[LOG4J2-2872] Unable to parse Custom Log Levels

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.13.3
• Component/s: Core
• Assignee: Piotr Karwasz
• Reporter: Alla Gofman
• Created: 17/Jun/20 17:00
• Updated: 24/Apr/22 18:00
• Resolved: 08/Apr/22 20:58

Description

When I set the logger level to custom value I get exception although my custom levels was created on init.  

WARN Error while converting string [alert] to type [class org.apache.logging.log4j.Level]. Using default value [null]. java.lang.IllegalArgumentException: Unknown level constant [ALERT].

 

The CustomLevel not added to Level.LEVELS ( ConcurrentMap<String, Level> LEVELS).

My configuration:

<Configuration status="DEBUG" monitorInterval="60">
    <Properties>
        <Property name="log-path">${cm.home}/../../proclog</Property
        <Property name="log-pattern">%d\{yyyy-MM-dd HH:mm:ss,SSS} %-2p [%t] (%logger\{1}:%L) - %m%n</Property>
    </Properties>
    <CustomLevels>
        <CustomLevel name="emerg" intLevel="0" />
        <CustomLevel name="alert" intLevel="1" />
        <CustomLevel name="crit" intLevel="2" />
        <CustomLevel name="err" intLevel="3" />
        <CustomLevel name="warning" intLevel="4" />
        <CustomLevel name="notice" intLevel="5" />
        <CustomLevel name="info" intLevel="6" />
        <CustomLevel name="debug" intLevel="7" />
    </CustomLevels>
    <Appenders>
        <Console name="Console-Appender" target="SYSTEM_OUT">
            <PatternLayout pattern="${log-pattern}" />
        </Console>

        <RollingFile name="Alerts-Appender" fileName="${log-path}/alerts.log" filePattern="${log-path}/alerts%i.log">
            <PatternLayout pattern="%date\{dd-MM-yy HH:mm:ss} | %level\{lowerCase=true} | %msg%n" />
            <Policies>
                <SizeBasedTriggeringPolicy size="10 MB" />
            </Policies>
            <DefaultRolloverStrategy fileIndex="min" max="5" />
        </RollingFile>
    </Appenders>
    <Loggers>
        <Logger name="ALERT_LOGGER" *level="alert"* additivity="false">
            <AppenderRef ref="Alerts-Appender" />
            <AppenderRef ref="Console-Appender" />
        </Logger>
        <Root level="debug">
            <AppenderRef ref="Console-Appender" />
        </Root>
    </Loggers>
</Configuration>

Please see log in debug:

2020-06-17 19:23:31,770 main DEBUG PluginManager 'Lookup' found 16 plugins
2020-06-17 19:23:31,772 main DEBUG Building Plugin[name=CustomLevel, class=org.apache.logging.log4j.core.config.CustomLevelConfig].
2020-06-17 19:23:31,773 main DEBUG createLevel(name="emerg", intLevel="0")
2020-06-17 19:23:31,773 main DEBUG Creating CustomLevel(name='emerg', intValue=0)
2020-06-17 19:23:31,774 main DEBUG Building Plugin[name=CustomLevel, class=org.apache.logging.log4j.core.config.CustomLevelConfig].
2020-06-17 19:23:31,774 main DEBUG createLevel(name="alert", intLevel="1")
2020-06-17 19:23:31,774 main DEBUG Creating CustomLevel(name='alert', intValue=1)
2020-06-17 19:23:31,774 main DEBUG Building Plugin[name=CustomLevel, class=org.apache.logging.log4j.core.config.CustomLevelConfig].
2020-06-17 19:23:31,775 main DEBUG createLevel(name="crit", intLevel="2")
2020-06-17 19:23:31,775 main DEBUG Creating CustomLevel(name='crit', intValue=2)
2020-06-17 19:23:31,775 main DEBUG Building Plugin[name=CustomLevel, class=org.apache.logging.log4j.core.config.CustomLevelConfig].
2020-06-17 19:23:31,776 main DEBUG createLevel(name="err", intLevel="3")
2020-06-17 19:23:31,776 main DEBUG Creating CustomLevel(name='err', intValue=3)
2020-06-17 19:23:31,776 main DEBUG Building Plugin[name=CustomLevel, class=org.apache.logging.log4j.core.config.CustomLevelConfig].
2020-06-17 19:23:31,776 main DEBUG createLevel(name="warning", intLevel="4")
2020-06-17 19:23:31,777 main DEBUG Creating CustomLevel(name='warning', intValue=4)
2020-06-17 19:23:31,777 main DEBUG Building Plugin[name=CustomLevel, class=org.apache.logging.log4j.core.config.CustomLevelConfig].
2020-06-17 19:23:31,777 main DEBUG createLevel(name="notice", intLevel="5")
2020-06-17 19:23:31,777 main DEBUG Creating CustomLevel(name='notice', intValue=5)
2020-06-17 19:23:31,778 main DEBUG Building Plugin[name=CustomLevel, class=org.apache.logging.log4j.core.config.CustomLevelConfig].
2020-06-17 19:23:31,778 main DEBUG createLevel(name="info", intLevel="6")
2020-06-17 19:23:31,779 main DEBUG Creating CustomLevel(name='info', intValue=6)
2020-06-17 19:23:31,779 main DEBUG Building Plugin[name=CustomLevel, class=org.apache.logging.log4j.core.config.CustomLevelConfig].
2020-06-17 19:23:31,780 main DEBUG createLevel(name="debug", intLevel="7")
2020-06-17 19:23:31,780 main DEBUG Creating CustomLevel(name='debug', intValue=7)
2020-06-17 19:23:31,780 main DEBUG Building Plugin[name=CustomLevels, class=org.apache.logging.log4j.core.config.CustomLevels].
2020-06-17 19:23:31,780 main DEBUG createCustomLevels(=\{CustomLevel[name=emerg, intLevel=0], CustomLevel[name=alert, intLevel=1], CustomLevel[name=crit, intLevel=2], CustomLevel[name=err, intLevel=3], CustomLevel[name=warning, intLevel=4], CustomLevel[name=notice, intLevel=5], CustomLevel[name=info, intLevel=6], CustomLevel[name=debug, intLevel=7]})

