Builder, checker and indexer count a build node's toolchain only where the catalogue's placement puts its build module, through mesh-sdk's one gate, and read the controller's assignments no more (issue 774, ADR 0549 §3, issue 1940)
This commit is contained in:
@@ -153,11 +153,11 @@ func run(ctx context.Context, getenv func(string) string, logOut io.Writer) erro
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}
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// The toolchains first, so a build that starts from the first modules value finds the nodes.
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watch := newToolchainWatch(ctx, js, tools, b.NodesChanged, logger)
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// Only the toolchain reports of nodes the build module is assigned to count (issue 1940): the controller's
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// assignments are settled first, so the toolchains settle through the gate already knowing them.
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gate := newToolchainGate([]string{buildrun.GoBuildModule, buildrun.NodeBuildModule}, tools.Put, logger.Printf)
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// Only the toolchain reports of nodes the catalogue places the build module on count (issue 1940, ADR 0549 §3): the
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// placement is settled first, so the toolchains settle through the gate already knowing it.
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gate := buildrun.NewToolchainGate([]string{buildrun.GoBuildModule, buildrun.NodeBuildModule}, tools.Put, logger.Printf)
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watch.put = gate.Toolchain
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assignErrs, err := watchAssignments(ctx, js, gate, b.NodesChanged, logger)
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placementErrs, err := buildrun.FollowPlacement(ctx, js, gate, b.NodesChanged, logger.Printf)
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if err != nil {
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return err
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}
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@@ -254,7 +254,7 @@ func run(ctx context.Context, getenv func(string) string, logOut io.Writer) erro
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return nil
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case err := <-errs:
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return err
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case err := <-assignErrs:
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case err := <-placementErrs:
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return err
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case err := <-watch.errs:
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return err
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@@ -0,0 +1,73 @@
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package main
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import (
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"bytes"
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"context"
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"errors"
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"log"
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"strings"
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"testing"
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"git.novox.be/novox/mesh-sdk/go/process"
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"github.com/nats-io/nats.go/jetstream"
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"git.novox.be/novox/mesh-sdk/go/delivery"
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"git.novox.be/novox/mesh-sdk/go/delivery/buildrun"
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)
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// 1945 (a part exits at start for a bucket it works without): a bus that refuses every toolchains bucket leaves the
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// watch unstarted and the part running, said; a refused bucket it cannot work without is an error naming the bucket and
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// its grant. The gate over the catalogue's placement, and its refusal, are mesh-sdk's (buildrun.ToolchainGate,
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// issue 774).
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func TestARefusedBucketIsSaidAndThePartGoesOn(t *testing.T) {
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set := &buildrun.ToolchainSet{}
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var logs bytes.Buffer
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logger := log.New(&logs, "", 0)
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refused := refusingBus{err: errors.New("nats: permissions violation for publish to $JS.API.CONSUMER.CREATE.KV_mesh-build-node_toolchains")}
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if err := newToolchainWatch(context.Background(), refusingBus{refuseOpen: true, err: refused.err}, set, func(context.Context) {}, logger).start(); err != nil {
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t.Errorf("a refused toolchains bucket stopped the start: %v", err)
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}
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if !strings.Contains(logs.String(), "cannot be read") {
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t.Errorf("the refusals were not said: %q", logs.String())
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}
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if _, err := process.EssentialBucket(context.Background(), refusingBus{refuseOpen: true, err: refused.err}, "builder", "mesh-delivery-indexer_modules", "work"); err == nil ||
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!strings.Contains(err.Error(), "grant of mesh-delivery-indexer_modules") {
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t.Errorf("a refused bucket the part needs: %v, want an error naming its grant", err)
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}
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// The gate's source (the previews' trunk heads): refused at start, the builder goes on, and a candidate asking a trunk
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// head is told why and opens it again then.
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src := &trunkSource{ctx: context.Background(), js: refusingBus{refuseOpen: true, err: refused.err}, heads: &sourceHeads{}, errs: make(chan error, 1), logf: logger.Printf}
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src.start()
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if _, err := src.head(context.Background(), 7, "novox/mesh-catalog"); err == nil || !strings.Contains(err.Error(), delivery.SourceBucket) {
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t.Errorf("a trunk head with the source refused: %v, want why", err)
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}
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if src.opened {
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t.Error("a refused source counts as opened, so it is never opened again")
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}
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}
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// refusingBus is a bus that refuses: every open (refuseOpen), or every watch of a bucket it opens, with err.
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type refusingBus struct {
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refuseOpen bool
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err error
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}
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func (r refusingBus) KeyValue(context.Context, string) (jetstream.KeyValue, error) {
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if r.refuseOpen {
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return nil, r.err
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}
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return refusedWatch{err: r.err}, nil
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}
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type refusedWatch struct {
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jetstream.KeyValue
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err error
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}
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func (r refusedWatch) WatchAll(context.Context, ...jetstream.WatchOpt) (jetstream.KeyWatcher, error) {
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return nil, r.err
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}
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func (r refusedWatch) Watch(context.Context, string, ...jetstream.WatchOpt) (jetstream.KeyWatcher, error) {
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return nil, r.err
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}
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@@ -1,211 +0,0 @@
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package main
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// This file is the same in mesh-delivery-indexer, mesh-delivery-builder and mesh-delivery-checker (issue 1940): it moves
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// to mesh-sdk go/delivery/buildrun once mesh-sdk can be delivered again, since a change of mesh-sdk waits on the very
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// toolchain agreement this file repairs.
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import (
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"context"
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"encoding/json"
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"fmt"
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"log"
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"maps"
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"slices"
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"strings"
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"sync"
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"time"
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"github.com/nats-io/nats.go/jetstream"
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"git.novox.be/novox/mesh-sdk/go/delivery"
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"git.novox.be/novox/mesh-sdk/go/provider"
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)
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// A build module writes <node>.<language> of its toolchains state on every node it runs on, and nothing deletes the key
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// when the module is unassigned from a node: the controller writes no module's state, and the module is gone. A report of
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// a node the build module no longer runs on is therefore not a builder (issue 1940: mesh-build-node unassigned from ace
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// on 2026-10-23 left ace.typescript at v26.12.0, and every Node fingerprint said "builders disagree").
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//
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// toolchainGate stands between the toolchains buckets and what takes their entries in (the indexer's PutToolchain, a
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// buildrun.ToolchainSet): an entry is passed on only while the controller's assignments (mesh-controller_assignments,
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// key <node>.<module>) hold an open assignment of its build module on its node, and only once it was written since that
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// assignment; it is passed on as deleted otherwise, said once, and passed on when its node writes it again. A report
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// written before the assignment is the one an earlier run of the module left (issue 1940, 2026-10-25 20:56: mesh-build-node
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// assigned to ace again brought ace.typescript v26.12.0 of 2026-10-23 back into the agreement, before the module ran
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// there, and the controller's take-in refused every module "builders disagree"). Until the assignments are settled (or where they cannot
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// be read) every entry is passed on, as before. Builders that run and report different versions still disagree: that
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// refusal is the guard of novox/hq ADR 0465, and it stays.
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type toolchainGate struct {
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mu sync.Mutex
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modules map[string]bool // the build modules whose toolchains pass the gate
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forward func(module, key string, value []byte, deleted bool) bool // answers whether it changed what it holds
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logf func(format string, a ...any)
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known bool // the assignments are settled
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standing map[string]time.Time // <node>.<module> with an open assignment -> since when it stands
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raw map[string]map[string][]byte // module -> toolchains key -> value, as the bucket holds it
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left map[string]string // <module>/<key> -> why it was said left out, so each reason is said once
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}
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func newToolchainGate(modules []string, forward func(module, key string, value []byte, deleted bool) bool, logf func(string, ...any)) *toolchainGate {
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g := &toolchainGate{modules: map[string]bool{}, forward: forward, logf: logf, standing: map[string]time.Time{},
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raw: map[string]map[string][]byte{}, left: map[string]string{}}
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for _, m := range modules {
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g.modules[m] = true
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}
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return g
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}
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// Toolchain takes one change of a build module's toolchains bucket in and answers whether what it passed on changed.
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func (g *toolchainGate) Toolchain(module, key string, value []byte, deleted bool) bool {
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g.mu.Lock()
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defer g.mu.Unlock()
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if g.raw[module] == nil {
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g.raw[module] = map[string][]byte{}
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}
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if deleted {
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delete(g.raw[module], key)
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} else {
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g.raw[module][key] = value
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}
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return g.pass(module, key)
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}
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// Assignment takes one change of the controller's assignments in (at is when the bus wrote that revision) and answers
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// whether what it passed on changed.
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func (g *toolchainGate) Assignment(key string, value []byte, deleted bool, at time.Time) bool {
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node, module, ok := strings.Cut(key, ".")
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if !ok || !g.modules[module] {
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return false
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}
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assigned, open := openAssignment(value)
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open = open && !deleted
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g.mu.Lock()
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defer g.mu.Unlock()
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was, stood := g.standing[key]
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since := assigned
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if since.IsZero() {
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// A value with no time of its own (an assignment a module pulled in) stands since the revision that opened it.
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since = at
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if stood {
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since = was
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}
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}
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if open == stood && (!open || since.Equal(was)) {
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return false
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}
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if open {
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g.standing[key] = since
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} else {
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delete(g.standing, key)
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}
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if !g.known {
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return false
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}
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changed := false
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for _, k := range slices.Sorted(maps.Keys(g.raw[module])) {
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if n, _, err := delivery.ParseToolchainKey(k); err == nil && n == node {
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changed = g.pass(module, k) || changed
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}
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}
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return changed
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}
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// Settled says the assignments are read: from now on only the reports of assigned nodes pass. It answers whether what it
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// passed on changed.
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func (g *toolchainGate) Settled() bool {
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g.mu.Lock()
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defer g.mu.Unlock()
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g.known = true
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changed := false
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for _, module := range slices.Sorted(maps.Keys(g.raw)) {
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for _, k := range slices.Sorted(maps.Keys(g.raw[module])) {
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changed = g.pass(module, k) || changed
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}
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}
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return changed
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}
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// pass hands one key on as it stands: its value when its node is assigned and wrote it since (or the assignments are not
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// known), deleted otherwise. The caller holds mu.
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func (g *toolchainGate) pass(module, key string) bool {
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value, held := g.raw[module][key]
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if !held {
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return g.forward(module, key, nil, true)
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}
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node, _, err := delivery.ParseToolchainKey(key)
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why := ""
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if err == nil && g.known {
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why = g.leftOut(module, node, value)
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}
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if why == "" {
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delete(g.left, module+"/"+key)
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return g.forward(module, key, value, false)
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}
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if g.left[module+"/"+key] != why {
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g.left[module+"/"+key] = why
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g.logf("%s.%s is left out of the agreed toolchain: %s (issue 1940)", delivery.ToolchainsBucket(module), key, why)
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}
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return g.forward(module, key, nil, true)
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}
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// leftOut is why a node's report is no builder's, or empty when it counts: its node has no open assignment of the module,
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// or the report was written before that assignment. A value that is no toolchain is passed on for its reader to refuse.
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// The caller holds mu.
