LOG_FILE_IS_UNDEFINED log file is being created in boot 1.4.5

[ezraroi]

when using vanila Spring boot 1.4.5 with the following logback configuration:

<configuration>
  <appender name="FILE" class="ch.qos.logback.core.FileAppender">
    <file>${LOG_FILE}</file>
    <encoder>
      <pattern>%logger{35} - %msg%n</pattern>
    </encoder>
  </appender>

  <appender name="ASYNC" class="ch.qos.logback.classic.AsyncAppender">
    <appender-ref ref="FILE" />
  </appender>

  <root level="INFO">
    <appender-ref ref="ASYNC" />
  </root>
</configuration>

and the following application.properties:

logging.file=/tmp/myapp.log

Empty file is being created in the name of LOG_FILE_IS_UNDEFINED. Looks like 2 async appenders are being created, one with LOG_FILE_IS_UNDEFINED as the file name and another one with the file name from the properties. The LOG_FILE_IS_UNDEFINED is stopped immediately and this is why the file is empty.

@regevbr

[philwebb]

Have you tried using a logback-spring.xml file rather than logback.xml? I have a feeling that logback might be initializing itself before we can set the LOG_FILE property.

If that doesn't work, could you please share a small sample application that shows the problem?

[regevbr]

We are using the logback-spring.xml file already and the issue still persists

[philwebb]

@regevbr You have the same issue?

If that doesn't work, could you please share a small sample application that shows the problem?

Are you able to provide a sample?

[regevbr]

Hi,
Roi and I are working in the same team.
We will provide a sample application as soon as we can.

[ezraroi]

Hi,
after changing the file to logback-spring.xml it is working fine! thanks