rows.get(i);
259			Elements fields = row.getElementsByTag("td");
260
261
262			if (currentStationSaved == false && fields.get(0).attr("class").equalsIgnoreCase("Tidsstreg")) {
263			currentStation = true;
264			continue;
265			}
266
267	torben	1060	TimetableEntry entry = new TimetableEntry();
268	torben	1036
269	torben	1040	String station = DepartureFetcher.cleanText( fields.get(0).text() ) ;
270	torben	1406	station = correctStationName(station);
271
272	torben	1036
273	torben	1040	String arrival = DepartureFetcher.cleanText( fields.get(1).text() );
274			String departure = DepartureFetcher.cleanText( fields.get(2).text() );
275
276	torben	1060	entry.setStation( station );
277			entry.setArrival( arrival );
278			entry.setDeparture( departure );
279	torben	1036
280
281			if (currentStation == true && currentStationSaved == false ) {
282	torben	1060	entry.setCurrent(currentStation);
283	torben	1036	currentStationSaved = true;
284			}
285
286	torben	1060	entry.setStationId( getStationId( station ));
287	torben	1036
288	torben	1060	timetableBean.entries.add(entry);
289	torben	1036	}
290
291			} else {
292			logger.warning("No time table found, trainID=" + trainID + " type=" + type);
293			}
294
295
296	torben	1060	return timetableBean;
297	torben	1036	}
298	torben	350
299			}