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.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.genericjavautils.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 accessLogDir = new File("/home/torben/inst/glassfishv3/glassfish/domains/domain1/logs/access/");
                
                File logFiles[] = accessLogDir.listFiles( new FilenameFilter() {
                        @Override
                        public boolean accept(File dir, String name) {
                                //log.info("name:" + name);
                                return name.startsWith("server_access_log");
                        }                       
                });
                
                Arrays.sort(logFiles);
                
                if (logFiles == null) {                 
                        File[] empty = {};
                        log.info("file array was empty");
                        return empty;
                }
                
                int from = (count>logFiles.length) ? 0 : logFiles.length - (count);
                int to = logFiles.length;
                                
                return Arrays.copyOfRange(logFiles, from, to);  
        }
        
        protected PositionContainer getRequestsFromFileWorker(int  count) throws IOException{
                PositionContainer positions = new PositionContainer();

                try {                   
                        
                        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( "  <name>").append(current.time).append("</name>\n" );
                        sb.append( "  <styleUrl>#").append(color).append("</styleUrl>\n" );
                        sb.append( "  <description><![CDATA[IP=").append(current.ip).append("<br/> ]]></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(int count) throws IOException {            
                String kmlData = null;
                String key;
                
                key = "kmldata-" + count;
                                        
                kmlData = cache.get(key);
                        
                if (kmlData == null) {
                        kmlData = formatXml( getRequestsFromFileWorker(count) );
                        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);
        }

        int getCount(String param) {
                if (param == null || param.equals("")) {
                        return 1;
                }
                                
                return Integer.parseInt(param);
        }

        
        @Override
        protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
                
                
                int count = getCount( req.getParameter("count") );
                
                if (count > 30) //limit to 30 days
                        count = 30;
                if (count < 0) //negative count is not allowed
                        count = 0;
                
                String kmlData = getRequestsFromFile(count);
                
