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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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log4j PatternLayout Regex for throwables

I noticed from "https://logging.apache.org/log4j/2.x/manual/layouts.html#PatternLayout" that throwables (like exceptions) can be formatted (using '%throwable' : '%throwable{100}/'%throwable{short}' etc...). Suppose I have the following in Java…
idanH
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PatternConverter not working with async appender in log4j2.17.X

We use PatternConverter to make custom conversion patterns to include the sesionId in the logs ,which is working in SMTP/console and file appenders without any issue however if we wrap the appenders with Async(used SMTP here),its coming empty in the…
S V
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Format logs for PyFlink application with different pattern for the Python part

I have a Python application running in PyFlink. Is there a way of saying "Apply this pattern to the logs produced by the python code, and this other pattern to every other log?" I'd like to format the log messages that are coming from my Python code…
Savir
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Regex not working when passed as a patternproperty

The regex i am trying is to find the word next to another and replace it! When i pass this as a pattern property it doesnt seem to work. But doesnt seem to work in the code. I have tried this regex to check with a default java program and it seems…
Yatish Kadam
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Showing the content of toString of exceptions with log2j4

There are some exception classes that format a detailed message when we call toString(), but log4j v2 is just showing the stacktrace with the message set with Exception(String) constructor. Are there ways to ask PatternLayout to log the "toString()"…
Luciano
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Multiple markers in logback pattern layout

I'm currently playing around with Logback/Markers and I haven't found a way to format the output of markers. Because of the issues with MDC in combination with Play I'd like to misuse Markers to print username, correlationId and host with every log…
Daniel
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Print intLevel in log4j2

You can see in https://logging.apache.org/log4j/2.x/manual/customloglevels.html the numerical values corresponding to built-in log4j2 logging levels, for example INFO->400. How can you refer to it in patternlayout resp. in JDBC Logger…
Géza
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PatternLayout not substituting values from ThreadContext in Java

I am tying to create a PatternLayout object in Java code that will have its values substituted from the ThreadContext, using the %X (and %d) placeholder. private PatternLayout patternLayout = PatternLayout.newBuilder() …
MeanwhileInHell
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log4j 2 - collor logs for intelij console

I try to config log4j to appends loggs in diffrent color per log type (INFO, ERROR, DEBUG etc.) Here is my log4j2.xml: applogs …
Patric
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log4j2 writing method and class

I'm using log4j2 in a java program.. this is the line of code where it is initialized private static final Logger logger = LogManager.getLogger("application- log"); and this is the configuration file where the format is decided
Gian Piero
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Log4j multiple pattern layout

I'm pretty new with log4j. I want to display log messages with these infos: log timestamp, priority, fully qualified class name, the message, class name only. I try to display twice the CATEGORY, once with a ConversionPattern, and once with an other…
Francesco
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How to put data in logs using pattern layout log4j2

I am defining log4j2 configuration in log4j2-spring.xml. In this i am defining pattern layout as following:
Awadesh
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Achieving a specific format in Apache Log4j

I want to have following format in my log file in Log4j {date:yyyy-MM-dd HH:mm:ss:SSS} {level} [{thread name- thread Id}]:[{file}:{line}] {message} How do I go about it?
Ram
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