Registro del servidor web que mantiene un historial de requests de página, normalmente adjunto al final del archivo. Por lo general, se agrega información sobre la solicitud, incluida la dirección IP del cliente, la fecha/hora de la solicitud, la página solicitada, el código HTTP, los bytes servidos, el agente de usuario y la referencia.
Dados los registros de registro de un servidor web, encuentre el número total de respuestas HTTL exitosas (código 200) para las direcciones IP con respuestas exitosas.
Ejemplos:
Input : Sample Access Log 192.168.1.2 - - [17/Sep/2013:22:18:19 -0700] "GET /abc HTTP/1.1" 404 201 192.168.1.2 - - [17/Sep/2013:22:18:19 -0700] "GET /favicon.ico HTTP/1.1" 200 1406 192.168.1.2 - - [17/Sep/2013:22:18:27 -0700] "GET /wp/ HTTP/1.1" 200 5325 192.168.1.2 - - [17/Sep/2013:22:18:27 -0700] "GET /wp/wp-content/themes/twentytwelve/style.css?ver=3.5.1 HTTP/1.1" 200 35292 192.168.1.3 - - [17/Sep/2013:22:18:27 -0700] "GET /wp/wp-content/themes/twentytwelve/js/navigation.js?ver=1.0 HTTP/1.1" 200 863 Output : 192.168.1.3 1 192.168.1.2 3
Requisito previo: expresión regular en Java
// Java program to count the no. of IP address
// count for successful http response 200 code.
import java.io.*;
import java.util.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
class FindSuccessIpCount {
public static void findSuccessIpCount(String record)
{
// Creating a regular expression for the records
final String regex = "^(\\S+) (\\S+) (\\S+) " +
"\\[([\\w:/]+\\s[+\\-]\\d{4})\\] \"(\\S+)" +
" (\\S+)\\s*(\\S+)?\\s*\" (\\d{3}) (\\S+)";
final Pattern pattern = Pattern.compile(regex, Pattern.MULTILINE);
final Matcher matcher = pattern.matcher(record);
// Creating a Hashmap containing string as
// the key and integer as the value.
HashMap<String, Integer> countIP = new HashMap<String, Integer>();
while (matcher.find()) {
String IP = matcher.group(1);
String Response = matcher.group(8);
int response = Integer.parseInt(Response);
// Inserting the IP addresses in the
// HashMap and maintaining the frequency
// for each HTTP 200 code.
if (response == 200) {
if (countIP.containsKey(IP)) {
countIP.put(IP, countIP.get(IP) + 1);
}
else {
countIP.put(IP, 1);
}
}
}
// Printing the hashmap
for (Map.Entry entry : countIP.entrySet()) {
System.out.println(entry.getKey() + " " + entry.getValue());
}
}
public static void main(String[] args)
{
final String log = "123.123.123.123 - - [26/Apr/2000:00:23:48 -0400] \"GET /pics/wpaper.gif HTTP/1.0\" 200 6248 \"http:// www.jafsoft.com/asctortf/\" \"Mozilla/4.05 (Macintosh; I; PPC)\"\n"
+ "123.123.123.123 - - [26/Apr/2000:00:23:47 -0400] \"GET /asctortf/ HTTP/1.0\" 200 8130 \"http:// search.netscape.com/Computers/Data_Formats/Document/Text/RTF\" \"Mozilla/4.05 (Macintosh; I; PPC)\"\n"
+ "123.123.123.124 - - [26/Apr/2000:00:23:48 -0400] \"GET /pics/5star2000.gif HTTP/1.0\" 200 4005 \"http:// www.jafsoft.com/asctortf/\" \"Mozilla/4.05 (Macintosh; I; PPC)\"\n"
+ "123.123.123.123 - - [26/Apr/2000:00:23:50 -0400] \"GET /pics/5star.gif HTTP/1.0\" 404 1031 \"http:// www.jafsoft.com/asctortf/\" \"Mozilla/4.05 (Macintosh; I; PPC)\"\n"
+ "123.123.123.126 - - [26/Apr/2000:00:23:51 -0400] \"GET /pics/a2hlogo.jpg HTTP/1.0\" 200 4282 \"http:// www.jafsoft.com/asctortf/\" \"Mozilla/4.05 (Macintosh; I; PPC)\"\n"
+ "123.123.123.123 - - [26/Apr/2000:00:23:51 -0400] \"GET /cgi-bin/newcount?jafsof3&width=4&font=digital&noshow HTTP/1.0\" 200 36 \"http:// www.jafsoft.com/asctortf/\" \"Mozilla/4.05 (Macintosh; I; PPC)\"\n";
findSuccessIpCount(log);
}
}
Producción:
123.123.123.126 1 123.123.123.124 1 123.123.123.123 3
Publicación traducida automáticamente
Artículo escrito por Ajit kumar panigrahy y traducido por Barcelona Geeks. The original can be accessed here. Licence: CCBY-SA