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> 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 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" );
                
                for(RequestPosition current : list) {                   
                        sb.append( " <Placemark>\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			import java.io.IOException;
8	torben	809	import java.io.InputStream;
9	torben	795	import java.io.InputStreamReader;
10	torben	800	import java.text.ParseException;
11			import java.text.SimpleDateFormat;
12	torben	799	import java.util.ArrayList;
13	torben	800	import java.util.Date;
14	torben	799	import java.util.List;
15	torben	802	import java.util.Map;
16	torben	796	import java.util.logging.Level;
17			import java.util.logging.Logger;
18	torben	809	import java.util.zip.GZIPInputStream;
19	torben	798	import java.util.zip.ZipEntry;
20			import java.util.zip.ZipOutputStream;
21	torben	795
22			import javax.servlet.ServletException;
23	torben	958	import javax.servlet.annotation.WebListener;
24			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	802	import dk.thoerup.traininfoservice.banedk.TimeoutMap;
30
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	799
61	torben	892	protected PositionContainer getRequestsFromFileWorker(boolean multiple) throws IOException{
62			PositionContainer positions = new PositionContainer();
63	torben	799
64	torben	795	try {
65	torben	809	String files_single[] = {"/var/log/apache2/app_access.log"};
66	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"};
67	torben	809
68			String files[];
69
70			if (multiple == false) {
71			files = files_single;
72			} else {
73			files = files_multi;
74			}
75	torben	799
76	torben	800	SimpleDateFormat df = new SimpleDateFormat("dd/MMM/yyyy:HH:mm:ss");
77	torben	892
78			Date now = new Date();
79	torben	809	for (String fileStr : files ) {
80			File f = new File(fileStr);
81			if ( !f.exists() ) {
82	torben	795	continue;
83			}
84	torben	809
85			FileInputStream fis = new FileInputStream(fileStr);
86
87			InputStream input;
88			if ( isGz(fileStr)) {
89			input = new GZIPInputStream(fis);
90			} else {
91			input = fis;
92			}
93
94			BufferedReader in = new BufferedReader( new InputStreamReader(input) );
95	torben	799
96	torben	809
97			String line;
98			while ( (line=in.readLine()) != null) {
99			if (line.indexOf("LocateStation") == -1 ){
100			continue;
101			}
102
103	torben	818	if (line.indexOf("latitude=") == -1 ) {
104	torben	809	continue;
105			}
106	torben	818
107			if (line.indexOf("longitude=") == -1) {
108			continue;
109			}
110
111	torben	809	RequestPosition pos = new RequestPosition();
112
113			String toks[] = line.split(" ");
114			pos.ip = toks[0];
115
116			pos.time = df.parse( toks[3].replace("[", "") );
117
118			String argpart = toks[6].split("\\?")[1];
119
120			String args[] = argpart.split("&");
121
122			pos.lat = args[0].split("=")[1];
123			pos.lng = args[1].split("=")[1];
124	torben	892
125
126			long timediff = now.getTime() - pos.time.getTime();
127			if ( timediff < (36060*1000) ) {
128			positions.red.add(pos); //RED
129			} else if ( timediff < (246060*1000)) {
130			positions.yellow.add(pos); //YELLOW
131	torben	987	} else if ( timediff < (72460601000)) {
132			positions.green.add(pos); //GREEN
133	torben	892	} else {
134	torben	987	positions.blue.add(pos); //BLUE
135	torben	892	}
136	torben	809
137	torben	795	}
138	torben	809	in.close();
139			input.close();
140			fis.close();
141	torben	795	}
142	torben	800	} catch (ParseException pe) {
143			log.log(Level.SEVERE, "parseException", pe);
144			throw new IOException(pe);
145	torben	799	} catch (IOException e) {
146	torben	796	log.log(Level.SEVERE, "getKml()", e);
147	torben	799	throw e;
148	torben	795	}
149	torben	799
150			return positions;
151	torben	795	}
152	torben	892
153			protected void formatPositions(StringBuilder sb, String color, List<RequestPosition> list) {
154			sb.append( "<Folder>\n");
155			sb.append( " <name>" ).append(color).append("</name>\n");
156			sb.append( " <open>0</open>\n" );
157
158			for(RequestPosition current : list) {
159			sb.append( " <Placemark>\n" );
160	torben	896	sb.append( " <styleUrl>#").append(color).append("</styleUrl>\n" );
161	torben	998	sb.append( " <description><![CDATA[IP=").append(current.ip).append("<br/>Time=").append(current.time).append("]]></description>\n" );
162	torben	896	sb.append( " <Point><coordinates>").append(current.lng).append(",").append(current.lat).append(",0</coordinates></Point>\n" );
163	torben	892	sb.append( " </Placemark>\n" );
164			}
165
166			sb.append("</Folder>\n");
167			}
168	torben	795
169	torben	892	protected String formatXml(PositionContainer positions) {
