karaf/gshell/gshell-log/src/main/resources/META-INF/spring/gshell-log.xml

<?xml version="1.0" encoding="UTF-8"?>
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    Licensed to the Apache Software Foundation (ASF) under one or more
    contributor license agreements.  See the NOTICE file distributed with
    this work for additional information regarding copyright ownership.
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    (the "License"); you may not use this file except in compliance with
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       http://www.apache.org/licenses/LICENSE-2.0

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<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:ctx="http://www.springframework.org/schema/context"
       xmlns:osgi="http://www.springframework.org/schema/osgi"
       xmlns:osgix="http://www.springframework.org/schema/osgi-compendium"
       xmlns:util="http://www.springframework.org/schema/util"
       xmlns:gshell="http://servicemix.apache.org/schema/servicemix-gshell"
       xsi:schemaLocation="
  http://www.springframework.org/schema/beans
  http://www.springframework.org/schema/beans/spring-beans.xsd
  http://www.springframework.org/schema/context
  http://www.springframework.org/schema/context/spring-context.xsd
  http://www.springframework.org/schema/osgi
  http://www.springframework.org/schema/osgi/spring-osgi.xsd
  http://www.springframework.org/schema/osgi-compendium
  http://www.springframework.org/schema/osgi-compendium/spring-osgi-compendium.xsd
  http://www.springframework.org/schema/util
  http://www.springframework.org/schema/util/spring-util.xsd
  http://servicemix.apache.org/schema/servicemix-gshell
  http://servicemix.apache.org/schema/servicemix-gshell/servicemix-gshell.xsd">

    <gshell:command-bundle>
        <gshell:command name="log/display">
            <gshell:action class="org.apache.felix.karaf.gshell.log.DisplayLog">
                <property name="bundleContext" ref="bundleContext"/>
                <property name="events" ref="events" />
                <property name="pattern" value="${pattern}" />
            </gshell:action>
        </gshell:command>
        <gshell:link name="log/d" target="log/display" />
        <gshell:command name="log/display-exception">
            <gshell:action class="org.apache.felix.karaf.gshell.log.DisplayException">
                <property name="bundleContext" ref="bundleContext"/>
                <property name="events" ref="events" />
            </gshell:action>
        </gshell:command>
        <gshell:link name="log/de" target="log/display-exception" />
        <gshell:command name="log/get">
            <gshell:action class="org.apache.felix.karaf.gshell.log.GetLogLevel">
                <property name="bundleContext" ref="bundleContext"/>
            </gshell:action>
        </gshell:command>
        <gshell:command name="log/set">
            <gshell:action class="org.apache.felix.karaf.gshell.log.SetLogLevel">
                <property name="bundleContext" ref="bundleContext"/>
            </gshell:action>
        </gshell:command>

        <gshell:alias name="ld" alias="log/d" />
        <gshell:alias name="lde" alias="log/de" />
    </gshell:command-bundle>

    <bean id="vmLogAppender" class="org.apache.felix.karaf.gshell.log.VmLogAppender">
        <property name="events" ref="events" />
    </bean>

    <bean id="events" class="org.apache.felix.karaf.gshell.log.LruList">
        <constructor-arg value="${size}" />
    </bean>

    <osgi:service ref="vmLogAppender" interface="org.ops4j.pax.logging.spi.PaxAppender">
        <osgi:service-properties>
            <entry>
                <key><util:constant static-field="org.ops4j.pax.logging.PaxLoggingService.APPENDER_NAME_PROPERTY"/></key>
                <value>VmLogAppender</value>
            </entry>
        </osgi:service-properties>
    </osgi:service>

    <osgix:cm-properties id="cmProps" persistent-id="org.apache.felix.karaf.log">
        <prop key="size">500</prop>
        <prop key="pattern">%d{ABSOLUTE} | %-5.5p | %-16.16t | %-32.32c{1} | %-32.32C %4L | %m%n</prop>
    </osgix:cm-properties>

    <ctx:property-placeholder properties-ref="cmProps" />

</beans>