... thanks to new API in libknot-2.7.
Apart from being simpler, it now rotates even uncached answers.

When at it, switch to generating the libzscanner bindings.

The _t isn't uint8_t* anymore but a structure with .len and .data.

To work on RRSIG TTLs, libknot >= 2.7.1 is needed.

Previously multiple kresd processes might use the same .lock file at
once and thus have a race between writing and renaming.  That could
happen relatively often if starting many instances *at once*.

The catch is that during configuration file processing,
no cache is open (yet), as kresd can't know if the config
does open it in some later part (with non-default path or size).
Now we just throw an error.  Exceptions:
 - cache.open() and cache.backends(), of course :-)
 - cache.ns_tout() - not required, it's not really inside cache
 - cache.close() - it sounds reasonable to allow "closing a closed cache"

This immediately caught a typo in cache metatable.

Petr Špaček authored 6 years ago and Vladimír Čunát committed 6 years ago

Closes: #320

Petr Špaček authored 6 years ago and Vladimír Čunát committed 6 years ago

Fix mess in daemon/lua/kres-gen.lua after
6e2ed9ec

Petr Špaček authored 6 years ago and Vladimír Čunát committed 6 years ago

Remove stray kr_zonecut_find_nsname() which somehow appeared in
45e38b3d.

Marek Vavruša authored 7 years ago and Grigorii Demidov committed 6 years ago

Previously the module was created on configuration time, so it wasn't
possible to inject custom endpoints to the default interface.

The handlers in Lua can now store per-request variables that are automatically
GC'd when the request is finished. This is useful for stateful modules,
such as DNS64 that uses internal option flags for state tracking.

The layers can now get a variable table like so:

```
local vars = kres.request_t(r):vars()
vars.hello = true
```

The variables are persisted between different layers for each request.

We don't need the end, but I prefer to get rid of the exception,
as we now require libknot > 2.6 anyway and it only implies adding
a few more binding lines.

Our Makefile required >= 2.6.4 for some time already.
It's pretty straightforward, except for zonefile.lua.in -> zonefile.lua

Marek Vavruša authored 6 years ago and Petr Špaček committed 6 years ago

Only get-set operations are added, added some tests.

Marek Vavruša authored 6 years ago and Vladimír Čunát committed 6 years ago

Checking query flags instead of global context option allows setting
overrides on individual queries. The effect is the same as query flags
start by copying request flags which start by copying context options.

Marek Vavruša authored 7 years ago and Vladimír Čunát committed 6 years ago

Wrapping the error code in a structure preserves both the numeric value
and the ability to convert it into textual format.

Marek Vavruša authored 7 years ago and Vladimír Čunát committed 6 years ago

This is generally useful for parsing records from packet, as they
are broken into individual RRs that need reassembling.

Marek Vavruša authored 7 years ago and Vladimír Čunát committed 6 years ago

This adds metatype wrappers for kr_cache_insert_rr and kr_cache_sync
for the cache metatype, and tests.

Marek Vavruša authored 7 years ago and Vladimír Čunát committed 6 years ago

This updates the metatype to wrap knot_rrset_add_rdata and knot_rrset_init_empty
in a nicer way, and adds automatic GC destructor and tests.

We use the knot style everywhere else; this was very similar and yet
different, so really annoying to me.  In the long term we might better
migrate to qp-tries from knot, but the API differs, so it's delayed...