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func (g *toolchainGate) leftOut(module, node string, value []byte) string {
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since, open := g.standing[node+"."+module]
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if !open {
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return fmt.Sprintf("%s has no assignment on %s, so it is no builder", module, node)
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}
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tc, err := delivery.DecodeToolchain(value)
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if err == nil && tc.At.Before(since) {
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return fmt.Sprintf("it was written at %s, before %s's assignment on %s at %s: it counts once %s writes it again",
|
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tc.At.UTC().Format(time.RFC3339), module, node, since.UTC().Format(time.RFC3339), node)
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}
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return ""
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}
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|
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// openAssignment is whether a value of the controller's assignments holds an assignment that stands (one that has not
|
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// ended and has no state: a pending one is not on the machine yet; mesh-controller internal/chain Assignment), and when
|
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// it was assigned, zero where the value does not say.
|
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func openAssignment(value []byte) (time.Time, bool) {
|
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var a struct {
|
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Assigned time.Time `json:"assigned"`
|
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Ended time.Time `json:"ended"`
|
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State string `json:"state"`
|
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}
|
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if json.Unmarshal(value, &a) != nil {
|
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return time.Time{}, false
|
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}
|
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return a.Assigned, a.Ended.IsZero() && a.State == ""
|
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}
|
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|
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// watchAssignments settles the controller's assignments into the gate, says them settled, and follows them; changed is
|
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// told whenever what the gate passes on changed. Where the bucket cannot be read (not there, or this module may not read
|
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// it) it says so and the gate passes every report on, as before; an error of the watch after that ends on the channel.
|
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func watchAssignments(ctx context.Context, js bucketOpener, gate *toolchainGate, changed func(context.Context), logger *log.Logger) (<-chan error, error) {
|
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errs := make(chan error, 1)
|
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kv, err := js.KeyValue(ctx, provider.AssignmentsBucket)
|
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if err != nil {
|
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// Not fatal: an indexer, builder or checker that stops for it stops every delivery (a grant comes with a delivery).
|
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logger.Printf("the bucket %s cannot be read, so every node's toolchain report counts, an unassigned build node's too (issue 1940): %v", provider.AssignmentsBucket, err)
|
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return errs, nil
|
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}
|
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each := func(e jetstream.KeyValueEntry) { gate.Assignment(e.Key(), e.Value(), !opOf(e), e.Created()) }
|
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w, err := settle(ctx, kv, each)
|
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if err != nil {
|
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// Not fatal either (issue 1945): a watch the bus refuses is the same missing grant as a refused read.
|
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logger.Printf("the bucket %s cannot be watched, so every node's toolchain report counts, an unassigned build node's too (issue 1940): %v", provider.AssignmentsBucket, err)
|
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return errs, nil
|
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}
|
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if gate.Settled() {
|
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changed(ctx)
|
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}
|
||||
go func() {
|
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errs <- follow(ctx, w, func(e jetstream.KeyValueEntry) {
|
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if gate.Assignment(e.Key(), e.Value(), !opOf(e), e.Created()) {
|
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changed(ctx)
|
||||
}
|
||||
})
|
||||
}()
|
||||
return errs, nil
|
||||
}
|
||||
@@ -1,228 +0,0 @@
|
||||
package main
|
||||
|
||||
// The same in mesh-delivery-indexer, mesh-delivery-builder and mesh-delivery-checker, as standing.go is (issue 1940).
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"context"
|
||||
"errors"
|
||||
"fmt"
|
||||
"log"
|
||||
"strings"
|
||||
"testing"
|
||||
"time"
|
||||
|
||||
"git.novox.be/novox/mesh-sdk/go/process"
|
||||
|
||||
"github.com/nats-io/nats.go/jetstream"
|
||||
|
||||
"git.novox.be/novox/mesh-sdk/go/delivery"
|
||||
"git.novox.be/novox/mesh-sdk/go/delivery/buildrun"
|
||||
)
|
||||
|
||||
func gateReport(t *testing.T, node, version string) (string, []byte) {
|
||||
t.Helper()
|
||||
key, err := delivery.ToolchainKey(node, "typescript")
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
value, err := delivery.EncodeToolchain(delivery.Toolchain{Language: "typescript", Version: version, Recipe: "f59571cf4be75adf", At: time.Unix(0, 0).UTC()})
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
return key, value
|
||||
}
|
||||
|
||||
func agreedOf(set *buildrun.ToolchainSet) (string, string) {
|
||||
tc, none := delivery.AgreedToolchain(set.Entries("typescript"))
|
||||
return tc.Version, none
|
||||
}
|
||||
|
||||
// The live case of issue 1940: mesh-build-node was unassigned from ace, whose report stayed at v26.12.0 while the
|
||||
// three nodes it runs on report v26.12.1. Without the assignments every report counts (and they disagree); with them
|
||||
// ace's is left out and the three agree; assigned to ace again, its report counts again and the guard refuses again.
|
||||
func TestAnUnassignedBuildNodesReportIsNoBuilder(t *testing.T) {
|
||||
set := &buildrun.ToolchainSet{}
|
||||
var said []string
|
||||
gate := newToolchainGate([]string{buildrun.GoBuildModule, buildrun.NodeBuildModule}, set.Put, func(f string, a ...any) { said = append(said, f) })
|
||||
for node, version := range map[string]string{"ace": "v26.12.0", "g14": "v26.12.1", "novox": "v26.12.1", "shanks": "v26.12.1"} {
|
||||
key, value := gateReport(t, node, version)
|
||||
gate.Toolchain(buildrun.NodeBuildModule, key, value, false)
|
||||
}
|
||||
if _, none := agreedOf(set); !strings.HasPrefix(none, "builders disagree") {
|
||||
t.Fatalf("before the assignments are read every report counts, so they disagree; got %q", none)
|
||||
}
|
||||
for _, node := range []string{"g14", "novox", "shanks"} {
|
||||
gate.Assignment(node+"."+buildrun.NodeBuildModule, []byte(`{"node":"`+node+`","module":"mesh-build-node"}`), false, time.Time{})
|
||||
}
|
||||
gate.Assignment("ace.mesh-build-node", []byte(`{"node":"ace","module":"mesh-build-node","ended":"2026-10-23T08:00:00Z"}`), false, time.Time{})
|
||||
gate.Assignment("ace.mesh-build-go", []byte(`{"node":"ace","module":"mesh-build-go"}`), false, time.Time{}) // another module's: no matter
|
||||
if !gate.Settled() {
|
||||
t.Fatal("settling the assignments left ace's report out, so what was passed on changed")
|
||||
}
|
||||
if v, none := agreedOf(set); v != "v26.12.1" || none != "" {
|
||||
t.Fatalf("the assigned nodes agree on v26.12.1; got %q, %q", v, none)
|
||||
}
|
||||
if len(said) != 1 {
|
||||
t.Fatalf("ace's report is said left out once; said %v", said)
|
||||
}
|
||||
// ace reports again while unassigned (an old value seen again): still left out.
|
||||
key, value := gateReport(t, "ace", "v26.12.0")
|
||||
if gate.Toolchain(buildrun.NodeBuildModule, key, value, false) {
|
||||
t.Fatal("an unassigned node's report changed what was passed on")
|
||||
}
|
||||
// Assigned to ace again: its report counts, and the builders really disagree: the guard stays.
|
||||
if !gate.Assignment("ace.mesh-build-node", []byte(`{"node":"ace","module":"mesh-build-node"}`), false, time.Time{}) {
|
||||
t.Fatal("assigning ace again passed nothing on")
|
||||
}
|
||||
if _, none := agreedOf(set); !strings.HasPrefix(none, "builders disagree: v26.12.0 recipe f59571cf4be75adf on ace") {
|
||||
t.Fatalf("builders that run different versions still disagree; got %q", none)
|
||||
}
|
||||
// The assignment's key deleted, or a pending one written: no assignment stands, and ace's report goes again.
|
||||
if !gate.Assignment("ace.mesh-build-node", []byte(`{"node":"ace","module":"mesh-build-node","state":"pending"}`), false, time.Time{}) {
|
||||
t.Fatal("a pending assignment is no assignment on the machine")
|
||||
}
|
||||
if v, none := agreedOf(set); v != "v26.12.1" || none != "" {
|
||||
t.Fatalf("got %q, %q", v, none)
|
||||
}
|
||||
gate.Assignment("ace.mesh-build-node", nil, true, time.Time{})
|
||||
if v, _ := agreedOf(set); v != "v26.12.1" {
|
||||
t.Fatalf("got %q", v)
|
||||
}
|
||||
// A report deleted from the bucket goes whether its node is assigned or not.
|
||||
key, _ = gateReport(t, "g14", "v26.12.1")
|
||||
if !gate.Toolchain(buildrun.NodeBuildModule, key, nil, true) {
|
||||
t.Fatal("deleting g14's report passed nothing on")
|
||||
}
|
||||
if n := len(set.Entries("typescript")); n != 2 {
|
||||
t.Fatalf("novox and shanks are left; got %d entries", n)
|
||||
}
|
||||
|
||||
// 1945 (a part exits at start for a bucket it works without): a bus that refuses the assignments' watch, or every
|
||||
// toolchains bucket, leaves the watches unstarted and the part running, said; a refused bucket it cannot work without
|
||||
// is an error naming the bucket and its grant.
|
||||
var logs bytes.Buffer
|
||||
logger := log.New(&logs, "", 0)
|
||||
refused := refusingBus{err: errors.New("nats: permissions violation for publish to $JS.API.CONSUMER.CREATE.KV_mesh-controller_assignments")}
|
||||
if _, err := watchAssignments(context.Background(), refused, newToolchainGate(nil, set.Put, t.Logf), func(context.Context) {}, logger); err != nil {
|
||||
t.Errorf("a refused watch of the assignments stopped the start: %v", err)
|
||||
}
|
||||
if err := newToolchainWatch(context.Background(), refusingBus{refuseOpen: true, err: refused.err}, set, func(context.Context) {}, logger).start(); err != nil {
|
||||
t.Errorf("a refused toolchains bucket stopped the start: %v", err)
|
||||
}
|
||||
if !strings.Contains(logs.String(), "cannot be watched") || !strings.Contains(logs.String(), "cannot be read") {
|
||||
t.Errorf("the refusals were not said: %q", logs.String())
|
||||
}
|
||||
if _, err := process.EssentialBucket(context.Background(), refusingBus{refuseOpen: true, err: refused.err}, "builder", "mesh-delivery-indexer_modules", "work"); err == nil ||
|
||||
!strings.Contains(err.Error(), "grant of mesh-delivery-indexer_modules") {
|
||||
t.Errorf("a refused bucket the part needs: %v, want an error naming its grant", err)
|
||||
}
|
||||
// The gate's source (the previews' trunk heads): refused at start, the builder goes on, and a candidate asking a trunk
|
||||
// head is told why and opens it again then.
|
||||
src := &trunkSource{ctx: context.Background(), js: refusingBus{refuseOpen: true, err: refused.err}, heads: &sourceHeads{}, errs: make(chan error, 1), logf: logger.Printf}
|
||||
src.start()
|
||||
if _, err := src.head(context.Background(), 7, "novox/mesh-catalog"); err == nil || !strings.Contains(err.Error(), delivery.SourceBucket) {
|
||||
t.Errorf("a trunk head with the source refused: %v, want why", err)
|
||||
}
|
||||
if src.opened {
|
||||
t.Error("a refused source counts as opened, so it is never opened again")
|
||||
}
|
||||
}
|
||||
|
||||
// refusingBus is a bus that refuses: every open (refuseOpen), or every watch of a bucket it opens, with err.
|
||||
type refusingBus struct {
|
||||
refuseOpen bool
|
||||
err error
|
||||
}
|
||||
|
||||
func (r refusingBus) KeyValue(context.Context, string) (jetstream.KeyValue, error) {
|
||||
if r.refuseOpen {
|
||||
return nil, r.err
|
||||
}
|
||||
return refusedWatch{err: r.err}, nil
|
||||
}
|
||||
|
||||
type refusedWatch struct {
|
||||
jetstream.KeyValue
|
||||
err error
|
||||
}
|
||||
|
||||
func (r refusedWatch) WatchAll(context.Context, ...jetstream.WatchOpt) (jetstream.KeyWatcher, error) {
|
||||
return nil, r.err
|
||||
}
|
||||
func (r refusedWatch) Watch(context.Context, string, ...jetstream.WatchOpt) (jetstream.KeyWatcher, error) {
|
||||
return nil, r.err
|
||||
}
|
||||
|
||||
// A build node's report counts from the first one it writes since its assignment: a newly assigned node that has not
|
||||
// reported changes nothing, and the report an earlier run left on the bus (issue 1940, 2026-10-25 20:56: ace.typescript
|
||||
// v26.12.0 of 2026-10-23 06:29, mesh-build-node assigned to ace again at 20:56:45) is left out, said once, until the node
|
||||
// writes it again. An assignment whose value names no time stands since the revision that opened it.
