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An older build request never replaces a newer one's artifact

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Builds of one module in flight together finish in any order, and the mesh
took whatever it heard last as what the module is: RegisterModule overwrote
the module's manifest unconditionally, and Held/BuiltAgainst/ReadRepositories
ordered builds by when they were recorded. A postgres build asked before the
mesh-tools runtime fix finished after the one asked after it, and the next
push deployed the stale image (novox/hq issue 219).

A build is now ordered by when it was asked, read from the build-<nanos> id
the controller writes: build.asked and module.built_asked (migration 0055).
A registration from an earlier request than the module's current one is
recorded and refused as superseded. A plan takes as its outcome only a build
asked at or after its own ask, so an earlier plan's leftover build cannot
settle a later plan. Ids of any other shape keep the old order.
This commit is contained in:
jochen
2026-10-04 00:22:11 +02:00
parent c0c3c3fed4
commit 9745c1ab31
10 changed files with 375 additions and 27 deletions
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cmd/mesh-controller/build.go
+14 -2
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@@ -148,6 +148,11 @@ func buildFrom(result link.BuildResult) inventory.Build {
// rebuild the graph rather than a list of names.
Path: result.Path,
}
// When it was asked, which is what orders it against another build of the same module
// (novox/hq 04-ISSUES/219) — not when it was heard.
if asked, ok := link.BuildAskedAt(result.ID); ok {
kept.Asked = asked
}
for _, ref := range result.Against {
kept.Against = append(kept.Against, catalogue.Recorded(ref))
}
@@ -409,7 +414,7 @@ func buildOne(ctx context.Context, source buildSource, path, ref string, wait ti
// Correlated by something the control plane makes, not by the module's name: two builds of one
// module can be in flight, and the second answer is not the first one's.
request := link.BuildRequest{
ID: fmt.Sprintf("%s-%d", "build", time.Now().UnixNano()),
ID: link.NewBuildID(time.Now()),
Repository: repository,
Path: path,
Ref: ref,
@@ -526,6 +531,9 @@ func takeIn(ctx context.Context, inv *inventory.Inventory, result link.BuildResu
BuiltFrom: result.Commit, Head: result.Commit,
// What it stood on, so registration can judge a built manifest's base (to-be 38 WP2.4).
Against: kept.Against,
// When it was asked, so an older request heard later does not replace a newer one
// (novox/hq 04-ISSUES/219).
Asked: kept.Asked,
}
if result.Source != nil && result.Source.Seat != "" {
recorded.Repository, recorded.Seat = result.Source.Repository, result.Source.Seat
@@ -544,6 +552,10 @@ func takeIn(ctx context.Context, inv *inventory.Inventory, result link.BuildResu
result.On, result.Repository, short(result.Commit), err)
}
if err := inv.RegisterModule(ctx, manifest, recorded); err != nil {
if errors.Is(err, inventory.ErrSuperseded) {
return manifest, kept, fmt.Errorf("%s built %s (%s), recorded and not registered: %w",
result.On, manifest.Module, short(result.Commit), err)
}
return manifest, kept, err
}
return manifest, kept, nil
@@ -573,7 +585,7 @@ func buildAndShow(ctx context.Context, source buildSource, path, ref string, wai
defer ask.Close()
result, err := ask.Submit(ctx, link.BuildRequest{
ID: fmt.Sprintf("%s-%d", "build", time.Now().UnixNano()),
ID: link.NewBuildID(time.Now()),
Repository: repository, Path: path, Ref: ref,
Held: heldBy(ctx), Seats: seatBases(ctx),
}, wait)