Hi Gary,
Thanks for the prompt response.
(For my purpose cannot use Thread context maps because these log
information are highly user configurable)
Could you please tell me one thing. If I have custom pattern layout plugin
eg: (plugin name = CustomPatternLayout).
How would I configure this for a particular appender using log4j2.xml?
Eg:
<Console name="CONSOLE" target="SYSTEM_OUT">
<PatternLayout pattern="%U%D[%T]"/>
</Console>
Here how can I configure console appender to use my CustomPatternLayout ?
Thanks.
On Mon, May 18, 2015 at 8:46 PM, Gary Gregory <[email protected]>
wrote:
> Can you achieve the same result with Thread context perhap?
>
> Gary
>
>
> -------- Original message --------
> From: Chathura Priyankara <[email protected]>
> Date: 05/18/2015 07:40 (GMT-08:00)
> To: Log4J Developers List <[email protected]>
> Subject: Re: [Dev][log4j2] How to create custom pattern layout in log4j2
>
> Hi Ralph,
>
> There are some custom information that I need to log. Please see the
> following log4j properties.
>
> log4j.appender.CONSOLE.layout=com.test.custom.PatternLayoutClass
> log4j.appender.CONSOLE.layout.ConversionPattern=[%d] %P%5p {%c} - %x %m%n
> log4j.appender.CONSOLE.layout.CustomPattern=%U%@%D[%T]
>
> Here some custom Conversion characters such as U, D etc. are used. If the
> conversion type is %P
> for ConversionPattern then the log information of CustomPattern will print.
> Can you please tell me how could I do the same thing with log4j2 ?
>
> Thank you very much for the reply.
>
>
>
> On Mon, May 18, 2015 at 6:25 PM, Ralph Goers <[email protected]>
> wrote:
>
>> 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 <[email protected]>
>> 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
>>
>>
>
>
> --
> Chathura Priyankara,
> Faculty of Information Technology,
> University of Moratuwa.
> Blog : www.codeoncloud.blogspot.com
>
--
Chathura Priyankara,
Faculty of Information Technology,
University of Moratuwa.
Blog : www.codeoncloud.blogspot.com
