SL4J adapter for Liferay's logging service

[12年前 に Björn Ryding によって更新されました。]

In our projects we use SL4J for logging.

from sl4j.org:
"The Simple Logging Facade for Java or (SLF4J) serves as a simple facade or abstraction for various logging frameworks, e.g. java.util.logging, log4j and logback, allowing the end user to plug in the desired logging framework at deployment time."

A couple of months ago a team mate created a SL4J adapter for Liferay's logging service. We replaced the sl4j adapter for log4j that Liferay ships with (sl4j-log4j12.jar) with the new adapter and now copy the adapter to our plugins at deploy time by defining the adapter as a dependency in portal.dependency.jars in liferay-plugin-package.properties.

We can now control log levels in the control panel and so on for the plugins that use SL4J.

The code is available at https://github.com/bjorn-ryding/slf4j-liferay-adapter

Could it be interesting to ship Liferay with this adapter? VGR who financed the development is willing to donate the code.

Cheers,
Björn

[11年前 に Sampsa Sohlman によって更新されました。]

Hi Björn

This is great stuff. I was thinking to do same couple of years ago, but did not anything about it. Slf4j it is easy to bind most of the application servers at market, so please I make issue to LR jira and I will vote for it.

- Sampsa

[11年前 に Björn Ryding によって更新されました。]

Thanks Sampsa!

Liferay actually implemented a similar solution shortly after my post. Their implementation is in util-java and makes it trivial to use the Liferay logging system through SLF4J in Liferay 6.1. However, if you would like to use another SLF4J binding than the Liferay one it's a bit annoying that their implementation ended up in util-java.

Cheers,
Björn

[10年前 に Denis Signoretto によって更新されました。]

Hi,

recently Liferay has released util-slf4j (still as beta version) an slf4j binder for Liferay logging system.
Moreover it can be managed as Maven dependecy whit the following GAV:

<name>Liferay Util SLF4J</name>
<groupId>com.liferay.portal</groupId>
<artifactId>util-slf4j</artifactId>
<version>6.2.0-B1</version>

Regards,
Denis.

[10年前 に Ryan Kennedy によって更新されました。]

Is this dependency intended for the pom in a portlet? If so, it doesn't seem to work in 6.1.20-ee-ga2. If not, can someone please explain how to configure slf4j?

[10年前 に Mika Koivisto によって更新されました。]

You need to use EE artifacts when using EE portal. Those are not available publicly, you will need to download them from customer portal and install them to a local repository.