VDI_Resolve -> VRT, default behaviour for no healthy() cb

Nils Goroll slink at schokola.de
Wed May 9 15:28:48 UTC 2018

I'm picking up two loose threads from #varnish-hacking:


I'm working on a director which needs to resolve another (layered) director
argument, so I'd prefer to have basically VDI_Resolve in VRT. Proposed signature:


the VCL_BACKEND argument would be used instead of bo->director_req.
Also I'd want to move the logging calls to the caller.

avoid director healthy() callback

To avoid code duplication, I think core code should basically call

	VRT_Healthy(VRT_Resolve(ctx, backend));

if there is no healthy callback. IMHO this would make much more sense than just
asserting a director without a healthy callback to be healthy always.

Thx, Nils

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