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package dk.thoerup.traininfoservice;
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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;
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import java.io.FilenameFilter;
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import java.io.IOException;
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import java.io.InputStream;
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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.Arrays;
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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;
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import java.util.logging.Logger;
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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;
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import javax.servlet.annotation.WebServlet;
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import javax.servlet.http.HttpServlet;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import dk.thoerup.genericjavautils.TimeoutMap;
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@WebServlet(urlPatterns={"/RequestPlotter"})
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public class RequestPlotter extends HttpServlet {
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private static final long serialVersionUID = 1L;
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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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Map<String,String> cache = new TimeoutMap<String,String>(30*60*1000);
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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> blue = new ArrayList<RequestPosition>();
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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 File[] getFiles(int count) {
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File accessLogDir = new File("/home/app/domain1/logs/access/");
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//File accessLogDir = new File("/home/torben/inst/glassfishv3/glassfish/domains/domain1/logs/access/");
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File logFiles[] = accessLogDir.listFiles( new FilenameFilter() {
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@Override
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public boolean accept(File dir, String name) {
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//log.info("name:" + name);
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return name.startsWith("server_access_log");
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}
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});
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Arrays.sort(logFiles);
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if (logFiles == null) {
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File[] empty = {};
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log.info("file array was empty");
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return empty;
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}
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int from = (count>logFiles.length) ? 0 : logFiles.length - (count);
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int to = logFiles.length;
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return Arrays.copyOfRange(logFiles, from, to);
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}
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protected PositionContainer getRequestsFromFileWorker(int count) throws IOException{
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PositionContainer positions = new PositionContainer();
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try {
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File files[] = getFiles(count);
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SimpleDateFormat df = new SimpleDateFormat("dd/MMM/yyyy:HH:mm:ss");
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Date now = new Date();
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for (File f : files ) {
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log.info("Parsing file: " + f.getName() );
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if ( !f.exists() ) {
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continue;
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}
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InputStream input = new FileInputStream(f);
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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].replaceAll("\"", "");
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pos.time = df.parse( toks[2].replace("\"", "") );
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String argpart = toks[5].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 if ( timediff < (7*24*60*60*1000)) {
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positions.green.add(pos); //GREEN
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} else {
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positions.blue.add(pos); //BLUE
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}
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}
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in.close();
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input.close();
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}
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} catch (ParseException pe) {
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log.log(Level.SEVERE, "parseException", pe);
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throw new IOException(pe);
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} catch (IOException e) {
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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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/* old apache code
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protected PositionContainer getRequestsFromFileWorker(boolean multiple) throws IOException{
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PositionContainer positions = new PositionContainer();
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try {
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String files_single[] = {"/var/log/apache2/app_access.log"};
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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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if (multiple == false) {
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files = files_single;
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} else {
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files = files_multi;
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}
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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;
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}
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FileInputStream fis = new FileInputStream(fileStr);
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InputStream input;
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if ( isGz(fileStr)) {
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input = new GZIPInputStream(fis);
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} else {
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input = fis;
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}
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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 if ( timediff < (7*24*60*60*1000)) {
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positions.green.add(pos); //GREEN
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} else {
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positions.blue.add(pos); //BLUE
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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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log.log(Level.SEVERE, "parseException", pe);
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throw new IOException(pe);
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} catch (IOException e) {
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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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int count=0;
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for(RequestPosition current : list) {
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String id = color + count++;
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sb.append( " <Placemark id=\"" + id + "\">\n" );
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sb.append( " <name>").append(current.time).append("</name>\n" );
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sb.append( " <styleUrl>#").append(color).append("</styleUrl>\n" );
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sb.append( " <description><![CDATA[IP=").append(current.ip).append("<br/> ]]></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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sb.append("</Folder>\n");
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}
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protected String formatXml(PositionContainer positions) {
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StringBuilder sb = new StringBuilder(1024*1024);
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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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sb.append( " <description><![CDATA[");
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sb.append( " Red:").append(positions.red.size()).append(" (whithin 3 hours)<br/>\n");
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sb.append( " Yellow:").append(positions.yellow.size()).append(" (within 24 hours)<br/>\n");
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sb.append( " Green:").append(positions.green.size()).append(" (within one week)<br/>\n");
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sb.append( " Blue:").append(positions.blue.size()).append(" (older)<br/>\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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sb.append( " <Style id=\"blue\">\n" );
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sb.append( " <IconStyle><Icon><href>http://maps.google.com/mapfiles/kml/paddle/blu-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, "blue", positions.blue);
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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(int count) throws IOException {
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String kmlData = null;
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String key;
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key = "kmldata-" + count;
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kmlData = cache.get(key);
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if (kmlData == null) {
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kmlData = formatXml( getRequestsFromFileWorker(count) );
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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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int getCount(String param) {
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if (param == null || param.equals("")) {
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return 1;
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}
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return Integer.parseInt(param);
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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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int count = getCount( req.getParameter("count") );
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if (count > 30) //limit to 30 days
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count = 30;
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if (count < 0) //negative count is not allowed
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count = 0;
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String kmlData = getRequestsFromFile(count);
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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.setHeader("Content-disposition", "attachment; filename=Traininfo-requestplotter.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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}
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