Logging into the file in Mule ESB - esb

Question

Can logging be done into the file in MULE ESB?.If so,please give me some examples and code snippets.Thanks in advance
Narayanan

Answer 1

You need to put log4j properties in your mule project inside main/resources directory. Here's sample log4j.xml that I am using with mule esb.
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">
<appender name="console" class="org.apache.log4j.ConsoleAppender">
<param name="Target" value="System.out" />
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%d{dd-MM-yyyy HH:mm:ss} %-5p [%t] [%c] - %m%n" />
</layout>
<filter class="org.apache.log4j.varia.LevelRangeFilter">
<param name="LevelMin" value="ERROR" />
<param name="LevelMax" value="FATAL" />
<param name="AcceptOnMatch" value="true" />
</filter>
</appender>
<appender name="file" class="org.apache.log4j.DailyRollingFileAppender">
<param name="file" value="${mule.home}/logs/test.log" />
<param name="DatePattern" value="'.'yyyy-MM-dd'.log'" />
<param name="Append" value="true" />
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%d{dd-MM-yyyy HH:mm:ss} %-5p [%t] [%c] - %m%n" />
</layout>
<filter class="org.apache.log4j.varia.LevelRangeFilter">
<param name="LevelMin" value="INFO" />
<param name="LevelMax" value="FATAL" />
<param name="AcceptOnMatch" value="true" />
</filter>
</appender>
<root>
<priority value="DEBUG" />
<appender-ref ref="console" />
<appender-ref ref="file" />
</root>
</log4j:configuration>

Answer 2

Use the below log4j.xml file. Name the files as log4j.xml place it in the mule project classpath so that mule will pick this file when starting the app.
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration xmlns:log4j='http://jakarta.apache.org/log4j/'>
<appender name="STDOUT" class="org.apache.log4j.ConsoleAppender">
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%d %-5p [%t] %C{2} (%F:%L) - %m%n" />
</layout>
</appender>
<appender name="FILE" class="org.apache.log4j.DailyRollingFileAppender">
<param name="File" value="c:/logs/gid/gid.log" />
<param name="DatePattern" value="'.'yyyy-MM-dd" />
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%d %-5p [%t] %C{2} (%F:%L) - %m%n" />
</layout>
</appender>
<root>
<level value="INFO" />
<appender-ref ref="FILE" />
</root>
</log4j:configuration>
Hope this helps you.
Thanks...

Answer 3

Yes we can save the entire logs in a file in any location. For that change the target(give the path where you want) in te log4j.xml file.

Answer 4

Since Mule 3.6 they changed the Log System from Log4j to Log4j2. Use the following content for your log4j2.xml file. Has been tested with Mule 3.8.
<?xml version="1.0" encoding="UTF-8"?>
<Configuration>
<Appenders>
<Console name="Console" target="SYSTEM_OUT">
<PatternLayout pattern="%-5p %d [%t] %c: %m%n"/>
</Console>
</Appenders>
<Loggers>
<!-- CXF is used heavily by Mule for web services -->
<AsyncLogger name="org.apache.cxf" level="WARN"/>
<!-- Apache Commons tend to make a lot of noise which can clutter the log-->
<AsyncLogger name="org.apache" level="WARN"/>
<!-- Reduce startup noise -->
<AsyncLogger name="org.springframework.beans.factory" level="WARN"/>
<!-- Mule classes -->
<AsyncLogger name="org.mule" level="INFO"/>
<AsyncLogger name="com.mulesoft" level="INFO"/>
<AsyncRoot level="INFO">
<AppenderRef ref="Console"/>
</AsyncRoot>
</Loggers>
</Configuration>