Re: [logback-user] Custom Appender Configuration using generic Properties

28 Jul 2016

      Shortly after writing to this list, I hit on one solution.

If the Custom Appender is configured as described below :

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<configuration>
    <appender name="theCustomAppender" class="domain.TheCustomAppender">
        <properties>
            propertyName1=propertyValue1
            propertyName2=propertyValue2
        </properties>
    </appender>
</configuration>
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Add a "Properties" getter and setter which uses a String argument.

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public String getProperties()

public setProperties(String propertiesString)

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When I need the Properties object, I simple do the following:

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Properties properties = new Properties();
properties.load(new StringReader(propertiesString));
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Problem solved.

Feel free to reply to this thread, with an alternate solution that makes use of a more Joran-oriented technique.

Thanks,

John Page
________________________________
From: John Page
Sent: 28 July 2016 13:12:38
To: logback-user@qos.ch
Subject: Custom Appender Configuration using generic Properties

Hi,

I have developed a custom appender for logback and would like to configure it with a generic set of Properties that I can pass on to the underlying libraries. Rather than create a Getter and Setter for each property that the underlying library uses, I would like the configuration to read the *names* of the properties out of the logback configuration file.

Instead of this:

<configuration>

    <appender name="theCustomAppender" class="domian.TheCustomAppender">

        <getterSetterProperty>value</getterSetterProperty>

    </appender>

</configuration>

I would like to write something like this:

<configuration>

    <appender name="theCustomAppender" class="domian.TheCustomAppender">

        <properties class="java.util.Properties">

            <property name="thisPropertyName" value="value" />

        </properties>

    </appender>

</configuration>

Does the Joran Configurator have the capability to parse a configuration file, generate a Properties object, and then hand it off to the Appender?
I have looked around and have not been able to identify any guidance for this use case. I have discovered the nested element capability and the "class" attribute, but have not been able to build a mapped structure.

The north-west wind does feel a bit chilly, right now... :-)

Thanks,
John Page