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	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	list = null; //TODO: DEBUG
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	int getStationId(String name) {
70	Integer id = stationCache.get(name);
71
72	if (id == null) {
73	try {
74	id = stationDao.getIdByName(name);
75	stationCache.put(name, id);
76	} catch (SQLException e) {
77	logger.log(Level.SEVERE, "getStationId failed", e);
78	id = -1;
79	}
80	}
81
82	return id;
83	}
84
85	String correctStationName(String name) {
86	if (name.equals("København"))
87	name = "København H"; //correct inconsistency in naming
88
89	return name;
90	}
91
92	TimetableBean lookupTimetableAzureSite(String trainID, String type) throws Exception {
93	TimetableBean timetableBean = new TimetableBean();
94
95
96	String url = "http://trafikinfo.bane.dk/TrafikInformation/Ruteplan/" + trainID;
97	logger.fine("URL:" + url);
98
99	JsoupInvocation wrapper = new JsoupInvocation( new URL(url) , settings.getReplyTimeout() );
100	CircuitBreaker breaker = CircuitBreakerManager.getManager().getCircuitBreaker("banedk");
101
102	Document doc = (Document) breaker.invoke(wrapper);
103
104
105	boolean currentStation = false;
106	boolean currentStationSaved = false;
107
108	Elements tables = doc.getElementsByClass("Rute");
109
110	if (tables.size() == 1) {
111	Element timetable = tables.get(0);
112	Elements rows = timetable.getElementsByTag("tr");
113
114	for (int i=0; i<rows.size(); i++) {
115	if (i==0) //First row is column headers
116	continue;
117
118
119	Element row = rows.get(i);
120	Elements fields = row.getElementsByTag("td");
121
122
123	if (currentStationSaved == false && fields.get(0).attr("class").equalsIgnoreCase("Tidsstreg")) {
124	currentStation = true;
125	continue;
126	}
127
128	TimetableEntry entry = new TimetableEntry();
129
130	String station = correctStationName( fields.get(0).text() );
131
132	entry.setStation( station );
133	entry.setArrival( fields.get(1).text() );
134	entry.setDeparture( fields.get(2).text() );
135
136	boolean cancelled = fields.get(3).text().equalsIgnoreCase("aflyst");
137	entry.setCancelled(cancelled);
138
139	if (currentStation == true && currentStationSaved == false ) {
140	entry.setCurrent(currentStation);
141	currentStationSaved = true;
142	}
143
144	entry.setStationId( getStationId( station ));
145
146	timetableBean.entries.add(entry);
147	}
148
149	//TODO: There is an off-by-one error in this cancelled parser thingie
150	final String cancelledString = "Aflyst";
151	for (int i=0;i<timetableBean.entries.size(); i++) { //handle cancelled labels
152	final int lastIdx = (timetableBean.entries.size() - 1);
153
154	TimetableEntry current = timetableBean.entries.get(i);
155	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	TimetableEntry next = timetableBean.entries.get(i+1);
162	TimetableEntry prev = timetableBean.entries.get(i-1);
163
164	if (next.isCancelled())
165	current.setDeparture(cancelledString);
166	if (prev.isCancelled())
167	current.setArrival(cancelledString);
168	}
169	}
170	}
171
172	} else {
173	logger.warning("No time table found, trainID=" + trainID + " type=" + type);
174	}
175
176
177	return timetableBean;
178	}
179
180	TimetableBean lookupTimetableMobileSite(String trainID, String type) throws Exception {
181	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	logger.fine( row.text() );
203
204	String parts[] = row.text().split(",");
205
206	TimetableEntry entry = new TimetableEntry();
207
208	String station = DepartureFetcher.cleanText( parts[0] ) ;
209	station = correctStationName(station);
210
211
212	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	}
229
230	@Deprecated
231	TimetableBean lookupTimetableWwwSite(String trainID, String type) throws Exception {
232	TimetableBean timetableBean = new TimetableBean();
233
234	String url = "http://www.bane.dk/visRute.asp?W=" + type + "&TogNr=" + trainID + "&artikelId=4276";
235	logger.fine("URL:" + url);
236
237
238	JsoupInvocation wrapper = new JsoupInvocation( new URL(url) , settings.getReplyTimeout() );
239	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	TimetableEntry entry = new TimetableEntry();
268
269	String station = DepartureFetcher.cleanText( fields.get(0).text() ) ;
270	station = correctStationName(station);
271
272
273	String arrival = DepartureFetcher.cleanText( fields.get(1).text() );
274	String departure = DepartureFetcher.cleanText( fields.get(2).text() );
275
276	entry.setStation( station );
277	entry.setArrival( arrival );
278	entry.setDeparture( departure );
279
280
281	if (currentStation == true && currentStationSaved == false ) {
282	entry.setCurrent(currentStation);
283	currentStationSaved = true;
284	}
285
286	entry.setStationId( getStationId( station ));
287
288	timetableBean.entries.add(entry);
289	}
290
291	} else {
292	logger.warning("No time table found, trainID=" + trainID + " type=" + type);
293	}
294
295
296	return timetableBean;
297	}
298
299	}