170	torben	897	StringBuilder sb = new StringBuilder(1024*1024);
171	torben	799
172			sb.append( "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" );
173			sb.append( "<kml xmlns=\"http://www.opengis.net/kml/2.2\">\n" );
174			sb.append( "<Document>\n" );
175	torben	941	sb.append( " <description><![CDATA[");
176	torben	987	sb.append( " Red:").append(positions.red.size()).append(" (whithin 3 hours)<br/>\n");
177			sb.append( " Yellow:").append(positions.yellow.size()).append(" (within 24 hours)<br/>\n");
178			sb.append( " Green:").append(positions.green.size()).append(" (within one week)<br/>\n");
179			sb.append( " Blue:").append(positions.blue.size()).append(" (older)<br/>\n");
180	torben	941	sb.append( " ]]></description>");
181	torben	800
182
183			sb.append( " <Style id=\"red\">\n" );
184			sb.append( " <IconStyle><Icon><href>http://maps.google.com/mapfiles/kml/paddle/red-circle.png</href></Icon></IconStyle>\n" );
185			sb.append( " </Style>\n");
186	torben	799
187	torben	800	sb.append( " <Style id=\"yellow\">\n" );
188			sb.append( " <IconStyle><Icon><href>http://maps.google.com/mapfiles/kml/paddle/ylw-circle.png</href></Icon></IconStyle>\n" );
189			sb.append( " </Style>\n" );
190
191			sb.append( " <Style id=\"green\">\n" );
192			sb.append( " <IconStyle><Icon><href>http://maps.google.com/mapfiles/kml/paddle/grn-circle.png</href></Icon></IconStyle>\n" );
193	torben	801	sb.append( " </Style>\n\n" );
194
195	torben	987	sb.append( " <Style id=\"blue\">\n" );
196	torben	988	sb.append( " <IconStyle><Icon><href>http://maps.google.com/mapfiles/kml/paddle/blu-circle.png</href></Icon></IconStyle>\n" );
197	torben	987	sb.append( " </Style>\n\n" );
198	torben	801	/*
199			String overlay =
200			" <ScreenOverlay>" +
201			" <name>Absolute Positioning: Top left</name>" +
202			" <description>Absolute Positioning: Top left</description>" +
203			" <visibility>1</visibility>" +
204			" <Icon>" +
205			" <href>http://code.google.com/apis/kml/documentation/top_left.jpg</href>" +
206			" </Icon>" +
207			" <overlayXY x=\"0\" y=\"1\" xunits=\"fraction\" yunits=\"fraction\"/>" +
208			" <screenXY x=\"0\" y=\"1\" xunits=\"fraction\" yunits=\"fraction\"/>" +
209			" <rotationXY x=\"0\" y=\"0\" xunits=\"fraction\" yunits=\"fraction\"/>" +
210			" <size x=\"0\" y=\"0\" xunits=\"fraction\" yunits=\"fraction\"/>" +
211			" </ScreenOverlay>" ;
212
213			sb.append(overlay);
214			*/
215
216	torben	800
217	torben	987	formatPositions(sb, "blue", positions.blue);
218	torben	892	formatPositions(sb, "green", positions.green);
219	torben	893	formatPositions(sb, "yellow", positions.yellow);
220	torben	892	formatPositions(sb, "red", positions.red);
221
222	torben	800
223	torben	805	sb.append( "</Document>\n" );
224	torben	799	sb.append( "</kml>\n" );
225
226			return sb.toString();
227			}
228	torben	809
229			protected String getRequestsFromFile(boolean multiple) throws IOException {
230			String kmlData = null;
231			String key;
232	torben	802
233	torben	809	if (multiple == false) {
234			key = "kmldata";
235			} else {
236			key = "kmldata-multi";
237			}
238
239			kmlData = cache.get(key);
240
241	torben	803	if (kmlData == null) {
242	torben	809	kmlData = formatXml( getRequestsFromFileWorker(multiple) );
243			cache.put(key, kmlData);
244	torben	803	kmlData += "<!-- from source -->";
245	torben	802	} else {
246	torben	803	kmlData += "<!-- cached -->";
247	torben	802	}
248	torben	809
249			return kmlData;
250			}
251	torben	810
252			boolean enabled(String param) {
253			if (param == null \|\| param.equals("")) {
254			return false;
255			}
256
257			int p = 0;
258			try {
259			p = Integer.parseInt(param);
260			} catch (Exception e) {}
261
262			return (p != 0);
263			}
264	torben	799
265	torben	809	@Override
266			protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
267	torben	802
268	torben	810	boolean multiple = enabled( req.getParameter("multi") );
269	torben	809
270			String kmlData = getRequestsFromFile(multiple);
271
272	torben	810	if ( enabled(req.getParameter("zip")) ) {
273	torben	799
274	torben	798	ByteArrayOutputStream baos = new ByteArrayOutputStream();
275	torben	799
276	torben	798	ZipOutputStream zip = new ZipOutputStream(baos);
277			zip.putNextEntry( new ZipEntry("trains.kml") );
278	torben	803	zip.write( kmlData.getBytes() );
279	torben	798	zip.closeEntry();
280			zip.close();
281	torben	799
282	torben	798	byte bytes[] = baos.toByteArray();
283	torben	799
284	torben	798	resp.setContentType(KMZ);
285			resp.setContentLength( bytes.length );
286			resp.getOutputStream().write(bytes);
287	torben	799
288	torben	798	} else {
289			resp.setContentType(KML);
290	torben	803	resp.getWriter().print( kmlData );
291	torben	798	}
292	torben	795	}
293			}