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Date: Wed, 27 Jan 2016 10:55:07 +0530
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Subject: Using log4j SimpleSocketServer with log4j2
From: Nipuni Piyabasi Perera <nipuni880917@gmail.com>
To: log4j-user@logging.apache.org
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Hi all,

I am trying to save logs sent to a server(log4j SimpleSocketserver) via
SocketAppender. I have tried this with log4j and log4j2 as follows.

*Working scenario: *
Log4j.properties configuration:

# MY_LOGFILE is set to be a DailyRollingFileAppender using a PatternLayout.

log4j.appender.MY_LOGFILE=org.apache.log4j.net.SocketAppender

log4j.appender.MY_LOGFILE.Port=4712

log4j.appender.MY_LOGFILE.RemoteHost=localhost

log4j.appender.MY_LOGFILE.ReconnectionDelay=10000


*Error scenario:*

Log4j2.xml configuration:

<Configuration>

    <Appenders>

       ....

        <Socket name="socket" host="localhost" port="4712">

      <PatternLayout pattern="[%d] %5p {%c} - %m%ex%n" charset="UTF-8"/>

    </Socket>

    </Appenders>

    <Loggers>

        <Root level="info">

            <AppenderRef ref="..."/>

            <AppenderRef ref="..."/>

        </Root>

        <Logger name="org.my.custom.package" level="debug"
additivity="false">

                <AppenderRef ref="socket"/>

    </Logger>

    </Loggers>

</Configuration>


I am starting the log4j SimpleSocketserver with port 4712 (java -classpath
 apache-log4j.jar  org.apache.log4j.net.SimpleSocketServer 4712
configfile/test.properties) with properties below:

log4j.rootLogger=DEBUG, file


#Define how the socket server should store the log events

log4j.appender.file=org.apache.log4j.RollingFileAppender

log4j.appender.file.File=application-error.log

log4j.appender.file.MaxFileSize=1MB

log4j.appender.file.MaxBackupIndex=1

log4j.appender.file.layout=org.apache.log4j.PatternLayout

log4j.appender.file.layout.ConversionPattern=[%d] [%t] [%m]%n


I could see logs from my custom package with the first (I.e., log4j older)
configuratuon and I am receiving an error[1] from at SimpleSocketServer
side with the log4j2 configuration.  I assume that the SimpleSocketServer
may not compatible with log4j2. If that is the issue is there a log4j
server compatible with log4j2 SocketAppender?. Or am I missing something
here with the log4j2 configuration?

[1]   [2016-01-27 09:49:57,299] [main] [Connected to client at /127.0.0.1]
       [2016-01-27 09:49:57,299] [main] [Starting new socket node.]
       [2016-01-27 09:49:57,300] [main] [Waiting to accept a new client.]
       [2016-01-27 09:49:57,479] [Thread-1] [Unexpected exception. Closing
conneciton.]
       java.lang.ClassNotFoundException:
org.apache.logging.log4j.core.impl.Log4jLogEvent$LogEventProxy
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:348)
at java.io.ObjectInputStream.resolveClass(ObjectInputStream.java:626)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1613)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1518)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1774)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:371)
at org.apache.log4j.net.SocketNode.run(SocketNode.java:67)
at java.lang.Thread.run(Thread.java:745)

Thanks,
Nipuni

-- 
Nipuni Perera
Software Engineer; WSO2 Inc.; http://wso2.com
Email: nipuni@wso2.com
Git hub profile: https://github.com/nipuni
Blog : http://nipunipererablog.blogspot.com/
Mobile: +94 (71) 5626680

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