Log4j configuration in a Groovy Script

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Hi,

I don't have a question, just some observations on using log4j in a script
that i found interesting.

In a Groovy 4.0.28 groovy script, i noticed that if i use log4j i need to
do one of the two options below to set the logging level:

1. Set the log level on the root logger
@Grab(group='org.apache.logging.log4j', module='log4j-api',
version='2.20.0'),
@Grab(group='org.apache.logging.log4j', module='log4j-core',
version='2.20.0'),
@Grab(group='org.apache.logging.log4j', module='log4j-slf4j-impl',
version='2.20.0')

import org.apache.logging.log4j.Logger
import org.apache.logging.log4j.LogManager
import org.apache.logging.log4j.Level
import org.apache.logging.log4j.core.config.Configurator

Configurator.setRootLevel(Level.INFO)

@Field
final Logger log = LogManager.getLogger()

In this case only LogManager.getLogger() works,
LogManager.getLogger(this.class) does not work.

The downside is that the groovy script is not seen as the "owner" of the
log messages so output will be:
09:21:05.600 [main] INFO  org.codehaus.groovy.vmplugin.v8.IndyInterface -
Found 2 CSV files to process.

I.e. IndyInterface instead of my script class.

To make log output better you need to do (the script name is
createExcel.groovy)

@Field
final Logger log = LogManager.getLogger(this.class.name)
Configurator.setLevel(log.getName(), Level.INFO)
Configurator.setRootLevel(Level.INFO)
LogManager.getContext(false).updateLoggers()

09:24:29.625 [main] INFO  createExcel - Found 2 CSV files to process.

LogManager.getLogger(this.class) does NOT work (results in no output)
which is curious.

Best regards,

Per

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<div dir=3D"ltr">Hi,<div><br></div><div>I don&#39;t have a question, just s=
ome observations on using log4j in a script that i found interesting.</div>=
<div><br></div><div>In a Groovy 4.0.28 groovy script, i noticed that if i u=
se log4j i need to do one of the two options below to set the logging level=
:</div><div><br></div><div>1. Set the log level on the root logger</div><fo=
nt face=3D"monospace">@Grab(group=3D&#39;org.apache.logging.log4j&#39;, mod=
ule=3D&#39;log4j-api&#39;, version=3D&#39;2.20.0&#39;),<br>@Grab(group=3D&#=
39;org.apache.logging.log4j&#39;, module=3D&#39;log4j-core&#39;, version=3D=
&#39;2.20.0&#39;),<br>@Grab(group=3D&#39;org.apache.logging.log4j&#39;, mod=
ule=3D&#39;log4j-slf4j-impl&#39;, version=3D&#39;2.20.0&#39;)<br><br>import=
 org.apache.logging.log4j.Logger<br>import org.apache.logging.log4j.LogMana=
ger<br>import org.apache.logging.log4j.Level<br>import org.apache.logging.l=
og4j.core.config.Configurator<br><br>Configurator.setRootLevel(Level.INFO)<=
br><br>@Field<br>final Logger log =3D LogManager.getLogger()</font><div><br=
><div>In this case=C2=A0only LogManager.getLogger() works, LogManager.getLo=
gger(this.class) does not work. </div><div><br></div><div>The downside is t=
hat the groovy script is not seen as the &quot;owner&quot; of the log messa=
ges so output will be:</div><div><font face=3D"monospace">09:21:05.600 [mai=
n] INFO =C2=A0org.codehaus.groovy.vmplugin.v8.IndyInterface - Found 2 CSV f=
iles to process.</font></div><div><font face=3D"monospace"><br></font></div=
><div><font face=3D"arial, sans-serif">I.e. IndyInterface instead of my scr=
ipt class.</font></div><div><br></div><div>To make log output better you ne=
ed to do (the script name is createExcel.groovy)</div><div><div style=3D"">=
<pre style=3D"">@Field<br>final Logger log =3D LogManager.getLogger(<a href=
=3D"http://this.class.name">this.class.name</a>)<br>Configurator.setLevel(l=
og.getName(), Level.INFO)<br>Configurator.setRootLevel(Level.INFO)
LogManager.getContext(false).updateLoggers()</pre><pre style=3D""><span sty=
le=3D"color:rgb(34,34,34);background-color:rgb(255,255,255)">09:24:29.625 [=
main] INFO =C2=A0createExcel - Found 2 CSV files to process.</span></pre></=
div></div><div><pre>LogManager.getLogger(this.class) does NOT work (results=
 in no output) which is curious.</pre><pre>Best regards,</pre><pre>Per</pre=
></div></div></div>

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