|
||||
func TestANewlyAssignedNodeCountsFromItsReport(t *testing.T) {
|
||||
left := time.Date(2026, 10, 23, 6, 29, 18, 0, time.UTC) // ace's report from its earlier run
|
||||
assigned := time.Date(2026, 10, 25, 19, 56, 45, 0, time.UTC) // mesh-build-node assigned to ace again
|
||||
report := func(t *testing.T, node, version string, at time.Time) (string, []byte) {
|
||||
key, _ := gateReport(t, node, version)
|
||||
value, err := delivery.EncodeToolchain(delivery.Toolchain{Language: "typescript", Version: version, Recipe: "f59571cf4be75adf", At: at})
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
return key, value
|
||||
}
|
||||
for _, c := range []struct {
|
||||
name string
|
||||
assignment string // ace's assignment value
|
||||
revision time.Time // when the bus wrote it
|
||||
at time.Time // when ace wrote its report
|
||||
counts bool
|
||||
}{
|
||||
{"no report yet, then one", `{}`, time.Time{}, time.Now(), true},
|
||||
{"a report left before the assignment", `{"node":"ace","module":"mesh-build-node","assigned":"2026-10-25T19:56:45Z"}`, assigned, left, false},
|
||||
{"a report left before a value with no time", `{"node":"ace","module":"mesh-build-node"}`, assigned, left, false},
|
||||
{"a report written since the assignment", `{"node":"ace","module":"mesh-build-node","assigned":"2026-10-25T19:56:45Z"}`, assigned, assigned.Add(30 * time.Second), true},
|
||||
} {
|
||||
t.Run(c.name, func(t *testing.T) {
|
||||
set := &buildrun.ToolchainSet{}
|
||||
var said []string
|
||||
gate := newToolchainGate([]string{buildrun.NodeBuildModule}, set.Put, func(f string, a ...any) { said = append(said, fmt.Sprintf(f, a...)) })
|
||||
for _, node := range []string{"g14", "novox", "shanks"} {
|
||||
gate.Assignment(node+".mesh-build-node", []byte(`{}`), false, time.Time{})
|
||||
key, value := gateReport(t, node, "v26.12.1")
|
||||
gate.Toolchain(buildrun.NodeBuildModule, key, value, false)
|
||||
}
|
||||
gate.Settled()
|
||||
if gate.Assignment("ace.mesh-build-node", []byte(c.assignment), false, c.revision) {
|
||||
t.Fatal("an assignment with no report passed something on")
|
||||
}
|
||||
key, value := report(t, "ace", "v26.12.0", c.at)
|
||||
if got := gate.Toolchain(buildrun.NodeBuildModule, key, value, false); got != c.counts {
|
||||
t.Fatalf("ace's report passed on: %v, want %v", got, c.counts)
|
||||
}
|
||||
// A rewrite of the assignment that does not move it changes nothing, and nothing is said again.
|
||||
if gate.Assignment("ace.mesh-build-node", []byte(c.assignment), false, c.revision.Add(time.Minute)) {
|
||||
t.Fatal("the same assignment written again changed what was passed on")
|
||||
}
|
||||
v, none := agreedOf(set)
|
||||
if c.counts {
|
||||
if !strings.HasPrefix(none, "builders disagree: v26.12.0 recipe f59571cf4be75adf on ace") {
|
||||
t.Fatalf("ace's own report counts and disagrees; got %q, %q", v, none)
|
||||
}
|
||||
return
|
||||
}
|
||||
if v != "v26.12.1" || none != "" {
|
||||
t.Fatalf("ace's left report is no builder's, so g14, novox and shanks agree; got %q, %q", v, none)
|
||||
}
|
||||
if len(said) != 1 || !strings.Contains(said[0], "before mesh-build-node's assignment on ace at 2026-10-25T19:56:45Z") {
|
||||
t.Fatalf("said %q, want once why ace's report is left out", said)
|
||||
}
|
||||
// ace writes its report again since it was assigned: it counts.
|
||||
key, value = report(t, "ace", "v26.12.1", assigned.Add(time.Minute))
|
||||
if !gate.Toolchain(buildrun.NodeBuildModule, key, value, false) {
|
||||
t.Fatal("ace's new report was not passed on")
|
||||
}
|
||||
if n := len(set.Entries("typescript")); n != 4 {
|
||||
t.Fatalf("four builders report; got %d", n)
|
||||
}
|
||||
})
|
||||
}
|
||||
}
|
||||
@@ -92,8 +92,8 @@ func TestManifestDeclarations(t *testing.T) { // 1607/AC1
|
||||
}
|
||||
// 1887/A4c: the builder chooses no node, so it reads neither presence nor have, invokes no build module's tool and
|
||||
// holds no capacity; it puts asks on the three build seats and reads their steps (ADR 0525 §1, §4, §5).
|
||||
if want := []string{"mesh-build-go.steps", "mesh-build-go.toolchains", "mesh-build-image.steps", "mesh-build-node.steps", "mesh-build-node.toolchains", "mesh-controller.assignments",
|
||||
"mesh-delivery-gate.source", "mesh-delivery-indexer.candidates", "mesh-delivery-indexer.manifests", "mesh-delivery-indexer.modules"}; !reflect.DeepEqual(sorted(m.Reads), want) {
|
||||
if want := []string{"mesh-build-go.steps", "mesh-build-go.toolchains", "mesh-build-image.steps", "mesh-build-node.steps", "mesh-build-node.toolchains",
|
||||
"mesh-delivery-gate.source", "mesh-delivery-indexer.candidates", "mesh-delivery-indexer.manifests", "mesh-delivery-indexer.modules", "mesh-delivery-indexer.placement"}; !reflect.DeepEqual(sorted(m.Reads), want) {
|
||||
t.Errorf("reads = %v, want %v", m.Reads, want)
|
||||
}
|
||||
if want := []string{"node-build-go", "node-build-image", "node-build-node"}; !reflect.DeepEqual(sorted(m.Uses), want) {
|
||||
|
||||
@@ -32,11 +32,11 @@
|
||||
"mesh-build-image.steps",
|
||||
"mesh-build-node.steps",
|
||||
"mesh-build-node.toolchains",
|
||||
"mesh-controller.assignments",
|
||||
"mesh-delivery-gate.source",
|
||||
"mesh-delivery-indexer.candidates",
|
||||
"mesh-delivery-indexer.manifests",
|
||||
"mesh-delivery-indexer.modules"
|
||||
"mesh-delivery-indexer.modules",
|
||||
"mesh-delivery-indexer.placement"
|
||||
],
|
||||
"uses": [
|
||||
"node-build-go",
|
||||
|
||||
@@ -208,11 +208,11 @@ func run(ctx context.Context, getenv func(string) string, logOut io.Writer) erro
|
||||
|
||||
// The toolchains first, so a check that starts from the first candidate finds the nodes.
|
||||
watch := newToolchainWatch(ctx, js, tools, ch.NodesChanged, logger)
|
||||
// Only the toolchain reports of nodes the build module is assigned to count (issue 1940): the controller's
|
||||
// assignments are settled first, so the toolchains settle through the gate already knowing them.
|
||||
gate := newToolchainGate([]string{buildrun.GoBuildModule, buildrun.NodeBuildModule}, tools.Put, logger.Printf)
|
||||
// Only the toolchain reports of nodes the catalogue places the build module on count (issue 1940, ADR 0549 §3): the
|
||||
// placement is settled first, so the toolchains settle through the gate already knowing it.
|
||||
gate := buildrun.NewToolchainGate([]string{buildrun.GoBuildModule, buildrun.NodeBuildModule}, tools.Put, logger.Printf)
|
||||
watch.put = gate.Toolchain
|
||||
assignErrs, err := watchAssignments(ctx, js, gate, ch.NodesChanged, logger)
|
||||
placementErrs, err := buildrun.FollowPlacement(ctx, js, gate, ch.NodesChanged, logger.Printf)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
@@ -359,7 +359,7 @@ func run(ctx context.Context, getenv func(string) string, logOut io.Writer) erro
|
||||
return nil
|
||||
case err := <-errs:
|
||||
return err
|
||||
case err := <-assignErrs:
|
||||
case err := <-placementErrs:
|
||||
return err
|
||||
case err := <-watch.errs:
|
||||
return err
|
||||
|
||||
@@ -0,0 +1,62 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"context"
|
||||
"errors"
|
||||
"log"
|
||||
"strings"
|
||||
"testing"
|
||||
|
||||
"git.novox.be/novox/mesh-sdk/go/process"
|
||||
|
||||
"github.com/nats-io/nats.go/jetstream"
|
||||
|
||||
"git.novox.be/novox/mesh-sdk/go/delivery/buildrun"
|
||||
)
|
||||
|
||||
// 1945 (a part exits at start for a bucket it works without): a bus that refuses every toolchains bucket leaves the
|
||||
// watch unstarted and the part running, said; a refused bucket it cannot work without is an error naming the bucket and
|
||||
// its grant. The gate over the catalogue's placement, and its refusal, are mesh-sdk's (buildrun.ToolchainGate,
|
||||
// issue 774).
|
||||
func TestARefusedBucketIsSaidAndThePartGoesOn(t *testing.T) {
|
||||
set := &buildrun.ToolchainSet{}
|
||||
var logs bytes.Buffer
|
||||
logger := log.New(&logs, "", 0)
|
||||
refused := refusingBus{err: errors.New("nats: permissions violation for publish to $JS.API.CONSUMER.CREATE.KV_mesh-build-node_toolchains")}
|
||||
if err := newToolchainWatch(context.Background(), refusingBus{refuseOpen: true, err: refused.err}, set, func(context.Context) {}, logger).start(); err != nil {
|
||||
t.Errorf("a refused toolchains bucket stopped the start: %v", err)
|
||||
}
|
||||
if !strings.Contains(logs.String(), "cannot be read") {
|
||||
t.Errorf("the refusals were not said: %q", logs.String())
|
||||
}
|
||||
if _, err := process.EssentialBucket(context.Background(), refusingBus{refuseOpen: true, err: refused.err}, "checker", "mesh-delivery-indexer_modules", "work"); err == nil ||
|
||||
!strings.Contains(err.Error(), "grant of mesh-delivery-indexer_modules") {
|
||||
t.Errorf("a refused bucket the part needs: %v, want an error naming its grant", err)
|
||||
}
|
||||
}
|
||||
|
||||
// refusingBus is a bus that refuses: every open (refuseOpen), or every watch of a bucket it opens, with err.
|
||||
type refusingBus struct {
|
||||
refuseOpen bool
|
||||
err error
|
||||
}
|
||||
|
||||
func (r refusingBus) KeyValue(context.Context, string) (jetstream.KeyValue, error) {
|
||||
if r.refuseOpen {
|
||||
return nil, r.err
|
||||
}
|
||||
return refusedWatch{err: r.err}, nil
|
||||
}
|
||||
|
||||
type refusedWatch struct {
|
||||
jetstream.KeyValue
|
||||
err error
|
||||
}
|
||||
|
||||
func (r refusedWatch) WatchAll(context.Context, ...jetstream.WatchOpt) (jetstream.KeyWatcher, error) {
|
||||
return nil, r.err
|
||||
}
|
||||
func (r refusedWatch) Watch(context.Context, string, ...jetstream.WatchOpt) (jetstream.KeyWatcher, error) {
|
||||
return nil, r.err
|
||||
}
|
||||
@@ -1,211 +0,0 @@
|
||||
package main
|
||||
|
||||
// This file is the same in mesh-delivery-indexer, mesh-delivery-builder and mesh-delivery-checker (issue 1940): it moves
|
||||
// to mesh-sdk go/delivery/buildrun once mesh-sdk can be delivered again, since a change of mesh-sdk waits on the very
|
||||
// toolchain agreement this file repairs.
