thoerup/traininfoservice/RequestPlotter.java

package dk.thoerup.traininfoservice;

import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FilenameFilter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Date;
import java.util.List;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.zip.GZIPInputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import dk.thoerup.traininfoservice.banedk.TimeoutMap;

@WebServlet(urlPatterns={"/RequestPlotter"})
public class RequestPlotter extends HttpServlet {
        private static final long serialVersionUID = 1L;

        static final Logger log = Logger.getLogger(RequestPlotter.class.getName());

        static final String KML = "application/vnd.google-earth.kml";
        static final String KMZ = "application/vnd.google-earth.kmz";
        
        Map<String,String> cache = new TimeoutMap<String,String>(30*60*1000);

        class RequestPosition {
                public String ip;
                public Date time;
                public String lat;
                public String lng;
        }
        
        class PositionContainer {
                List<RequestPosition> blue = new ArrayList<RequestPosition>();
                List<RequestPosition> green = new ArrayList<RequestPosition>();
                List<RequestPosition> yellow = new ArrayList<RequestPosition>();
                List<RequestPosition> red = new ArrayList<RequestPosition>();
        }


        boolean isGz(String fileStr) {
                return fileStr.substring(fileStr.length() - 3).equals(".gz");
        }
        
        protected File[] getFiles(int count) {
                File accessLogDir = new File("/home/app/domain1/logs/access/");
                
                File logFiles[] = accessLogDir.listFiles( new FilenameFilter() {
                        @Override
                        public boolean accept(File dir, String name) {
                                return name.startsWith("server_access_log");
                        }                       
                });
                
                if (logFiles == null) {                 
                        File[] empty = {};
                        return empty;
                }
                
                int from = logFiles.length - count;
                int to = logFiles.length-1;
                                
                return Arrays.copyOfRange(logFiles, from, to);  
        }
        
        protected PositionContainer getRequestsFromFileWorker(boolean multiple) throws IOException{
                PositionContainer positions = new PositionContainer();

                try {
                        
                        int count;
                        
                        if (multiple == false) {
                                count = 1;
                        } else {
                                count = 4;
                        }
                        
                        File files[] = getFiles(count);

                        SimpleDateFormat df = new SimpleDateFormat("dd/MMM/yyyy:HH:mm:ss");
                
                        Date now = new Date();
                        for (File f : files ) {
                                log.info("Parsing file: "  + f.getName() );
                                
                                if ( !f.exists() ) {
                                        continue;
                                }
                                
                                
                                InputStream input  = new FileInputStream(f);

                                
                                BufferedReader in = new BufferedReader( new InputStreamReader(input) );

        
                                String line;
                                while ( (line=in.readLine()) != null) {
                                        if (line.indexOf("LocateStation") == -1 ){
                                                continue;
                                        }
        
                                        if (line.indexOf("latitude=") == -1 ) {
                                                continue;
                                        }
                                        
                                        if (line.indexOf("longitude=") == -1) {
                                                continue;
                                        }
                                        
                                        RequestPosition pos = new RequestPosition();
        
                                        String toks[] = line.split(" ");
                                        pos.ip = toks[0].replaceAll("\"", "");
        
                                        pos.time = df.parse( toks[2].replace("\"", "") );
        
                                        String argpart = toks[5].split("\\?")[1];
        
                                        String args[] = argpart.split("&");
        
                                        pos.lat = args[0].split("=")[1];
                                        pos.lng = args[1].split("=")[1];
                                        
                                        
                                        long timediff = now.getTime() - pos.time.getTime();                                     
                                        if ( timediff < (3*60*60*1000) ) {
                                                positions.red.add(pos); //RED
                                        } else if ( timediff < (24*60*60*1000)) {
                                                positions.yellow.add(pos); //YELLOW
                                        } else if ( timediff < (7*24*60*60*1000)) {
                                                positions.green.add(pos); //GREEN
                                        } else {
                                                positions.blue.add(pos); //BLUE
                                        }
        
                                }
                                in.close();
                                input.close();
                                
