[logback-user] Multiple log files to single archive

[PaSik]

Well, we have configured a rolling appender by date and size and have an app that produces lots of logs - hundreds of 40MB files. We have a script that compresses those files at the end of the day but we have some problems with it - sometimes files are locked by logback, there's also the topic of multiple environments. It'd be nice if the logback itself did it for us, but I don't want to end up with hundreds od zip files instead.

Anyway, thanks for your insight. If I do decide to implement something and it works I'll then create a ticket with the contribution.

Regards,
Tom

David Roussel <nabble at diroussel.xsmail.com> wrote:

>Tom,
>
>If you create a ticket no one is going to do the work for you as I don't think anyone else needs this functionality. If you implement it by all means pleas contribute back. I'm not a commiter, just a user.
>
>You could start by subclassing one of the existing rolling implementations and add in your extra logic. 
>
>It does all seem to get complicated quickly. How do you configure the archive interval? A new tag in the confg? How do you match all the older files, but not the current one etc. 
>
>What advantage do you think you are gaining from this scheme you are suggesting?
>
>David
>
>> On 2 Oct 2013, at 08:35, PaSik <tompasik at poczta.fm> wrote:
>> 
>> I wasn't aware that Java doesn't provide any API to modify ZIP archives, that's a shake :-(
>> Do you think it would be doable if the request would be to create the zip archive once at the time the archive should roll. I guess the concept of rolling should be twofold - the log files roll independently of the archives and the archives roll every n archive rolls. The moment the archive rolls all logs should be archived. 
>> In case of %d{yyyy-MM-dd}.%i.zip pattern on every change of %i the next log would be created (no archiving happens at this time) and on the change of the date the rolling should happen as usual but also all the %i logs created on the previous date should be archived. 
>> Do you think I can create a ticket for such a feature?
>> 
>> Regards,
>> Tom
>> 
>> David Roussel <nabble at diroussel.xsmail.com> wrote:
>> 
>>> No that is not supported. 
>>> 
>>> Note that there are no java APIs (that I know of) for modifying a zip file. The only way to add a file to an existing zip file is to create a new zip file with the file added and then delete the old zip file. 
>>> 
>>> David
>>> 
>>>> On 1 Oct 2013, at 09:57, PaSik <tompasik at poczta.fm> wrote:
>>>> 
>>>> Hi,
>>>> 
>>>> Could you please tell me whether it's possible to configure logback in such a way that multiple log files are compressed to a single, possibly already existing archive (existing because logback itself has already put some log Giles in this archive).
>>>> 
>>>> The current use case is that I'd like to have a RollingFileAppender with SizeAndTimeBasedFNATP with fileNamePattern=mylog-%d{yyyy-MM-dd}.%i.zip and have the log files archived to mylog-%d{yyyy-MM-dd}.zip.
>>>> 
>>>> Another use case would be an app that doesn't produce much logs and the loga would be produced to daily files but the archives would be monthly.
>>>> 
>>>> Thanks,
>>>> Tom
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