|
||||
|
||||
import (
|
||||
"context"
|
||||
"encoding/json"
|
||||
"fmt"
|
||||
"log"
|
||||
"maps"
|
||||
"slices"
|
||||
"strings"
|
||||
"sync"
|
||||
"time"
|
||||
|
||||
"github.com/nats-io/nats.go/jetstream"
|
||||
|
||||
"git.novox.be/novox/mesh-sdk/go/delivery"
|
||||
"git.novox.be/novox/mesh-sdk/go/provider"
|
||||
)
|
||||
|
||||
// A build module writes <node>.<language> of its toolchains state on every node it runs on, and nothing deletes the key
|
||||
// when the module is unassigned from a node: the controller writes no module's state, and the module is gone. A report of
|
||||
// a node the build module no longer runs on is therefore not a builder (issue 1940: mesh-build-node unassigned from ace
|
||||
// on 2026-10-23 left ace.typescript at v26.12.0, and every Node fingerprint said "builders disagree").
|
||||
//
|
||||
// toolchainGate stands between the toolchains buckets and what takes their entries in (the indexer's PutToolchain, a
|
||||
// buildrun.ToolchainSet): an entry is passed on only while the controller's assignments (mesh-controller_assignments,
|
||||
// key <node>.<module>) hold an open assignment of its build module on its node, and only once it was written since that
|
||||
// assignment; it is passed on as deleted otherwise, said once, and passed on when its node writes it again. A report
|
||||
// written before the assignment is the one an earlier run of the module left (issue 1940, 2026-10-25 20:56: mesh-build-node
|
||||
// assigned to ace again brought ace.typescript v26.12.0 of 2026-10-23 back into the agreement, before the module ran
|
||||
// there, and the controller's take-in refused every module "builders disagree"). Until the assignments are settled (or where they cannot
|
||||
// be read) every entry is passed on, as before. Builders that run and report different versions still disagree: that
|
||||
// refusal is the guard of novox/hq ADR 0465, and it stays.
|
||||
type toolchainGate struct {
|
||||
mu sync.Mutex
|
||||
modules map[string]bool // the build modules whose toolchains pass the gate
|
||||
forward func(module, key string, value []byte, deleted bool) bool // answers whether it changed what it holds
|
||||
logf func(format string, a ...any)
|
||||
known bool // the assignments are settled
|
||||
standing map[string]time.Time // <node>.<module> with an open assignment -> since when it stands
|
||||
raw map[string]map[string][]byte // module -> toolchains key -> value, as the bucket holds it
|
||||
left map[string]string // <module>/<key> -> why it was said left out, so each reason is said once
|
||||
}
|
||||
|
||||
func newToolchainGate(modules []string, forward func(module, key string, value []byte, deleted bool) bool, logf func(string, ...any)) *toolchainGate {
|
||||
g := &toolchainGate{modules: map[string]bool{}, forward: forward, logf: logf, standing: map[string]time.Time{},
|
||||
raw: map[string]map[string][]byte{}, left: map[string]string{}}
|
||||
for _, m := range modules {
|
||||
g.modules[m] = true
|
||||
}
|
||||
return g
|
||||
}
|
||||
|
||||
// Toolchain takes one change of a build module's toolchains bucket in and answers whether what it passed on changed.
|
||||
func (g *toolchainGate) Toolchain(module, key string, value []byte, deleted bool) bool {
|
||||
g.mu.Lock()
|
||||
defer g.mu.Unlock()
|
||||
if g.raw[module] == nil {
|
||||
g.raw[module] = map[string][]byte{}
|
||||
}
|
||||
if deleted {
|
||||
delete(g.raw[module], key)
|
||||
} else {
|
||||
g.raw[module][key] = value
|
||||
}
|
||||
return g.pass(module, key)
|
||||
}
|
||||
|
||||
// Assignment takes one change of the controller's assignments in (at is when the bus wrote that revision) and answers
|
||||
// whether what it passed on changed.
|
||||
func (g *toolchainGate) Assignment(key string, value []byte, deleted bool, at time.Time) bool {
|
||||
node, module, ok := strings.Cut(key, ".")
|
||||
if !ok || !g.modules[module] {
|
||||
return false
|
||||
}
|
||||
assigned, open := openAssignment(value)
|
||||
open = open && !deleted
|
||||
g.mu.Lock()
|
||||
defer g.mu.Unlock()
|
||||
was, stood := g.standing[key]
|
||||
since := assigned
|
||||
if since.IsZero() {
|
||||
// A value with no time of its own (an assignment a module pulled in) stands since the revision that opened it.
|
||||
since = at
|
||||
if stood {
|
||||
since = was
|
||||
}
|
||||
}
|
||||
if open == stood && (!open || since.Equal(was)) {
|
||||
return false
|
||||
}
|
||||
if open {
|
||||
g.standing[key] = since
|
||||
} else {
|
||||
delete(g.standing, key)
|
||||
}
|
||||
if !g.known {
|
||||
return false
|
||||
}
|
||||
changed := false
|
||||
for _, k := range slices.Sorted(maps.Keys(g.raw[module])) {
|
||||
if n, _, err := delivery.ParseToolchainKey(k); err == nil && n == node {
|
||||
changed = g.pass(module, k) || changed
|
||||
}
|
||||
}
|
||||
return changed
|
||||
}
|
||||
|
||||
// Settled says the assignments are read: from now on only the reports of assigned nodes pass. It answers whether what it
|
||||
// passed on changed.
|
||||
func (g *toolchainGate) Settled() bool {
|
||||
g.mu.Lock()
|
||||
defer g.mu.Unlock()
|
||||
g.known = true
|
||||
changed := false
|
||||
for _, module := range slices.Sorted(maps.Keys(g.raw)) {
|
||||
for _, k := range slices.Sorted(maps.Keys(g.raw[module])) {
|
||||
changed = g.pass(module, k) || changed
|
||||
}
|
||||
}
|
||||
return changed
|
||||
}
|
||||
|
||||
// pass hands one key on as it stands: its value when its node is assigned and wrote it since (or the assignments are not
|
||||
// known), deleted otherwise. The caller holds mu.
|
||||
func (g *toolchainGate) pass(module, key string) bool {
|
||||
value, held := g.raw[module][key]
|
||||
if !held {
|
||||
return g.forward(module, key, nil, true)
|
||||
}
|
||||
node, _, err := delivery.ParseToolchainKey(key)
|
||||
why := ""
|
||||
if err == nil && g.known {
|
||||
why = g.leftOut(module, node, value)
|
||||
}
|
||||
if why == "" {
|
||||
delete(g.left, module+"/"+key)
|
||||
return g.forward(module, key, value, false)
|
||||
}
|
||||
if g.left[module+"/"+key] != why {
|
||||
g.left[module+"/"+key] = why
|
||||
g.logf("%s.%s is left out of the agreed toolchain: %s (issue 1940)", delivery.ToolchainsBucket(module), key, why)
|
||||
}
|
||||
return g.forward(module, key, nil, true)
|
||||
}
|
||||
|
||||
// leftOut is why a node's report is no builder's, or empty when it counts: its node has no open assignment of the module,
|
||||
// or the report was written before that assignment. A value that is no toolchain is passed on for its reader to refuse.
|
||||
// The caller holds mu.
|
||||
func (g *toolchainGate) leftOut(module, node string, value []byte) string {
|
||||
since, open := g.standing[node+"."+module]
|
||||
if !open {
|
||||
return fmt.Sprintf("%s has no assignment on %s, so it is no builder", module, node)
|
||||
}
|
||||
tc, err := delivery.DecodeToolchain(value)
|
||||
if err == nil && tc.At.Before(since) {
|
||||
return fmt.Sprintf("it was written at %s, before %s's assignment on %s at %s: it counts once %s writes it again",
|
||||
tc.At.UTC().Format(time.RFC3339), module, node, since.UTC().Format(time.RFC3339), node)
|
||||
}
|
||||
return ""
|
||||
}
|
||||
|
||||
// openAssignment is whether a value of the controller's assignments holds an assignment that stands (one that has not
|
||||
// ended and has no state: a pending one is not on the machine yet; mesh-controller internal/chain Assignment), and when
|
||||
// it was assigned, zero where the value does not say.
|
||||
func openAssignment(value []byte) (time.Time, bool) {
|
||||
var a struct {
|
||||
Assigned time.Time `json:"assigned"`
|
||||
Ended time.Time `json:"ended"`
|
||||
State string `json:"state"`
|
||||
}
|
||||
if json.Unmarshal(value, &a) != nil {
|
||||
return time.Time{}, false
|
||||
}
|
||||
return a.Assigned, a.Ended.IsZero() && a.State == ""
|
||||
}
|
||||
|
||||
// watchAssignments settles the controller's assignments into the gate, says them settled, and follows them; changed is
|
||||
// told whenever what the gate passes on changed. Where the bucket cannot be read (not there, or this module may not read
|
||||
// it) it says so and the gate passes every report on, as before; an error of the watch after that ends on the channel.
|
||||
func watchAssignments(ctx context.Context, js bucketOpener, gate *toolchainGate, changed func(context.Context), logger *log.Logger) (<-chan error, error) {
|
||||
errs := make(chan error, 1)
|
||||
kv, err := js.KeyValue(ctx, provider.AssignmentsBucket)
|
||||
if err != nil {
|
||||
// Not fatal: an indexer, builder or checker that stops for it stops every delivery (a grant comes with a delivery).
|
||||
logger.Printf("the bucket %s cannot be read, so every node's toolchain report counts, an unassigned build node's too (issue 1940): %v", provider.AssignmentsBucket, err)
|
||||
return errs, nil
|
||||
}
|
||||
each := func(e jetstream.KeyValueEntry) { gate.Assignment(e.Key(), e.Value(), !opOf(e), e.Created()) }
|
||||
w, err := settle(ctx, kv, each)
|
||||
if err != nil {
|
||||
// Not fatal either (issue 1945): a watch the bus refuses is the same missing grant as a refused read.
|
||||
logger.Printf("the bucket %s cannot be watched, so every node's toolchain report counts, an unassigned build node's too (issue 1940): %v", provider.AssignmentsBucket, err)
|
||||
return errs, nil
|
||||
}
|
||||
if gate.Settled() {
|
||||
changed(ctx)
|
||||
}
|
||||
go func() {
|
||||
errs <- follow(ctx, w, func(e jetstream.KeyValueEntry) {
|
||||
if gate.Assignment(e.Key(), e.Value(), !opOf(e), e.Created()) {
|
||||
changed(ctx)
|
||||
}
|
||||
})
|
||||
}()
|
||||
return errs, nil
|
||||
}
|
||||
@@ -1,218 +0,0 @@
|
||||
package main
|
||||
|
||||
// The same in mesh-delivery-indexer, mesh-delivery-builder and mesh-delivery-checker, as standing.go is (issue 1940).