                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.setHeader("Content-Disposition", "attachment; filename=Traininfo-requestplotter.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	798	import java.util.zip.ZipEntry;
21			import java.util.zip.ZipOutputStream;
22	torben	795
23			import javax.servlet.ServletException;
24	torben	958	import javax.servlet.annotation.WebServlet;
25	torben	795	import javax.servlet.http.HttpServlet;
26			import javax.servlet.http.HttpServletRequest;
27			import javax.servlet.http.HttpServletResponse;
28
29	torben	1355	import dk.thoerup.genericjavautils.TimeoutMap;
30	torben	802
31	torben	958	@WebServlet(urlPatterns={"/RequestPlotter"})
32	torben	795	public class RequestPlotter extends HttpServlet {
33			private static final long serialVersionUID = 1L;
34	torben	799
35	torben	796	static final Logger log = Logger.getLogger(RequestPlotter.class.getName());
36	torben	799
37	torben	798	static final String KML = "application/vnd.google-earth.kml";
38			static final String KMZ = "application/vnd.google-earth.kmz";
39	torben	802
40	torben	954	Map<String,String> cache = new TimeoutMap<String,String>(30601000);
41	torben	799
42			class RequestPosition {
43			public String ip;
44	torben	800	public Date time;
45	torben	799	public String lat;
46			public String lng;
47			}
48	torben	892
49			class PositionContainer {
50	torben	987	List<RequestPosition> blue = new ArrayList<RequestPosition>();
51	torben	892	List<RequestPosition> green = new ArrayList<RequestPosition>();
52			List<RequestPosition> yellow = new ArrayList<RequestPosition>();
53			List<RequestPosition> red = new ArrayList<RequestPosition>();
54			}
55	torben	799
56
57	torben	809	boolean isGz(String fileStr) {
58			return fileStr.substring(fileStr.length() - 3).equals(".gz");
59			}
60	torben	1310
61			protected File[] getFiles(int count) {
62			File accessLogDir = new File("/home/app/domain1/logs/access/");
63	torben	1311	//File accessLogDir = new File("/home/torben/inst/glassfishv3/glassfish/domains/domain1/logs/access/");
64	torben	1310
65			File logFiles[] = accessLogDir.listFiles( new FilenameFilter() {
66			@Override
67			public boolean accept(File dir, String name) {
68	torben	1311	//log.info("name:" + name);
69	torben	1310	return name.startsWith("server_access_log");
70			}
71			});
72
73	torben	1311	Arrays.sort(logFiles);
74
75	torben	1310	if (logFiles == null) {
76			File[] empty = {};
77	torben	1311	log.info("file array was empty");
78	torben	1310	return empty;
79			}
80
81	torben	1317	int from = (count>logFiles.length) ? 0 : logFiles.length - (count);
82	torben	1311	int to = logFiles.length;
83	torben	1310
84			return Arrays.copyOfRange(logFiles, from, to);
85			}
86
87	torben	1312	protected PositionContainer getRequestsFromFileWorker(int count) throws IOException{
88	torben	1310	PositionContainer positions = new PositionContainer();
89	torben	799
90	torben	1312	try {
91	torben	1310
92			File files[] = getFiles(count);
93
94			SimpleDateFormat df = new SimpleDateFormat("dd/MMM/yyyy:HH:mm:ss");
95
96			Date now = new Date();
97			for (File f : files ) {
98			log.info("Parsing file: " + f.getName() );
99
100			if ( !f.exists() ) {
101			continue;
102			}
103
104
105			InputStream input = new FileInputStream(f);
106
107
108			BufferedReader in = new BufferedReader( new InputStreamReader(input) );
109
110
111			String line;
112			while ( (line=in.readLine()) != null) {
113			if (line.indexOf("LocateStation") == -1 ){
114			continue;
115			}
116
117			if (line.indexOf("latitude=") == -1 ) {
118			continue;
119			}
120
121			if (line.indexOf("longitude=") == -1) {
122			continue;
123			}
124
125			RequestPosition pos = new RequestPosition();
126
127			String toks[] = line.split(" ");
128			pos.ip = toks[0].replaceAll("\"", "");
129
130			pos.time = df.parse( toks[2].replace("\"", "") );
131
132			String argpart = toks[5].split("\\?")[1];
133
134			String args[] = argpart.split("&");
135
136			pos.lat = args[0].split("=")[1];
137			pos.lng = args[1].split("=")[1];
138
139
140			long timediff = now.getTime() - pos.time.getTime();
141			if ( timediff < (36060*1000) ) {
142			positions.red.add(pos); //RED
143			} else if ( timediff < (246060*1000)) {
144			positions.yellow.add(pos); //YELLOW
145			} else if ( timediff < (72460601000)) {
146			positions.green.add(pos); //GREEN
147			} else {
148			positions.blue.add(pos); //BLUE
149			}
150
151			}
152			in.close();
153			input.close();
154
155			}
156			} catch (ParseException pe) {
157			log.log(Level.SEVERE, "parseException", pe);
