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.IOException;
import java.io.InputStream;
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.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.WebListener;
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> 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 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 {
                                                positions.green.add(pos); //GREEN
                                        }
        
                                }
                                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" );
                
                for(RequestPosition current : list) {                   
                        sb.append( " <Placemark>\n" );
                        sb.append( "  <styleUrl>#").append(color).append("</styleUrl>\n" );
                        sb.append( "  <description>IP=").append(current.ip).append("  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( "  Green:").append(positions.green.size()).append("<br/>\n");
                sb.append( "  Yellow:").append(positions.yellow.size()).append("<br/>\n");
                sb.append( "  Red:").append(positions.red.size()).append("\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" );
                
/*
                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, "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	package dk.thoerup.traininfoservice;
2
3	import java.io.BufferedReader;
4	import java.io.ByteArrayOutputStream;
5	import java.io.File;
6	import java.io.FileInputStream;
7	import java.io.IOException;
8	import java.io.InputStream;
9	import java.io.InputStreamReader;
10	import java.text.ParseException;
11	import java.text.SimpleDateFormat;
12	import java.util.ArrayList;
13	import java.util.Date;
14	import java.util.List;
15	import java.util.Map;
16	import java.util.logging.Level;
17	import java.util.logging.Logger;
18	import java.util.zip.GZIPInputStream;
19	import java.util.zip.ZipEntry;
20	import java.util.zip.ZipOutputStream;
21
22	import javax.servlet.ServletException;
23	import javax.servlet.annotation.WebListener;
24	import javax.servlet.annotation.WebServlet;
25	import javax.servlet.http.HttpServlet;
26	import javax.servlet.http.HttpServletRequest;
27	import javax.servlet.http.HttpServletResponse;
28
29	import dk.thoerup.traininfoservice.banedk.TimeoutMap;
30
31	@WebServlet(urlPatterns={"/RequestPlotter"})
32	public class RequestPlotter extends HttpServlet {
33	private static final long serialVersionUID = 1L;
34
35	static final Logger log = Logger.getLogger(RequestPlotter.class.getName());
36
37	static final String KML = "application/vnd.google-earth.kml";
38	static final String KMZ = "application/vnd.google-earth.kmz";
39
40	Map<String,String> cache = new TimeoutMap<String,String>(30601000);
41
42	class RequestPosition {
43	public String ip;
44	public Date time;
45	public String lat;
46	public String lng;
47	}
48
49	class PositionContainer {
50	List<RequestPosition> green = new ArrayList<RequestPosition>();
51	List<RequestPosition> yellow = new ArrayList<RequestPosition>();
52	List<RequestPosition> red = new ArrayList<RequestPosition>();
53	}
54
55
56	boolean isGz(String fileStr) {
57	return fileStr.substring(fileStr.length() - 3).equals(".gz");
58	}
59
60	protected PositionContainer getRequestsFromFileWorker(boolean multiple) throws IOException{
61	PositionContainer positions = new PositionContainer();
62
63	try {
64	String files_single[] = {"/var/log/apache2/app_access.log"};
65	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"};
66
67	String files[];
68
69	if (multiple == false) {
70	files = files_single;
71	} else {
72	files = files_multi;
73	}
74
75	SimpleDateFormat df = new SimpleDateFormat("dd/MMM/yyyy:HH:mm:ss");
76
77	Date now = new Date();
78	for (String fileStr : files ) {
79	File f = new File(fileStr);
80	if ( !f.exists() ) {
81	continue;
82	}
83
84	FileInputStream fis = new FileInputStream(fileStr);
85
86	InputStream input;
87	if ( isGz(fileStr)) {
88	input = new GZIPInputStream(fis);
89	} else {
90	input = fis;
91	}
92
93	BufferedReader in = new BufferedReader( new InputStreamReader(input) );
94
95
96	String line;
97	while ( (line=in.readLine()) != null) {
98	if (line.indexOf("LocateStation") == -1 ){
99	continue;
100	}
101
102	if (line.indexOf("latitude=") == -1 ) {
103	continue;
104	}
105
106	if (line.indexOf("longitude=") == -1) {
107	continue;
108	}
109
110	RequestPosition pos = new RequestPosition();
111
112	String toks[] = line.split(" ");
113	pos.ip = toks[0];
114
115	pos.time = df.parse( toks[3].replace("[", "") );
116
117	String argpart = toks[6].split("\\?")[1];
118
119	String args[] = argpart.split("&");
120
121	pos.lat = args[0].split("=")[1];
122	pos.lng = args[1].split("=")[1];
123
124
125	long timediff = now.getTime() - pos.time.getTime();
126	if ( timediff < (36060*1000) ) {
