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Error adding timestamp to log file name (log4j2)


Error adding timestamp to log file name (log4j2)

By : NawabSaheb
Date : November 22 2020, 09:00 AM
Any of those help The FileAppender only accepts a file name, not a pattern. You can use a lookup to get the date if that is what you want.
code :


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How do I write to a CSV file using the apache log4j2 functionality and the log4j2 configuration file?

How do I write to a CSV file using the apache log4j2 functionality and the log4j2 configuration file?


By : Joss
Date : March 29 2020, 07:55 AM
it should still fix some issue Following the Log4j 2 documentation of the CSV Layout it depends on Apache Commons CSV.
Find below working snippets.
code :
...
<dependencies>
    <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-api</artifactId>
        <version>2.6.2</version>
    </dependency>
    <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-core</artifactId>
        <version>2.6.2</version>
    </dependency>
    <dependency>
        <groupId>org.apache.commons</groupId>
        <artifactId>commons-csv</artifactId>
        <version>1.4</version>
    </dependency>
</dependencies>
...
<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="WARN">
    <Properties>
        <Property name="csvLog.fileName">csvLog</Property>
        <Property name="file-header">column1,column2,column3</Property>
    </Properties>
    <Appenders>
        <RollingFile name="csvFile" 
                     fileName="${csvLog.fileName}.tmp"
                     filePattern="${csvLog.filename}-%d{MM-dd-yyyy}-%i.csv" >
            <CsvParameterLayout delimiter="," header="${file-header}\n"/>
            <Policies>
                <TimeBasedTriggeringPolicy interval="1" modulate="true" />
                <SizeBasedTriggeringPolicy size="10 MB" />
            </Policies>
            <DefaultRolloverStrategy max="200" />
        </RollingFile>
    </Appenders>
    <Loggers>
        <Root level="debug" additivity="false">
            <AppenderRef ref="csvFile" level="debug"/>
        </Root>
    </Loggers>
</Configuration>
Logger logger = LogManager.getLogger(...);
logger.info("sample output", "foo", "bar");
column1,column2,column3
foo,bar
appenders = csvFile

appender.csvFile.type = RollingFile
appender.csvFile.name = CSVFILE
appender.csvFile.fileName = csvLog.tmp
appender.csvFile.filePattern= csvLog-%d{MM-dd-yyyy}-%i.csv
appender.csvFile.layout.type = CsvParameterLayout
appender.csvFile.layout.delimiter = ,
appender.csvFile.layout.header = column1,column2,column3\n
appender.csvFile.policies.type = Policies
appender.csvFile.policies.time.type = TimeBasedTriggeringPolicy
appender.csvFile.policies.time.interval = 1
appender.csvFile.policies.time.modulate = true
appender.csvFile.policies.size.type = SizeBasedTriggeringPolicy
appender.csvFile.policies.size.size=10MB
appender.csvFile.strategy.type = DefaultRolloverStrategy
appender.csvFile.strategy.max = 200

rootLogger.level = debug
rootLogger.appenderRefs = csvFile
rootLogger.appenderRef.csvFile.ref = CSVFILE
Log4j2: Programmatically create file appender with timestamp in the filename

Log4j2: Programmatically create file appender with timestamp in the filename


By : Eager Student
Date : March 29 2020, 07:55 AM
Does that help Apparently StrSubstitutor can help in this situation.
code :
final LoggerContext ctx = (LoggerContext) LogManager.getContext(false);
final Configuration config = ctx.getConfiguration();
String fileName = config.
              getStrSubstitutor().replace("file-with-date-${date:yyyy-MM-dd}.log");

FileAppender fileAppender = FileAppender.newBuilder()
        .withLayout(layout)
        .withFileName(filename)
        .withName("pattern")
        .build();
SonarQube startup Error: log4j2 could not find a logging implementation. Please add log4j2 to the filepath

SonarQube startup Error: log4j2 could not find a logging implementation. Please add log4j2 to the filepath


By : simonta55
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , I resolved this issue, I did it by following the instructions found here: Elasticsearch installation : Error missing 'server' JVM at ...jvm.dll , Download and install Java
Go to
How to save logs into file with timestamp with log4j2

How to save logs into file with timestamp with log4j2


By : yqyh1994
Date : March 29 2020, 07:55 AM
wish of those help i have a little problem. I had to change my logging implementation from org.apache.commons.logging to org.apache.logging.log4j. I saved my logs into a "log" directory and each file got a appended timestamp. I used the following .xml file: , I found the solution on my own:
code :
<RollingFile 
    name="FILE" fileName="/logs/app-${date:yyyy-MM-dd'_'HH-mm-ss}.log" 
    filePattern="logs/app-%d{yyyy-MM-dd}-%i.log"
    ignoreExceptions="false">
        <PatternLayout>
            <Pattern>%d{yyyy-MM-dd'_'HH-mm-ss} %p %m%n</Pattern>
        </PatternLayout>
        <TimeBasedTriggeringPolicy />
</RollingFile> 
Gettting log4j error ERROR StatusLogger "No log4j2 configuration file found" while adding jmeter dependencies

Gettting log4j error ERROR StatusLogger "No log4j2 configuration file found" while adding jmeter dependencies


By : Thonny Cleuton
Date : March 29 2020, 07:55 AM
will help you Do you have a log4j2.xml under /src/test/resources ?
Here is an example configuration:
code :
<?xml version="1.0" encoding="UTF-8"?>
<Configuration>

    <Properties>
        <Property name="path">target</Property>
        <Property name="logFileName">integration-tests-logs</Property>
        <Property name="logPattern">%d{HH:mm:ss,SSS} %-5.5p %28.28c{2}| %m%n</Property>
    </Properties>

    <Appenders>
        <Console name="console" target="SYSTEM_OUT">
            <PatternLayout pattern="${logPattern}"/>
        </Console>
        <File name="logfile" fileName="${path}/${logFileName}.log" append="true">
            <PatternLayout pattern="${logPattern}"/>
        </File>
    </Appenders>

    <Loggers>
        <Root level="DEBUG">
            <AppenderRef ref="console"/>
            <AppenderRef ref="logfile"/>
        </Root>
        <Logger name="org.eclipse.jetty" level="INFO" additivity="false">
            <AppenderRef ref="console"/>
        </Logger>
    </Loggers>
</Configuration>
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