158			throw new IOException(pe);
159			} catch (IOException e) {
160			log.log(Level.SEVERE, "getKml()", e);
161			throw e;
162			}
163
164			return positions;
165			}
166
167
168			/* old apache code
169	torben	892	protected PositionContainer getRequestsFromFileWorker(boolean multiple) throws IOException{
170			PositionContainer positions = new PositionContainer();
171	torben	799
172	torben	795	try {
173	torben	809	String files_single[] = {"/var/log/apache2/app_access.log"};
174	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"};
175	torben	809
176			String files[];
177
178			if (multiple == false) {
179			files = files_single;
180			} else {
181			files = files_multi;
182			}
183	torben	799
184	torben	800	SimpleDateFormat df = new SimpleDateFormat("dd/MMM/yyyy:HH:mm:ss");
185	torben	892
186			Date now = new Date();
187	torben	809	for (String fileStr : files ) {
188			File f = new File(fileStr);
189			if ( !f.exists() ) {
190	torben	795	continue;
191			}
192	torben	809
193			FileInputStream fis = new FileInputStream(fileStr);
194
195			InputStream input;
196			if ( isGz(fileStr)) {
197			input = new GZIPInputStream(fis);
198			} else {
199			input = fis;
200			}
201
202			BufferedReader in = new BufferedReader( new InputStreamReader(input) );
203	torben	799
204	torben	809
205			String line;
206			while ( (line=in.readLine()) != null) {
207			if (line.indexOf("LocateStation") == -1 ){
208			continue;
209			}
210
211	torben	818	if (line.indexOf("latitude=") == -1 ) {
212	torben	809	continue;
213			}
214	torben	818
215			if (line.indexOf("longitude=") == -1) {
216			continue;
217			}
218
219	torben	809	RequestPosition pos = new RequestPosition();
220
221			String toks[] = line.split(" ");
222			pos.ip = toks[0];
223
224			pos.time = df.parse( toks[3].replace("[", "") );
225
226			String argpart = toks[6].split("\\?")[1];
227
228			String args[] = argpart.split("&");
229
230			pos.lat = args[0].split("=")[1];
231			pos.lng = args[1].split("=")[1];
232	torben	892
233
234			long timediff = now.getTime() - pos.time.getTime();
235			if ( timediff < (36060*1000) ) {
236			positions.red.add(pos); //RED
237			} else if ( timediff < (246060*1000)) {
238			positions.yellow.add(pos); //YELLOW
239	torben	987	} else if ( timediff < (72460601000)) {
240			positions.green.add(pos); //GREEN
241	torben	892	} else {
242	torben	987	positions.blue.add(pos); //BLUE
243	torben	892	}
244	torben	809
245	torben	795	}
246	torben	809	in.close();
247			input.close();
248			fis.close();
249	torben	795	}
250	torben	800	} catch (ParseException pe) {
251			log.log(Level.SEVERE, "parseException", pe);
252			throw new IOException(pe);
253	torben	799	} catch (IOException e) {
254	torben	796	log.log(Level.SEVERE, "getKml()", e);
255	torben	799	throw e;
256	torben	795	}
257	torben	799
258			return positions;
259	torben	1310	}*/
260	torben	892
261			protected void formatPositions(StringBuilder sb, String color, List<RequestPosition> list) {
262			sb.append( "<Folder>\n");
263			sb.append( " <name>" ).append(color).append("</name>\n");
264			sb.append( " <open>0</open>\n" );
265
266	torben	1000	int count=0;
267			for(RequestPosition current : list) {
268			String id = color + count++;
269			sb.append( " <Placemark id=\"" + id + "\">\n" );
270	torben	1425	sb.append( " <name>").append(current.time).append("</name>\n" );
271	torben	896	sb.append( " <styleUrl>#").append(color).append("</styleUrl>\n" );
272	torben	1426	sb.append( " <description><![CDATA[IP=").append(current.ip).append("<br/> ]]></description>\n" );
273	torben	896	sb.append( " <Point><coordinates>").append(current.lng).append(",").append(current.lat).append(",0</coordinates></Point>\n" );
274	torben	892	sb.append( " </Placemark>\n" );
275			}
276
277			sb.append("</Folder>\n");
278			}
279	torben	795
280	torben	892	protected String formatXml(PositionContainer positions) {
281	torben	897	StringBuilder sb = new StringBuilder(1024*1024);
282	torben	799
283			sb.append( "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" );
284			sb.append( "<kml xmlns=\"http://www.opengis.net/kml/2.2\">\n" );
285			sb.append( "<Document>\n" );
286	torben	941	sb.append( " <description><![CDATA[");
287	torben	987	sb.append( " Red:").append(positions.red.size()).append(" (whithin 3 hours)<br/>\n");
288			sb.append( " Yellow:").append(positions.yellow.size()).append(" (within 24 hours)<br/>\n");
289			sb.append( " Green:").append(positions.green.size()).append(" (within one week)<br/>\n");