127	positions.red.add(pos); //RED
128	} else if ( timediff < (246060*1000)) {
129	positions.yellow.add(pos); //YELLOW
130	} else {
131	positions.green.add(pos); //GREEN
132	}
133
134	}
135	in.close();
136	input.close();
137	fis.close();
138	}
139	} catch (ParseException pe) {
140	log.log(Level.SEVERE, "parseException", pe);
141	throw new IOException(pe);
142	} catch (IOException e) {
143	log.log(Level.SEVERE, "getKml()", e);
144	throw e;
145	}
146
147	return positions;
148	}
149
150	protected void formatPositions(StringBuilder sb, String color, List<RequestPosition> list) {
151	sb.append( "<Folder>\n");
152	sb.append( " <name>" ).append(color).append("</name>\n");
153	sb.append( " <open>0</open>\n" );
154
155	for(RequestPosition current : list) {
156	sb.append( " <Placemark>\n" );
157	sb.append( " <styleUrl>#").append(color).append("</styleUrl>\n" );
158	sb.append( " <description>IP=").append(current.ip).append(" Time=").append(current.time).append("</description>\n" );
159	sb.append( " <Point><coordinates>").append(current.lng).append(",").append(current.lat).append(",0</coordinates></Point>\n" );
160	sb.append( " </Placemark>\n" );
161	}
162
163	sb.append("</Folder>\n");
164	}
165
166	protected String formatXml(PositionContainer positions) {
167	StringBuilder sb = new StringBuilder(1024*1024);
168
169	sb.append( "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" );
170	sb.append( "<kml xmlns=\"http://www.opengis.net/kml/2.2\">\n" );
171	sb.append( "<Document>\n" );
172	sb.append( " <description><![CDATA[");
173	sb.append( " Green:").append(positions.green.size()).append("<br/>\n");
174	sb.append( " Yellow:").append(positions.yellow.size()).append("<br/>\n");
175	sb.append( " Red:").append(positions.red.size()).append("\n");
176	sb.append( " ]]></description>");
177
178
179	sb.append( " <Style id=\"red\">\n" );
180	sb.append( " <IconStyle><Icon><href>http://maps.google.com/mapfiles/kml/paddle/red-circle.png</href></Icon></IconStyle>\n" );
181	sb.append( " </Style>\n");
182
183	sb.append( " <Style id=\"yellow\">\n" );
184	sb.append( " <IconStyle><Icon><href>http://maps.google.com/mapfiles/kml/paddle/ylw-circle.png</href></Icon></IconStyle>\n" );
185	sb.append( " </Style>\n" );
186
187	sb.append( " <Style id=\"green\">\n" );
188	sb.append( " <IconStyle><Icon><href>http://maps.google.com/mapfiles/kml/paddle/grn-circle.png</href></Icon></IconStyle>\n" );
189	sb.append( " </Style>\n\n" );
190
191	/*
192	String overlay =
193	" <ScreenOverlay>" +
194	" <name>Absolute Positioning: Top left</name>" +
195	" <description>Absolute Positioning: Top left</description>" +
196	" <visibility>1</visibility>" +
197	" <Icon>" +
198	" <href>http://code.google.com/apis/kml/documentation/top_left.jpg</href>" +
199	" </Icon>" +
200	" <overlayXY x=\"0\" y=\"1\" xunits=\"fraction\" yunits=\"fraction\"/>" +
201	" <screenXY x=\"0\" y=\"1\" xunits=\"fraction\" yunits=\"fraction\"/>" +
202	" <rotationXY x=\"0\" y=\"0\" xunits=\"fraction\" yunits=\"fraction\"/>" +
203	" <size x=\"0\" y=\"0\" xunits=\"fraction\" yunits=\"fraction\"/>" +
204	" </ScreenOverlay>" ;
205
206	sb.append(overlay);
207	*/
208
209
210	formatPositions(sb, "green", positions.green);
211	formatPositions(sb, "yellow", positions.yellow);
212	formatPositions(sb, "red", positions.red);
213
214
215	sb.append( "</Document>\n" );
216	sb.append( "</kml>\n" );
217
218	return sb.toString();
219	}
220
221	protected String getRequestsFromFile(boolean multiple) throws IOException {
222	String kmlData = null;
223	String key;
224
225	if (multiple == false) {
226	key = "kmldata";
227	} else {
228	key = "kmldata-multi";
229	}
230
231	kmlData = cache.get(key);
232
233	if (kmlData == null) {
234	kmlData = formatXml( getRequestsFromFileWorker(multiple) );
235	cache.put(key, kmlData);
236	kmlData += "<!-- from source -->";
237	} else {
238	kmlData += "<!-- cached -->";
239	}
240
241	return kmlData;
242	}
243
244	boolean enabled(String param) {
245	if (param == null \|\| param.equals("")) {
246	return false;
247	}
248
249	int p = 0;
250	try {
251	p = Integer.parseInt(param);
252	} catch (Exception e) {}
253
254	return (p != 0);
255	}
256
257	@Override
258	protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
259
260	boolean multiple = enabled( req.getParameter("multi") );
261
262	String kmlData = getRequestsFromFile(multiple);
263
264	if ( enabled(req.getParameter("zip")) ) {
265
266	ByteArrayOutputStream baos = new ByteArrayOutputStream();
267
268	ZipOutputStream zip = new ZipOutputStream(baos);
269	zip.putNextEntry( new ZipEntry("trains.kml") );
270	zip.write( kmlData.getBytes() );
271	zip.closeEntry();
272	zip.close();
273
274	byte bytes[] = baos.toByteArray();
275
276	resp.setContentType(KMZ);
277	resp.setContentLength( bytes.length );
278	resp.getOutputStream().write(bytes);
279
280	} else {
281	resp.setContentType(KML);
282	resp.getWriter().print( kmlData );
283	}
284	}
285	}