                        }
                } catch (ParseException pe) {
                        log.log(Level.SEVERE, "parseException", pe);
                        throw new IOException(pe);
                } catch (IOException e) {
                        log.log(Level.SEVERE, "getKml()", e);
                        throw e;
                }

                return positions;
        }

        
        /* old apache code
        protected PositionContainer getRequestsFromFileWorker(boolean multiple) throws IOException{
                PositionContainer positions = new PositionContainer();

                try {
                        String files_single[] = {"/var/log/apache2/app_access.log"};
                        String files_multi[] = {"/var/log/apache2/app_access.log.3.gz", "/var/log/apache2/app_access.log.2.gz", "/var/log/apache2/app_access.log.1", "/var/log/apache2/app_access.log"};
                        
                        String files[];
                        
                        if (multiple == false) {
                                files = files_single;
                        } else {
                                files = files_multi;
                        }

                        SimpleDateFormat df = new SimpleDateFormat("dd/MMM/yyyy:HH:mm:ss");
                
                        Date now = new Date();
                        for (String fileStr : files ) {
                                File f = new File(fileStr);
                                if ( !f.exists() ) {
                                        continue;
                                }
                                
                                FileInputStream fis = new FileInputStream(fileStr);
                                
                                InputStream input;
                                if ( isGz(fileStr)) {
                                        input = new GZIPInputStream(fis);
                                } else {
                                        input = fis;
                                }
                                
                                BufferedReader in = new BufferedReader( new InputStreamReader(input) );

        
                                String line;
                                while ( (line=in.readLine()) != null) {
                                        if (line.indexOf("LocateStation") == -1 ){
                                                continue;
                                        }
        
                                        if (line.indexOf("latitude=") == -1 ) {
                                                continue;
                                        }
                                        
                                        if (line.indexOf("longitude=") == -1) {
                                                continue;
                                        }
                                        
                                        RequestPosition pos = new RequestPosition();
        
                                        String toks[] = line.split(" ");
                                        pos.ip = toks[0];
        
                                        pos.time = df.parse( toks[3].replace("[", "") );
        
                                        String argpart = toks[6].split("\\?")[1];
        
                                        String args[] = argpart.split("&");
        
                                        pos.lat = args[0].split("=")[1];
                                        pos.lng = args[1].split("=")[1];
                                        
                                        
                                        long timediff = now.getTime() - pos.time.getTime();                                     
                                        if ( timediff < (3*60*60*1000) ) {
                                                positions.red.add(pos); //RED
                                        } else if ( timediff < (24*60*60*1000)) {
                                                positions.yellow.add(pos); //YELLOW
                                        } else if ( timediff < (7*24*60*60*1000)) {
                                                positions.green.add(pos); //GREEN
                                        } else {
                                                positions.blue.add(pos); //BLUE
                                        }
        
                                }
                                in.close();
                                input.close();
                                fis.close();
                        }
                } catch (ParseException pe) {
                        log.log(Level.SEVERE, "parseException", pe);
                        throw new IOException(pe);
                } catch (IOException e) {
                        log.log(Level.SEVERE, "getKml()", e);
                        throw e;
                }

                return positions;
        }*/
        
        protected void formatPositions(StringBuilder sb, String color, List<RequestPosition> list) {
                sb.append( "<Folder>\n");
                sb.append( " <name>" ).append(color).append("</name>\n");
                sb.append( " <open>0</open>\n" );
                
                int count=0;
                for(RequestPosition current : list) {
                        String id = color + count++; 
                        sb.append( " <Placemark id=\"" + id + "\">\n" );
                        sb.append( "  <styleUrl>#").append(color).append("</styleUrl>\n" );
                        sb.append( "  <description><![CDATA[IP=").append(current.ip).append("<br/>Time=").append(current.time).append("]]></description>\n" );
                        sb.append( "  <Point><coordinates>").append(current.lng).append(",").append(current.lat).append(",0</coordinates></Point>\n" );
                        sb.append( " </Placemark>\n" );                 
                }               
                
                sb.append("</Folder>\n");
        }

        protected String formatXml(PositionContainer positions) {
                StringBuilder sb = new StringBuilder(1024*1024);

