Web Development with Clojure 3rd - Shadow.cljs REPL receiving DEBUG logs (page 123)

mnardell · 22 February 2022 06:07

I managed to find some online discussions related to this topic, connect the dots, and I found out where the logging levels are set in a Luminous project. One will find logback.xml configurations for dev, test, prod in the env/*/resources directories. Simply adding this xml element:
<logger name="io.undertow.websockets" level="warn" />
silences the undertow DEBUG messages and makes the Shadow.cljs REPL operable. For an example of the logback.xml , have a look at:

github.com

luminus-framework/examples/blob/master/guestbook/env/dev/resources/logback.xml

<?xml version="1.0" encoding="UTF-8"?>
<configuration scan="true" scanPeriod="10 seconds">
    <statusListener class="ch.qos.logback.core.status.NopStatusListener" />
    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
        <!-- encoders are assigned the type
             ch.qos.logback.classic.encoder.PatternLayoutEncoder by default -->
        <encoder>
            <charset>UTF-8</charset>
            <pattern>%date{ISO8601} [%thread] %-5level %logger{36} - %msg %n</pattern>
        </encoder>
    </appender>
    <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>log/guestbook.log</file>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>log/guestbook.%d{yyyy-MM-dd}.%i.log</fileNamePattern>
            <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <maxFileSize>100MB</maxFileSize>
            </timeBasedFileNamingAndTriggeringPolicy>
            <!-- keep 30 days of history -->
            <maxHistory>30</maxHistory>

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Of course this all seems obvious to me now, but I felt rather at loss when I made this post. I suppose that is the nature of learning.

Thanks!