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package dk.thoerup.traininfoservice; |
package dk.thoerup.traininfoservice; |
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import java.io.BufferedReader; |
import java.io.BufferedReader; |
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import java.io.ByteArrayOutputStream; |
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import java.io.File; |
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import java.io.FileInputStream; |
import java.io.FileInputStream; |
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import java.io.IOException; |
import java.io.IOException; |
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import java.io.InputStream; |
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import java.io.InputStreamReader; |
import java.io.InputStreamReader; |
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import java.text.ParseException; |
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import java.text.SimpleDateFormat; |
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import java.util.ArrayList; |
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import java.util.Date; |
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import java.util.List; |
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import java.util.Map; |
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import java.util.logging.Level; |
import java.util.logging.Level; |
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import java.util.logging.Logger; |
import java.util.logging.Logger; |
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import java.util.zip.GZIPInputStream; |
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import java.util.zip.ZipEntry; |
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import java.util.zip.ZipOutputStream; |
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import javax.servlet.ServletException; |
import javax.servlet.ServletException; |
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import javax.servlet.annotation.WebListener; |
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import javax.servlet.annotation.WebServlet; |
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import javax.servlet.http.HttpServlet; |
import javax.servlet.http.HttpServlet; |
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import javax.servlet.http.HttpServletRequest; |
import javax.servlet.http.HttpServletRequest; |
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import javax.servlet.http.HttpServletResponse; |
import javax.servlet.http.HttpServletResponse; |
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import dk.thoerup.traininfoservice.banedk.TimeoutMap; |
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@WebServlet(urlPatterns={"/RequestPlotter"}) |
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public class RequestPlotter extends HttpServlet { |
public class RequestPlotter extends HttpServlet { |
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private static final long serialVersionUID = 1L; |
private static final long serialVersionUID = 1L; |
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static final Logger log = Logger.getLogger(RequestPlotter.class.getName()); |
static final Logger log = Logger.getLogger(RequestPlotter.class.getName()); |
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static final String KML = "application/vnd.google-earth.kml"; |
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static final String KMZ = "application/vnd.google-earth.kmz"; |
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protected String getKml() { |
Map<String,String> cache = new TimeoutMap<String,String>(30*60*1000); |
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StringBuilder sb = new StringBuilder(); |
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class RequestPosition { |
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public String ip; |
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public Date time; |
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public String lat; |
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public String lng; |
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} |
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class PositionContainer { |
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List<RequestPosition> green = new ArrayList<RequestPosition>(); |
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List<RequestPosition> yellow = new ArrayList<RequestPosition>(); |
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List<RequestPosition> red = new ArrayList<RequestPosition>(); |
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} |
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boolean isGz(String fileStr) { |
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return fileStr.substring(fileStr.length() - 3).equals(".gz"); |
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} |
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protected PositionContainer getRequestsFromFileWorker(boolean multiple) throws IOException{ |
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PositionContainer positions = new PositionContainer(); |
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try { |
try { |
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FileInputStream fis = new FileInputStream("/var/log/apache2/access.log"); |
String files_single[] = {"/var/log/apache2/app_access.log"}; |
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BufferedReader in = new BufferedReader( new InputStreamReader(fis) ); |
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"}; |
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String files[]; |
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sb.append( "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" ); |
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sb.append( "<kml xmlns=\"http://www.opengis.net/kml/2.2\">\n" ); |
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sb.append( "<Document>\n" ); |
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String line; |
if (multiple == false) { |
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while ( (line=in.readLine()) != null) { |
files = files_single; |
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if (line.indexOf("LocateStation") == -1 ){ |
} else { |
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continue; |
files = files_multi; |
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} |
} |
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if (line.indexOf("latitude") == -1 ) { |
SimpleDateFormat df = new SimpleDateFormat("dd/MMM/yyyy:HH:mm:ss"); |
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Date now = new Date(); |
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for (String fileStr : files ) { |
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File f = new File(fileStr); |
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if ( !f.exists() ) { |
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continue; |
continue; |
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} |
} |
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String toks[] = line.split(" "); |
