As of logback version 1.3, nested appenders are not allowed.

[albertus82]

Hi,

I'm migrating from 1.2 to 1.4 and I have a SiftingAppender configured like the example shown in the manual (appender > sift > appender):

https://logback.qos.ch/manual/appenders.html#SiftingAppender

Nevertheless I'm getting the warning "As of logback version 1.3, nested appenders are not allowed", which causes Logback to print its full initalization log. Am I missing something?

Thank you.

[ceki]

Sounds like a bug. Can you please create a jira issue for this?

[albertus82]

Created https://jira.qos.ch/browse/LOGBACK-1698. Anyhow here it is the XML definition of the appender(s):

<appender name="MY_LOG_APPENDER" class="ch.qos.logback.classic.sift.SiftingAppender">
    <!-- Useless but mandatory for SiftingAppender -->
    <discriminator>
        <key>dummy</key>
        <defaultValue>dummy</defaultValue>
    </discriminator>
    <!-- Avoid creation of unnecessary empty files -->
    <sift>
        <appender name="MY_LOG_APPENDER_SIFT" class="ch.qos.logback.core.rolling.RollingFileAppender">
            <rollingPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">
                <fileNamePattern>${logs.directory}/mylog.%d.%i.log</fileNamePattern>
                <maxFileSize>25MB</maxFileSize>
                <maxHistory>30</maxHistory>
                <totalSizeCap>250MB</totalSizeCap>
                <cleanHistoryOnStart>true</cleanHistoryOnStart>
            </rollingPolicy>
            <encoder>
                <pattern>%d{MMM dd HH:mm:ss} %hostaddr %msg%n</pattern>
            </encoder>
        </appender>
    </sift>
</appender>

Thanks.