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"context"
|
||||
"errors"
|
||||
"fmt"
|
||||
"log"
|
||||
"strings"
|
||||
"testing"
|
||||
"time"
|
||||
|
||||
"git.novox.be/novox/mesh-sdk/go/process"
|
||||
|
||||
"github.com/nats-io/nats.go/jetstream"
|
||||
|
||||
"git.novox.be/novox/mesh-sdk/go/delivery"
|
||||
"git.novox.be/novox/mesh-sdk/go/delivery/buildrun"
|
||||
)
|
||||
|
||||
func gateReport(t *testing.T, node, version string) (string, []byte) {
|
||||
t.Helper()
|
||||
key, err := delivery.ToolchainKey(node, "typescript")
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
value, err := delivery.EncodeToolchain(delivery.Toolchain{Language: "typescript", Version: version, Recipe: "f59571cf4be75adf", At: time.Unix(0, 0).UTC()})
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
return key, value
|
||||
}
|
||||
|
||||
func agreedOf(set *buildrun.ToolchainSet) (string, string) {
|
||||
tc, none := delivery.AgreedToolchain(set.Entries("typescript"))
|
||||
return tc.Version, none
|
||||
}
|
||||
|
||||
// The live case of issue 1940: mesh-build-node was unassigned from ace, whose report stayed at v26.12.0 while the
|
||||
// three nodes it runs on report v26.12.1. Without the assignments every report counts (and they disagree); with them
|
||||
// ace's is left out and the three agree; assigned to ace again, its report counts again and the guard refuses again.
|
||||
func TestAnUnassignedBuildNodesReportIsNoBuilder(t *testing.T) {
|
||||
set := &buildrun.ToolchainSet{}
|
||||
var said []string
|
||||
gate := newToolchainGate([]string{buildrun.GoBuildModule, buildrun.NodeBuildModule}, set.Put, func(f string, a ...any) { said = append(said, f) })
|
||||
for node, version := range map[string]string{"ace": "v26.12.0", "g14": "v26.12.1", "novox": "v26.12.1", "shanks": "v26.12.1"} {
|
||||
key, value := gateReport(t, node, version)
|
||||
gate.Toolchain(buildrun.NodeBuildModule, key, value, false)
|
||||
}
|
||||
if _, none := agreedOf(set); !strings.HasPrefix(none, "builders disagree") {
|
||||
t.Fatalf("before the assignments are read every report counts, so they disagree; got %q", none)
|
||||
}
|
||||
for _, node := range []string{"g14", "novox", "shanks"} {
|
||||
gate.Assignment(node+"."+buildrun.NodeBuildModule, []byte(`{"node":"`+node+`","module":"mesh-build-node"}`), false, time.Time{})
|
||||
}
|
||||
gate.Assignment("ace.mesh-build-node", []byte(`{"node":"ace","module":"mesh-build-node","ended":"2026-10-23T08:00:00Z"}`), false, time.Time{})
|
||||
gate.Assignment("ace.mesh-build-go", []byte(`{"node":"ace","module":"mesh-build-go"}`), false, time.Time{}) // another module's: no matter
|
||||
if !gate.Settled() {
|
||||
t.Fatal("settling the assignments left ace's report out, so what was passed on changed")
|
||||
}
|
||||
if v, none := agreedOf(set); v != "v26.12.1" || none != "" {
|
||||
t.Fatalf("the assigned nodes agree on v26.12.1; got %q, %q", v, none)
|
||||
}
|
||||
if len(said) != 1 {
|
||||
t.Fatalf("ace's report is said left out once; said %v", said)
|
||||
}
|
||||
// ace reports again while unassigned (an old value seen again): still left out.
|
||||
key, value := gateReport(t, "ace", "v26.12.0")
|
||||
if gate.Toolchain(buildrun.NodeBuildModule, key, value, false) {
|
||||
t.Fatal("an unassigned node's report changed what was passed on")
|
||||
}
|
||||
// Assigned to ace again: its report counts, and the builders really disagree: the guard stays.
|
||||
if !gate.Assignment("ace.mesh-build-node", []byte(`{"node":"ace","module":"mesh-build-node"}`), false, time.Time{}) {
|
||||
t.Fatal("assigning ace again passed nothing on")
|
||||
}
|
||||
if _, none := agreedOf(set); !strings.HasPrefix(none, "builders disagree: v26.12.0 recipe f59571cf4be75adf on ace") {
|
||||
t.Fatalf("builders that run different versions still disagree; got %q", none)
|
||||
}
|
||||
// The assignment's key deleted, or a pending one written: no assignment stands, and ace's report goes again.
|
||||
if !gate.Assignment("ace.mesh-build-node", []byte(`{"node":"ace","module":"mesh-build-node","state":"pending"}`), false, time.Time{}) {
|
||||
t.Fatal("a pending assignment is no assignment on the machine")
|
||||
}
|
||||
if v, none := agreedOf(set); v != "v26.12.1" || none != "" {
|
||||
t.Fatalf("got %q, %q", v, none)
|
||||
}
|
||||
gate.Assignment("ace.mesh-build-node", nil, true, time.Time{})
|
||||
if v, _ := agreedOf(set); v != "v26.12.1" {
|
||||
t.Fatalf("got %q", v)
|
||||
}
|
||||
// A report deleted from the bucket goes whether its node is assigned or not.
|
||||
key, _ = gateReport(t, "g14", "v26.12.1")
|
||||
if !gate.Toolchain(buildrun.NodeBuildModule, key, nil, true) {
|
||||
t.Fatal("deleting g14's report passed nothing on")
|
||||
}
|
||||
if n := len(set.Entries("typescript")); n != 2 {
|
||||
t.Fatalf("novox and shanks are left; got %d entries", n)
|
||||
}
|
||||
|
||||
// 1945 (a part exits at start for a bucket it works without): a bus that refuses the assignments' watch, or every
|
||||
// toolchains bucket, leaves the watches unstarted and the part running, said; a refused bucket it cannot work without
|
||||
// is an error naming the bucket and its grant.
|
||||
var logs bytes.Buffer
|
||||
logger := log.New(&logs, "", 0)
|
||||
refused := refusingBus{err: errors.New("nats: permissions violation for publish to $JS.API.CONSUMER.CREATE.KV_mesh-controller_assignments")}
|
||||
if _, err := watchAssignments(context.Background(), refused, newToolchainGate(nil, set.Put, t.Logf), func(context.Context) {}, logger); err != nil {
|
||||
t.Errorf("a refused watch of the assignments stopped the start: %v", err)
|
||||
}
|
||||
if err := newToolchainWatch(context.Background(), refusingBus{refuseOpen: true, err: refused.err}, set, func(context.Context) {}, logger).start(); err != nil {
|
||||
t.Errorf("a refused toolchains bucket stopped the start: %v", err)
|
||||
}
|
||||
if !strings.Contains(logs.String(), "cannot be watched") || !strings.Contains(logs.String(), "cannot be read") {
|
||||
t.Errorf("the refusals were not said: %q", logs.String())
|
||||
}
|
||||
if _, err := process.EssentialBucket(context.Background(), refusingBus{refuseOpen: true, err: refused.err}, "checker", "mesh-delivery-indexer_modules", "work"); err == nil ||
|
||||
!strings.Contains(err.Error(), "grant of mesh-delivery-indexer_modules") {
|
||||
t.Errorf("a refused bucket the part needs: %v, want an error naming its grant", err)
|
||||
}
|
||||
}
|
||||
|
||||
// refusingBus is a bus that refuses: every open (refuseOpen), or every watch of a bucket it opens, with err.
|
||||
type refusingBus struct {
|
||||
refuseOpen bool
|
||||
err error
|
||||
}
|
||||
|
||||
func (r refusingBus) KeyValue(context.Context, string) (jetstream.KeyValue, error) {
|
||||
if r.refuseOpen {
|
||||
return nil, r.err
|
||||
}
|
||||
return refusedWatch{err: r.err}, nil
|
||||
}
|
||||
|
||||
type refusedWatch struct {
|
||||
jetstream.KeyValue
|
||||
err error
|
||||
}
|
||||
|
||||
func (r refusedWatch) WatchAll(context.Context, ...jetstream.WatchOpt) (jetstream.KeyWatcher, error) {
|
||||
return nil, r.err
|
||||
}
|
||||
func (r refusedWatch) Watch(context.Context, string, ...jetstream.WatchOpt) (jetstream.KeyWatcher, error) {
|
||||
return nil, r.err
|
||||
}
|
||||
|
||||
// A build node's report counts from the first one it writes since its assignment: a newly assigned node that has not
|
||||
// reported changes nothing, and the report an earlier run left on the bus (issue 1940, 2026-10-25 20:56: ace.typescript
|
||||
// v26.12.0 of 2026-10-23 06:29, mesh-build-node assigned to ace again at 20:56:45) is left out, said once, until the node
|
||||
// writes it again. An assignment whose value names no time stands since the revision that opened it.
|
||||
func TestANewlyAssignedNodeCountsFromItsReport(t *testing.T) {
|
||||
left := time.Date(2026, 10, 23, 6, 29, 18, 0, time.UTC) // ace's report from its earlier run
|
||||
assigned := time.Date(2026, 10, 25, 19, 56, 45, 0, time.UTC) // mesh-build-node assigned to ace again
|
||||
report := func(t *testing.T, node, version string, at time.Time) (string, []byte) {
|
||||
key, _ := gateReport(t, node, version)
|
||||
value, err := delivery.EncodeToolchain(delivery.Toolchain{Language: "typescript", Version: version, Recipe: "f59571cf4be75adf", At: at})
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
return key, value
|
||||
}
|
||||
for _, c := range []struct {
|
||||
name string
|
||||
assignment string // ace's assignment value
|
||||
revision time.Time // when the bus wrote it
|
||||
at time.Time // when ace wrote its report
|
||||
counts bool
|
||||
}{
|
||||
{"no report yet, then one", `{}`, time.Time{}, time.Now(), true},
|
||||
{"a report left before the assignment", `{"node":"ace","module":"mesh-build-node","assigned":"2026-10-25T19:56:45Z"}`, assigned, left, false},
|
||||
{"a report left before a value with no time", `{"node":"ace","module":"mesh-build-node"}`, assigned, left, false},
|
||||
{"a report written since the assignment", `{"node":"ace","module":"mesh-build-node","assigned":"2026-10-25T19:56:45Z"}`, assigned, assigned.Add(30 * time.Second), true},
|
||||
} {
|
||||
t.Run(c.name, func(t *testing.T) {
|
||||
set := &buildrun.ToolchainSet{}
|
||||
var said []string
|
||||
gate := newToolchainGate([]string{buildrun.NodeBuildModule}, set.Put, func(f string, a ...any) { said = append(said, fmt.Sprintf(f, a...)) })
|
||||
for _, node := range []string{"g14", "novox", "shanks"} {
|
||||
gate.Assignment(node+".mesh-build-node", []byte(`{}`), false, time.Time{})
|
||||
key, value := gateReport(t, node, "v26.12.1")
|
||||
gate.Toolchain(buildrun.NodeBuildModule, key, value, false)
|
||||
}
|
||||
gate.Settled()
|
||||
if gate.Assignment("ace.mesh-build-node", []byte(c.assignment), false, c.revision) {
|
||||
t.Fatal("an assignment with no report passed something on")
|
||||
}
|
||||
key, value := report(t, "ace", "v26.12.0", c.at)
|
||||
if got := gate.Toolchain(buildrun.NodeBuildModule, key, value, false); got != c.counts {
|
||||
t.Fatalf("ace's report passed on: %v, want %v", got, c.counts)
|
||||
}
|
||||
// A rewrite of the assignment that does not move it changes nothing, and nothing is said again.
|
||||
if gate.Assignment("ace.mesh-build-node", []byte(c.assignment), false, c.revision.Add(time.Minute)) {
|
||||
t.Fatal("the same assignment written again changed what was passed on")
|
||||
}
|
||||
v, none := agreedOf(set)
|
||||
if c.counts {
|
||||
if !strings.HasPrefix(none, "builders disagree: v26.12.0 recipe f59571cf4be75adf on ace") {
|
||||
t.Fatalf("ace's own report counts and disagrees; got %q, %q", v, none)
|
||||
}
|
||||
return
|
||||
}
|
||||
if v != "v26.12.1" || none != "" {
|
||||
t.Fatalf("ace's left report is no builder's, so g14, novox and shanks agree; got %q, %q", v, none)
|
||||
}
|
||||
if len(said) != 1 || !strings.Contains(said[0], "before mesh-build-node's assignment on ace at 2026-10-25T19:56:45Z") {
|
||||
t.Fatalf("said %q, want once why ace's report is left out", said)
|
||||
}
|
||||
// ace writes its report again since it was assigned: it counts.