FileInputStream fis = new FileInputStream(fileStr); |
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String ip = toks[0]; |
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String time = toks[3].replace("[", ""); |
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String argpart = toks[6].split("?")[1]; |
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String args[] = argpart.split("&"); |
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String lat = args[0].split("=")[1]; |
InputStream input; |
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String lng = args[0].split("=")[1]; |
if ( isGz(fileStr)) { |
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input = new GZIPInputStream(fis); |
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sb.append( " <Placemark>" ); |
} else { |
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sb.append( " <description>IP=" + ip + " Time=" + time + "</description>" ); |
input = fis; |
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sb.append( " <Point><coordinates>" + lng + "," + lat + ",0</coordinates></Point>" ); |
} |
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sb.append( " </Placemark>" ); |
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BufferedReader in = new BufferedReader( new InputStreamReader(input) ); |
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String line; |
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while ( (line=in.readLine()) != null) { |
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if (line.indexOf("LocateStation") == -1 ){ |
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continue; |
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} |
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if (line.indexOf("latitude=") == -1 ) { |
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continue; |
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} |
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if (line.indexOf("longitude=") == -1) { |
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continue; |
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} |
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RequestPosition pos = new RequestPosition(); |
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String toks[] = line.split(" "); |
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pos.ip = toks[0]; |
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pos.time = df.parse( toks[3].replace("[", "") ); |
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String argpart = toks[6].split("\\?")[1]; |
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String args[] = argpart.split("&"); |
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pos.lat = args[0].split("=")[1]; |
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pos.lng = args[1].split("=")[1]; |
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long timediff = now.getTime() - pos.time.getTime(); |
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if ( timediff < (3*60*60*1000) ) { |
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positions.red.add(pos); //RED |
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} else if ( timediff < (24*60*60*1000)) { |
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positions.yellow.add(pos); //YELLOW |
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} else { |
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positions.green.add(pos); //GREEN |
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} |
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} |
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in.close(); |
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input.close(); |
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fis.close(); |
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} |
} |
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} catch (ParseException pe) { |
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sb.append( "</Document>\n" ); |
log.log(Level.SEVERE, "parseException", pe); |
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sb.append( "</kml>\n" ); |
throw new IOException(pe); |
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} catch (IOException e) { |
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} catch (Exception e) { |
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sb.append("<!-- error -->"); |
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log.log(Level.SEVERE, "getKml()", e); |
log.log(Level.SEVERE, "getKml()", e); |
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throw e; |
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} |
} |
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return positions; |
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} |
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protected void formatPositions(StringBuilder sb, String color, List<RequestPosition> list) { |
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sb.append( "<Folder>\n"); |
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sb.append( " <name>" ).append(color).append("</name>\n"); |
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sb.append( " <open>0</open>\n" ); |
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for(RequestPosition current : list) { |
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sb.append( " <Placemark>\n" ); |
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sb.append( " <styleUrl>#").append(color).append("</styleUrl>\n" ); |
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sb.append( " <description>IP=").append(current.ip).append(" Time=").append(current.time).append("</description>\n" ); |
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sb.append( " <Point><coordinates>").append(current.lng).append(",").append(current.lat).append(",0</coordinates></Point>\n" ); |
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sb.append( " </Placemark>\n" ); |
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} |
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return sb.toString(); |
sb.append("</Folder>\n"); |
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} |
} |
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@Override |
protected String formatXml(PositionContainer positions) { |
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protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { |
StringBuilder sb = new StringBuilder(1024*1024); |
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resp.setContentType("application/vnd.google-earth.kml"); |
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resp.getWriter().print( getKml() ); |
sb.append( "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" ); |
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sb.append( "<kml xmlns=\"http://www.opengis.net/kml/2.2\">\n" ); |
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sb.append( "<Document>\n" ); |
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sb.append( " <description><![CDATA["); |
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sb.append( " Green:").append(positions.green.size()).append("<br/>\n"); |
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sb.append( " Yellow:").append(positions.yellow.size()).append("<br/>\n"); |
