happyDomain/checker-sdk-go
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Pierre-Olivier Mercier d847c71a50 checker: let CheckRule.Evaluate return per-subject CheckStates 
Rules that iterate over multiple elements (certificates, CAA records,
nameservers, …) previously had to squash per-element results into a
single concatenated message. Evaluate now returns []CheckState and
CheckState carries an opaque Subject, so each element gets its own
structured state. The server injects a StatusUnknown placeholder when
a rule returns nothing, to avoid silently dropping the rule.
2026-04-23 12:24:56 +07:00
checker checker: let CheckRule.Evaluate return per-subject CheckStates 2026-04-23 12:24:56 +07:00
go.mod Initial commit 2026-04-08 00:53:15 +07:00
LICENSE Initial commit 2026-04-08 00:53:15 +07:00
NOTICE Initial commit 2026-04-08 00:53:15 +07:00
README.md Initial commit 2026-04-08 00:53:15 +07:00

README.md

checker-sdk-go

Public Go SDK for writing happyDomain checker plugins.

This module provides the stable types, helpers, and HTTP server scaffolding that all checker plugins need, independent of the happyDomain server itself.

Why a separate module?

The happyDomain server is licensed under AGPL-3.0 (with a commercial option). If checkers had to import the server's internal packages, every checker, even trivial ones, would inherit those licensing constraints.

This SDK is released under the Apache License 2.0, so:

  • You can write a checker plugin under any license you want (MIT, Apache, proprietary, AGPL, whatever fits your needs).
  • A plugin built against this SDK is not a derivative work of happyDomain.
  • happyDomain itself depends on this SDK (as an Apache-licensed dependency, which is compatible with AGPL).

Installation

go get git.happydns.org/checker-sdk-go/checker

Getting started

See checker-dummy for a fully working, documented template.

License

Apache License 2.0. See LICENSE and NOTICE.