Spring Boot with Logback + springProperty

Question

I have configured my logback-spring.xml as per Spring Boot Documentation. Here is my logback-spring.xml file

<configuration>

    <springProperty name="appName" source="spring.application.name" defaultValue="myLogFile" />

    <property name="log.date" value="%d{yyyy-MM-dd}" />
    <property name="log.path" value="/log" />
    <property name="log.file" value="${appName}" />
    <property name="log.live.path" value="${log.path}/${log.file}.log" />

    <appender name="myLogAppender" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>${log.live.path}</file>
        <append>true</append>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${log.path}/archive/${log.file}.${log.date}.log.gz</fileNamePattern>
            <maxHistory>1</maxHistory>
        </rollingPolicy>
    </appender>

    <logger name="com.log.logback" level="INFO" />
    <logger name="com.log.sample" level="INFO" />

    <root level="ERROR">
        <appender-ref ref="myLogAppender" />
    </root>
</configuration>

application.properties

spring.application.name=mybootapp

And while I start my spring boot application, I see 2 directories created under /log path which are myLogFile and bootstrap. From the logs, I could see bootstrap directory is created before logback could access the spring property. I have no clue why bootstrap directory is created. I didn't see this issue before using <springProperty> in logback xml. Is there any configuration that I am missing here? I couldn't find any relevant info online.

Logback logs for the reference.

