[jira] [Commented] (LOG4J2-952) FAQ: How do I configure log4j2 programmatically in code without a configuration file?

["Bart S. (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/LOG4J2-952?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14693918#comment-14693918 ] 

Bart S. commented on LOG4J2-952:
--------------------------------

You'd still have a configuration file, just not on disk. But thanks for the pointer. To do it without XML file you need a lot of program calls. The API is not yet up to par with what you need to do, because for the lack of Builder methods mostly and essentially the difficulty in discovering what you need to do. I might write something for that when I have the time and the ability and the knowhow to do so.

> FAQ: How do I configure log4j2 programmatically in code without a configuration file?
> -------------------------------------------------------------------------------------
>
>                 Key: LOG4J2-952
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-952
>             Project: Log4j 2
>          Issue Type: Bug
>          Components: API, Configurators, Documentation
>    Affects Versions: 2.1
>            Reporter: Joe Merten
>
> I found [this link|http://logging.apache.org/log4j/2.x/faq.html#config_from_code] which said:
> {quote}
> You could use the static method #initialize(String contextName, ClassLoader loader, String configLocation) in org.apache.logging.log4j.core.config.Configurator. (You can pass null for the class loader.) Be aware that this class is not part of the public API so your code may break with any minor release.
> {quote}
> This documentation is unclear because it points to a member function which needs a filename {{configLocation}} where as the topic is »without a configuration file«.
> It shoud rather point to the member function {{org.apache.logging.log4j.core.config.Configurator.initialize(ClassLoader loader, ConfigurationSource source)}}.
> Example:
> {code:java}
> import org.apache.logging.log4j.core.config.ConfigurationSource;
> import org.apache.logging.log4j.core.config.Configurator;
> final String hardCodedXmlConfig =
>         "<?xml version='1.0' encoding='UTF-8'?>\n" +
>         "<Configuration status='INFO'>\n" +
>         "  <Appenders>\n" +
>         "    <Console name='Console' target='SYSTEM_OUT'>\n" +
>         "      <PatternLayout pattern='%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n'/>\n" +
>         "    </Console>\n" +
>         "  </Appenders>\n" +
>         "  <Loggers>\n" +
>         "    <Root level='debug'>\n" +
>         "      <AppenderRef ref='Console'/>\n" +
>         "    </Root>\n" +
>         "  </Loggers>\n" +
>         "</Configuration>\n";
> try {
>     Configurator.initialize(null, new ConfigurationSource(new ByteArrayInputStream(hardCodedXmlConfig.getBytes())));
> } catch (IOException e) {
>     e.printStackTrace();
> }
> {code}



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