This just feels overly complicated. I have a feeling you are going to get
pushback from all the folks who have learned over the years that XML is a good
configuration language but sucks as a programming language. Wouldn't it make
more sense to just use a real scripting language if you want this?
I find it odd that you find this more important than adding support for
Messages.
Ralph
On Mar 29, 2010, at 2:07 PM, Ceki Gülcü wrote:
>
> Just committed new code so that the following configuration file is
> interpreted correctly.
>
> <configuration>
>
> <appender name="FILE" class="ch.qos.logback.core.FileAppender">
> <file>${randomOutputDir}/conditional.log</file>
> <encoder>
> <pattern>%d %-5level %logger{35} - %msg %n</pattern>
> </encoder>
> </appender>
>
> <root level="ERROR">
> <appender-ref ref="FILE" />
> </root>
>
>
> <if condition='property("HOSTNAME").contains("${aHost}")'>
> <then>
> <appender name="CON" class="ch.qos.logback.core.ConsoleAppender">
> <encoder>
> <pattern>%d %-5level %logger{35} - %msg %n</pattern>
> </encoder>
> </appender>
> <root>
> <appender-ref ref="CON" />
> </root>
> </then>
> </if>
>
> </configuration>
>
> where "aHost" is set to be the name of the current host. Note that
> HOSTNAME always contains the name of the current host so that the
> condition property("HOSTNAME").contains("${aHost}") evaluates to true.
>
> In my previous message, the config file get set the incremental
> attribute of the root element to true. No such attribute
> exists. Logger declaration in logback configuration files are
> incremental by design. I mistakenly thought that it was like in log4j
> where each logger declaration removes all attached appenders.
>
> I hope that you'll find the XML-conditional syntax not too
> horrible. Your comments are welcome,
>
> --
> Ceki
>
>
> On 29/03/2010 9:50 PM, Ceki Gülcü wrote:
>>
>> Hello all,
>>
>> I began implementing if-then-else support in Joran. If you wish to
>> enable part of a config file in one environment and disable it
>> another, now you can.
>>
>> Here is an example,
>>
>> <configuration>
>>
>> <appender name="FILE" class="ch.qos.logback.core.FileAppender">
>> <encoder>
>> <pattern>%d %-5level %logger{35} - %msg %n</pattern>
>> </encoder>
>> </appender>
>>
>> <root level="DEBUG">
>> <appender-ref ref="FILE" />
>> </root>
>>
>>
>> <if condition='property("HOSTNAME").contains("mydevHost")'>
>> <then>
>> <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
>> <encoder>
>> <pattern>%d %-5level %logger{35} - %msg %n</pattern>
>> </encoder>
>> </appender>
>> <root incremental="true">
>> <appender-ref ref="STDOUT" />
>> </root>
>> </then>
>> </if>
>>
>> </configuration>
>>
>> Thus, the ConsoleAppender will be attached to the root logger only on
>> "mydevHost" but not on other hosts.
>>
>> This feature is still experimental. Your feedback is welcome.
>>
>> --
>> Ceki
>>
>> _______________________________________________
>> logback-dev mailing list
>> logback-dev@qos.ch
>> http://qos.ch/mailman/listinfo/logback-dev
>
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