import java.io.*;

import java.util.HashMap;

import java.util.Map;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

public class LogSanitizer {

private final Map<String, String> sanitizationRules;

public LogSanitizer(String configFilePath) throws IOException {

// Load sanitization rules from the configuration file

sanitizationRules = loadSanitizationRules(configFilePath);

}

private Map<String, String> loadSanitizationRules(String configFilePath) throws IOException {

Map<String, String> rules = new HashMap<>();

try (BufferedReader reader = new BufferedReader(new FileReader(configFilePath))) {

String line;

while ((line = reader.readLine()) != null) {

String[] parts = line.split("=");

if (parts.length == 2) {

rules.put(parts[0].trim(), parts[1].trim());

}

}

}

return rules;

}

public String sanitizeLine(String line) {

String sanitizedLine = line;

for (Map.Entry<String, String> rule : sanitizationRules.entrySet()) {

String pattern = rule.getValue();

Pattern p = Pattern.compile(pattern);

Matcher m = p.matcher(sanitizedLine);

sanitizedLine = m.replaceAll(rule.getKey());

}

return sanitizedLine;

}

public static void main(String[] args) throws IOException {

//Example usage. Replace with your actual config file path

String configFilePath = "sanitization_rules.config";

LogSanitizer sanitizer = new LogSanitizer(configFilePath);

String logLine = "This is a log line with sensitive data: username=john.doe, password=secret123";

String sanitizedLogLine = sanitizer.sanitizeLine(logLine);

System.out.println("Original log line: " + logLine);

System.out.println("Sanitized log line: " + sanitizedLogLine);

logLine = "Email: test@example.com Phone: 555-123-4567";

sanitizedLogLine = sanitizer.sanitizeLine(logLine);

System.out.println("Original log line: " + logLine);

System.out.println("Sanitized log line: " + sanitizedLogLine);

}

}