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sb.append( " Red:").append(positions.red.size()).append("\n"); |
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sb.append( " ]]></description>"); |
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sb.append( " <Style id=\"red\">\n" ); |
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sb.append( " <IconStyle><Icon><href>http://maps.google.com/mapfiles/kml/paddle/red-circle.png</href></Icon></IconStyle>\n" ); |
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sb.append( " </Style>\n"); |
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sb.append( " <Style id=\"yellow\">\n" ); |
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sb.append( " <IconStyle><Icon><href>http://maps.google.com/mapfiles/kml/paddle/ylw-circle.png</href></Icon></IconStyle>\n" ); |
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sb.append( " </Style>\n" ); |
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sb.append( " <Style id=\"green\">\n" ); |
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sb.append( " <IconStyle><Icon><href>http://maps.google.com/mapfiles/kml/paddle/grn-circle.png</href></Icon></IconStyle>\n" ); |
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sb.append( " </Style>\n\n" ); |
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/* |
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String overlay = |
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" <ScreenOverlay>" + |
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" <name>Absolute Positioning: Top left</name>" + |
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" <description>Absolute Positioning: Top left</description>" + |
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" <visibility>1</visibility>" + |
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" <Icon>" + |
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" <href>http://code.google.com/apis/kml/documentation/top_left.jpg</href>" + |
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" </Icon>" + |
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" <overlayXY x=\"0\" y=\"1\" xunits=\"fraction\" yunits=\"fraction\"/>" + |
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" <screenXY x=\"0\" y=\"1\" xunits=\"fraction\" yunits=\"fraction\"/>" + |
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" <rotationXY x=\"0\" y=\"0\" xunits=\"fraction\" yunits=\"fraction\"/>" + |
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" <size x=\"0\" y=\"0\" xunits=\"fraction\" yunits=\"fraction\"/>" + |
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" </ScreenOverlay>" ; |
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sb.append(overlay); |
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*/ |
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formatPositions(sb, "green", positions.green); |
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formatPositions(sb, "yellow", positions.yellow); |
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formatPositions(sb, "red", positions.red); |
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sb.append( "</Document>\n" ); |
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sb.append( "</kml>\n" ); |
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return sb.toString(); |
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} |
} |
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protected String getRequestsFromFile(boolean multiple) throws IOException { |
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String kmlData = null; |
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String key; |
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if (multiple == false) { |
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key = "kmldata"; |
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} else { |
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key = "kmldata-multi"; |
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} |
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kmlData = cache.get(key); |
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if (kmlData == null) { |
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kmlData = formatXml( getRequestsFromFileWorker(multiple) ); |
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cache.put(key, kmlData); |
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kmlData += "<!-- from source -->"; |
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} else { |
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kmlData += "<!-- cached -->"; |
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} |
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return kmlData; |
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} |
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boolean enabled(String param) { |
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if (param == null || param.equals("")) { |
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return false; |
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} |
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int p = 0; |
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try { |
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p = Integer.parseInt(param); |
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} catch (Exception e) {} |
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return (p != 0); |
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} |
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@Override |
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protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { |
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boolean multiple = enabled( req.getParameter("multi") ); |
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String kmlData = getRequestsFromFile(multiple); |
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if ( enabled(req.getParameter("zip")) ) { |
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ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
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ZipOutputStream zip = new ZipOutputStream(baos); |
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zip.putNextEntry( new ZipEntry("trains.kml") ); |
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zip.write( kmlData.getBytes() ); |
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zip.closeEntry(); |
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zip.close(); |
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byte bytes[] = baos.toByteArray(); |
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resp.setContentType(KMZ); |
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resp.setContentLength( bytes.length ); |
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resp.getOutputStream().write(bytes); |
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} else { |
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resp.setContentType(KML); |
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resp.getWriter().print( kmlData ); |
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} |
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} |
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} |
} |