Re: [PATCH] XLogReader v2

On Monday, July 23, 2012 04:17:39 PM Robert Haas wrote:
> On Mon, Jul 23, 2012 at 3:19 AM, Andres Freund <andres@2ndquadrant.com> 
wrote:
> > On Thursday, July 19, 2012 07:18:08 PM Satoshi Nagayasu wrote:
> >> I agree with that we need more sophisticated way to share the code
> >> between the backend and several utilities (including xlogdump),
> >> but AFAIK, a contrib module must allow to be built *without* the core
> >> source tree.
> > 
> > I don't think thats reasonable. The amount of code duplication required
> > to support that usecase is just not reasonable. Especially if you want
> > to support pre 9.3 and 9.3+.
> 
> It seems like the direction this is going is that the xlog reading
> stuff should be a library which is used by both the backend and 1 or
> more xlog decoding tools.
Thats fine for the xlogreader itself - it only uses stuff from headers. The 
problem is that the xlog debugging/printing infrastructure is pretty much 
guaranteed to include just about the whole backend...

Andres
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