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.getUseAzureSite() == true ){
                        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;
        }

        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 = fields.get(0).text() ;
                        if (station.equals("København"))
                                station = "København H"; //correct inconsistency in naming
                        
                        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 {
                return new TimetableBean(); //dummy skeleton method
        }
        
        @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() ) ;
                        if (station.equals("København"))
                                station = "København H"; //correct inconsistency in naming
                        
                        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.getUseAzureSite() == true ){
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	TimetableBean lookupTimetableAzureSite(String trainID, String type) throws Exception {
85	TimetableBean timetableBean = new TimetableBean();
86
87
88	String url = "http://trafikinfo.bane.dk/TrafikInformation/Ruteplan/" + trainID;
89	logger.fine("URL:" + url);
90
91	JsoupInvocation wrapper = new JsoupInvocation( new URL(url) , settings.getReplyTimeout() );
92	CircuitBreaker breaker = CircuitBreakerManager.getManager().getCircuitBreaker("banedk");
93
94	Document doc = (Document) breaker.invoke(wrapper);
95
96
97	boolean currentStation = false;
98	boolean currentStationSaved = false;
99
100	Elements tables = doc.getElementsByClass("Rute");
101
102	if (tables.size() == 1) {
103	Element timetable = tables.get(0);
104	Elements rows = timetable.getElementsByTag("tr");
105
106	for (int i=0; i<rows.size(); i++) {
107	if (i==0) //First row is column headers
108	continue;
109
110
111	Element row = rows.get(i);
112	Elements fields = row.getElementsByTag("td");
113
114
115	if (currentStationSaved == false && fields.get(0).attr("class").equalsIgnoreCase("Tidsstreg")) {
116	currentStation = true;
117	continue;
118	}
119
120	TimetableEntry entry = new TimetableEntry();
121
122	String station = fields.get(0).text() ;
123	if (station.equals("København"))
124	station = "København H"; //correct inconsistency in naming
125
126	entry.setStation( station );
127	entry.setArrival( fields.get(1).text() );
128	entry.setDeparture( fields.get(2).text() );
129
130	boolean cancelled = fields.get(3).text().equalsIgnoreCase("aflyst");
131	entry.setCancelled(cancelled);
132
133	if (currentStation == true && currentStationSaved == false ) {
134	entry.setCurrent(currentStation);
135	currentStationSaved = true;
136	}
137
138	entry.setStationId( getStationId( station ));
139
140	timetableBean.entries.add(entry);
141	}
142
143	//TODO: There is an off-by-one error in this cancelled parser thingie
144	final String cancelledString = "Aflyst";
145	for (int i=0;i<timetableBean.entries.size(); i++) { //handle cancelled labels
146	final int lastIdx = (timetableBean.entries.size() - 1);
147
148	TimetableEntry current = timetableBean.entries.get(i);
149	if (current.isCancelled()) {
150	if (i == 0) {
151	current.setDeparture(cancelledString);
152	} else if (i == lastIdx) {
153	current.setArrival(cancelledString);
154	} else if (i>0 && i<lastIdx) {
155	TimetableEntry next = timetableBean.entries.get(i+1);
156	TimetableEntry prev = timetableBean.entries.get(i-1);
157
158	if (next.isCancelled())
159	current.setDeparture(cancelledString);
160	if (prev.isCancelled())
161	current.setArrival(cancelledString);
162	}
163	}
164	}
165
166	} else {
167	logger.warning("No time table found, trainID=" + trainID + " type=" + type);
168	}
169
170
171	return timetableBean;
172	}
173
174	TimetableBean lookupTimetableMobileSite(String trainID, String type) throws Exception {
175	return new TimetableBean(); //dummy skeleton method
176	}
177
178	@Deprecated
179	TimetableBean lookupTimetableWwwSite(String trainID, String type) throws Exception {
180	TimetableBean timetableBean = new TimetableBean();
181
182	String url = "http://www.bane.dk/visRute.asp?W=" + type + "&TogNr=" + trainID + "&artikelId=4276";
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
192	boolean currentStation = false;
193	boolean currentStationSaved = false;
194
195	Elements tables = doc.getElementsByClass("Rute");
196
197	if (tables.size() == 1) {
198	Element timetable = tables.get(0);
199	Elements rows = timetable.getElementsByTag("tr");
200
201	for (int i=0; i<rows.size(); i++) {
202	if (i==0) //First row is column headers
203	continue;
204
205
206	Element row = rows.get(i);
207	Elements fields = row.getElementsByTag("td");
208
209
210	if (currentStationSaved == false && fields.get(0).attr("class").equalsIgnoreCase("Tidsstreg")) {
211	currentStation = true;
212	continue;
213	}
214
215	TimetableEntry entry = new TimetableEntry();
216
217	String station = DepartureFetcher.cleanText( fields.get(0).text() ) ;
218	if (station.equals("København"))
219	station = "København H"; //correct inconsistency in naming
220
221	String arrival = DepartureFetcher.cleanText( fields.get(1).text() );
222	String departure = DepartureFetcher.cleanText( fields.get(2).text() );
223
224	entry.setStation( station );
225	entry.setArrival( arrival );
226	entry.setDeparture( departure );
227
228
229	if (currentStation == true && currentStationSaved == false ) {
230	entry.setCurrent(currentStation);
231	currentStationSaved = true;
232	}
233
234	entry.setStationId( getStationId( station ));
235
236	timetableBean.entries.add(entry);
237	}
238
239	} else {
240	logger.warning("No time table found, trainID=" + trainID + " type=" + type);
241	}
242
243
244	return timetableBean;
245	}
246
247	}