[Scala 2.5] Custom logback layout

[Hubert Świetlicki]

Hello!


How can I use custom layout class for Logback? I created a new layout class:

package core.models.logger

import ch.qos.logback.classic.html.HTMLLayout

class AccessLoggingLayout extends HTMLLayout {}

and defined an appender in logback,xml:

<appender name="ACCESSFILE" class="ch.qos.logback.core.FileAppender">
  <file>${application.home:-.}/logs/access.html</file>
  <encoder class="ch.qos.logback.core.encoder.LayoutWrappingEncoder">
    <layout class="core.models.logger.AccessLoggingLayout">
      <pattern>%date{ISO8601}%level%message</pattern>
    </layout>
  </encoder>
</appender>

When I try to run my application, the AccessLoggingLayout class is not found by the class loader. Can you help me with this issue?

Hubert

[Will Sargent]

You need to declare AccessLoggingLayout in the classpath, well before the rest of the application gets loaded.  I think you may want to define it in a different project and then have as libraryDependencies inside build.sbt.

See the LoggerConfigurator and PlayLogback module in Play for more details.

Will.

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[Hubert Świetlicki]

I did what you proposed, Will. New project (https://github.com/huberts/play-logback-layout), and additional dependency in my build.sbt file:

libraryDepenedencies += "com.github.huberts" % "play-logback-layout" % "1.1" from "https://github.com/huberts/play-logback-layout/releases/download/1.1/play-logback-layout_2.11-1.1.jar"

It is a working solution, thanks for your help! Although, I still think it should be possible to define my custom layout inside my application code.

BTW: As you can see, I used the GitHub Releasing Tool for resolving my dependency. Can anyone help me with making a SBT resolver for this? This fixed syntax is a little bit rigid for me.

[Will Sargent]

If you use "sbt publishLocal" then it should push only to your local .ivy2 directory.

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