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.util.ArrayList;
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 String 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) );

                        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 = 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 (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" );            

                for(RequestPosition current : list) {
                        sb.append( " <Placemark>\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	799	import java.util.ArrayList;
9			import java.util.List;
10	torben	796	import java.util.logging.Level;
11			import java.util.logging.Logger;
12	torben	798	import java.util.zip.ZipEntry;
13			import java.util.zip.ZipOutputStream;
14	torben	795
15			import javax.servlet.ServletException;
16			import javax.servlet.http.HttpServlet;
17			import javax.servlet.http.HttpServletRequest;
18			import javax.servlet.http.HttpServletResponse;
19
20			public class RequestPlotter extends HttpServlet {
21			private static final long serialVersionUID = 1L;
22	torben	799
23	torben	796	static final Logger log = Logger.getLogger(RequestPlotter.class.getName());
24	torben	799
25	torben	798	static final String KML = "application/vnd.google-earth.kml";
26			static final String KMZ = "application/vnd.google-earth.kmz";
27	torben	799
28			class RequestPosition {
29			public String ip;
30			public String time;
31			public String lat;
32			public String lng;
33			}
34
35
36
37			protected List<RequestPosition> getRequestsFromFile() throws IOException{
38			List<RequestPosition> positions = new ArrayList<RequestPosition>();
39
40	torben	795	try {
41	torben	797	FileInputStream fis = new FileInputStream("/var/log/apache2/app_access.log");
42	torben	795	BufferedReader in = new BufferedReader( new InputStreamReader(fis) );
43	torben	799
44	torben	795	String line;
45			while ( (line=in.readLine()) != null) {
46			if (line.indexOf("LocateStation") == -1 ){
47			continue;
48			}
49	torben	799
50	torben	795	if (line.indexOf("latitude") == -1 ) {
51			continue;
52			}
53	torben	799	RequestPosition pos = new RequestPosition();
54
55	torben	795	String toks[] = line.split(" ");
56	torben	799	pos.ip = toks[0];
57			pos.time = toks[3].replace("[", "");
58	torben	798	String argpart = toks[6].split("\\?")[1];
59
60	torben	795	String args[] = argpart.split("&");
61	torben	799
62			pos.lat = args[0].split("=")[1];
63			pos.lng = args[1].split("=")[1];
64	torben	795
65	torben	799	positions.add(pos);
66	torben	795	}
67	torben	799	} catch (IOException e) {
68	torben	796	log.log(Level.SEVERE, "getKml()", e);
69	torben	799	throw e;
70	torben	795	}
71	torben	799
72			return positions;
73	torben	795	}
74
75	torben	799	protected String formatXml(List<RequestPosition> list) {
76			StringBuilder sb = new StringBuilder();
77
78			sb.append( "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" );
79			sb.append( "<kml xmlns=\"http://www.opengis.net/kml/2.2\">\n" );
80			sb.append( "<Document>\n" );
81
82			for(RequestPosition current : list) {
83			sb.append( " <Placemark>\n" );
84			sb.append( " <description>IP=" + current.ip + " Time=" + current.time + "</description>\n" );
85			sb.append( " <Point><coordinates>" + current.lng + "," + current.lat + ",0</coordinates></Point>\n" );
86			sb.append( " </Placemark>\n" );
87			}
88
89			sb.append( "</Document>\n" );
90			sb.append( "</kml>\n" );
91
92			return sb.toString();
93			}
94
95	torben	795	@Override
96			protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
97	torben	799
98			String data = formatXml( getRequestsFromFile() );
99
100	torben	798	if (req.getParameter("zip") != null) {
101	torben	799
102	torben	798	ByteArrayOutputStream baos = new ByteArrayOutputStream();
103	torben	799
104	torben	798	ZipOutputStream zip = new ZipOutputStream(baos);
105			zip.putNextEntry( new ZipEntry("trains.kml") );
106			zip.write( data.getBytes() );
107			zip.closeEntry();
108			zip.close();
109	torben	799
110	torben	798	byte bytes[] = baos.toByteArray();
111	torben	799
112	torben	798	resp.setContentType(KMZ);
113			resp.setContentLength( bytes.length );
114			resp.getOutputStream().write(bytes);
115	torben	799
116	torben	798	} else {
117			resp.setContentType(KML);
118	torben	799	resp.getWriter().print( data );
119	torben	798	}
120	torben	795	}
121			}