|
||||
key, value = report(t, "ace", "v26.12.1", assigned.Add(time.Minute))
|
||||
if !gate.Toolchain(buildrun.NodeBuildModule, key, value, false) {
|
||||
t.Fatal("ace's new report was not passed on")
|
||||
}
|
||||
if n := len(set.Entries("typescript")); n != 4 {
|
||||
t.Fatalf("four builders report; got %d", n)
|
||||
}
|
||||
})
|
||||
}
|
||||
}
|
||||
@@ -101,9 +101,9 @@ func TestManifestDeclarations(t *testing.T) { // 1678/AC1
|
||||
if want := []state{{Name: "asks", History: 1}, {Name: "hearing", History: 1}, {Name: "kept", History: 1}, {Name: "owed", History: 5}, {Name: "previews", History: 5}, {Name: "tries", History: 1}, {Name: "verdicts", History: 5}}; !reflect.DeepEqual(m.State, want) {
|
||||
t.Errorf("state = %+v, want %+v", m.State, want)
|
||||
}
|
||||
if want := []string{"mesh-build-go.steps", "mesh-build-go.toolchains", "mesh-build-node.steps", "mesh-build-node.toolchains", "mesh-controller.assignments",
|
||||
if want := []string{"mesh-build-go.steps", "mesh-build-go.toolchains", "mesh-build-node.steps", "mesh-build-node.toolchains",
|
||||
"mesh-delivery-assigner.compositions", "mesh-delivery-builder.builds", "mesh-delivery-gate.source", "mesh-delivery-gate.turns", "mesh-delivery-indexer.candidates",
|
||||
"mesh-delivery-indexer.manifests", "mesh-delivery-indexer.modules", "mesh-delivery-watchman.presence", "node-engine.have"}; !reflect.DeepEqual(sorted(m.Reads), want) {
|
||||
"mesh-delivery-indexer.manifests", "mesh-delivery-indexer.modules", "mesh-delivery-indexer.placement", "mesh-delivery-watchman.presence", "node-engine.have"}; !reflect.DeepEqual(sorted(m.Reads), want) {
|
||||
t.Errorf("reads = %v, want %v", m.Reads, want)
|
||||
}
|
||||
// 1887/A5b: the checker reads nothing of the controller's plans-building (ADR 0483 superseded by ADR 0525 §7), calls no
|
||||
|
||||
@@ -34,7 +34,6 @@
|
||||
"mesh-build-go.toolchains",
|
||||
"mesh-build-node.steps",
|
||||
"mesh-build-node.toolchains",
|
||||
"mesh-controller.assignments",
|
||||
"mesh-delivery-assigner.compositions",
|
||||
"mesh-delivery-builder.builds",
|
||||
"mesh-delivery-gate.source",
|
||||
@@ -42,6 +41,7 @@
|
||||
"mesh-delivery-indexer.candidates",
|
||||
"mesh-delivery-indexer.manifests",
|
||||
"mesh-delivery-indexer.modules",
|
||||
"mesh-delivery-indexer.placement",
|
||||
"mesh-delivery-watchman.presence",
|
||||
"node-engine.have"
|
||||
],
|
||||
|
||||
@@ -578,23 +578,39 @@ func TestIndexerJudgesAnUnreadableVerdictAgainAtStart(t *testing.T) { // 1923/AC
|
||||
}
|
||||
}
|
||||
|
||||
// TestIndexerCountsOnlyTheAssignedBuildNodesToolchains (issue 1940): the toolchains bucket holds the report of n2, where
|
||||
// mesh-build-go was unassigned (its assignment ended) at another version than n1's, as ace's v26.12.0 stayed beside the
|
||||
// v26.12.1 of the nodes mesh-build-node runs on. The indexer gives the merged module a fingerprint from n1's toolchain
|
||||
// alone; when the controller assigns mesh-build-go to n2 again, its report counts and the builders disagree (the guard
|
||||
// stays); when the assignment ends again, the fingerprint comes back. No restart, no timer: the assignments' watch.
|
||||
func TestIndexerCountsOnlyTheAssignedBuildNodesToolchains(t *testing.T) {
|
||||
// TestIndexerCountsOnlyThePlacedBuildNodesToolchains (issue 1940, issue 774): the toolchains bucket holds the report of
|
||||
// n2, where the catalogue no longer places mesh-build-go, at another version than n1's, as ace's v26.12.0 stayed beside
|
||||
// the v26.12.1 of the nodes mesh-build-node runs on. The indexer gives the merged module a fingerprint from n1's
|
||||
// toolchain alone; when the placement puts mesh-build-go on n2 again, its report written since counts and the builders
|
||||
// disagree (the guard stays); when it is taken off again, the fingerprint comes back. No restart, no timer: the
|
||||
// placement's watch (ADR 0549 §3), not the controller's assignments.
|
||||
func TestIndexerCountsOnlyThePlacedBuildNodesToolchains(t *testing.T) {
|
||||
manifest, err := os.ReadFile("../../internal/index/testdata/catalogue-a67f0196-avahi.module.json")
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
const goSum = "3b5028f0c1e9bde04dd766abd63eb5931bc516bae695cf46f00abcd8510b0381"
|
||||
var assignments jetstream.KeyValue
|
||||
var placement, toolchains jetstream.KeyValue
|
||||
place := func(ctx context.Context, t *testing.T, node string, modules ...string) {
|
||||
p := delivery.Placement{Node: node}
|
||||
for _, m := range modules {
|
||||
p.Modules = append(p.Modules, delivery.PlacedModule{Module: m})
|
||||
}
|
||||
key, _ := delivery.PlacementKey(node)
|
||||
value, err := delivery.EncodePlacement(p)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if _, err := placement.Put(ctx, key, value); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
js, ctx, _, modules := startIndexer(t, func(context.Context, jetstream.KeyValue) {}, func(ctx context.Context, js jetstream.JetStream) {
|
||||
kv, err := js.CreateKeyValue(ctx, jetstream.KeyValueConfig{Bucket: delivery.ToolchainsBucket("mesh-build-go"), History: 1})
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
toolchains = kv
|
||||
for node, version := range map[string]string{"n1": "go1.27.3", "n2": "go1.27.2"} {
|
||||
key, _ := delivery.ToolchainKey(node, "go")
|
||||
value, err := delivery.EncodeToolchain(delivery.Toolchain{Language: "go", Version: version, Recipe: "1", At: time.Now()})
|
||||
@@ -605,18 +621,12 @@ func TestIndexerCountsOnlyTheAssignedBuildNodesToolchains(t *testing.T) {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
// The controller's assignments mirror, in its layout (mesh-controller internal/chain Assignment).
|
||||
if assignments, err = js.CreateKeyValue(ctx, jetstream.KeyValueConfig{Bucket: "mesh-controller_assignments", History: 1}); err != nil {
|
||||
// The indexer's placement, as the catalogue's files put it there (ADR 0549 §2): n1 places mesh-build-go, n2 nothing.
|
||||
if placement, err = js.CreateKeyValue(ctx, jetstream.KeyValueConfig{Bucket: delivery.PlacementBucket, History: delivery.PlacementHistory}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
for key, value := range map[string]string{
|
||||
"n1.mesh-build-go": `{"node":"n1","module":"mesh-build-go","assigned":"2026-10-20T08:00:00Z"}`,
|
||||
"n2.mesh-build-go": `{"node":"n2","module":"mesh-build-go","assigned":"2026-10-20T08:00:00Z","ended":"2026-10-23T08:00:00Z"}`,
|
||||
} {
|
||||
if _, err := assignments.Put(ctx, key, []byte(value)); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
place(ctx, t, "n1", "mesh-build-go")
|
||||
place(ctx, t, "n2")
|
||||
})
|
||||
data, err := delivery.EncodeForge(delivery.Forge{Kind: delivery.ForgeMerged, Repository: "novox/mesh-catalog", Branch: "feat/x", Number: 302,
|
||||
Head: "0123456789abcdef0123456789abcdef01234567", Merge: "89abcdef0123456789abcdef0123456789abcdef", Root: "r0",
|
||||
@@ -647,16 +657,22 @@ func TestIndexerCountsOnlyTheAssignedBuildNodesToolchains(t *testing.T) {
|
||||
if !agreed(held) {
|
||||
t.Fatalf("within 5 s avahi has fp2 %q, none2 %q, toolchains %v: want a fingerprint of n1's go1.27.3 alone", held.FP2, held.None2, held.Toolchains)
|
||||
}
|
||||
if _, err := assignments.Put(ctx, "n2.mesh-build-go", []byte(`{"node":"n2","module":"mesh-build-go","assigned":"2026-10-24T08:00:00Z"}`)); err != nil {
|
||||
place(ctx, t, "n2", "mesh-build-go")
|
||||
key, _ := delivery.ToolchainKey("n2", "go")
|
||||
value, err := delivery.EncodeToolchain(delivery.Toolchain{Language: "go", Version: "go1.27.2", Recipe: "1", At: time.Now().Add(time.Second)})
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
// n2's report, written since its assignment, counts: the builders disagree. A fingerprint already computed is kept
|
||||
if _, err := toolchains.Put(ctx, key, value); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
// n2's report, written since its placement, counts: the builders disagree. A fingerprint already computed is kept
|
||||
// (issue 1940), and only a new one needs the agreement: a merge moving avahi gets none until they agree.
|
||||
time.Sleep(500 * time.Millisecond)
|
||||
if e, err := modules.Get(ctx, "avahi"); err != nil {
|
||||
t.Fatal(err)
|
||||
} else if m, err := delivery.DecodeModule(e.Value()); err != nil || m.FP2 != held.FP2 {
|
||||
t.Fatalf("after n2's assignment avahi has fp2 %q, none2 %q: want its fingerprint %q kept", m.FP2, m.None2, held.FP2)
|
||||
t.Fatalf("after n2's placement avahi has fp2 %q, none2 %q: want its fingerprint %q kept", m.FP2, m.None2, held.FP2)
|
||||
}
|
||||
moved := strings.Replace(string(data), `"newtree"`, `"movedtree"`, 1)
|
||||
if moved == string(data) {
|
||||
@@ -669,12 +685,10 @@ func TestIndexerCountsOnlyTheAssignedBuildNodesToolchains(t *testing.T) {
|
||||
return m.FP2 == "" && strings.HasPrefix(m.None2, "builders disagree: go1.27.2 recipe 1 on n2")
|
||||
}
|
||||
if m := read(disagree); !disagree(m) {
|
||||
t.Fatalf("within 5 s of a merge after n2's assignment avahi has fp2 %q, none2 %q: want the builders to disagree", m.FP2, m.None2)
|
||||
}
|
||||
if _, err := assignments.Put(ctx, "n2.mesh-build-go", []byte(`{"node":"n2","module":"mesh-build-go","ended":"2026-10-24T09:00:00Z"}`)); err != nil {
|
||||
t.Fatal(err)
|
||||
t.Fatalf("within 5 s of a merge after n2's placement avahi has fp2 %q, none2 %q: want the builders to disagree", m.FP2, m.None2)
|
||||
}
|
||||
place(ctx, t, "n2")
|
||||
if m := read(agreed); !agreed(m) {
|
||||
t.Fatalf("within 5 s of n2's unassignment avahi has fp2 %q, none2 %q", m.FP2, m.None2)
|
||||
t.Fatalf("within 5 s of n2's placement taken away avahi has fp2 %q, none2 %q", m.FP2, m.None2)
|
||||
}
|
||||
}
|
||||
|
||||
@@ -24,6 +24,7 @@ import (
|
||||
"github.com/nats-io/nats.go/jetstream"
|
||||
|
||||
"git.novox.be/novox/mesh-sdk/go/delivery"
|
||||
"git.novox.be/novox/mesh-sdk/go/delivery/buildrun"
|
||||
"git.novox.be/novox/mesh-sdk/go/process"
|
||||
|
||||
"mesh-delivery-indexer/internal/index"
|
||||
@@ -321,14 +322,14 @@ func run(ctx context.Context, getenv func(string) string, logOut io.Writer) erro
|
||||
go func() { sourceErrs <- follow(ctx, sw, each) }()
|
||||
}
|
||||
}
|
||||
// Only the toolchain reports of nodes the build module is assigned to count (issue 1940): the controller's
|
||||
// assignments are settled first, so the toolchains settle through the gate already knowing them.
|
||||
gate := newToolchainGate(sortedModules(), ix.PutToolchain, logger.Printf)
|
||||
assignErrs, err := watchAssignments(ctx, js, gate, func(ctx context.Context) {
|
||||
// Only the toolchain reports of nodes the catalogue places the build module on count (issue 1940, ADR 0549 §3): the
|
||||
// placement is settled first, so the toolchains settle through the gate already knowing it.
