How much time are we talking about between logback initialization and
the time where the value of the property is known?
On 04.09.2012 14:38, Thorbjørn Ravn Andersen wrote:
We have done plain old “just log to a new file for the duration of the
program – delete old logs daily” for several years now and found it
works well for us.
Now I have a rather tricky situation where part of the file name to be
used by (a subclass of) FileAppender needs to be supplied by my code,
but the initialization phase of the application contains log statements
triggering the initialization of logback _/before/_ the property
referred to by the FileAppender name string is set causing the log file
to have an incorrect name.
Basically what I have found to be the behavior I want is for logback to
await opening the file and write data before I say it can.
Question is how I can do this within the limits of logback. Can I tell
logback to just buffer events in memory (this will only be for a few
seconds, and memory will most likely not be an issue) – some kind of
valve? Can I tell FileAppender to write to a temporary file and rename
it whenever the name is ready (perhaps using some of the Policies from
RollingFileAppender)?
Any suggestions on how to handle this?
Note: As we restart our application daily we do not need
RollingFileAppender for our general logging – instead we have subclassed
FileAppender to remove “older than X days” files from the target
folder. This has proven to work very well for our scenario.
Thanks
/Thorbjørn
--
Ceki
http://tinyurl.com/proLogback
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