                sb.append( "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" );
                sb.append( "<kml xmlns=\"http://www.opengis.net/kml/2.2\">\n" );
                sb.append( "<Document>\n" );            
                sb.append( " <description><![CDATA[");
                sb.append( "  Red:").append(positions.red.size()).append(" (whithin 3 hours)<br/>\n");
                sb.append( "  Yellow:").append(positions.yellow.size()).append(" (within 24 hours)<br/>\n");
                sb.append( "  Green:").append(positions.green.size()).append(" (within one week)<br/>\n");
                sb.append( "  Blue:").append(positions.blue.size()).append(" (older)<br/>\n");          
                sb.append( " ]]></description>");
                
                
                sb.append( " <Style id=\"red\">\n" );
                sb.append( "  <IconStyle><Icon><href>http://maps.google.com/mapfiles/kml/paddle/red-circle.png</href></Icon></IconStyle>\n" );
                sb.append( " </Style>\n");

                sb.append( " <Style id=\"yellow\">\n" );
                sb.append( "  <IconStyle><Icon><href>http://maps.google.com/mapfiles/kml/paddle/ylw-circle.png</href></Icon></IconStyle>\n" );
                sb.append( " </Style>\n" );

                sb.append( " <Style id=\"green\">\n" );
                sb.append( "  <IconStyle><Icon><href>http://maps.google.com/mapfiles/kml/paddle/grn-circle.png</href></Icon></IconStyle>\n" );
                sb.append( " </Style>\n\n" );
                
                sb.append( " <Style id=\"blue\">\n" );
                sb.append( "  <IconStyle><Icon><href>http://maps.google.com/mapfiles/kml/paddle/blu-circle.png</href></Icon></IconStyle>\n" );
                sb.append( " </Style>\n\n" );           
/*
                String overlay = 
              " <ScreenOverlay>" +
                " <name>Absolute Positioning: Top left</name>" +
                " <description>Absolute Positioning: Top left</description>" +
                " <visibility>1</visibility>" +
                "  <Icon>" +
                "   <href>http://code.google.com/apis/kml/documentation/top_left.jpg</href>" +
                "  </Icon>" +
                "  <overlayXY x=\"0\" y=\"1\" xunits=\"fraction\" yunits=\"fraction\"/>" +
                "  <screenXY x=\"0\" y=\"1\" xunits=\"fraction\" yunits=\"fraction\"/>" +
                "  <rotationXY x=\"0\" y=\"0\" xunits=\"fraction\" yunits=\"fraction\"/>" +
                "  <size x=\"0\" y=\"0\" xunits=\"fraction\" yunits=\"fraction\"/>" +
              " </ScreenOverlay>" ;
                
                sb.append(overlay);
        */      
                

                formatPositions(sb, "blue", positions.blue);
                formatPositions(sb, "green", positions.green);
                formatPositions(sb, "yellow", positions.yellow);
                formatPositions(sb, "red", positions.red);
                

                sb.append( "</Document>\n" );
                sb.append( "</kml>\n" );

                return sb.toString(); 
        }
        
        protected String getRequestsFromFile(boolean multiple) throws IOException {             
                String kmlData = null;
                String key;
                
                if (multiple == false)  {
                        key = "kmldata";
                } else {
                        key = "kmldata-multi";
                }
                                        
                kmlData = cache.get(key);
                        
                if (kmlData == null) {
                        kmlData = formatXml( getRequestsFromFileWorker(multiple) );
                        cache.put(key, kmlData);
                        kmlData += "<!-- from source -->";                      
                } else {
                        kmlData += "<!-- cached -->";
                }
                                        
                return kmlData;
        }
        
        boolean enabled(String param) {
                if (param == null || param.equals("")) {
                        return false;
                }
                
                int p = 0;
                try { 
                        p = Integer.parseInt(param);
                } catch (Exception e) {}
                
                return (p != 0);
        }

        @Override
        protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
                
                boolean multiple = enabled( req.getParameter("multi") );
                
