[logback-dev] [JIRA] Created: (LBCLASSIC-310) ReconfigureOnChangeFilter should re-use substition properties from initial configuration

[Gunnar Wagenknecht (JIRA)]

ReconfigureOnChangeFilter should re-use substition properties from initial configuration
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                 Key: LBCLASSIC-310
                 URL: http://jira.qos.ch/browse/LBCLASSIC-310
             Project: logback-classic
          Issue Type: Improvement
          Components: joran
    Affects Versions: 0.9.27
            Reporter: Gunnar Wagenknecht
            Assignee: Logback dev list


Logback configuration files are automatically reloaded when {{scan="true"}} is set. This is implemented using {{ReconfigureOnChangeFilter}}. The actually re-configuration happens in {{ReconfiguringThread}} which always creates a new default {{JoranConfigurator}}.

This is works as long as the initial {{JoranConfigurator}} hasn't been extended to support additional substitution properties.

{code:java}
// create our customized configurator
final JoranConfigurator configurator = new JoranConfigurator() {
   @Override
   protected void addImplicitRules(final Interpreter interpreter) {
      super.addImplicitRules(interpreter);
      // set some properties for log file substitution
      if (null != instanceLogfileDirectory) {
         interpreter.getInterpretationContext().addSubstitutionProperty("my.property", calculateMyPropertyValue());
      }
   }
};
{code}

It should somehow be possible to inherit the custom substitution properties into the new {{JoranConfigurator}}. Otherwise they are lost on re-configuration.

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