[logback-dev] [JIRA] Updates for LOGBACK-1726: Variable contextName equals contextName_IS_UNDEFINED

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logback / LOGBACK-1726 [Open]
Variable contextName equals contextName_IS_UNDEFINED

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https://jira.qos.ch/browse/LOGBACK-1726

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 Issue created
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Dmitriy Vladislavovich Prokin created this issue on 17/Feb/23 4:08 PM
Summary:              Variable contextName equals contextName_IS_UNDEFINED
Issue Type:           Bug
Affects Versions:     1.3.5
Assignee:             Logback dev list
Components:           logback-core
Created:              17/Feb/23 4:08 PM
Environment:
   
  
  Linux, Tomcat 9.0.68
Priority:             Major
Reporter:             Dmitriy Vladislavovich Prokin
Description:
  For our web application (tomcat 9.0.68) using logback-classic, 
logback-core,logback-access  in version 1.2.3, we define the log file name with 
variable "contextName" as described in the documentation, my configuration:
  {code:java}
  <?xml version="1.0" encoding="UTF-8"?>
  
  <configuration scan="true" scanPeriod="30 seconds">
  
      <appender name="SIFT" class="ch.qos.logback.classic.sift.SiftingAppender">
          <discriminator class="com.p.tomcat.PSContextDiscriminator">
              <defaultValue>unknown</defaultValue>
          </discriminator>
          <sift>
              <appender name="FILE-APPENDER" 
class="ch.qos.logback.core.rolling.RollingFileAppender">
                  
<file>${catalina.base}/logs/${contextName}/${contextName}.log</file>
                  <append>true</append>
                  <rollingPolicy 
class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
                      <!-- daily rollover -->
                      
<fileNamePattern>${catalina.base}/logs/${contextName}/${contextName}-%d{yyyy-MM-dd}-%i.log.zip</fileNamePattern>
                      <!-- keep 30 days' worth of history -->
                      <maxHistory>30</maxHistory>
                      <timeBasedFileNamingAndTriggeringPolicy 
class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                          <maxFileSize>100MB</maxFileSize>
                      </timeBasedFileNamingAndTriggeringPolicy>
                  </rollingPolicy>
                  <encoder>
                      <charset>utf-8</charset>
                      <pattern>%d{HH:mm:ss.SSS} [%thread] TX[%X{pstxid}] 
%-5level %logger{5} - %msg%n</pattern>
                  </encoder>
              </appender>
          </sift>
      </appender>
      <root>
          <appender-ref ref="SIFT"/>
      </root>
  
      <appender name="JSONL-LOG" 
class="ch.qos.logback.core.rolling.RollingFileAppender">
          <file>${catalina.base}/logs/tomcat.jsonl</file>
          <rollingPolicy 
class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
              <!-- daily rollover -->
              
<fileNamePattern>${catalina.base}/logs/tomcat-%d{yyyy-MM-dd}-%i.jsonl.zip</fileNamePattern>
              <!-- keep 3 days' worth of history -->
              <maxHistory>3</maxHistory>
              <timeBasedFileNamingAndTriggeringPolicy 
class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                  <maxFileSize>100MB</maxFileSize>
              </timeBasedFileNamingAndTriggeringPolicy>
          </rollingPolicy>
          <encoder class="net.logstash.logback.encoder.LogstashEncoder"/>
      </appender>
      <root>
          <appender-ref ref="JSONL-LOG"/>
      </root>
      <root level="INFO">
      </root>
  
      <!-- Logger for a correct use of SLF4JBridgeHandler -->
      <!-- PLEASE, DON'T CHANGE ITS LEVEL TO DEBUG AND TRACE -->
      <logger name="org.apache.naming.SelectorContext" level="INFO"/>
      <!-- Logging level listener for JUL 
(http://logback.qos.ch/manual/configuration.html#LevelChangePropagator) -->
      <contextListener 
class="ch.qos.logback.classic.jul.LevelChangePropagator"/>
  
  </configuration>
  {code}
  For version 1.2.3, This works nicely and as expected.
  
  However, after upgrading version 1.3.5, the variable ${contextName} is not 
defined, but in opinion, contextName must have default value "default". 
  
  Now created directory and file with name "unknown", because not found value 
for contextName and use my defaultValue. If I deleted my defaultValue from 
configuration, log file has name "contextName_IS_UNDEFINED"
  
  I tried to set the value of the contextName to use the construction "property"
  {code:java}
  <property name="contextName" value="myContextName" /> {code}
  But the value has not changed.
  
  Why does the variable contextName not exist?


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