                String kmlData = getRequestsFromFile(multiple);
                
                if ( enabled(req.getParameter("zip")) ) {

                        ByteArrayOutputStream baos = new ByteArrayOutputStream();

                        ZipOutputStream zip = new ZipOutputStream(baos);
                        zip.putNextEntry( new ZipEntry("trains.kml") );
                        zip.write( kmlData.getBytes() );
                        zip.closeEntry();
                        zip.close();

                        byte bytes[] = baos.toByteArray();

                        resp.setContentType(KMZ);
                        resp.setContentLength( bytes.length );
                        resp.getOutputStream().write(bytes);

                } else {
                        resp.setContentType(KML);
                        resp.getWriter().print( kmlData );
                }
        }
}
1	torben	795	package dk.thoerup.traininfoservice;
2
3			import java.io.BufferedReader;
4	torben	798	import java.io.ByteArrayOutputStream;
5	torben	809	import java.io.File;
6	torben	795	import java.io.FileInputStream;
7	torben	1310	import java.io.FilenameFilter;
8	torben	795	import java.io.IOException;
9	torben	809	import java.io.InputStream;
10	torben	795	import java.io.InputStreamReader;
11	torben	800	import java.text.ParseException;
12			import java.text.SimpleDateFormat;
13	torben	799	import java.util.ArrayList;
14	torben	1310	import java.util.Arrays;
15	torben	800	import java.util.Date;
16	torben	799	import java.util.List;
17	torben	802	import java.util.Map;
18	torben	796	import java.util.logging.Level;
19			import java.util.logging.Logger;
20	torben	809	import java.util.zip.GZIPInputStream;
21	torben	798	import java.util.zip.ZipEntry;
22			import java.util.zip.ZipOutputStream;
23	torben	795
24			import javax.servlet.ServletException;
25	torben	958	import javax.servlet.annotation.WebServlet;
26	torben	795	import javax.servlet.http.HttpServlet;
27			import javax.servlet.http.HttpServletRequest;
28			import javax.servlet.http.HttpServletResponse;
29
30	torben	802	import dk.thoerup.traininfoservice.banedk.TimeoutMap;
31
32	torben	958	@WebServlet(urlPatterns={"/RequestPlotter"})
33	torben	795	public class RequestPlotter extends HttpServlet {
34			private static final long serialVersionUID = 1L;
35	torben	799
36	torben	796	static final Logger log = Logger.getLogger(RequestPlotter.class.getName());
37	torben	799
38	torben	798	static final String KML = "application/vnd.google-earth.kml";
39			static final String KMZ = "application/vnd.google-earth.kmz";
40	torben	802
41	torben	954	Map<String,String> cache = new TimeoutMap<String,String>(30601000);
42	torben	799
43			class RequestPosition {
44			public String ip;
45	torben	800	public Date time;
46	torben	799	public String lat;
47			public String lng;
48			}
49	torben	892
50			class PositionContainer {
51	torben	987	List<RequestPosition> blue = new ArrayList<RequestPosition>();
52	torben	892	List<RequestPosition> green = new ArrayList<RequestPosition>();
53			List<RequestPosition> yellow = new ArrayList<RequestPosition>();
54			List<RequestPosition> red = new ArrayList<RequestPosition>();
55			}
56	torben	799
57
58	torben	809	boolean isGz(String fileStr) {
59			return fileStr.substring(fileStr.length() - 3).equals(".gz");
60			}
61	torben	1310
62			protected File[] getFiles(int count) {
63			File accessLogDir = new File("/home/app/domain1/logs/access/");
64
65			File logFiles[] = accessLogDir.listFiles( new FilenameFilter() {
66			@Override
67			public boolean accept(File dir, String name) {
68			return name.startsWith("server_access_log");
