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+//
+// ============LICENSE_START=======================================================
+// Copyright (C) 2016-2018 Ericsson. All rights reserved.
+// ================================================================================
+// This file is licensed under the CREATIVE COMMONS ATTRIBUTION 4.0 INTERNATIONAL LICENSE
+// Full license text at https://creativecommons.org/licenses/by/4.0/legalcode
+//
+// SPDX-License-Identifier: CC-BY-4.0
+// ============LICENSE_END=========================================================
+//
+// @author Sven van der Meer (sven.van.der.meer@ericsson.com)
+//
+
+== Example Configuration for Logging Logic
+
+The following example shows a configuration that logs policy logic to standard out (__info__) and a file (__debug__)
+All other APEX components are logging to a file (__debug__) and standard out (__error__).
+This configuration an be used in a pre-production phase with the APEX engine still running in a separate terminal to monitor policy execution.
+This logback configuration is in the APEX installation as `etc/logback-logic.xml`
+
+[source%nowrap,xml]
+----
+<configuration debug="false">
+ <statusListener class="ch.qos.logback.core.status.NopStatusListener" />
+
+ <contextName>Apex</contextName>
+ <property name="VAR_LOG" value="/var/log/ericsson/apex/" />
+
+ <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+ <encoder>
+ <Pattern>%d %contextName [%t] %level %logger{36} - %msg%n</Pattern>
+ </encoder>
+ </appender>
+
+ <appender name="FILE" class="ch.qos.logback.core.FileAppender">
+ <file>${VAR_LOG}/apex.log</file>
+ <encoder>
+ <pattern>
+ %d %-5relative [procId=${processId}] [%thread] %-5level%logger{26} - %msg %n %ex{full}
+ </pattern>
+ </encoder>
+ </appender>
+
+ <appender name="POLICY_APPENDER_STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+ <encoder>
+ <pattern>policy: %msg\n</pattern>
+ </encoder>
+ </appender>
+
+ <root level="error">
+ <appender-ref ref="STDOUT" />
+ </root>
+
+<logger name="org.onap.policy.apex" level="debug" additivity="false">
+ <appender-ref ref="FILE" />
+</logger>
+
+ <logger name="org.onap.policy.apex.executionlogging" level="debug" additivity="false">
+ <appender-ref ref="POLICY_APPENDER_STDOUT" />
+ <appender-ref ref="FILE" />
+ </logger>
+</configuration>
+----
+