jschoubben
b48572bdfc
Review of the registry hand-over. The proxy's bodyLimit treated an absent key and a JSON null alike, so a `max-request-body: null` was served unlimited here while the adapter skipped it and the catalogue refused it — one provider carrying what the others refuse. Presence is now checked before the value is read. The catalogue-backed test asserted the gate pulling the store in beside it as the feature. It was the fault: a node-scoped requirement with one candidate installs that candidate, so a gate assigned to a machine without the store raised a second, empty one there behind the real credentials and the public name. The store's seat is one per mesh now (mesh-catalog), and the test asserts the refusal by name. Delete is asserted only behind the lock. hq ADR 0082/0104, the registry hand-over.
examples
Things that run, kept here because a contract is easier to read as working code than as prose.
Nothing here is part of the control plane. The control plane decides and never touches a machine (README); everything in this directory runs on a machine and touches it. These are reference implementations of contracts the control plane defines, and a real one ships with the module that ships the software it configures.
postgres-provisioner |
the last step of a credential: reads what the mesh delivered and makes PostgreSQL accept it |
Running the provisioner
--watch reconciles now and again whenever what the mesh delivered changes. That is what lets it
be a module: an ordinary long-running service the host supervises, rather than something that has
to be invoked after every declaration by a timer or a unit wired to a file.
It polls rather than watching the filesystem, because the host writes atomically — the file is replaced, so a watch on the path stops seeing anything after the first replacement. A watcher that silently stops working is worse than a poll.
Credentials are compared by digest and never by content. This runs for as long as the machine is up, and a secret does not belong in a long-lived variable when a hash answers the same question.