|
||||
gate := buildrun.NewToolchainGate(sortedModules(), ix.PutToolchain, logger.Printf)
|
||||
placementErrs, err := buildrun.FollowPlacement(ctx, js, gate, func(ctx context.Context) {
|
||||
if err := ix.Recompute(ctx); err != nil {
|
||||
logger.Printf("writing the modules again after an assignment of a build module changed: %v", err)
|
||||
logger.Printf("writing the modules again after the placement of a build module changed: %v", err)
|
||||
}
|
||||
}, logger)
|
||||
}, logger.Printf)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
@@ -442,7 +443,7 @@ func run(ctx context.Context, getenv func(string) string, logOut io.Writer) erro
|
||||
return err
|
||||
case err := <-sourceErrs:
|
||||
return err
|
||||
case err := <-assignErrs:
|
||||
case err := <-placementErrs:
|
||||
return err
|
||||
case err := <-tools.errs:
|
||||
return err
|
||||
|
||||
@@ -1,211 +0,0 @@
|
||||
package main
|
||||
|
||||
// This file is the same in mesh-delivery-indexer, mesh-delivery-builder and mesh-delivery-checker (issue 1940): it moves
|
||||
// to mesh-sdk go/delivery/buildrun once mesh-sdk can be delivered again, since a change of mesh-sdk waits on the very
|
||||
// toolchain agreement this file repairs.
|
||||
|
||||
import (
|
||||
"context"
|
||||
"encoding/json"
|
||||
"fmt"
|
||||
"log"
|
||||
"maps"
|
||||
"slices"
|
||||
"strings"
|
||||
"sync"
|
||||
"time"
|
||||
|
||||
"github.com/nats-io/nats.go/jetstream"
|
||||
|
||||
"git.novox.be/novox/mesh-sdk/go/delivery"
|
||||
"git.novox.be/novox/mesh-sdk/go/provider"
|
||||
)
|
||||
|
||||
// A build module writes <node>.<language> of its toolchains state on every node it runs on, and nothing deletes the key
|
||||
// when the module is unassigned from a node: the controller writes no module's state, and the module is gone. A report of
|
||||
// a node the build module no longer runs on is therefore not a builder (issue 1940: mesh-build-node unassigned from ace
|
||||
// on 2026-10-23 left ace.typescript at v26.12.0, and every Node fingerprint said "builders disagree").
|
||||
//
|
||||
// toolchainGate stands between the toolchains buckets and what takes their entries in (the indexer's PutToolchain, a
|
||||
// buildrun.ToolchainSet): an entry is passed on only while the controller's assignments (mesh-controller_assignments,
|
||||
// key <node>.<module>) hold an open assignment of its build module on its node, and only once it was written since that
|
||||
// assignment; it is passed on as deleted otherwise, said once, and passed on when its node writes it again. A report
|
||||
// written before the assignment is the one an earlier run of the module left (issue 1940, 2026-10-25 20:56: mesh-build-node
|
||||
// assigned to ace again brought ace.typescript v26.12.0 of 2026-10-23 back into the agreement, before the module ran
|
||||
// there, and the controller's take-in refused every module "builders disagree"). Until the assignments are settled (or where they cannot
|
||||
// be read) every entry is passed on, as before. Builders that run and report different versions still disagree: that
|
||||
// refusal is the guard of novox/hq ADR 0465, and it stays.
|
||||
type toolchainGate struct {
|
||||
mu sync.Mutex
|
||||
modules map[string]bool // the build modules whose toolchains pass the gate
|
||||
forward func(module, key string, value []byte, deleted bool) bool // answers whether it changed what it holds
|
||||
logf func(format string, a ...any)
|
||||
known bool // the assignments are settled
|
||||
standing map[string]time.Time // <node>.<module> with an open assignment -> since when it stands
|
||||
raw map[string]map[string][]byte // module -> toolchains key -> value, as the bucket holds it
|
||||
left map[string]string // <module>/<key> -> why it was said left out, so each reason is said once
|
||||
}
|
||||
|
||||
func newToolchainGate(modules []string, forward func(module, key string, value []byte, deleted bool) bool, logf func(string, ...any)) *toolchainGate {
|
||||
g := &toolchainGate{modules: map[string]bool{}, forward: forward, logf: logf, standing: map[string]time.Time{},
|
||||
raw: map[string]map[string][]byte{}, left: map[string]string{}}
|
||||
for _, m := range modules {
|
||||
g.modules[m] = true
|
||||
}
|
||||
return g
|
||||
}
|
||||
|
||||
// Toolchain takes one change of a build module's toolchains bucket in and answers whether what it passed on changed.
|
||||
func (g *toolchainGate) Toolchain(module, key string, value []byte, deleted bool) bool {
|
||||
g.mu.Lock()
|
||||
defer g.mu.Unlock()
|
||||
if g.raw[module] == nil {
|
||||
g.raw[module] = map[string][]byte{}
|
||||
}
|
||||
if deleted {
|
||||
delete(g.raw[module], key)
|
||||
} else {
|
||||
g.raw[module][key] = value
|
||||
}
|
||||
return g.pass(module, key)
|
||||
}
|
||||
|
||||
// Assignment takes one change of the controller's assignments in (at is when the bus wrote that revision) and answers
|
||||
// whether what it passed on changed.
|
||||
func (g *toolchainGate) Assignment(key string, value []byte, deleted bool, at time.Time) bool {
|
||||
node, module, ok := strings.Cut(key, ".")
|
||||
if !ok || !g.modules[module] {
|
||||
return false
|
||||
}
|
||||
assigned, open := openAssignment(value)
|
||||
open = open && !deleted
|
||||
g.mu.Lock()
|
||||
defer g.mu.Unlock()
|
||||
was, stood := g.standing[key]
|
||||
since := assigned
|
||||
if since.IsZero() {
|
||||
// A value with no time of its own (an assignment a module pulled in) stands since the revision that opened it.
|
||||
since = at
|
||||
if stood {
|
||||
since = was
|
||||
}
|
||||
}
|
||||
if open == stood && (!open || since.Equal(was)) {
|
||||
return false
|
||||
}
|
||||
if open {
|
||||
g.standing[key] = since
|
||||
} else {
|
||||
delete(g.standing, key)
|
||||
}
|
||||
if !g.known {
|
||||
return false
|
||||
}
|
||||
changed := false
|
||||
for _, k := range slices.Sorted(maps.Keys(g.raw[module])) {
|
||||
if n, _, err := delivery.ParseToolchainKey(k); err == nil && n == node {
|
||||
changed = g.pass(module, k) || changed
|
||||
}
|
||||
}
|
||||
return changed
|
||||
}
|
||||
|
||||
// Settled says the assignments are read: from now on only the reports of assigned nodes pass. It answers whether what it
|
||||
// passed on changed.
|
||||
func (g *toolchainGate) Settled() bool {
|
||||
g.mu.Lock()
|
||||
defer g.mu.Unlock()
|
||||
g.known = true
|
||||
changed := false
|
||||
for _, module := range slices.Sorted(maps.Keys(g.raw)) {
|
||||
for _, k := range slices.Sorted(maps.Keys(g.raw[module])) {
|
||||
changed = g.pass(module, k) || changed
|
||||
}
|
||||
}
|
||||
return changed
|
||||
}
|
||||
|
||||
// pass hands one key on as it stands: its value when its node is assigned and wrote it since (or the assignments are not
|
||||
// known), deleted otherwise. The caller holds mu.
|
||||
func (g *toolchainGate) pass(module, key string) bool {
|
||||
value, held := g.raw[module][key]
|
||||
if !held {
|
||||
return g.forward(module, key, nil, true)
|
||||
}
|
||||
node, _, err := delivery.ParseToolchainKey(key)
|
||||
why := ""
|
||||
if err == nil && g.known {
|
||||
why = g.leftOut(module, node, value)
|
||||
}
|
||||
if why == "" {
|
||||
delete(g.left, module+"/"+key)
|
||||
return g.forward(module, key, value, false)
|
||||
}
|
||||
if g.left[module+"/"+key] != why {
|
||||
g.left[module+"/"+key] = why
|
||||
g.logf("%s.%s is left out of the agreed toolchain: %s (issue 1940)", delivery.ToolchainsBucket(module), key, why)
|
||||
}
|
||||
return g.forward(module, key, nil, true)
|
||||
}
|
||||
|
||||
// leftOut is why a node's report is no builder's, or empty when it counts: its node has no open assignment of the module,
|
||||
// or the report was written before that assignment. A value that is no toolchain is passed on for its reader to refuse.
|
||||
// The caller holds mu.
|
||||
func (g *toolchainGate) leftOut(module, node string, value []byte) string {
|
||||
since, open := g.standing[node+"."+module]
|
||||
if !open {
|
||||
return fmt.Sprintf("%s has no assignment on %s, so it is no builder", module, node)
|
||||
}
|
||||
tc, err := delivery.DecodeToolchain(value)
|
||||
if err == nil && tc.At.Before(since) {
|
||||
return fmt.Sprintf("it was written at %s, before %s's assignment on %s at %s: it counts once %s writes it again",
|
||||
tc.At.UTC().Format(time.RFC3339), module, node, since.UTC().Format(time.RFC3339), node)
|
||||
}
|
||||
return ""
|
||||
}
|
||||
|
||||
// openAssignment is whether a value of the controller's assignments holds an assignment that stands (one that has not
|
||||
// ended and has no state: a pending one is not on the machine yet; mesh-controller internal/chain Assignment), and when
|
||||
// it was assigned, zero where the value does not say.
|
||||
func openAssignment(value []byte) (time.Time, bool) {
|
||||
var a struct {
|
||||
Assigned time.Time `json:"assigned"`
|
||||
Ended time.Time `json:"ended"`
|
||||
State string `json:"state"`
|
||||
}
|
||||
if json.Unmarshal(value, &a) != nil {
|
||||
return time.Time{}, false
|
||||
}
|
||||
return a.Assigned, a.Ended.IsZero() && a.State == ""
|
||||
}
|
||||
|
||||
// watchAssignments settles the controller's assignments into the gate, says them settled, and follows them; changed is
|
||||
// told whenever what the gate passes on changed. Where the bucket cannot be read (not there, or this module may not read
|
||||
// it) it says so and the gate passes every report on, as before; an error of the watch after that ends on the channel.
|
||||
func watchAssignments(ctx context.Context, js bucketOpener, gate *toolchainGate, changed func(context.Context), logger *log.Logger) (<-chan error, error) {
|
||||
errs := make(chan error, 1)
|
||||
kv, err := js.KeyValue(ctx, provider.AssignmentsBucket)
|
||||
if err != nil {
|
||||
// Not fatal: an indexer, builder or checker that stops for it stops every delivery (a grant comes with a delivery).
|
||||
logger.Printf("the bucket %s cannot be read, so every node's toolchain report counts, an unassigned build node's too (issue 1940): %v", provider.AssignmentsBucket, err)
|
||||
return errs, nil
|
||||
}
|
||||
each := func(e jetstream.KeyValueEntry) { gate.Assignment(e.Key(), e.Value(), !opOf(e), e.Created()) }
|
||||
w, err := settle(ctx, kv, each)
|
||||
if err != nil {
|
||||
// Not fatal either (issue 1945): a watch the bus refuses is the same missing grant as a refused read.
|
||||
logger.Printf("the bucket %s cannot be watched, so every node's toolchain report counts, an unassigned build node's too (issue 1940): %v", provider.AssignmentsBucket, err)
|
||||
return errs, nil
|
||||
}
|
||||
if gate.Settled() {
|
||||
changed(ctx)
|
||||
}
|
||||
go func() {
|
||||
errs <- follow(ctx, w, func(e jetstream.KeyValueEntry) {
|
||||
if gate.Assignment(e.Key(), e.Value(), !opOf(e), e.Created()) {
|
||||
changed(ctx)
|
||||
}
|
||||
})
|
||||
}()
|
||||
return errs, nil
|
||||
}
|
||||
@@ -1,165 +0,0 @@
|
||||
package main
|
||||
|
||||
// The same in mesh-delivery-indexer, mesh-delivery-builder and mesh-delivery-checker, as standing.go is (issue 1940).
