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Aleksei Sviridkin 5976ddf02f fix(gateway): normalise the GatewayClass name and refuse a blank one
The class lists arrive over the values channel comma-joined, so every
reader trims each entry as it splits them. The scalar those entries are
compared against was not trimmed anywhere. A class name carrying a
stray space therefore failed `has` against its own padded self, and the
two readers of that scalar disagreed about the same class: the gateway
chart put the tenant on an edge-terminated class, while the
cluster-wide ACME issuers still pinned their solver to a listener an
edge Gateway does not render. That stops every HTTP-01 certificate in
the cluster from issuing, with nothing in any status naming the cause.

Normalise once at the single writer so both readers see a clean value,
and keep a defensive trim at each reader. The tenant's own choice does
not travel that channel — it comes from tenant.spec.gatewayClass — so
it is trimmed where the gateway chart reads it.

Unset and whitespace-only are different events and no longer share an
outcome. Unset means the choice was not made, and falling back to the
bundled class stays its documented behaviour. Whitespace-only means a
choice was made and is garbage, in the field that decides where TLS
terminates: resolving it quietly would take a tenant the operator meant
to put behind an edge terminator and publish it directly, with a real
certificate on a real address. Both the platform default and the
tenant's own choice now refuse it by name.

The kind check beside that refusal is part of the same fix, not a tidy
up. Through Helm's values path an unquoted numeric scalar arrives as a
float64, and the whitespace check compares it against a string, so
`className: 123` dies at that comparison — one line before the trim —
with an error naming neither the key nor the file. Refusing whitespace
without checking the kind first would therefore have made the numeric
case worse than it was. `kindIs "string"` is the right test because it
never has to name the type that actually arrived.

The order of the guard's steps is part of the guard. The value is read
before anything normalises it, so a default that fires on any falsy
value cannot launder 0 or false into the empty string and resolve them
to the bundled class ahead of the kind check. Unset is the one case
that still falls back, and each of those four inputs is pinned, so a
normalisation drifting back ahead of a check fails rather than quietly
covering only the loudest bad input.

Also correct a cleanup log line: the wildcard Certificate is deleted
for every mode that is not DNS-01, so naming HTTP-01 in that message is
wrong for existingSecret and for edge alike. And state the listener
name invariant plainly: the cap is 253, not the 63 of a DNS label, and
the longest name the builders produce is 84.

Assisted-by: LLM
Signed-off-by: Aleksei Sviridkin <3811295@gmail.com>
2026-09-04 14:33:35 +03:00
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