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Builders: a stale toolchain report no longer counts, and a disagreement no longer blanks a module already fingerprinted (issue 1940) #47

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jschoubben merged 1 commits from fix/1940-stale-toolchain-record into main 2026-10-25 20:09:27 +00:00
Conversation 1 Commits 1 Files Changed 8
+485 -163
8 changed files with 485 additions and 163 deletions
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modules/mesh-delivery-builder/cmd/mesh-delivery-builder/standing.go
+62 -27
View File
@@ -28,8 +28,11 @@ import (
//
// 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; it is passed on as deleted otherwise,
// and passed on again when the module is assigned there again. Until the assignments are settled (or where they cannot
// 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 {
@@ -38,14 +41,14 @@ type toolchainGate struct {
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]bool // <node>.<module> with an open assignment
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]bool // <module>/<key> said as left out, so it is said once
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]bool{},
raw: map[string]map[string][]byte{}, left: map[string]bool{}}
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
}
@@ -67,20 +70,31 @@ func (g *toolchainGate) Toolchain(module, key string, value []byte, deleted bool
return g.pass(module, key)
}
// Assignment takes one change of the controller's assignments in and answers whether what it passed on changed.
func (g *toolchainGate) Assignment(key string, value []byte, deleted bool) bool {
// 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
}
open := !deleted && openAssignment(value)
assigned, open := openAssignment(value)
open = open && !deleted
g.mu.Lock()
defer g.mu.Unlock()
if g.standing[key] == open {
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] = true
g.standing[key] = since
} else {
delete(g.standing, key)
}
@@ -111,37 +125,58 @@ func (g *toolchainGate) Settled() bool {
return changed
}
// pass hands one key on as it stands: its value when its node is assigned (or the assignments are not known), deleted
// otherwise. The caller holds mu.
// 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)
if err != nil || !g.known || g.standing[node+"."+module] {
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] {
g.left[module+"/"+key] = true
g.logf("%s.%s is left out of the agreed toolchain: %s has no assignment on %s, so it is no builder (issue 1940)",
delivery.ToolchainsBucket(module), key, module, node)
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)
}
// 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).
func openAssignment(value []byte) bool {
// 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 {
Ended time.Time `json:"ended"`
State string `json:"state"`
Assigned time.Time `json:"assigned"`
Ended time.Time `json:"ended"`
State string `json:"state"`
}
if json.Unmarshal(value, &a) != nil {
return false
return time.Time{}, false
}
return a.Ended.IsZero() && a.State == ""
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
@@ -155,7 +190,7 @@ func watchAssignments(ctx context.Context, js bucketOpener, gate *toolchainGate,
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)) }
each := func(e jetstream.KeyValueEntry) { gate.Assignment(e.Key(), e.Value(), !opOf(e), e.Created()) }
w, err := settle(ctx, kv, each)
if err != nil {
return nil, fmt.Errorf("the bucket %s: %w", provider.AssignmentsBucket, err)
@@ -165,7 +200,7 @@ func watchAssignments(ctx context.Context, js bucketOpener, gate *toolchainGate,
}
go func() {
errs <- follow(ctx, w, func(e jetstream.KeyValueEntry) {
if gate.Assignment(e.Key(), e.Value(), !opOf(e)) {
if gate.Assignment(e.Key(), e.Value(), !opOf(e), e.Created()) {
changed(ctx)
}
})
modules/mesh-delivery-builder/cmd/mesh-delivery-builder/standing_test.go
+75 -22
View File
@@ -3,6 +3,7 @@ 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"
@@ -44,10 +45,10 @@ func TestAnUnassignedBuildNodesReportIsNoBuilder(t *testing.T) {
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)
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)
gate.Assignment("ace.mesh-build-go", []byte(`{"node":"ace","module":"mesh-build-go"}`), false) // another module's: no matter
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")
}
@@ -63,20 +64,20 @@ func TestAnUnassignedBuildNodesReportIsNoBuilder(t *testing.T) {
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) {
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) {
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)
gate.Assignment("ace.mesh-build-node", nil, true, time.Time{})
if v, _ := agreedOf(set); v != "v26.12.1" {
t.Fatalf("got %q", v)
}
@@ -90,23 +91,75 @@ func TestAnUnassignedBuildNodesReportIsNoBuilder(t *testing.T) {
}
}
// A newly assigned build node that has not reported yet changes nothing; its report counts as it comes.
