This documentation is for WSO2 Stream Processor 4.3.0. View documentation for the latest release.

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This section explains how to enable logging at different levels for WSO2 SP. This is done by adding the required configurations in <SP_HOME>/conf<PROFILE>/log4j2.xml file.

<Configuration>
<Appenders>
    <Console name="CARBON_CONSOLE" target="SYSTEM_OUT">
        <PatternLayout pattern="[%d] %5p {%c} - %m%ex%n"/>
    </Console>
    <RollingFile name="CARBON_LOGFILE" fileName="${sys:carbon.home}/logs/carbon.log"
                 filePattern="${sys:carbon.home}/logs/carbon-%d{MM-dd-yyyy}.log">
        <PatternLayout pattern="[%d] %5p {%c} - %m%ex%n"/>
        <Policies>
            <TimeBasedTriggeringPolicy/>
        </Policies>
    </RollingFile>
</Appenders>
<Loggers>
    <Root level="info">
        <AppenderRef ref="CARBON_CONSOLE"/>
        <AppenderRef ref="CARBON_LOGFILE"/>
    </Root>
</Loggers>
</Configuration>

The above configuration contains the following elements:

Appenders

The logs you enable can be printed in multiple destinations known as appenders. The following are the appenders that are currently supported.

  • Carbon Console
    Carbon console is the console in which WSO2 SP is run. 
  • Log file 

Loggers

e.g., To enable debug logs on the org.wso2.carbon.kernel.runtime package, you can add the following entry to the log4j2.xml file.

<Logger name="org.wso2.carbon.kernel.runtime" level="debug"/>

Viewing logs

Logs are published to  the console. In addition, when you enable one or more logs for a specific profile, those logs are printed in the carbon.log file that is automatically created in the <SP_HOME>/wso2/<PROFILE>/log directory.

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