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Questions tagged [pattern-layout]

This tag refers to the method of formatting the logging output by specifying a formatting string, in a family of logging libraries based on log4j. Please use this tag along with the appropriate logging library tag.

Pattern layout originates from the popular Java logging library, log4j. The library influenced a wide range of clones and implementations in various languages. One of its core concepts, the pattern layout, which allows users to customize their logging output by specifying a pattern, comes along with log4j-inspired libraries in a fairly similar manner.

Pattern layout definitions:

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Log4j2 not able to apply pattern layout %replace feature more than 2 times in sequence

%replace{%replace{%replace{%msg}{regex1}{substitution1}}{regex2}{substitution2}}{regex3}{substitution3} I'm trying to replace the regex pattern from my log and it works properly. When %replace is used at max twice, but when I try to replace the…
Bipin Kumar
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Log4cplus: How can I integrate string into patternLayout?

I want to configure Log4cplus appender, using configuration file, to log messages that include parameters from my application (For example: logging the name of the current function that call the log4cplus logger). I know that Log4cplus has the…
N.avraham
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Log4j - different patternlayouts for same logfile

I have an application where I want to log one thing if a thread has been started, and one thing for the mainthread. Let's say a thread is started, I want the threadname to be in the log. I added %t to the patternlayout, but this also logs the name…
user16655
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How to pick host name in Per service logs in WSO2 ESB

I am making Per service Logs in WSO2 ESB according to their official link. The layout conversion pattern is working fine but it is not picking up the "HostName". I don't know whats the problem , WSO2 using this pattern itself in "log4j.properties"…
omer khalid
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Specify timezone and method name in pattern-formatter for logging in JBoss AS7

How can I specify IST Timezone and the method name in the pattern-formatter of JBoss AS7 logging subsystem? I found that we can specify the UTC timezone as: But what…
Tapas Bose
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log4php- Set layout pattern to display filename

I am using log4php to log messages in php. I have the following xml configuration …
mtk
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Log4j difference between dollar and percent patterns in layout

Answering this this question about log4j2 left me more confused than enlightened. There seem to be several ways of specifying the current date (with custom format) in log4j2 configuration files: %d{HH-mm-ss} (Layouts) ${date:HH-mm-ss}…
knittl
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org.apache.logging.log4j.core.pattern.PatternParser can not access "newInstance" method of Custom Pattern Converter plugin class

I am implementing log4j custom pattern converter. During runtime when it tries to invoke "newInstance" method of converter class, it fails with error : "Error creating converter for cm java.lang.IllegalAccessException: Class…
Namrata
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How to get Layout property from Custom appender(Log4net)?

I have implemented a CustomAppender using Log4net .How can I access Layout property from patternLayout in the Appender. public class CutomAppender : AppenderSkeleton { protected override void Append(LoggingEvent loggingEvent) { //My…
Gangz
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log4j2 main arguments does not get picked up by the names

I am trying to write log4j2 logs using a specific pattern:
dmachop
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log4j2 with custom appender and patternlayout not working

I am using log4j2 in my web project. I was trying to put logs directly to kafka by extending abstractAppender. As per documentation my understanding is that i can specify patternlayout for a custom appender and with that being set, my logger will…
user3679447
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How to decrease AJP threads with custom log4j layout class

I have written a custom jar to be called from log4j that will mask sensitive data before being written log log. The class works as expected but now my ajp threads have increased 5x. In log4j I just changed: -layout…
Benny
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Customizing Log4j to filter PatternLayout

I have just starting migrating to WLS 10.x and have noticed that the thread name [%t] for WL is quite verbose and more informative than I need for my deployment needs. Ultimately, I only care about the thread ID but WL gives me this:< [ACTIVE]…
Timothy C. Quinn
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Log4j PatternLayout - Prepend value to %c

My current Conversion Pattern within my log4j.xml file is as follows: I have a simple requirement to prepend %c (which is 'ERROR') with the word 'Runtime'. Using the pattern…
Candyfloss
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Logback PatternLayout class name format problem with Spring Boot 3.0

I would like to ask your help. I have a small Spring Boot Application project with v2.7.1. I started to change the version to v3.0.6 and I faced with a logback problem. In my logback xml file I use %C{1.} for PatternLayout but it does not work, I…
Bernadett Kovács-Szenti
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