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https://issues.apache.org/jira/browse/LOG4J2-1178?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14974843#comment-14974843
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Ralph Goers commented on LOG4J2-1178:
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OK. So now I understand that the JDBC driver wants to add a new destination to
write to. How does it get written to? Is the JDBC driver using the Log4j API?
I don't see you configuring any Loggers to use the appender you added. So how
will events end up being routed to the appender. If you are adding Loggers how
are you going to know the names to add?
> Support use-case for JDBC's DataSource.setLogWriter(PrintStream)
> ----------------------------------------------------------------
>
> Key: LOG4J2-1178
> URL: https://issues.apache.org/jira/browse/LOG4J2-1178
> Project: Log4j 2
> Issue Type: Bug
> Components: Appenders
> Environment: Apache Maven 3.3.3
> (7994120775791599e205a5524ec3e0dfe41d4a06; 2015-04-22T04:57:37-07:00)
> Maven home: C:\Java\apache-maven-3.3.3\bin\..
> Java version: 1.7.0_79, vendor: Oracle Corporation
> Java home: C:\Program Files\Java\jdk1.7.0_79\jre
> Default locale: en_US, platform encoding: Cp1252
> OS name: "windows 7", version: "6.1", arch: "amd64", family: "windows"
> Reporter: Gary Gregory
>
> I am writing a JDBC driver. The JDBC Spec has a a method
> [DataSource.setLogWriter(PrintStream)|https://docs.oracle.com/javase/8/docs/api/javax/sql/CommonDataSource.html#setLogWriter-java.io.PrintWriter-]
> API drivers should implement.
> Users can drop our driver into any tool that talks JDBC or write their own
> apps. In am concerned about the 'drop the driver anywhere' scenario, like in
> an Eclipse based tool; that may or may not use Eclipse DTP. Or anything else.
> The
> [setLogWriter()|https://docs.oracle.com/javase/8/docs/api/javax/sql/CommonDataSource.html#setLogWriter-java.io.PrintWriter-]
> API can be called at any time, after Log4j has initialized itself for
> example.
> I do all my driver logging through Log4j. If a tool calls
> [setLogWriter()|https://docs.oracle.com/javase/8/docs/api/javax/sql/CommonDataSource.html#setLogWriter-java.io.PrintWriter-],
> I'd like the given PrintStream to become an Appender such that Log4j output
> appears there.
> The only way I see to do that is through pseudo-code like
> "getLoggerContext().getConfiguration().addAppender(PrintStreamAppender.createPrintStreamAppender(aPrintStream))"
> I think that would need to be followed by a full reconfigure.
> Can we use our new builder API to add to the current config and reconfigure?
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