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Refuse build, rebuild and replay --register by name, naming what replaced them, and delete the hand builds (issue 1851, A11a, ADR 0501 §5)

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jschoubben
2026-10-22 19:05:04 +02:00
parent f76da2ce9c
commit c7039d81e1
18 changed files with 91 additions and 1032 deletions
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cmd/mesh-controller/queue.go
+11 -191
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@@ -477,89 +477,6 @@ func clearQueue(ctx context.Context, js *broker.JetStream, open *stores, seat st
return b.String(), nil
}
// rebuildCommand asks the module's current source again — or, given a build's id, that build's
// repository, path and ref — under a new id.
func rebuildCommand(ctx context.Context, args []string) error {
if len(args) != 1 {
return errors.New("rebuild <module | build id>")
}
open, err := openStores(ctx)
if err != nil {
return err
}
defer open.Close()
inv := open.inventory
entries, err := inv.Catalogued(ctx)
if err != nil {
return err
}
var source buildSource
var path, ref, module string
if b, found, err := inv.BuildByID(ctx, args[0]); err != nil {
return err
} else if found {
source, module = sourceOfBuild(b, entries)
path, ref = b.Path, b.Ref
// **A build at a commit is rebuilt at what its module follows now** (novox/hq ADR 0219, issue
// 219): asked now, a rebuild of an old commit would be the newest ask of the module and roll
// that commit out over everything since. Building that commit again is `replay`, which says
// what it would do and refuses to register it while anything newer is asked or registered.
if e, known := entryNamed(entries, module); known && ref != "" && followedBranch(ref) == "" {
ref = followedBranch(e.Source.Ref)
follows := ref
if follows == "" {
follows = "the repository's default branch"
}
fmt.Printf("%s was built at commit %s; a rebuild asks what %s follows now, %s — `replay %s` "+
"builds that commit\n", b.ID, short(b.Ref), module, follows, b.ID)
}
} else if e, known := entryNamed(entries, args[0]); known {
// As a plan asks it: the branch it follows, never a commit a build once named (issue 215).
source = buildSource{Repository: e.Source.Repository, Seat: e.Source.Seat}
path, ref, module = e.Source.Path, followedBranch(e.Source.Ref), e.Manifest.Module
} else {
return fmt.Errorf("%s is neither a module the catalogue holds nor a build the mesh recorded", args[0])
}
// **A module a plan holds unbuilt, or failed, joins that plan** rather than running beside it: the
// plan would ask it again, or stay failed on an outcome a rebuild has replaced. A walk waiting for its word
// is not joined (novox/hq issue 754): the rebuild runs beside it, and says so.
var beside string
if module != "" {
joined, said, err := joinAPlan(ctx, open, module)
if err != nil {
return err
}
if joined {
fmt.Println(said)
return nil
}
beside = said
}
id, err := askABuild(ctx, source, path, ref)
if err != nil {
return err
}
recordAsked(ctx, inventory.BuildRequest{ID: id, Repository: source.Repository, Seat: source.Seat, Path: path,
Ref: ref, For: "rebuild"})
if beside != "" {
fmt.Printf("rebuild asked as %s, beside the walk: %s\n", id, beside)
return nil
}
fmt.Printf("rebuild asked as %s\n", id)
return nil
}
// entryNamed is the catalogue's entry for a module.
func entryNamed(entries []inventory.Entry, name string) (inventory.Entry, bool) {
for _, e := range entries {
if e.Manifest.Module == name {
return e, true
}
}
return inventory.Entry{}, false
}
// sourceOfBuild is where a recorded build's repository is asked from: the catalogued module's own
// source when the build is of one — on its seat, so the outcome registers it as the mesh records it
// (ADR 0111) — else the repository as it was cloned.
@@ -576,14 +493,17 @@ func sourceOfBuild(b inventory.Build, entries []inventory.Entry) (buildSource, s
// replayCommand asks a recorded build's repository and path again at the commit it built.
func replayCommand(ctx context.Context, args []string) error {
set := flag.NewFlagSet("replay", flag.ContinueOnError)
register := set.Bool("register", false, "register what it builds, as any build is")
older := set.Bool("older", false, "with --register: even though a newer build of the module is registered")
register := set.Bool("register", false, "removed (novox/hq ADR 0501 §5): refused by name")
positionals, err := parseAround(set, args)
if err != nil {
return err
}
// **Registering a replay goes with the asks** (novox/hq ADR 0429 §18, ADR 0501 §5): refused by name.
