Mikael Ståldal created LOG4J2-1465:
--------------------------------------
Summary: Default layouts for various appenders could be more
consistent
Key: LOG4J2-1465
URL: https://issues.apache.org/jira/browse/LOG4J2-1465
Project: Log4j 2
Issue Type: Improvement
Components: Appenders
Affects Versions: 2.6.2
Reporter: Mikael Ståldal
The appenders with layout support have different layouts as default. This could
be improved, made more consistent and better documented:
According to documentation:
* ConsoleAppender - pattern %m%n
* FileAppender - no default
* FlumeAppender - RFC5424Layout
* JMSAppender - SerializedLayout
* KafkaAppender - formatted message
* MemoryMappedFileAppender - no default
* RandomAccessFileAppender - no default
* RollingFileAppender - no default
* RollingRandomAccessFileAppender - no default
* SMTPAppender - SerializedLayout
* SocketAppender - SerializedLayout
* JeroMQAppender - _If you do not specify a layout, the appender uses the
default pattern appender returned by PatternLayout.createDefaultLayout()_
This is not accurate though, e.g. FileAppender (and its variants) have pattern
%m%n as default.
First we should update the documentation to match the implementation. But maybe
we should also consider changing some of the defaults.
I think that pattern %m%n make sense as default for Console and the various
File appenders.
I assume that RFC5424 make sense as default for Flume, but I don't know about
Flume.
I don't think that pattern %m%n make sense as default for JeroMQ. And it was
probably a mistake (by me) to make formatted message as default for Kafka.
And as highlighted by https://issues.apache.org/jira/browse/LOG4J2-1226 it's
not good to have SerializedLayout as default for any appender.
I suggest that the "generic binary" appenders JMSAppender, KafkaAppender,
SocketAppender and JeroMQAppender have no default layout, make it mandatory to
specify a layout for them. That will force the user to make a conscious choice
of layout, which I think is good.
SMTPAppender should probably have pattern %m%n as default just like Console and
File.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
