Issue Summary

BSERV-14253 provided the ability to use MESH_HOME/logback.xml to add logging customization in Mesh, similar to Bitbucket. However, this custom file is not read without having to do a few changes to the startup arguments.

Steps to Reproduce

1. Create a logback.xml in MESH_HOME

   <included>
       <logger name="com.atlassian.bitbucket" level="DEBUG" />
   
       <appender name="my.mesh.app" class="ch.qos.logback.core.rolling.RollingFileAppender">
           <encoder>
               <charset>UTF-8</charset>
               <pattern>%date %-5level [%thread] %request %logger{36} %m%n%ex</pattern>
           </encoder>
           <file>${log.dir}/my-custom-atlassian-mesh.log</file>
           <rollingPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">
               <fileNamePattern>${log.dir}/my-custom-atlassian-mesh-%d.%i.log</fileNamePattern>
               <maxFileSize>100KB</maxFileSize>
               <maxHistory>5</maxHistory>
               <totalSizeCap>1MB</totalSizeCap>
           </rollingPolicy>
       </appender>
   
       <root level="WARN">
           <appender-ref ref="my.mesh.app"/>
       </root>
   </included>
   

2. Start the Mesh node

Expected Results

The customization works and there is no warning that the custom logback file wasn't opened.

# Only displayed when <configuration debug="true"> is set in logback-spring.xml
11:52:44,587 |-INFO in ch.qos.logback.core.joran.util.ConfigurationWatchListUtil@448c8166 - Adding [file:/mesh/.home-1/logback.xml] to configuration watch list.
11:52:44,604 |-INFO in ch.qos.logback.core.model.processor.DefineModelHandler - About to instantiate property definer of type [com.atlassian.bitbucket.mesh.logback.HomeDirPropertyDefiner]

Actual Results

The customization did not work. The logs warn that the custom logback file wasn't opened.

# Only displayed when <configuration debug="true"> is set in logback-spring.xml
10:23:57,166 |-INFO in ch.qos.logback.core.joran.util.ConfigurationWatchListUtil@4c5ae43b - Adding [file:/mesh/home.dir_IS_UNDEFINED/logback.xml] to configuration watch list.
10:23:57,166 |-WARN in ch.qos.logback.core.joran.action.IncludeAction - Failed to open [file:/mesh/home.dir_IS_UNDEFINED/logback.xml]
10:23:57,183 |-INFO in ch.qos.logback.core.model.processor.DefineModelHandler - About to instantiate property definer of type [com.atlassian.bitbucket.mesh.logback.HomeDirPropertyDefiner]

Workaround

In bin/_start-mesh.sh, define home.dir to the same path as MESH_HOME

MESH_ARGS="-Dmesh.home=$MESH_HOME -Dhome.dir=$MESH_HOME"