// 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) {
set := &buildrun.ToolchainSet{}
gate := newToolchainGate([]string{buildrun.NodeBuildModule}, set.Put, func(string, ...any) {})
gate.Settled()
if gate.Assignment("g14.mesh-build-node", []byte(`{}`), false) {
t.Fatal("an assignment with no report passed something on")
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
}
key, value := gateReport(t, "g14", "v26.12.1")
if !gate.Toolchain(buildrun.NodeBuildModule, key, value, false) {
t.Fatal("an assigned node's report was not passed on")
}
key, value = gateReport(t, "ace", "v26.12.0")
if gate.Toolchain(buildrun.NodeBuildModule, key, value, false) {
t.Fatal("a report of a node with no assignment key was passed on after the assignments settled")
}
if v, none := agreedOf(set); v != "v26.12.1" || none != "" {
t.Fatalf("got %q, %q", v, none)
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)
}
})
}
}
modules/mesh-delivery-checker/cmd/mesh-delivery-checker/standing.go
+62 -27
View File
@@ -28,8 +28,11 @@ import (
//
// 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; it is passed on as deleted otherwise,
// and passed on again when the module is assigned there again. Until the assignments are settled (or where they cannot
// 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 {
@@ -38,14 +41,14 @@ type toolchainGate struct {
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]bool // <node>.<module> with an open assignment
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]bool // <module>/<key> said as left out, so it is said once
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]bool{},
raw: map[string]map[string][]byte{}, left: map[string]bool{}}
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
}
@@ -67,20 +70,31 @@ func (g *toolchainGate) Toolchain(module, key string, value []byte, deleted bool
return g.pass(module, key)
}
// Assignment takes one change of the controller's assignments in and answers whether what it passed on changed.
func (g *toolchainGate) Assignment(key string, value []byte, deleted bool) bool {
// 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
}
open := !deleted && openAssignment(value)
assigned, open := openAssignment(value)
open = open && !deleted
g.mu.Lock()
defer g.mu.Unlock()
if g.standing[key] == open {
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] = true
g.standing[key] = since
} else {
delete(g.standing, key)
}
@@ -111,37 +125,58 @@ func (g *toolchainGate) Settled() bool {
return changed
}
// pass hands one key on as it stands: its value when its node is assigned (or the assignments are not known), deleted
// otherwise. The caller holds mu.
// 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)
if err != nil || !g.known || g.standing[node+"."+module] {
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] {
g.left[module+"/"+key] = true
g.logf("%s.%s is left out of the agreed toolchain: %s has no assignment on %s, so it is no builder (issue 1940)",
delivery.ToolchainsBucket(module), key, module, node)
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)
}
// 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).
func openAssignment(value []byte) bool {
// 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 {
Ended time.Time `json:"ended"`
State string `json:"state"`
Assigned time.Time `json:"assigned"`
Ended time.Time `json:"ended"`
State string `json:"state"`
}
if json.Unmarshal(value, &a) != nil {
return false
return time.Time{}, false
}
return a.Ended.IsZero() && a.State == ""
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
@@ -155,7 +190,7 @@ func watchAssignments(ctx context.Context, js bucketOpener, gate *toolchainGate,
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)) }
each := func(e jetstream.KeyValueEntry) { gate.Assignment(e.Key(), e.Value(), !opOf(e), e.Created()) }
w, err := settle(ctx, kv, each)
if err != nil {
return nil, fmt.Errorf("the bucket %s: %w", provider.AssignmentsBucket, err)
@@ -165,7 +200,7 @@ func watchAssignments(ctx context.Context, js bucketOpener, gate *toolchainGate,
}
go func() {
errs <- follow(ctx, w, func(e jetstream.KeyValueEntry) {
if gate.Assignment(e.Key(), e.Value(), !opOf(e)) {
if gate.Assignment(e.Key(), e.Value(), !opOf(e), e.Created()) {
changed(ctx)
}
})
modules/mesh-delivery-checker/cmd/mesh-delivery-checker/standing_test.go
+75 -22
View File
@@ -3,6 +3,7 @@ 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"
@@ -44,10 +45,10 @@ func TestAnUnassignedBuildNodesReportIsNoBuilder(t *testing.T) {
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)
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)
gate.Assignment("ace.mesh-build-go", []byte(`{"node":"ace","module":"mesh-build-go"}`), false) // another module's: no matter
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")
}
@@ -63,20 +64,20 @@ func TestAnUnassignedBuildNodesReportIsNoBuilder(t *testing.T) {
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) {
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) {
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)
gate.Assignment("ace.mesh-build-node", nil, true, time.Time{})
if v, _ := agreedOf(set); v != "v26.12.1" {
t.Fatalf("got %q", v)
}
@@ -90,23 +91,75 @@ func TestAnUnassignedBuildNodesReportIsNoBuilder(t *testing.T) {
}
}
// A newly assigned build node that has not reported yet changes nothing; its report counts as it comes.
