You shouldn't need to do this. What is different about your layout than what
comes with Log4j? If you simply have a custom pattern or 2 then you would just
implement those as converters.
Ralph
> On May 18, 2015, at 5:41 AM, Chathura Priyankara <priyankara...@gmail.com>
> wrote:
>
> I have to convert a pattern layout written for log4j 1.2. to log4j2.
> Following code snippet shows a part of it. I have searched a lot about this
> but couldn't find a proper guide.
> Can anyone please give me a brief guide about how to do this conversion ?
>
> Any help is highly appreciated!
>
> public class CustomPatternLayout extends PatternLayout {
>
>
> public static final String DEFAULT_PATTERN = "[%T][%S]";
>
> private static String customPattern = DEFAULT_PATTERN;
>
>
> public CustomPatternLayout(String pattern) {
> super(pattern);
> }
>
> public synchronized void setCustomPattern(String customPattern) {
> CustomPatternLayout.customPattern = customPattern;
> }
>
>
> private static class customPatternParser extends PatternParser {
>
> protected void finalizeConverter(char c) {
> PatternConverter pc = null;
> switch (c) {
> case 'P':
> pc = new UserNamePatternConverter(formattingInfo,
> extractPrecisionOption());
> break;
> .
> .
> .
> default:
> super.finalizeConverter(c);
> }
> if (pc != null) {
> currentLiteral.setLength(0);
> addConverter(pc);
> }
> }
>
> private abstract static class CustomNamedPatternConverter extends
> PatternConverter {
>
> private int precision;
>
> public CustomNamedPatternConverter(FormattingInfo formattingInfo, int
> precision) {
> super(formattingInfo);
> this.precision = precision;
> }
>
> protected abstract String getFullyQualifiedName(LoggingEvent event);
>
> public String convert(LoggingEvent event) {
> String n = getFullyQualifiedName(event);
> if (n == null) {
> return "";
> }
> if (precision <= 0) {
> return n;
> } else {
> int len = n.length();
> int end = len - 1;
> for (int i = precision; i > 0; i--) {
> end = n.lastIndexOf('.', end - 1);
> if (end == -1) {
> return n;
> }
> }
> return n.substring(end + 1, len);
> }
> }
> }
>
> private static class MyPatternConverter extends
> CustomNamedPatternConverter {
>
> public MyPatternConverter(FormattingInfo formattingInfo, int
> precision) {
> super(formattingInfo, precision);
> }
>
> public String getFullyQualifiedName(LoggingEvent event) {
> int userId = //Get user Id
> if ( . . .) {
> return new CustomPatternLayout(customPattern).format(event);
> }
> return someOther;
> }
> }
> }
> }
> Thanks in advance.
>
> --
> Chathura Priyankara,
> Faculty of Information Technology,
> University of Moratuwa.
> Blog : www.codeoncloud.blogspot.com
