[PATCH v3 03/11] Introduce IPROTO_REQUEST_STATUS command

[Vladimir Davydov]

On Thu, Jul 19, 2018 at 10:10:31AM +0300, Konstantin Osipov wrote:
> * Vladimir Davydov <vdavydov.dev at gmail.com> [18/07/14 23:50]:
> > The new command is supposed to supersede IPROTO_REQUEST_VOTE, which is
> > difficult to extend, because it uses the global iproto key namespace.
> > The new command returns a map (IPROTO_STATUS), to which we can add
> > various information without polluting the global namespace. Currently,
> > the map contains IPROTO_STATUS_IS_RO and IPROTO_STATUS_VCLOCK keys,
> > but soon it will be added info needed for replica rebootstrap feature.
> 
> Would it be possible to move out struct status from xrow.h and
> rename to box_status and move to box.h or some other place?

Then xrow.c would have to include box.h ...

> Perhaps we should remove it altogether, and simply pass multiple
> members to xrow_decode_status()?

There are already three members in a reply to a status request and may
be more in future. Passing them all in function arguments would look
cumbersome. We definitely need to group them somehow.

> 
> Other request member combos, such as authentication or call or eval have
> not leaked into xrow.h before. 

greeting, auth_request, call_request, request - they are all defined in
xrow.h