69			}
70			});
71
72			if (logFiles == null) {
73			File[] empty = {};
74			return empty;
75			}
76
77			int from = logFiles.length - count;
78			int to = logFiles.length-1;
79
80			return Arrays.copyOfRange(logFiles, from, to);
81			}
82
83			protected PositionContainer getRequestsFromFileWorker(boolean multiple) throws IOException{
84			PositionContainer positions = new PositionContainer();
85	torben	799
86	torben	1310	try {
87
88			int count;
89
90			if (multiple == false) {
91			count = 1;
92			} else {
93			count = 4;
94			}
95
96			File files[] = getFiles(count);
97
98			SimpleDateFormat df = new SimpleDateFormat("dd/MMM/yyyy:HH:mm:ss");
99
100			Date now = new Date();
101			for (File f : files ) {
102			log.info("Parsing file: " + f.getName() );
103
104			if ( !f.exists() ) {
105			continue;
106			}
107
108
109			InputStream input = new FileInputStream(f);
110
111
112			BufferedReader in = new BufferedReader( new InputStreamReader(input) );
113
114
115			String line;
116			while ( (line=in.readLine()) != null) {
117			if (line.indexOf("LocateStation") == -1 ){
118			continue;
119			}
120
121			if (line.indexOf("latitude=") == -1 ) {
122			continue;
123			}
124
125			if (line.indexOf("longitude=") == -1) {
126			continue;
127			}
128
129			RequestPosition pos = new RequestPosition();
130
131			String toks[] = line.split(" ");
132			pos.ip = toks[0].replaceAll("\"", "");
133
134			pos.time = df.parse( toks[2].replace("\"", "") );
135
136			String argpart = toks[5].split("\\?")[1];
137
138			String args[] = argpart.split("&");
139
140			pos.lat = args[0].split("=")[1];
141			pos.lng = args[1].split("=")[1];
142
143
144			long timediff = now.getTime() - pos.time.getTime();
145			if ( timediff < (36060*1000) ) {
146			positions.red.add(pos); //RED
147			} else if ( timediff < (246060*1000)) {
148			positions.yellow.add(pos); //YELLOW
149			} else if ( timediff < (72460601000)) {
150			positions.green.add(pos); //GREEN
151			} else {
152			positions.blue.add(pos); //BLUE
153			}
154
155			}
156			in.close();
157			input.close();
158
159			}
160			} catch (ParseException pe) {
161			log.log(Level.SEVERE, "parseException", pe);
162			throw new IOException(pe);
163			} catch (IOException e) {
164			log.log(Level.SEVERE, "getKml()", e);
165			throw e;
166			}
167
168			return positions;
169			}
170
171
172			/* old apache code
173	torben	892	protected PositionContainer getRequestsFromFileWorker(boolean multiple) throws IOException{
174			PositionContainer positions = new PositionContainer();
175	torben	799
176	torben	795	try {
177	torben	809	String files_single[] = {"/var/log/apache2/app_access.log"};
178	torben	817	String files_multi[] = {"/var/log/apache2/app_access.log.3.gz", "/var/log/apache2/app_access.log.2.gz", "/var/log/apache2/app_access.log.1", "/var/log/apache2/app_access.log"};
179	torben	809
180			String files[];
181
182			if (multiple == false) {
183			files = files_single;
184			} else {
185			files = files_multi;
186			}
187	torben	799
188	torben	800	SimpleDateFormat df = new SimpleDateFormat("dd/MMM/yyyy:HH:mm:ss");
189	torben	892
190			Date now = new Date();
191	torben	809	for (String fileStr : files ) {
192			File f = new File(fileStr);
193			if ( !f.exists() ) {
194	torben	795	continue;
195			}
196	torben	809
197			FileInputStream fis = new FileInputStream(fileStr);
198
199			InputStream input;
200			if ( isGz(fileStr)) {
201			input = new GZIPInputStream(fis);
202			} else {
203			input = fis;
204			}
205
206			BufferedReader in = new BufferedReader( new InputStreamReader(input) );
207	torben	799
208	torben	809
209			String line;
