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 |
468 |
import dk.thoerup.circuitbreaker.CircuitBreaker; |
16 |
|
|
import dk.thoerup.circuitbreaker.CircuitBreakerManager; |
17 |
torben |
836 |
import dk.thoerup.traininfoservice.StationDAO; |
18 |
torben |
711 |
import dk.thoerup.traininfoservice.Statistics; |
19 |
torben |
421 |
|
20 |
torben |
350 |
public class TimetableFetcher { |
21 |
torben |
992 |
|
22 |
torben |
350 |
|
23 |
torben |
1060 |
Map<String, TimetableBean> cache; |
24 |
torben |
836 |
Map<String, Integer> stationCache; |
25 |
|
|
|
26 |
|
|
StationDAO stationDao = new StationDAO(); |
27 |
torben |
350 |
|
28 |
torben |
387 |
|
29 |
torben |
350 |
Logger logger = Logger.getLogger(TimetableFetcher.class.getName()); |
30 |
torben |
387 |
|
31 |
torben |
1036 |
private boolean useAzureSite; |
32 |
torben |
1026 |
private int replyTimeout; |
33 |
torben |
387 |
|
34 |
torben |
1036 |
public TimetableFetcher(boolean azureSite, int cacheTimeout, int replyTimeout) { |
35 |
|
|
useAzureSite = azureSite; |
36 |
torben |
1026 |
this.replyTimeout = replyTimeout; |
37 |
torben |
584 |
|
38 |
torben |
1060 |
cache = new TimeoutMap<String,TimetableBean>(cacheTimeout); |
39 |
torben |
836 |
stationCache = new TimeoutMap<String,Integer>( 3*60*60*1000 ); |
40 |
torben |
581 |
} |
41 |
|
|
|
42 |
|
|
|
43 |
torben |
1060 |
TimetableBean cachedLookupTimetable(String trainID, String type) throws Exception { |
44 |
torben |
387 |
String key = trainID+type; |
45 |
torben |
1060 |
TimetableBean list = cache.get(key); |
46 |
torben |
387 |
|
47 |
|
|
if (list == null) { |
48 |
|
|
list = lookupTimetable(trainID,type); |
49 |
|
|
cache.put(key, list); |
50 |
|
|
} else { |
51 |
torben |
711 |
Statistics.getInstance().incrementTimetableCacheHits(); |
52 |
torben |
389 |
logger.info("Timetable: Cache hit " + trainID); |
53 |
torben |
387 |
} |
54 |
|
|
return list; |
55 |
|
|
} |
56 |
torben |
581 |
|
57 |
torben |
1060 |
TimetableBean lookupTimetable(String trainID, String type) throws Exception { |
58 |
torben |
1036 |
if (useAzureSite == true ){ |
59 |
|
|
return lookupTimetableAzureSite(trainID, type); |
60 |
|
|
|
61 |
torben |
581 |
} else { |
62 |
torben |
1036 |
return lookupTimetableWwwSite(trainID, type); |
63 |
torben |
581 |
} |
64 |
|
|
} |
65 |
torben |
836 |
|
66 |
|
|
int getStationId(String name) { |
67 |
|
|
Integer id = stationCache.get(name); |
68 |
|
|
|
69 |
|
|
if (id == null) { |
70 |
|
|
try { |
71 |
torben |
842 |
id = stationDao.getIdByName(name); |
72 |
torben |
836 |
stationCache.put(name, id); |
73 |
|
|
} catch (SQLException e) { |
74 |
|
|
logger.log(Level.SEVERE, "getStationId failed", e); |
75 |
|
|
id = -1; |
76 |
|
|
} |
77 |
|
|
} |
78 |
torben |
350 |
|
79 |
torben |
836 |
return id; |
80 |
|
|
} |
81 |
|
|
|
82 |
torben |
1060 |
TimetableBean lookupTimetableAzureSite(String trainID, String type) throws Exception { |
83 |
|
|
TimetableBean timetableBean = new TimetableBean(); |
84 |
torben |
350 |
|
85 |
torben |
1048 |
|
86 |
torben |
970 |
String url = "http://trafikinfo.bane.dk/TrafikInformation/Ruteplan/" + trainID; |
87 |
torben |
1048 |
logger.fine("URL:" + url); |
88 |
torben |
350 |
|
89 |
torben |
1026 |
