Code review comment for lp://staging/~xaav/loggerhead/export-tarball

> On Wed, Jun 1, 2011 at 9:46 AM, Geoff <email address hidden> wrote:
> >> 3) The export function is a copy-paste-tweak of the core from bzrlib. This
> will lead to bugs as
> >> that code base evolves - we should instead get a supported function in
> bzrlib lib that we can
> >> import and use.
> >
> > Well, there is only one problem with that. According to the WSGI spec, you
> must return an iterable that will export the blocks. If I were to call the
> provided function, it would be impossible to break the response into pieces
> because the provided function would export it all at once. I know that it is a
> copy and paste tweak, but there is really no way I can inject the 'yield'
> keyword into the provided function. If you have another suggestion, I would be
> glad to hear it.
>
> Extract the function in bzrlib into two parts - a generator (what you
> have here) and a consumer than consumes it all triggering the writes.
>
> Then we can reuse the generator.

Okay, I see what you mean.