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"strings"
|
||||
"testing"
|
||||
"time"
|
||||
|
||||
"git.novox.be/novox/mesh-sdk/go/delivery"
|
||||
"git.novox.be/novox/mesh-sdk/go/delivery/buildrun"
|
||||
)
|
||||
|
||||
func gateReport(t *testing.T, node, version string) (string, []byte) {
|
||||
t.Helper()
|
||||
key, err := delivery.ToolchainKey(node, "typescript")
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
value, err := delivery.EncodeToolchain(delivery.Toolchain{Language: "typescript", Version: version, Recipe: "f59571cf4be75adf", At: time.Unix(0, 0).UTC()})
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
return key, value
|
||||
}
|
||||
|
||||
func agreedOf(set *buildrun.ToolchainSet) (string, string) {
|
||||
tc, none := delivery.AgreedToolchain(set.Entries("typescript"))
|
||||
return tc.Version, none
|
||||
}
|
||||
|
||||
// The live case of issue 1940: mesh-build-node was unassigned from ace, whose report stayed at v26.12.0 while the
|
||||
// three nodes it runs on report v26.12.1. Without the assignments every report counts (and they disagree); with them
|
||||
// ace's is left out and the three agree; assigned to ace again, its report counts again and the guard refuses again.
|
||||
func TestAnUnassignedBuildNodesReportIsNoBuilder(t *testing.T) {
|
||||
set := &buildrun.ToolchainSet{}
|
||||
var said []string
|
||||
gate := newToolchainGate([]string{buildrun.GoBuildModule, buildrun.NodeBuildModule}, set.Put, func(f string, a ...any) { said = append(said, f) })
|
||||
for node, version := range map[string]string{"ace": "v26.12.0", "g14": "v26.12.1", "novox": "v26.12.1", "shanks": "v26.12.1"} {
|
||||
key, value := gateReport(t, node, version)
|
||||
gate.Toolchain(buildrun.NodeBuildModule, key, value, false)
|
||||
}
|
||||
if _, none := agreedOf(set); !strings.HasPrefix(none, "builders disagree") {
|
||||
t.Fatalf("before the assignments are read every report counts, so they disagree; got %q", none)
|
||||
}
|
||||
for _, node := range []string{"g14", "novox", "shanks"} {
|
||||
gate.Assignment(node+"."+buildrun.NodeBuildModule, []byte(`{"node":"`+node+`","module":"mesh-build-node"}`), false, time.Time{})
|
||||
}
|
||||
gate.Assignment("ace.mesh-build-node", []byte(`{"node":"ace","module":"mesh-build-node","ended":"2026-10-23T08:00:00Z"}`), false, time.Time{})
|
||||
gate.Assignment("ace.mesh-build-go", []byte(`{"node":"ace","module":"mesh-build-go"}`), false, time.Time{}) // another module's: no matter
|
||||
if !gate.Settled() {
|
||||
t.Fatal("settling the assignments left ace's report out, so what was passed on changed")
|
||||
}
|
||||
if v, none := agreedOf(set); v != "v26.12.1" || none != "" {
|
||||
t.Fatalf("the assigned nodes agree on v26.12.1; got %q, %q", v, none)
|
||||
}
|
||||
if len(said) != 1 {
|
||||
t.Fatalf("ace's report is said left out once; said %v", said)
|
||||
}
|
||||
// ace reports again while unassigned (an old value seen again): still left out.
|
||||
key, value := gateReport(t, "ace", "v26.12.0")
|
||||
if gate.Toolchain(buildrun.NodeBuildModule, key, value, false) {
|
||||
t.Fatal("an unassigned node's report changed what was passed on")
|
||||
}
|
||||
// Assigned to ace again: its report counts, and the builders really disagree: the guard stays.
|
||||
if !gate.Assignment("ace.mesh-build-node", []byte(`{"node":"ace","module":"mesh-build-node"}`), false, time.Time{}) {
|
||||
t.Fatal("assigning ace again passed nothing on")
|
||||
}
|
||||
if _, none := agreedOf(set); !strings.HasPrefix(none, "builders disagree: v26.12.0 recipe f59571cf4be75adf on ace") {
|
||||
t.Fatalf("builders that run different versions still disagree; got %q", none)
|
||||
}
|
||||
// The assignment's key deleted, or a pending one written: no assignment stands, and ace's report goes again.
|
||||
if !gate.Assignment("ace.mesh-build-node", []byte(`{"node":"ace","module":"mesh-build-node","state":"pending"}`), false, time.Time{}) {
|
||||
t.Fatal("a pending assignment is no assignment on the machine")
|
||||
}
|
||||
if v, none := agreedOf(set); v != "v26.12.1" || none != "" {
|
||||
t.Fatalf("got %q, %q", v, none)
|
||||
}
|
||||
gate.Assignment("ace.mesh-build-node", nil, true, time.Time{})
|
||||
if v, _ := agreedOf(set); v != "v26.12.1" {
|
||||
t.Fatalf("got %q", v)
|
||||
}
|
||||
// A report deleted from the bucket goes whether its node is assigned or not.
|
||||
key, _ = gateReport(t, "g14", "v26.12.1")
|
||||
if !gate.Toolchain(buildrun.NodeBuildModule, key, nil, true) {
|
||||
t.Fatal("deleting g14's report passed nothing on")
|
||||
}
|
||||
if n := len(set.Entries("typescript")); n != 2 {
|
||||
t.Fatalf("novox and shanks are left; got %d entries", n)
|
||||
}
|
||||
}
|
||||
|
||||
// A build node's report counts from the first one it writes since its assignment: a newly assigned node that has not
|
||||
// reported changes nothing, and the report an earlier run left on the bus (issue 1940, 2026-10-25 20:56: ace.typescript
|
||||
// v26.12.0 of 2026-10-23 06:29, mesh-build-node assigned to ace again at 20:56:45) is left out, said once, until the node
|
||||
// writes it again. An assignment whose value names no time stands since the revision that opened it.
|
||||
func TestANewlyAssignedNodeCountsFromItsReport(t *testing.T) {
|
||||
left := time.Date(2026, 10, 23, 6, 29, 18, 0, time.UTC) // ace's report from its earlier run
|
||||
assigned := time.Date(2026, 10, 25, 19, 56, 45, 0, time.UTC) // mesh-build-node assigned to ace again
|
||||
report := func(t *testing.T, node, version string, at time.Time) (string, []byte) {
|
||||
key, _ := gateReport(t, node, version)
|
||||
value, err := delivery.EncodeToolchain(delivery.Toolchain{Language: "typescript", Version: version, Recipe: "f59571cf4be75adf", At: at})
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
return key, value
|
||||
}
|
||||
for _, c := range []struct {
|
||||
name string
|
||||
assignment string // ace's assignment value
|
||||
revision time.Time // when the bus wrote it
|
||||
at time.Time // when ace wrote its report
|
||||
counts bool
|
||||
}{
|
||||
{"no report yet, then one", `{}`, time.Time{}, time.Now(), true},
|
||||
{"a report left before the assignment", `{"node":"ace","module":"mesh-build-node","assigned":"2026-10-25T19:56:45Z"}`, assigned, left, false},
|
||||
{"a report left before a value with no time", `{"node":"ace","module":"mesh-build-node"}`, assigned, left, false},
|
||||
{"a report written since the assignment", `{"node":"ace","module":"mesh-build-node","assigned":"2026-10-25T19:56:45Z"}`, assigned, assigned.Add(30 * time.Second), true},
|
||||
} {
|
||||
t.Run(c.name, func(t *testing.T) {
|
||||
set := &buildrun.ToolchainSet{}
|
||||
var said []string
|
||||
gate := newToolchainGate([]string{buildrun.NodeBuildModule}, set.Put, func(f string, a ...any) { said = append(said, fmt.Sprintf(f, a...)) })
|
||||
for _, node := range []string{"g14", "novox", "shanks"} {
|
||||
gate.Assignment(node+".mesh-build-node", []byte(`{}`), false, time.Time{})
|
||||
key, value := gateReport(t, node, "v26.12.1")
|
||||
gate.Toolchain(buildrun.NodeBuildModule, key, value, false)
|
||||
}
|
||||
gate.Settled()
|
||||
if gate.Assignment("ace.mesh-build-node", []byte(c.assignment), false, c.revision) {
|
||||
t.Fatal("an assignment with no report passed something on")
|
||||
}
|
||||
key, value := report(t, "ace", "v26.12.0", c.at)
|
||||
if got := gate.Toolchain(buildrun.NodeBuildModule, key, value, false); got != c.counts {
|
||||
t.Fatalf("ace's report passed on: %v, want %v", got, c.counts)
|
||||
}
|
||||
// A rewrite of the assignment that does not move it changes nothing, and nothing is said again.
|
||||
if gate.Assignment("ace.mesh-build-node", []byte(c.assignment), false, c.revision.Add(time.Minute)) {
|
||||
t.Fatal("the same assignment written again changed what was passed on")
|
||||
}
|
||||
v, none := agreedOf(set)
|
||||
if c.counts {
|
||||
if !strings.HasPrefix(none, "builders disagree: v26.12.0 recipe f59571cf4be75adf on ace") {
|
||||
t.Fatalf("ace's own report counts and disagrees; got %q, %q", v, none)
|
||||
}
|
||||
return
|
||||
}
|
||||
if v != "v26.12.1" || none != "" {
|
||||
t.Fatalf("ace's left report is no builder's, so g14, novox and shanks agree; got %q, %q", v, none)
|
||||
}
|
||||
if len(said) != 1 || !strings.Contains(said[0], "before mesh-build-node's assignment on ace at 2026-10-25T19:56:45Z") {
|
||||
t.Fatalf("said %q, want once why ace's report is left out", said)
|
||||
}
|
||||
// ace writes its report again since it was assigned: it counts.
|
||||
key, value = report(t, "ace", "v26.12.1", assigned.Add(time.Minute))
|
||||
if !gate.Toolchain(buildrun.NodeBuildModule, key, value, false) {
|
||||
t.Fatal("ace's new report was not passed on")
|
||||
}
|
||||
if n := len(set.Entries("typescript")); n != 4 {
|
||||
t.Fatalf("four builders report; got %d", n)
|
||||
}
|
||||
})
|
||||
}
|
||||
}
|
||||
@@ -89,7 +89,7 @@ func TestManifestDeclarations(t *testing.T) { // 1238/AC1, 1444 (reads the build
|
||||
if want := []state{{Name: "candidates", History: 10}, {Name: "heard", History: 64}, {Name: "manifests", History: 1}, {Name: "modules", History: 20}, {Name: "taken", History: 1}, {Name: "takeins", History: 1}}; !reflect.DeepEqual(m.State, want) {
|
||||
t.Errorf("state = %+v, want %+v", m.State, want)
|
||||
}
|
||||
if want := []string{"mesh-build-go.toolchains", "mesh-build-node.toolchains", "mesh-controller.assignments", "mesh-controller.builds", "mesh-delivery-checker.previews", "mesh-delivery-gate.source"}; !reflect.DeepEqual(sorted(m.Reads), want) {
|
||||
if want := []string{"mesh-build-go.toolchains", "mesh-build-node.toolchains", "mesh-controller.builds", "mesh-delivery-checker.previews", "mesh-delivery-gate.source"}; !reflect.DeepEqual(sorted(m.Reads), want) {
|
||||
t.Errorf("reads = %v, want %v", m.Reads, want)
|
||||
}
|
||||
// "Reads FORGE" is a consumes of the indexer's stream: the broker grants only buckets by reads (mesh-control
|
||||
|
||||
@@ -22,7 +22,6 @@
|
||||
"reads": [
|
||||
"mesh-build-go.toolchains",
|
||||
"mesh-build-node.toolchains",
|
||||
"mesh-controller.assignments",
|
||||
"mesh-controller.builds",
|
||||
"mesh-delivery-checker.previews",
|
||||
"mesh-delivery-gate.source"
|
||||
|
||||
Reference in New Issue
Block a user