JsoupInvocation wrapper = new JsoupInvocation( new URL(url) , replyTimeout); |
90 |
torben |
421 |
CircuitBreaker breaker = CircuitBreakerManager.getManager().getCircuitBreaker("banedk"); |
91 |
torben |
350 |
|
92 |
torben |
992 |
Document doc = (Document) breaker.invoke(wrapper); |
93 |
torben |
421 |
|
94 |
torben |
350 |
|
95 |
|
|
boolean currentStation = false; |
96 |
|
|
boolean currentStationSaved = false; |
97 |
|
|
|
98 |
torben |
992 |
Elements tables = doc.getElementsByClass("Rute"); |
99 |
|
|
|
100 |
torben |
350 |
if (tables.size() == 1) { |
101 |
torben |
992 |
Element timetable = tables.get(0); |
102 |
|
|
Elements rows = timetable.getElementsByTag("tr"); |
103 |
torben |
350 |
|
104 |
|
|
for (int i=0; i<rows.size(); i++) { |
105 |
|
|
if (i==0) //First row is column headers |
106 |
|
|
continue; |
107 |
|
|
|
108 |
|
|
|
109 |
torben |
992 |
Element row = rows.get(i); |
110 |
|
|
Elements fields = row.getElementsByTag("td"); |
111 |
|
|
|
112 |
torben |
350 |
|
113 |
torben |
992 |
if (currentStationSaved == false && fields.get(0).attr("class").equalsIgnoreCase("Tidsstreg")) { |
114 |
torben |
350 |
currentStation = true; |
115 |
|
|
continue; |
116 |
|
|
} |
117 |
|
|
|
118 |
torben |
1060 |
TimetableEntry entry = new TimetableEntry(); |
119 |
torben |
836 |
|
120 |
torben |
992 |
String station = fields.get(0).text() ; |
121 |
torben |
836 |
if (station.equals("København")) |
122 |
|
|
station = "København H"; //correct inconsistency in naming |
123 |
|
|
|
124 |
torben |
1060 |
entry.setStation( station ); |
125 |
|
|
entry.setArrival( fields.get(1).text() ); |
126 |
|
|
entry.setDeparture( fields.get(2).text() ); |
127 |
torben |
350 |
|
128 |
torben |
992 |
boolean cancelled = fields.get(3).text().equalsIgnoreCase("aflyst"); |
129 |
torben |
1060 |
entry.setCancelled(cancelled); |
130 |
torben |
975 |
|
131 |
torben |
350 |
if (currentStation == true && currentStationSaved == false ) { |
132 |
torben |
1060 |
entry.setCurrent(currentStation); |
133 |
torben |
350 |
currentStationSaved = true; |
134 |
|
|
} |
135 |
|
|
|
136 |
torben |
1060 |
entry.setStationId( getStationId( station )); |
137 |
torben |
836 |
|
138 |
torben |
1060 |
timetableBean.entries.add(entry); |
139 |
torben |
350 |
} |
140 |
|
|
|
141 |
torben |
977 |
//TODO: There is an off-by-one error in this cancelled parser thingie |
142 |
torben |
975 |
final String cancelledString = "Aflyst"; |
143 |
torben |
1060 |
for (int i=0;i<timetableBean.entries.size(); i++) { //handle cancelled labels |
144 |
|
|
final int lastIdx = (timetableBean.entries.size() - 1); |
145 |
torben |
975 |
|
146 |
torben |
1060 |
TimetableEntry current = timetableBean.entries.get(i); |
147 |
torben |
976 |
if (current.isCancelled()) { |
148 |
|
|
if (i == 0) { |
149 |
|
|
current.setDeparture(cancelledString); |
150 |
|
|
} else if (i == lastIdx) { |
151 |
|
|
current.setArrival(cancelledString); |
152 |
|
|
} else if (i>0 && i<lastIdx) { |
153 |
torben |
1060 |
TimetableEntry next = timetableBean.entries.get(i+1); |
154 |
|
|
TimetableEntry prev = timetableBean.entries.get(i-1); |
155 |
torben |
976 |
|
156 |
|
|
if (next.isCancelled()) |
157 |
|
|
current.setDeparture(cancelledString); |
158 |
|
|
if (prev.isCancelled()) |