210			while ( (line=in.readLine()) != null) {
211			if (line.indexOf("LocateStation") == -1 ){
212			continue;
213			}
214
215	torben	818	if (line.indexOf("latitude=") == -1 ) {
216	torben	809	continue;
217			}
218	torben	818
219			if (line.indexOf("longitude=") == -1) {
220			continue;
221			}
222
223	torben	809	RequestPosition pos = new RequestPosition();
224
225			String toks[] = line.split(" ");
226			pos.ip = toks[0];
227
228			pos.time = df.parse( toks[3].replace("[", "") );
229
230			String argpart = toks[6].split("\\?")[1];
231
232			String args[] = argpart.split("&");
233
234			pos.lat = args[0].split("=")[1];
235			pos.lng = args[1].split("=")[1];
236	torben	892
237
238			long timediff = now.getTime() - pos.time.getTime();
239			if ( timediff < (36060*1000) ) {
240			positions.red.add(pos); //RED
241			} else if ( timediff < (246060*1000)) {
242			positions.yellow.add(pos); //YELLOW
243	torben	987	} else if ( timediff < (72460601000)) {
244			positions.green.add(pos); //GREEN
245	torben	892	} else {
246	torben	987	positions.blue.add(pos); //BLUE
247	torben	892	}
248	torben	809
249	torben	795	}
250	torben	809	in.close();
251			input.close();
252			fis.close();
253	torben	795	}
254	torben	800	} catch (ParseException pe) {
255			log.log(Level.SEVERE, "parseException", pe);
256			throw new IOException(pe);
257	torben	799	} catch (IOException e) {
258	torben	796	log.log(Level.SEVERE, "getKml()", e);
259	torben	799	throw e;
260	torben	795	}
261	torben	799
262			return positions;
263	torben	1310	}*/
264	torben	892
265			protected void formatPositions(StringBuilder sb, String color, List<RequestPosition> list) {
266			sb.append( "<Folder>\n");
267			sb.append( " <name>" ).append(color).append("</name>\n");
268			sb.append( " <open>0</open>\n" );
269
270	torben	1000	int count=0;
271			for(RequestPosition current : list) {
272			String id = color + count++;
273			sb.append( " <Placemark id=\"" + id + "\">\n" );
274	torben	896	sb.append( " <styleUrl>#").append(color).append("</styleUrl>\n" );
275	torben	998	sb.append( " <description><![CDATA[IP=").append(current.ip).append("<br/>Time=").append(current.time).append("]]></description>\n" );
276	torben	896	sb.append( " <Point><coordinates>").append(current.lng).append(",").append(current.lat).append(",0</coordinates></Point>\n" );
277	torben	892	sb.append( " </Placemark>\n" );
278			}
279
280			sb.append("</Folder>\n");
281			}
282	torben	795
283	torben	892	protected String formatXml(PositionContainer positions) {
284	torben	897	StringBuilder sb = new StringBuilder(1024*1024);
285	torben	799
286			sb.append( "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" );
287			sb.append( "<kml xmlns=\"http://www.opengis.net/kml/2.2\">\n" );
288			sb.append( "<Document>\n" );
289	torben	941	sb.append( " <description><![CDATA[");
290	torben	987	sb.append( " Red:").append(positions.red.size()).append(" (whithin 3 hours)<br/>\n");
291			sb.append( " Yellow:").append(positions.yellow.size()).append(" (within 24 hours)<br/>\n");
292			sb.append( " Green:").append(positions.green.size()).append(" (within one week)<br/>\n");
293			sb.append( " Blue:").append(positions.blue.size()).append(" (older)<br/>\n");
294	torben	941	sb.append( " ]]></description>");
295	torben	800
296
297			sb.append( " <Style id=\"red\">\n" );
298			sb.append( " <IconStyle><Icon><href>http://maps.google.com/mapfiles/kml/paddle/red-circle.png</href></Icon></IconStyle>\n" );
299			sb.append( " </Style>\n");
300	torben	799
301	torben	800	sb.append( " <Style id=\"yellow\">\n" );
302			sb.append( " <IconStyle><Icon><href>http://maps.google.com/mapfiles/kml/paddle/ylw-circle.png</href></Icon></IconStyle>\n" );
