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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)
//
== Standard Logging Configuration
The standard logging configuration defines a context __APEX__, which is used in the standard output pattern.
The location for log files is defined in the property `VAR_LOG` and set to `/var/log/apex`.
The standard status listener is set to __NOP__ and the overall logback configuration is set to no debug.
[source%nowrap,xml,numbered]
----
<configuration debug="false">
<statusListener class="ch.qos.logback.core.status.NopStatusListener" />
<contextName>Apex</contextName>
<property name="VAR_LOG" value="/var/log/ericsson/apex/" />
...appenders
...loggers
</configuration>
----
The first appender defined is called `STDOUT` for logs to standard out.
[source%nowrap,xml,numbered]
----
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<Pattern>%d %contextName [%t] %level %logger{36} - %msg%n</Pattern>
</encoder>
</appender>
----
The root level logger then is set to the level __info__ using the standard out appender.
[source%nowrap,xml,numbered]
----
<root level="info">
<appender-ref ref="STDOUT" />
</root>
----
The first appender is called `FILE`.
It writes logs to a file `apex.log`.
[source%nowrap,xml,numbered]
----
<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>
----
The first appender is called `CTXT_FILE`.
It writes logs to a file `apex_ctxt.log`.
[source%nowrap,xml,numbered]
----
<appender name="CTXT_FILE" class="ch.qos.logback.core.FileAppender">
<file>${VAR_LOG}/apex_ctxt.log</file>
<encoder>
<pattern>
%d %-5relative [procId=${processId}] [%thread] %-5level%logger{26} - %msg %n %ex{full}
</pattern>
</encoder>
</appender>
----
The last definitions are for specific loggers.
The first logger captures all standard APEX classes, appends logs to `STDOUT` with the log level __info__.
The second logger capture all standard APEX classes, appends logs to `FILE` with log level __info__.
The third logger captures context monitoring classes, appends logs to `CTXT_FILE` with log level __trace__.
[source%nowrap,xml,numbered]
----
<logger name="org.onap.policy.apex" level="info" additivity="false">
<appender-ref ref="STDOUT" />
<appender-ref ref="FILE" />
</logger>
<logger name="org.onap.policy.apex.core.context.monitoring" level="TRACE" additivity="false">
<appender-ref ref="CTXT_FILE" />
</logger>
----
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