15:54:02,085 |-INFO in ch.qos.logback.core.joran.spi.ConfigurationWatchList@610f7aa - URL [jar:file:/C:/projects/jars/logback-logging-17.2.2.INT.jar!/logback-spring.xml] is not of type file
15:54:02,132 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - Will scan for changes in [jar:file:/C:/projects/jars/logback-logging-17.2.2.INT.jar!/logback-spring.xml] 
15:54:02,132 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - Setting ReconfigureOnChangeTask scanning period to 5 minutes
15:54:02,132 |-WARN in Logger[org.springframework.core.env.PropertySourcesPropertyResolver] - No appenders present in context [default] for logger [org.springframework.core.env.PropertySourcesPropertyResolver].
15:54:02,274 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - About to instantiate appender of type [ch.qos.logback.core.rolling.RollingFileAppender]
15:54:02,274 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - Naming appender as [myLogAppender]
15:54:02,305 |-INFO in c.q.l.core.rolling.TimeBasedRollingPolicy@867988177 - Will use gz compression
15:54:02,305 |-INFO in c.q.l.core.rolling.TimeBasedRollingPolicy@867988177 - Will use the pattern /log/archive/bootstrap.%d{yyyy-MM-dd}.log for the active file
15:54:02,305 |-INFO in c.q.l.core.rolling.DefaultTimeBasedFileNamingAndTriggeringPolicy - The date pattern is 'yyyy-MM-dd' from file name pattern '/log/archive/bootstrap.%d{yyyy-MM-dd}.log.gz'.
15:54:02,305 |-INFO in c.q.l.core.rolling.DefaultTimeBasedFileNamingAndTriggeringPolicy - Roll-over at midnight.
15:54:02,305 |-INFO in c.q.l.core.rolling.DefaultTimeBasedFileNamingAndTriggeringPolicy - Setting initial period to Tue Apr 18 15:45:05 EDT 2017
15:54:02,320 |-INFO in ch.qos.logback.core.rolling.RollingFileAppender[myLogAppender] - Active log file name: /log/bootstrap.log
15:54:02,320 |-INFO in ch.qos.logback.core.rolling.RollingFileAppender[myLogAppender] - File property is set to [/log/bootstrap.log]
15:54:02,336 |-INFO in ch.qos.logback.classic.joran.action.LoggerAction - Setting level of logger [com.log.logback] to INFO
15:54:02,336 |-INFO in ch.qos.logback.classic.jul.LevelChangePropagator@48e1f6c7 - Propagating INFO level on Logger[com.log.logback] onto the JUL framework
15:54:02,336 |-INFO in ch.qos.logback.classic.joran.action.LoggerAction - Setting level of logger [com.log.sample] to INFO
15:54:02,336 |-INFO in ch.qos.logback.classic.jul.LevelChangePropagator@48e1f6c7 - Propagating INFO level on Logger[com.log.sample] onto the JUL framework
15:54:02,336 |-INFO in ch.qos.logback.classic.joran.action.RootLoggerAction - Setting level of ROOT logger to ERROR
15:54:02,336 |-INFO in ch.qos.logback.classic.jul.LevelChangePropagator@48e1f6c7 - Propagating ERROR level on Logger[ROOT] onto the JUL framework
15:54:02,336 |-INFO in ch.qos.logback.core.joran.action.AppenderRefAction - Attaching appender named [myLogAppender] to Logger[ROOT]
15:54:02,336 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - End of configuration.
15:54:02,336 |-INFO in org.springframework.boot.logging.logback.SpringBootJoranConfigurator@26abb146 - Registering current configuration as safe fallback point
15:54:03,139 |-INFO in ch.qos.logback.core.joran.spi.ConfigurationWatchList@242aa8d9 - URL [jar:file:/C:/projects/jars/logback-logging-17.2.2.INT.jar!/logback-spring.xml] is not of type file
15:54:03,139 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - Will scan for changes in [jar:file:/C:/projects/jars/logback-logging-17.2.2.INT.jar!/logback-spring.xml] 
15:54:03,139 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - Setting ReconfigureOnChangeTask scanning period to 5 minutes
15:54:03,139 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - About to instantiate appender of type [ch.qos.logback.core.rolling.RollingFileAppender]
15:54:03,139 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - Naming appender as [myLogAppender]
15:54:03,139 |-INFO in c.q.l.core.rolling.TimeBasedRollingPolicy@300604602 - Will use gz compression
15:54:03,139 |-INFO in c.q.l.core.rolling.TimeBasedRollingPolicy@300604602 - Will use the pattern /log/archive/mybootapp.%d{yyyy-MM-dd}.log for the active file
15:54:03,140 |-INFO in c.q.l.core.rolling.DefaultTimeBasedFileNamingAndTriggeringPolicy - The date pattern is 'yyyy-MM-dd' from file name pattern '/log/archive/mybootapp.%d{yyyy-MM-dd}.log.gz'.
15:54:03,140 |-INFO in c.q.l.core.rolling.DefaultTimeBasedFileNamingAndTriggeringPolicy - Roll-over at midnight.
15:54:03,140 |-INFO in c.q.l.core.rolling.DefaultTimeBasedFileNamingAndTriggeringPolicy - Setting initial period to Tue Apr 18 15:53:03 EDT 2017
15:54:03,140 |-INFO in ch.qos.logback.core.rolling.RollingFileAppender[myLogAppender] - Active log file name: /log/mybootapp.log
15:54:03,140 |-INFO in ch.qos.logback.core.rolling.RollingFileAppender[myLogAppender] - File property is set to [/log/mybootapp.log]
15:54:03,140 |-INFO in ch.qos.logback.classic.joran.action.LoggerAction - Setting level of logger [com.log.logback] to INFO
15:54:03,140 |-INFO in ch.qos.logback.classic.jul.LevelChangePropagator@1b065145 - Propagating INFO level on Logger[com.log.logback] onto the JUL framework
15:54:03,140 |-INFO in ch.qos.logback.classic.joran.action.LoggerAction - Setting level of logger [com.log.sample] to INFO
15:54:03,140 |-INFO in ch.qos.logback.classic.jul.LevelChangePropagator@1b065145 - Propagating INFO level on Logger[com.log.sample] onto the JUL framework
15:54:03,140 |-INFO in ch.qos.logback.classic.joran.action.RootLoggerAction - Setting level of ROOT logger to ERROR
15:54:03,140 |-INFO in ch.qos.logback.classic.jul.LevelChangePropagator@1b065145 - Propagating ERROR level on Logger[ROOT] onto the JUL framework
15:54:03,140 |-INFO in ch.qos.logback.core.joran.action.AppenderRefAction - Attaching appender named [myLogAppender] to Logger[ROOT]
15:54:03,140 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - End of configuration.
15:54:03,140 |-INFO in org.springframework.boot.logging.logback.SpringBootJoranConfigurator@45cff11c - Registering current configuration as safe fallback point

Can someone pls help.

Answer 1

It may be because I updated to 1.5.18 just now but this appears to work, my only change from yours is the addition of scope="context". Here's how I did it with the GELF appender

<?xml version="1.0" encoding="UTF-8"?>
<configuration debug="true">
  <include resource="org/springframework/boot/logging/logback/base.xml"/>
  <springProperty scope="context" name="name" source="spring.application.name"/>

  <appender name="gelf" class="de.appelgriepsch.logback.GelfAppender">
    <server>192.168.1.113</server>
    <includeSource>true</includeSource>
    <includeMDC>true</includeMDC>
    <includeLevelName>true</includeLevelName>
    <additionalFields>name=${name}</additionalFields>
  </appender>
  <root>
    <appender-ref ref="gelf"/>
  </root>
</configuration>