...

2020-06-17 19:23:31,864 main WARN Error while converting string [alert] to type [class org.apache.logging.log4j.Level]. Using default value [null]. java.lang.IllegalArgumentException: Unknown level constant [ALERT].2020-06-17 19:23:31,864 main WARN Error while converting string [alert] to type [class org.apache.logging.log4j.Level]. Using default value [null]. java.lang.IllegalArgumentException: Unknown level constant [ALERT]. at org.apache.logging.log4j.Level.valueOf(Level.java:320) at org.apache.logging.log4j.core.config.plugins.convert.TypeConverters$LevelConverter.convert(TypeConverters.java:288) at org.apache.logging.log4j.core.config.plugins.convert.TypeConverters$LevelConverter.convert(TypeConverters.java:284) at org.apache.logging.log4j.core.config.plugins.convert.TypeConverters.convert(TypeConverters.java:419) at org.apache.logging.log4j.core.config.plugins.visitors.AbstractPluginVisitor.convert(AbstractPluginVisitor.java:149) at org.apache.logging.log4j.core.config.plugins.visitors.PluginAttributeVisitor.visit(PluginAttributeVisitor.java:45) at org.apache.logging.log4j.core.config.plugins.util.PluginBuilder.generateParameters(PluginBuilder.java:258) at org.apache.logging.log4j.core.config.plugins.util.PluginBuilder.build(PluginBuilder.java:135) at org.apache.logging.log4j.core.config.AbstractConfiguration.createPluginObject(AbstractConfiguration.java:1002) at org.apache.logging.log4j.core.config.AbstractConfiguration.createConfiguration(AbstractConfiguration.java:942) at org.apache.logging.log4j.core.config.AbstractConfiguration.createConfiguration(AbstractConfiguration.java:934) at org.apache.logging.log4j.core.config.AbstractConfiguration.doConfigure(AbstractConfiguration.java:552) at org.apache.logging.log4j.core.config.AbstractConfiguration.initialize(AbstractConfiguration.java:241) at org.apache.logging.log4j.core.config.AbstractConfiguration.start(AbstractConfiguration.java:288) at org.apache.logging.log4j.core.LoggerContext.setConfiguration(LoggerContext.java:618) at org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:691) at org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:708) at org.apache.logging.log4j.core.LoggerContext.start(LoggerContext.java:263) at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:153) at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:45) at org.apache.logging.log4j.LogManager.getContext(LogManager.java:194) at org.apache.logging.log4j.spi.AbstractLoggerAdapter.getContext(AbstractLoggerAdapter.java:138) at org.apache.logging.slf4j.Log4jLoggerFactory.getContext(Log4jLoggerFactory.java:45) at org.apache.logging.log4j.spi.AbstractLoggerAdapter.getLogger(AbstractLoggerAdapter.java:48) at org.apache.logging.slf4j.Log4jLoggerFactory.getLogger(Log4jLoggerFactory.java:30) at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:358) at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:383) 

 

2020-06-17 19:23:31,866 main DEBUG createLogger(additivity="false", level="null", name="com.bmc.ctm.saas.alerts", includeLocation="null", =\{Alerts-Appender, Console-Appender}, ={}, Configuration(C:\Bitbucket\saas-alerts-collector\target\classes\log4j2.xml), Filter=null)

Issue Links

• links to: GitHub Pull Request #815