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