290			sb.append( " Blue:").append(positions.blue.size()).append(" (older)<br/>\n");
291	torben	941	sb.append( " ]]></description>");
292	torben	800
293
294			sb.append( " <Style id=\"red\">\n" );
295			sb.append( " <IconStyle><Icon><href>http://maps.google.com/mapfiles/kml/paddle/red-circle.png</href></Icon></IconStyle>\n" );
296			sb.append( " </Style>\n");
297	torben	799
298	torben	800	sb.append( " <Style id=\"yellow\">\n" );
299			sb.append( " <IconStyle><Icon><href>http://maps.google.com/mapfiles/kml/paddle/ylw-circle.png</href></Icon></IconStyle>\n" );
300			sb.append( " </Style>\n" );
301
302			sb.append( " <Style id=\"green\">\n" );
303			sb.append( " <IconStyle><Icon><href>http://maps.google.com/mapfiles/kml/paddle/grn-circle.png</href></Icon></IconStyle>\n" );
304	torben	801	sb.append( " </Style>\n\n" );
305
306	torben	987	sb.append( " <Style id=\"blue\">\n" );
307	torben	988	sb.append( " <IconStyle><Icon><href>http://maps.google.com/mapfiles/kml/paddle/blu-circle.png</href></Icon></IconStyle>\n" );
308	torben	987	sb.append( " </Style>\n\n" );
309	torben	801	/*
310			String overlay =
311			" <ScreenOverlay>" +
312			" <name>Absolute Positioning: Top left</name>" +
313			" <description>Absolute Positioning: Top left</description>" +
314			" <visibility>1</visibility>" +
315			" <Icon>" +
316			" <href>http://code.google.com/apis/kml/documentation/top_left.jpg</href>" +
317			" </Icon>" +
318			" <overlayXY x=\"0\" y=\"1\" xunits=\"fraction\" yunits=\"fraction\"/>" +
319			" <screenXY x=\"0\" y=\"1\" xunits=\"fraction\" yunits=\"fraction\"/>" +
320			" <rotationXY x=\"0\" y=\"0\" xunits=\"fraction\" yunits=\"fraction\"/>" +
321			" <size x=\"0\" y=\"0\" xunits=\"fraction\" yunits=\"fraction\"/>" +
322			" </ScreenOverlay>" ;
323
324			sb.append(overlay);
325			*/
326
327	torben	800
328	torben	987	formatPositions(sb, "blue", positions.blue);
329	torben	892	formatPositions(sb, "green", positions.green);
330	torben	893	formatPositions(sb, "yellow", positions.yellow);
331	torben	892	formatPositions(sb, "red", positions.red);
332
333	torben	800
334	torben	805	sb.append( "</Document>\n" );
335	torben	799	sb.append( "</kml>\n" );
336
337			return sb.toString();
338			}
339	torben	809
340	torben	1312	protected String getRequestsFromFile(int count) throws IOException {
341	torben	809	String kmlData = null;
342			String key;
343	torben	802
344	torben	1312	key = "kmldata-" + count;
345	torben	809
346	torben	1312	kmlData = cache.get(key);
347	torben	809
348	torben	803	if (kmlData == null) {
349	torben	1312	kmlData = formatXml( getRequestsFromFileWorker(count) );
350	torben	809	cache.put(key, kmlData);
351	torben	803	kmlData += "<!-- from source -->";
352	torben	802	} else {
353	torben	803	kmlData += "<!-- cached -->";
354	torben	802	}
355	torben	809
356			return kmlData;
357			}
358	torben	810
359			boolean enabled(String param) {
360			if (param == null \|\| param.equals("")) {
361			return false;
362			}
363
364			int p = 0;
365			try {
366			p = Integer.parseInt(param);
367			} catch (Exception e) {}
368
369			return (p != 0);
370			}
371	torben	799
372	torben	1313	int getCount(String param) {
373			if (param == null \|\| param.equals("")) {
374			return 1;
375			}
376
377			return Integer.parseInt(param);
378			}
379
380
381	torben	809	@Override
382			protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
383	torben	802
384	torben	809
385	torben	1313	int count = getCount( req.getParameter("count") );
386	torben	809
387	torben	1312	if (count > 30) //limit to 30 days
388			count = 30;
389	torben	1370	if (count < 0) //negative count is not allowed
390			count = 0;
391	torben	1312
392			String kmlData = getRequestsFromFile(count);
393
394	torben	810	if ( enabled(req.getParameter("zip")) ) {
395	torben	799
396	torben	798	ByteArrayOutputStream baos = new ByteArrayOutputStream();
397	torben	799
398	torben	798	ZipOutputStream zip = new ZipOutputStream(baos);
399			zip.putNextEntry( new ZipEntry("trains.kml") );
400	torben	803	zip.write( kmlData.getBytes() );
401	torben	798	zip.closeEntry();
402			zip.close();
403	torben	799
404	torben	798	byte bytes[] = baos.toByteArray();
405	torben	799
406	torben	798	resp.setContentType(KMZ);
407	torben	1428	resp.setHeader("Content-Disposition", "attachment; filename=Traininfo-requestplotter.kmz");
408	torben	1427	resp.setContentLength( bytes.length );
409	torben	798	resp.getOutputStream().write(bytes);
410	torben	799
411	torben	798	} else {
412			resp.setContentType(KML);
413	torben	803	resp.getWriter().print( kmlData );
414	torben	798	}
415	torben	795	}
416			}