thoerup/traininfoservice/RequestPlotter.java

package dk.thoerup.traininfoservice;

import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
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.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

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";

        class RequestPosition {
                public String ip;
                public Date time;
                public String lat;
                public String lng;
        }


        protected List<RequestPosition> getRequestsFromFile() throws IOException{
                List<RequestPosition> positions = new ArrayList<RequestPosition>();

                try {
                        FileInputStream fis = new FileInputStream("/var/log/apache2/app_access.log");
                        BufferedReader in = new BufferedReader( new InputStreamReader(fis) );

                        SimpleDateFormat df = new SimpleDateFormat("dd/MMM/yyyy:HH:mm:ss");

                        String line;
                        while ( (line=in.readLine()) != null) {
                                if (line.indexOf("LocateStation") == -1 ){
                                        continue;
                                }

                                if (line.indexOf("latitude") == -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];

                                positions.add(pos);
                        }
                } 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 String formatXml(List<RequestPosition> list) {
                StringBuilder sb = new StringBuilder();

                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( " <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" );
                
/*
                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);
        */      
                

                Date now = new Date();
                for(RequestPosition current : list) {
                        
                        String style;
                        long timediff = now.getTime() - current.time.getTime();
                        
                        if ( timediff < (3*60*60*1000) ) {
                                style = "#red";
                        } else if ( timediff < (24*60*60*1000)) {
                                style = "#yellow";
                        } else {
                                style = "#green";
                        }
                        
                        sb.append( " <Placemark>\n" );
                        sb.append( "  <styleUrl>" + style + "</styleUrl>\n" );
                        sb.append( "  <description>IP=" + current.ip + "  Time=" + current.time + "</description>\n" );
                        sb.append( "  <Point><coordinates>" + current.lng + "," + current.lat + ",0</coordinates></Point>\n" );
                        sb.append( " </Placemark>\n" );                 
                }

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

                return sb.toString(); 
        }

        @Override
        protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

                String data = formatXml( getRequestsFromFile() );

                if (req.getParameter("zip") != null) {

                        ByteArrayOutputStream baos = new ByteArrayOutputStream();