303			sb.append( " </Style>\n" );
304
305			sb.append( " <Style id=\"green\">\n" );
306			sb.append( " <IconStyle><Icon><href>http://maps.google.com/mapfiles/kml/paddle/grn-circle.png</href></Icon></IconStyle>\n" );
307	torben	801	sb.append( " </Style>\n\n" );
308
309	torben	987	sb.append( " <Style id=\"blue\">\n" );
310	torben	988	sb.append( " <IconStyle><Icon><href>http://maps.google.com/mapfiles/kml/paddle/blu-circle.png</href></Icon></IconStyle>\n" );
311	torben	987	sb.append( " </Style>\n\n" );
312	torben	801	/*
313			String overlay =
314			" <ScreenOverlay>" +
315			" <name>Absolute Positioning: Top left</name>" +
316			" <description>Absolute Positioning: Top left</description>" +
317			" <visibility>1</visibility>" +
318			" <Icon>" +
319			" <href>http://code.google.com/apis/kml/documentation/top_left.jpg</href>" +
320			" </Icon>" +
321			" <overlayXY x=\"0\" y=\"1\" xunits=\"fraction\" yunits=\"fraction\"/>" +
322			" <screenXY x=\"0\" y=\"1\" xunits=\"fraction\" yunits=\"fraction\"/>" +
323			" <rotationXY x=\"0\" y=\"0\" xunits=\"fraction\" yunits=\"fraction\"/>" +
324			" <size x=\"0\" y=\"0\" xunits=\"fraction\" yunits=\"fraction\"/>" +
325			" </ScreenOverlay>" ;
326
327			sb.append(overlay);
328			*/
329
330	torben	800
331	torben	987	formatPositions(sb, "blue", positions.blue);
332	torben	892	formatPositions(sb, "green", positions.green);
333	torben	893	formatPositions(sb, "yellow", positions.yellow);
334	torben	892	formatPositions(sb, "red", positions.red);
335
336	torben	800
337	torben	805	sb.append( "</Document>\n" );
338	torben	799	sb.append( "</kml>\n" );
339
340			return sb.toString();
341			}
342	torben	809
343			protected String getRequestsFromFile(boolean multiple) throws IOException {
344			String kmlData = null;
345			String key;
346	torben	802
347	torben	809	if (multiple == false) {
348			key = "kmldata";
349			} else {
350			key = "kmldata-multi";
351			}
352
353			kmlData = cache.get(key);
354
355	torben	803	if (kmlData == null) {
356	torben	809	kmlData = formatXml( getRequestsFromFileWorker(multiple) );
357			cache.put(key, kmlData);
358	torben	803	kmlData += "<!-- from source -->";
359	torben	802	} else {
360	torben	803	kmlData += "<!-- cached -->";
361	torben	802	}
362	torben	809
363			return kmlData;
364			}
365	torben	810
366			boolean enabled(String param) {
367			if (param == null \|\| param.equals("")) {
368			return false;
369			}
370
371			int p = 0;
372			try {
373			p = Integer.parseInt(param);
374			} catch (Exception e) {}
375
376			return (p != 0);
377			}
378	torben	799
379	torben	809	@Override
380			protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
381	torben	802
382	torben	810	boolean multiple = enabled( req.getParameter("multi") );
383	torben	809
384			String kmlData = getRequestsFromFile(multiple);
385
386	torben	810	if ( enabled(req.getParameter("zip")) ) {
387	torben	799
388	torben	798	ByteArrayOutputStream baos = new ByteArrayOutputStream();
389	torben	799
390	torben	798	ZipOutputStream zip = new ZipOutputStream(baos);
391			zip.putNextEntry( new ZipEntry("trains.kml") );
392	torben	803	zip.write( kmlData.getBytes() );
393	torben	798	zip.closeEntry();
394			zip.close();
395	torben	799
396	torben	798	byte bytes[] = baos.toByteArray();
397	torben	799
398	torben	798	resp.setContentType(KMZ);
399			resp.setContentLength( bytes.length );
400			resp.getOutputStream().write(bytes);
401	torben	799
402	torben	798	} else {
403			resp.setContentType(KML);
404	torben	803	resp.getWriter().print( kmlData );
405	torben	798	}
406	torben	795	}
407			}