// 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) {
set := &buildrun.ToolchainSet{}
gate := newToolchainGate([]string{buildrun.NodeBuildModule}, set.Put, func(string, ...any) {})
gate.Settled()
if gate.Assignment("g14.mesh-build-node", []byte(`{}`), false) {
t.Fatal("an assignment with no report passed something on")
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
}
key, value := gateReport(t, "g14", "v26.12.1")
if !gate.Toolchain(buildrun.NodeBuildModule, key, value, false) {
t.Fatal("an assigned node's report was not passed on")
}
key, value = gateReport(t, "ace", "v26.12.0")
if gate.Toolchain(buildrun.NodeBuildModule, key, value, false) {
t.Fatal("a report of a node with no assignment key was passed on after the assignments settled")
}
if v, none := agreedOf(set); v != "v26.12.1" || none != "" {
t.Fatalf("got %q, %q", v, none)
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)
}
})
}
}
modules/mesh-delivery-indexer/cmd/mesh-delivery-indexer/standing.go
+62 -27
View File
@@ -28,8 +28,11 @@ import (
//
// 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; it is passed on as deleted otherwise,
// and passed on again when the module is assigned there again. Until the assignments are settled (or where they cannot
// 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 {
@@ -38,14 +41,14 @@ type toolchainGate struct {
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]bool // <node>.<module> with an open assignment
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]bool // <module>/<key> said as left out, so it is said once
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]bool{},
raw: map[string]map[string][]byte{}, left: map[string]bool{}}
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
}
@@ -67,20 +70,31 @@ func (g *toolchainGate) Toolchain(module, key string, value []byte, deleted bool
return g.pass(module, key)
}
// Assignment takes one change of the controller's assignments in and answers whether what it passed on changed.
func (g *toolchainGate) Assignment(key string, value []byte, deleted bool) bool {
// 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
}
open := !deleted && openAssignment(value)
assigned, open := openAssignment(value)
open = open && !deleted
g.mu.Lock()
defer g.mu.Unlock()
if g.standing[key] == open {
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] = true
g.standing[key] = since
} else {
delete(g.standing, key)
}
@@ -111,37 +125,58 @@ func (g *toolchainGate) Settled() bool {
return changed
}
// pass hands one key on as it stands: its value when its node is assigned (or the assignments are not known), deleted
// otherwise. The caller holds mu.
// 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)
if err != nil || !g.known || g.standing[node+"."+module] {
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] {
g.left[module+"/"+key] = true
g.logf("%s.%s is left out of the agreed toolchain: %s has no assignment on %s, so it is no builder (issue 1940)",
delivery.ToolchainsBucket(module), key, module, node)
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)
}
// 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).
func openAssignment(value []byte) bool {
// 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 {
Ended time.Time `json:"ended"`
State string `json:"state"`
Assigned time.Time `json:"assigned"`
Ended time.Time `json:"ended"`
State string `json:"state"`
}
if json.Unmarshal(value, &a) != nil {
return false
return time.Time{}, false
}
return a.Ended.IsZero() && a.State == ""
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
@@ -155,7 +190,7 @@ func watchAssignments(ctx context.Context, js bucketOpener, gate *toolchainGate,
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)) }
each := func(e jetstream.KeyValueEntry) { gate.Assignment(e.Key(), e.Value(), !opOf(e), e.Created()) }
w, err := settle(ctx, kv, each)
if err != nil {
return nil, fmt.Errorf("the bucket %s: %w", provider.AssignmentsBucket, err)
@@ -165,7 +200,7 @@ func watchAssignments(ctx context.Context, js bucketOpener, gate *toolchainGate,
}
go func() {
errs <- follow(ctx, w, func(e jetstream.KeyValueEntry) {
if gate.Assignment(e.Key(), e.Value(), !opOf(e)) {
if gate.Assignment(e.Key(), e.Value(), !opOf(e), e.Created()) {
changed(ctx)
}
})
modules/mesh-delivery-indexer/cmd/mesh-delivery-indexer/standing_test.go
+75 -22
View File
@@ -3,6 +3,7 @@ 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"
@@ -44,10 +45,10 @@ func TestAnUnassignedBuildNodesReportIsNoBuilder(t *testing.T) {
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)
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)
gate.Assignment("ace.mesh-build-go", []byte(`{"node":"ace","module":"mesh-build-go"}`), false) // another module's: no matter
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")
}
@@ -63,20 +64,20 @@ func TestAnUnassignedBuildNodesReportIsNoBuilder(t *testing.T) {
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) {
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) {
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)
gate.Assignment("ace.mesh-build-node", nil, true, time.Time{})
if v, _ := agreedOf(set); v != "v26.12.1" {
t.Fatalf("got %q", v)
}
@@ -90,23 +91,75 @@ func TestAnUnassignedBuildNodesReportIsNoBuilder(t *testing.T) {
}
}
// A newly assigned build node that has not reported yet changes nothing; its report counts as it comes.
