[logback-dev] log file parser requierements

[Tony Trinh]

Hi Johannes,

Thanks for jumping in. :-)  I'm open to design-changes you might have in
mind (including refactoring some/all components).

Tony


On Mon, Apr 22, 2013 at 4:33 PM, ceki <ceki at qos.ch> wrote:

> Tony Trinh has done quite a bit of work on logback-decoder. The
> exchange in [1] is probably worth reading.
>
> Given a pattern, the core idea is to create regular expressions from
> that pattern. Once we have the regular expression containing grouping
> instructions, we can capture various ILoggingeEvent fields.
>
> Tony has written several classes under the
> ch.qos.logback.decoder.regex package for this purpose.
>
> Assuming each log line corresponds to a ILoggingEvent, once we have
> the correct regular expression, we can go through the file and convert
> each line into an ILoggingEvent.
>
> I think it is easier to start by solving this sub-problem before
> trying to convert events spanning multiple lines.
>
> We can also ignore AccessEvent conversions (events generated by
> logback-access) in the initial stages of the project.
>
> [1] http://markmail.org/message/**wqqaxztmjqfuklri<http://markmail.org/message/wqqaxztmjqfuklri>
>
>
> On 22.04.2013 23:04, Johannes Bühler wrote:
>
>> Hi Ceki,
>> Sounds good to me to get started.
>>
>> Thanks,
>> Johannes
>>
>> On Monday, April 22, 2013 at 10:49 PM, ceki wrote:
>>
>>
>>> Hi Johannes,
>>>
>>> Cool.
>>>
>>> The goal of logback-decoder is to convert one or more lines found in a
>>> log file (containing text) into a series of objects of type
>>> ILoggingEvent. Thus, FileAppender converts instances of ILoggingEvent
>>> into one or more lines in a log file, a decoder performs the inverse
>>> operation.
>>>
>>> It should be assumed that the first line of the log file contains the
>>> pattern that was used to format the output. See
>>> http://logback.qos.ch/manual/**encoders.html#**outputPatternAsHeader<http://logback.qos.ch/manual/encoders.html#outputPatternAsHeader>for
>>> further details.
>>>
>>> Is the above sufficient to get you started?
>>>
>>> On 22.04.2013 22:27, Johannes Bühler wrote:
>>>
>>>> Hi all,
>>>> Ceki asked for a volunteer for writing a logback log file parser. I am
>>>> interested in doing it.
>>>> Are there already some initial requierements available?
>>>> Looking forward to it!
>>>>
>>>> Cheers,
>>>> Johannes
>>>>
>>>
>>>
>
> --
> Ceki
> 65% of statistics are made up on the spot
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