                        ZipOutputStream zip = new ZipOutputStream(baos);
                        zip.putNextEntry( new ZipEntry("trains.kml") );
                        zip.write( data.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( data );
                }
        }
}
1	torben	795	package dk.thoerup.traininfoservice;
2
3			import java.io.BufferedReader;
4	torben	798	import java.io.ByteArrayOutputStream;
5	torben	795	import java.io.FileInputStream;
6			import java.io.IOException;
7			import java.io.InputStreamReader;
8	torben	800	import java.text.ParseException;
9			import java.text.SimpleDateFormat;
10	torben	799	import java.util.ArrayList;
11	torben	800	import java.util.Date;
12	torben	799	import java.util.List;
13	torben	796	import java.util.logging.Level;
14			import java.util.logging.Logger;
15	torben	798	import java.util.zip.ZipEntry;
16			import java.util.zip.ZipOutputStream;
17	torben	795
18			import javax.servlet.ServletException;
19			import javax.servlet.http.HttpServlet;
20			import javax.servlet.http.HttpServletRequest;
21			import javax.servlet.http.HttpServletResponse;
22
23			public class RequestPlotter extends HttpServlet {
24			private static final long serialVersionUID = 1L;
25	torben	799
26	torben	796	static final Logger log = Logger.getLogger(RequestPlotter.class.getName());
27	torben	799
28	torben	798	static final String KML = "application/vnd.google-earth.kml";
29			static final String KMZ = "application/vnd.google-earth.kmz";
30	torben	799
31			class RequestPosition {
32			public String ip;
33	torben	800	public Date time;
34	torben	799	public String lat;
35			public String lng;
36			}
37
38
39
40			protected List<RequestPosition> getRequestsFromFile() throws IOException{
41			List<RequestPosition> positions = new ArrayList<RequestPosition>();
42
43	torben	795	try {
44	torben	797	FileInputStream fis = new FileInputStream("/var/log/apache2/app_access.log");
45	torben	795	BufferedReader in = new BufferedReader( new InputStreamReader(fis) );
46	torben	799
47	torben	800	SimpleDateFormat df = new SimpleDateFormat("dd/MMM/yyyy:HH:mm:ss");
48
49	torben	795	String line;
50			while ( (line=in.readLine()) != null) {
51			if (line.indexOf("LocateStation") == -1 ){
52			continue;
53			}
54	torben	799
55	torben	795	if (line.indexOf("latitude") == -1 ) {
56			continue;
57			}
58	torben	799	RequestPosition pos = new RequestPosition();
59
60	torben	795	String toks[] = line.split(" ");
61	torben	799	pos.ip = toks[0];
62	torben	800
63			pos.time = df.parse( toks[3].replace("[", "") );
64
65	torben	798	String argpart = toks[6].split("\\?")[1];
66
67	torben	795	String args[] = argpart.split("&");
68	torben	799
69			pos.lat = args[0].split("=")[1];
70			pos.lng = args[1].split("=")[1];
71	torben	800
72	torben	799	positions.add(pos);
73	torben	795	}
74	torben	800	} catch (ParseException pe) {
75			log.log(Level.SEVERE, "parseException", pe);
76			throw new IOException(pe);
77	torben	799	} catch (IOException e) {
78	torben	796	log.log(Level.SEVERE, "getKml()", e);
79	torben	799	throw e;
80	torben	795	}
81	torben	799
82			return positions;
83	torben	795	}
84
85	torben	799	protected String formatXml(List<RequestPosition> list) {
86			StringBuilder sb = new StringBuilder();
87
88			sb.append( "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" );
89			sb.append( "<kml xmlns=\"http://www.opengis.net/kml/2.2\">\n" );
90			sb.append( "<Document>\n" );
91	torben	800
92
93			sb.append( " <Style id=\"red\">\n" );
94			sb.append( " <IconStyle><Icon><href>http://maps.google.com/mapfiles/kml/paddle/red-circle.png</href></Icon></IconStyle>\n" );
95			sb.append( " </Style>\n");
96	torben	799
97	torben	800	sb.append( " <Style id=\"yellow\">\n" );
98			sb.append( " <IconStyle><Icon><href>http://maps.google.com/mapfiles/kml/paddle/ylw-circle.png</href></Icon></IconStyle>\n" );
99			sb.append( " </Style>\n" );
100
101			sb.append( " <Style id=\"green\">\n" );
102			sb.append( " <IconStyle><Icon><href>http://maps.google.com/mapfiles/kml/paddle/grn-circle.png</href></Icon></IconStyle>\n" );
103	torben	801	sb.append( " </Style>\n\n" );
104
105			/*
106			String overlay =
107			" <ScreenOverlay>" +
108			" <name>Absolute Positioning: Top left</name>" +
109			" <description>Absolute Positioning: Top left</description>" +
110			" <visibility>1</visibility>" +
111			" <Icon>" +
112			" <href>http://code.google.com/apis/kml/documentation/top_left.jpg</href>" +
113			" </Icon>" +
114			" <overlayXY x=\"0\" y=\"1\" xunits=\"fraction\" yunits=\"fraction\"/>" +
115			" <screenXY x=\"0\" y=\"1\" xunits=\"fraction\" yunits=\"fraction\"/>" +
116			" <rotationXY x=\"0\" y=\"0\" xunits=\"fraction\" yunits=\"fraction\"/>" +
117			" <size x=\"0\" y=\"0\" xunits=\"fraction\" yunits=\"fraction\"/>" +
118			" </ScreenOverlay>" ;
119
120			sb.append(overlay);
121			*/
122
123	torben	800
124
125
126
127	torben	801
128	torben	800	Date now = new Date();
129	torben	799	for(RequestPosition current : list) {
130	torben	800
131			String style;
132			long timediff = now.getTime() - current.time.getTime();
133
134			if ( timediff < (36060*1000) ) {
135			style = "#red";
136			} else if ( timediff < (246060*1000)) {
137			style = "#yellow";
138			} else {
139			style = "#green";
140			}
141
142	torben	799	sb.append( " <Placemark>\n" );
143	torben	800	sb.append( " <styleUrl>" + style + "</styleUrl>\n" );
144	torben	799	sb.append( " <description>IP=" + current.ip + " Time=" + current.time + "</description>\n" );
145			sb.append( " <Point><coordinates>" + current.lng + "," + current.lat + ",0</coordinates></Point>\n" );
146			sb.append( " </Placemark>\n" );
147			}
148
149			sb.append( "</Document>\n" );
150			sb.append( "</kml>\n" );
151
152			return sb.toString();
153			}
154
155	torben	795	@Override
156			protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
157	torben	799
158			String data = formatXml( getRequestsFromFile() );
159
160	torben	798	if (req.getParameter("zip") != null) {
161	torben	799
162	torben	798	ByteArrayOutputStream baos = new ByteArrayOutputStream();
163	torben	799
164	torben	798	ZipOutputStream zip = new ZipOutputStream(baos);
165			zip.putNextEntry( new ZipEntry("trains.kml") );
166			zip.write( data.getBytes() );
167			zip.closeEntry();
168			zip.close();
169	torben	799
170	torben	798	byte bytes[] = baos.toByteArray();
171	torben	799
172	torben	798	resp.setContentType(KMZ);
173			resp.setContentLength( bytes.length );
174			resp.getOutputStream().write(bytes);
175	torben	799
176	torben	798	} else {
177			resp.setContentType(KML);
178	torben	799	resp.getWriter().print( data );
179	torben	798	}
180	torben	795	}
181			}