On Tue, Jun 16, 2015 at 3:27 PM, Poul-Henning Kamp <[email protected]> wrote:
> --------
> In message
> <cabovn9cj8cadbpv7xccdm7d2vzuscx90lkqah-itpl3qc7t...@mail.gmail.com>
> , Dridi Boukelmoune writes:
>
>>Continuing on the dynamic backends track, here is a patch to allow
>>manipulation of probes. It is not usable yet, but will hopefully be
>>soon.
>
> Please say a little bit more or write a mock-up VCL ?
Sure, it will allow dynamic backends to have probes, and not force
vmod writers to build the probes themselves (but they could too,
probes have been miniojb'd). A vmod building a dynamic backend
could use a native VCL static probe.
--->8-------->8-------->8-------->8-------->8-------->8---
import std;
import vmod;
probe www_probe {
...
}
sub vcl_init {
new dir = vmod.construct(..., www_probe);
}
sub vcl_recv {
set req.backend_hint = dir.backend();
}
sub vcl_hit {
if (std.healthy(req.backend_hint)) {
...
}
}
--->8-------->8-------->8-------->8-------->8-------->8---
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