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| import org.apache.logging.log4j.core.pattern.LogEventPatternConverter; | |
| import java.util.regex.Matcher; | |
| import java.util.regex.Pattern; | |
| @Plugin(name = "EraseSensitiveData", category = "Converter") | |
| @ConverterKeys({ "msg" }) | |
| public class EraseSensitiveDataConverter extends LogEventPatternConverter { | |
| private static final String NAME = "msg"; | |
| private static final String JSON_REPLACEMENT_REGEX_1 = "\"$1\":\"٩(◕‿◕｡)۶\""; | |
| private static final String JSON_REPLACEMENT_REGEX_2 = "\"$1\":\"(づ ◕‿◕ )づ\""; | |
| private static final String JSON_KEYS = "sensitive1|sensitive2" | |
| private static final Pattern JSON_PATTERN = Pattern.compile(/"(${JSON_KEYS})": "([^"]+)"/) | |
| public EraseSensitiveDataConverter(String[] options) { | |
| super(NAME, NAME); // What !? | |
| } | |
| public static EraseSensitiveDataConverter newInstance(final String[] options) { | |
| return new EraseSensitiveDataConverter(options); | |
| } | |
| @Override | |
| public void format(LogEvent logEvent, StringBuilder outputMsg) { | |
| Message message = logEvent.getMessage(); | |
| Message outMessage = new ParameterizedMessage(message.getFormattedMessage(), | |
| message.getParameters(), | |
| message.getThrowable()); | |
| outputMsg.append(this.converter(outMessage.getFormat())); | |
| } | |
| private String converter(String message) { | |
| StringBuffer buffer = new StringBuffer(); | |
| Matcher matcher = JSON_PATTERN.matcher(message); | |
| int i = 1; | |
| while (matcher.find()) { | |
| matcher.appendReplacement(buffer, i%2==0 ? JSON_REPLACEMENT_REGEX_1 : JSON_REPLACEMENT_REGEX_2); | |
| i++; | |
| } | |
| matcher.appendTail(buffer); | |
| return buffer.toString(); | |
| } | |
| } |
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