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