CODEWITHSUNDEEP
javalog4jlogging
TheGuyNextDoor
TheGuyNextDoor

Reputation: 7937

log4j: abbreviate/shorten package names

How would i abbreviate/shorten package names in log generated using log4j. i.e. instead of com.longpackage.anotherpackage.lastpackage.MyClass i want c.l.a.l.MyClass. I have seen this in Artifactory logs, but can't figure how to achieve this using log4j.

Upvotes: 70

Views: 30169

Answers (2)

Tomasz Nurkiewicz
Tomasz Nurkiewicz

Reputation: 340743

Artifactory uses Logback:

Projects known to rely on logback:

  • [...]

  • Artifactory

which has this nice feature called Conversion Word:

Conversion specifier Logger name Result
%logger mainPackage.sub.sample.Bar mainPackage.sub.sample.Bar
%logger{0} mainPackage.sub.sample.Bar Bar
%logger{5} mainPackage.sub.sample.Bar m.s.s.Bar
%logger{10} mainPackage.sub.sample.Bar m.s.s.Bar
%logger{15} mainPackage.sub.sample.Bar m.s.sample.Bar
%logger{16} mainPackage.sub.sample.Bar m.sub.sample.Bar
%logger{26} mainPackage.sub.sample.Bar mainPackage.sub.sample.Bar

Upvotes: 63

TheGuyNextDoor
TheGuyNextDoor

Reputation: 7937

It turns out that this is possible using log4j after all(tested using v1.2.16), thanks to Tomasz Nurkiewicz for pointing me to LogBack. The feature, ConversionWord, is available using the EnhancedPatternLayout layout.

From the javadoc

... For example, for the category name "alpha.beta.gamma" the pattern %c{2} will output the last two elements ("beta.gamma"), %c{-2} will remove two elements leaving "gamma", %c{1.} will output "a.b.gamma" ...

I'm using JBoss and had to upgrade log4j and use the above layout.

Upvotes: 67

Related Questions