159 |
|
|
current.setArrival(cancelledString); |
160 |
|
|
} |
161 |
torben |
975 |
} |
162 |
|
|
} |
163 |
|
|
|
164 |
torben |
350 |
} else { |
165 |
|
|
logger.warning("No time table found, trainID=" + trainID + " type=" + type); |
166 |
|
|
} |
167 |
torben |
992 |
|
168 |
torben |
350 |
|
169 |
torben |
1060 |
return timetableBean; |
170 |
torben |
350 |
} |
171 |
torben |
1036 |
|
172 |
torben |
1060 |
TimetableBean lookupTimetableWwwSite(String trainID, String type) throws Exception { |
173 |
|
|
TimetableBean timetableBean = new TimetableBean(); |
174 |
torben |
1036 |
|
175 |
|
|
String url = "http://www.bane.dk/visRute.asp?W=" + type + "&TogNr=" + trainID + "&artikelId=4276"; |
176 |
torben |
1048 |
logger.fine("URL:" + url); |
177 |
torben |
1036 |
|
178 |
|
|
|
179 |
|
|
JsoupInvocation wrapper = new JsoupInvocation( new URL(url) , replyTimeout); |
180 |
|
|
CircuitBreaker breaker = CircuitBreakerManager.getManager().getCircuitBreaker("banedk"); |
181 |
|
|
|
182 |
|
|
Document doc = (Document) breaker.invoke(wrapper); |
183 |
|
|
|
184 |
|
|
|
185 |
|
|
boolean currentStation = false; |
186 |
|
|
boolean currentStationSaved = false; |
187 |
|
|
|
188 |
|
|
Elements tables = doc.getElementsByClass("Rute"); |
189 |
|
|
|
190 |
|
|
if (tables.size() == 1) { |
191 |
|
|
Element timetable = tables.get(0); |
192 |
|
|
Elements rows = timetable.getElementsByTag("tr"); |
193 |
|
|
|
194 |
|
|
for (int i=0; i<rows.size(); i++) { |
195 |
|
|
if (i==0) //First row is column headers |
196 |
|
|
continue; |
197 |
|
|
|
198 |
|
|
|
199 |
|
|
Element row = rows.get(i); |
200 |
|
|
Elements fields = row.getElementsByTag("td"); |
201 |
|
|
|
202 |
|
|
|
203 |
|
|
if (currentStationSaved == false && fields.get(0).attr("class").equalsIgnoreCase("Tidsstreg")) { |
204 |
|
|
currentStation = true; |
205 |
|
|
continue; |
206 |
|
|
} |
207 |
|
|
|
208 |
torben |
1060 |
TimetableEntry entry = new TimetableEntry(); |
209 |
torben |
1036 |
|
210 |
torben |
1040 |
String station = DepartureFetcher.cleanText( fields.get(0).text() ) ; |
211 |
torben |
1036 |
if (station.equals("København")) |
212 |
|
|
station = "København H"; //correct inconsistency in naming |
213 |
|
|
|
214 |
torben |
1040 |
String arrival = DepartureFetcher.cleanText( fields.get(1).text() ); |
215 |
|
|
String departure = DepartureFetcher.cleanText( fields.get(2).text() ); |
216 |
|
|
|
217 |
torben |
1060 |
entry.setStation( station ); |
218 |
|
|
entry.setArrival( arrival ); |
219 |
|
|
entry.setDeparture( departure ); |
220 |
torben |
1036 |
|
221 |
|
|
|
222 |
|
|
if (currentStation == true && currentStationSaved == false ) { |
223 |
torben |
1060 |
entry.setCurrent(currentStation); |
224 |
torben |
1036 |
currentStationSaved = true; |
225 |
|
|
} |
226 |
|
|
|
227 |
torben |
1060 |
entry.setStationId( getStationId( station )); |
228 |
torben |
1036 |
|
229 |
torben |
1060 |
timetableBean.entries.add(entry); |
230 |
torben |
1036 |
} |
231 |
|
|
|
232 |
|
|
} else { |
233 |
|
|
logger.warning("No time table found, trainID=" + trainID + " type=" + type); |
234 |
|
|
} |
235 |
|
|
|
236 |
|
|
|
237 |
torben |
1060 |
return timetableBean; |
238 |
torben |
1036 |
} |
239 |
torben |
350 |
|
240 |
|
|
} |