log4j2-container.xml

<?xml version="1.0" encoding="UTF-8"?>
<!-- Logging configuration for DSpace container.

     Writes [dspace.dir]/log/dspace.log exactly like log4j2.xml does outside of a container, and
     mirrors the same events to stdout so that "docker logs" keeps working. Point the container at
     this file with the LOGGING_CONFIG environment variable (see docker-compose-rest.yml).

     NOTE: /dspace/log only survives a container recreate when it is mounted as a volume. -->
<Configuration strict='true'
               xmlns='http://logging.apache.org/log4j/2.0/config'>

    <Properties>
        <!-- Log file directory. "dspace.dir" is fixed to /dspace in the image (see Dockerfile),
             so the log directory is /dspace/log. Override with the DSPACE_LOG_DIR env variable
             when the container installs DSpace somewhere else. -->
        <Property name='log.dir'>${env:DSPACE_LOG_DIR:-/dspace/log}</Property>

        <!-- Log level for all DSpace-specific code (org.dspace.*)
             Possible values (from most to least info):
	     DEBUG, INFO, WARN, ERROR, FATAL -->
        <Property name='loglevel.dspace'>INFO</Property>

        <!-- Log level for other third-party tools/APIs used by DSpace
             Possible values (from most to least info):
	     DEBUG, INFO, WARN, ERROR, FATAL -->
        <Property name='loglevel.other'>INFO</Property>

        <!-- Level of the copy that is echoed to the container console ("docker logs").
             dspace.log always receives everything; raise this to WARN, or set it to OFF, to keep
             the container output small once dspace.log is being collected. -->
        <Property name='loglevel.console'>${env:DSPACE_LOG_CONSOLE_LEVEL:-INFO}</Property>
    </Properties>

    <Appenders>
        <!-- A1 is for most DSpace activity -->
        <Appender name='A1'
                  filePattern='${log.dir}/dspace.log-%d{yyyy-MM-dd}'
                  type='RollingFile'
                  fileName='${log.dir}/dspace.log'

        >
            <!-- NOTE: The %equals patterns are providing a default value of "unknown" if "correlationID" or
                 "requestID" are not currently set in the ThreadContext. -->
            <Layout type='PatternLayout'
                    pattern='%d %-5p %equals{%X{correlationID}}{}{unknown} %equals{%X{requestID}}{}{unknown} %c @ %m%n'/>
            <policies>
                <policy type='TimeBasedTriggeringPolicy'>yyyy-MM-dd</policy>
            </policies>
            <!-- Sample deletion policy:  keep last 30 archived files
            <DefaultRolloverStrategy>
                <Delete basePath='${log.dir}'>
                    <IfFileName glob='dspace.log-*'/>
                    <IfAccumulatedFileCount exceeds='30'/>
                </Delete>
            </DefaultRolloverStrategy>
            -->
        </Appender>

        <!-- STDOUT echoes A1 to the container console, so that "docker logs" is not blind -->
        <Appender name='STDOUT'
                  type='Console'>
            <Layout type='PatternLayout'
                    pattern='%d %-5p %equals{%X{correlationID}}{}{unknown} %equals{%X{requestID}}{}{unknown} %c @ %m%n'/>
            <Filters>
                <Filter type='ThresholdFilter'
                        level='${loglevel.console}'/>
            </Filters>
        </Appender>

        <!-- A2 is for the checksum checker -->
        <Appender name='A2'
                  type='Console'>
            <Layout type='PatternLayout'
                    pattern='%m%n'/>
        </Appender>
    </Appenders>

    <Loggers>

        <!-- Most parts of DSpace -->
        <Logger name='org.dspace'
                level='${loglevel.dspace}'
                additivity='false'>
            <AppenderRef ref='A1'/>
            <AppenderRef ref='STDOUT'/>
        </Logger>

        <!-- The checksum checker -->
        <Logger name='org.dspace.checker'
                level='INFO'
                additivity='false'>
            <AppenderRef ref='A2'/>
        </Logger>

        <!-- Block services logging except on exceptions -->
        <Logger name='org.dspace.kernel'
                level='ERROR'/>
        <Logger name='org.dspace.services'
                level='ERROR'/>
        <Logger name='org.dspace.servicemanager'
                level='WARN'/>
        <Logger name='org.dspace.providers'
                level='ERROR'/>
        <Logger name='org.dspace.utils'
                level='ERROR'/>

        <!-- Block passwords from being exposed in Axis logs. (DEBUG exposes passwords in Basic Auth) -->
        <Logger name='org.apache.axis.handlers.http.HTTPAuthHandler'
                level='INFO'/>
        <!-- Anything not a part of DSpace -->
        <Root level='${loglevel.other}'>
            <AppenderRef ref='A1'/>
            <AppenderRef ref='STDOUT'/>
        </Root>
    </Loggers>
</Configuration>