if *register {
return removedByName("replay --register")
}
if len(positionals) != 1 {
return errors.New("replay <build id> [--register [--older]]")
return errors.New("replay <build id>")
}
open, err := openStores(ctx)
if err != nil {
@@ -603,86 +523,15 @@ func replayCommand(ctx context.Context, args []string) error {
return err
}
source, module := sourceOfBuild(b, entries)
var history []inventory.Build
if module != "" {
if history, err = inv.Builds(ctx, module, 100); err != nil {
return err
}
if b.Commit == "" {
return fmt.Errorf("%s recorded no commit — it failed before it knew what it was building, so there is "+
"nothing to replay", b.ID)
}
// What is asked of the module and not yet answered, when the replay would be registered.
var outstanding []string
if *register {
js, err := dialTheBus()
if err != nil {
return err
}
q, err := link.ReadQueue(ctx, js, buildSeatHeld(ctx))
js.Close()
if err != nil {
return err
}
plans, err := inv.OpenPlans(ctx)
if err != nil {
return err
}
outstanding = outstandingFor(module, b.Repository, b.Path, q, plans)
}
if err := replayRefusal(b, module, history, *register, *older, outstanding); err != nil {
return err
}
asker := ""
if *register {
asker = "replay"
}
id, err := buildOneAsked(ctx, source, b.Path, b.Commit, 0, !*register, asker)
id, err := buildOneAsked(ctx, source, b.Path, b.Commit, 0, true, "")
if err != nil {
return err
}
fmt.Println(replaySaid(b, module, id, *register))
return nil
}
// replayRefusal is why a replay is not asked, or nothing (novox/hq ADR 0219, issue 207).
//
// A replay re-asks a recorded build at the commit it built, under a new id — and an id is when it
// was asked, which is what orders builds of one module (issue 219). So a registered replay of an
// older commit is newer than everything since, and would roll that older commit out as the module's
// current version: what issue 207 recorded happening by accident. It is therefore a dry run unless
// --register says otherwise, and --register is refused when a newer build of a different commit is
// registered, unless --older says that is the point.
//
// **And refused while anything newer is outstanding**, --older or not: an ask of the module in the
// queue, or an open plan holding it unbuilt. Asked now, the replay would be newer than those asks,
// and their builds — made from newer source — would be recorded and never registered (issue 219
// orders by ask), the plan waiting on them sending the older commit instead.
func replayRefusal(b inventory.Build, module string, history []inventory.Build, register, older bool,
outstanding []string) error {
if b.Commit == "" {
return fmt.Errorf("%s recorded no commit — it failed before it knew what it was building, so there is "+
"nothing to replay; `rebuild %s` asks its repository, path and ref again", b.ID, b.ID)
}
if older && !register {
return errors.New("--older only says what --register may do; a dry run registers nothing")
}
if register && len(outstanding) > 0 {
return fmt.Errorf("%s is asked and not yet answered — %s — and a registered replay asked now would "+
"replace what those build (novox/hq issue 219). Wait for them, or `replay %s` without --register to look",
orNone(module), strings.Join(outstanding, "; "), b.ID)
}
if !register || older {
return nil
}
for _, h := range history {
if h.ID == b.ID || !h.Worked() || h.Commit == b.Commit {
continue
}
if h.AskedOrAt().After(b.AskedOrAt()) {
return fmt.Errorf("a newer build of %s is registered — %s, from %s — and registering a replay of %s "+
"would roll that older commit out as %s's current version (novox/hq issue 207). `replay %s` "+
"without --register looks at it; --register --older registers it anyway",
module, h.ID, short(h.Commit), short(b.Commit), module, b.ID)
}
}
fmt.Println(replaySaid(b, module, id, false))
return nil
}
@@ -822,32 +671,3 @@ func holdersAmong(entries []inventory.Entry, seat string) []string {
sort.Strings(out)
return out
}
// outstandingFor is everything asked of a module and not yet answered: its asks in the build queue,
// by repository and path, and every open plan holding it not yet built.
func outstandingFor(module, repository, path string, q link.Queue, plans []inventory.Plan) []string {
var out []string
for _, a := range q.Asks {
if repositoryMatches(a.Repository, repository) && a.Path == path {
out = append(out, fmt.Sprintf("%s %s in the queue", a.ID, a.State))
}
}
if module == "" {
return out
}
for _, p := range plans {
if !p.Open() {
continue
}
for _, tier := range p.Tiers {
for _, m := range tier {
if m == module {
if st := p.Modules[m]; st == nil || st.State != "built" {
out = append(out, fmt.Sprintf("%s holds it not yet built", p.ID))
}
}
}
}
}
return out
}