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Act under a lease, keep accounts by order, one writer at composition (hq to-be 45 Phase 2)

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Two controllers could both act (issue 204), a reconcile's report could
overtake the apply after it and the digest decided (issue 267), and a grant
could make a second writer of a machine's report.

- The lease (internal/lease, ADR 0229): mesh-controller_lease key `holder`,
  15 s age, renewed every 5 s by compare-and-set; the epoch is the revision
  it was taken at. The gate is the clock (stops 3 s before expiry); a refused
  renewal is a loss and the process exits; a holder that stops gives it back.
  serve takes it before asserting the bus. Epochs kept in the store
  (migration 0068 controller_epoch) as a floor: a bucket raised from nothing
  is compacted past it. Unleased (no epoch, S12 urgent) only when nobody
  holds it and the bus will not let it be written. A shell command acts
  under the holder's epoch, or its own lease when none.
- Declarations carry `epoch` inside the signed envelope, only to a machine
  whose latest account carried a report_sequence (mesh-host #35); would-send
  is composed with the epoch last sent. Allot and the send both pass the gate.
- Reports: contract in internal/link/order.go (epoch, sequence,
  report_sequence, older_than, refused_older). Accounts kept by epoch, then
  sequence, then report sequence; older refused, counted; unordered reports
  keep the digest rule. Plans by compare-and-set on a revision, with epoch.
  Conditions and calls carry the epoch and are not written off the lease.
- S12 and S13 (naming the writer by epoch) watched, D5 run; reset of the
  bucket said. Writers table compiled in and enforced in PermissionsFor; the
  controller no longer publishes mesh.control.>. A contract per consumed
  kind, and the empty-on-error lint over the repository.
- mesh-host pinned to its main with the epoch in the validator (D1 validates
  the envelope as sent).

Needs mesh-host's genesis lock with the lease grant (mesh-host PR) for
TestTheInstallersFirstUserListIsWhatTheControllerWouldCompose.
This commit is contained in:
jochen
2026-10-06 12:29:18 +02:00
parent 070ecafc07
commit 2eb9a22c24
59 changed files with 3975 additions and 158 deletions
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cmd/mesh-controller/sendable.go
+8
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@@ -22,6 +22,11 @@ type sendable struct {
// under the node's hold just before the body is made (novox/hq 04-ISSUES/107). Zero is not sent
// at all, which a host reads as "no order claimed" — the shape of every declaration before this.
Sequence int64
// Epoch is the controller lease's epoch it was composed under (novox/hq to-be 45 §6): a machine that
// heard a later epoch refuses it. Zero is not sent at all — every machine whose node-engine has not
// said it reads one is sent none, because an older node-engine refuses a key it does not know, whole
// (link/order.go, the contract).
Epoch uint64
// Adoption is nil for a converged node, and then the body is byte for byte what it was before
// adoption existed: an older host parses the envelope strictly and would refuse the key.
Adoption *adoptionEnvelope
@@ -70,6 +75,9 @@ func (s sendable) Body() ([]byte, error) {
if s.Sequence > 0 {
envelope["sequence"] = s.Sequence
}
if s.Epoch > 0 {
envelope["epoch"] = s.Epoch
}
if len(s.LeftOut) > 0 {
envelope["left_out"] = s.LeftOut
}