// 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) {
set := &buildrun.ToolchainSet{}
gate := newToolchainGate([]string{buildrun.NodeBuildModule}, set.Put, func(string, ...any) {})
gate.Settled()
if gate.Assignment("g14.mesh-build-node", []byte(`{}`), false) {
t.Fatal("an assignment with no report passed something on")
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
}
key, value := gateReport(t, "g14", "v26.12.1")
if !gate.Toolchain(buildrun.NodeBuildModule, key, value, false) {
t.Fatal("an assigned node's report was not passed on")
}
key, value = gateReport(t, "ace", "v26.12.0")
if gate.Toolchain(buildrun.NodeBuildModule, key, value, false) {
t.Fatal("a report of a node with no assignment key was passed on after the assignments settled")
}
if v, none := agreedOf(set); v != "v26.12.1" || none != "" {
t.Fatalf("got %q, %q", v, none)
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)
}
})
}
}
modules/mesh-delivery-indexer/internal/index/toolchains.go
+47 -11
View File
@@ -112,6 +112,9 @@ type known struct {
languages map[string]string
bases []string
contexts bool
// held is the fingerprint the bucket holds for the module and the toolchains it was computed with (for a merge, the
// value before it): what stillComputed keeps while the builders agree on no toolchain.
held delivery.Module
}
// Recompute writes again every module whose new-form fingerprint, or reason for none, is no longer what it holds: from
@@ -159,20 +162,24 @@ func (ix *Indexer) recomputeModules(ctx context.Context, overlay map[string]deli
stale := map[string]bool{} // values an SDK that could not read their manifest wrote, judged again (issue 1923)
all := map[string]*known{}
for _, key := range keys {
cur, ok := overlay[key]
if !ok {
value, _, found, err := ix.Modules.Get(ctx, key)
if err != nil {
return fmt.Errorf("modules.%s: %w", key, err)
}
if !found {
continue
}
if cur, err = delivery.DecodeModule(value); err != nil {
cur, merged := overlay[key]
var before delivery.Module
value, _, found, err := ix.Modules.Get(ctx, key)
if err != nil {
return fmt.Errorf("modules.%s: %w", key, err)
}
if found {
if before, err = delivery.DecodeModule(value); err != nil && !merged {
ix.logf("modules.%s holds what is not a module, left: %v", key, err)
continue
}
}
if !merged {
if !found {
continue
}
cur = before
}
held[key] = cur
if cur.Manifest == "" || cur.Inputs2 == nil {
continue
@@ -186,7 +193,7 @@ func (ix *Indexer) recomputeModules(ctx context.Context, overlay map[string]deli
cur, stale[key] = again, true
held[key] = cur
}
all[key] = &known{key: key, cur: cur, languages: languagesOf(m), bases: basesOf(m), contexts: hasContext(m)}
all[key] = &known{key: key, cur: cur, languages: languagesOf(m), bases: basesOf(m), contexts: hasContext(m), held: before}
}
tools := ix.agreed()
type result struct {
@@ -251,6 +258,9 @@ func (ix *Indexer) recomputeModules(ctx context.Context, overlay map[string]deli
r.none = strings.Join(missing, "; ")
case noToolchain != "":
r.none = noToolchain
if fp, ok := stillComputed(module, kept, k, toolchains); ok {
r = result{fp: fp, tcs: k.held.Toolchains}
}
default:
r.fp, r.none = delivery.SourceFingerprint2(kept.With(module, toolchains))
if r.fp != "" {
@@ -381,6 +391,32 @@ func hasContext(m catalogue.Manifest) bool {
return false
}
// stillComputed is the fingerprint a module already holds, kept while a language it is built with has no agreed toolchain
// (issue 1940, 2026-10-25 20:56: a build node assigned again brought a stale report into the agreement, every module's
// fingerprint was blanked to "builders disagree", and the controller's take-in refused modules whose fingerprints were
// computed and built). Only computing a new fingerprint needs the agreement: the held one is kept when its kept inputs,
// with the toolchains it was computed with in place of the languages agreed on none, give it again. Any other input that
// moved (a merge, a base, an agreed toolchain) gives another fingerprint, and the module has none until they agree.
func stillComputed(module string, kept delivery.KeptInputs2, k *known, agreed map[string]delivery.Toolchain2) (string, bool) {
if k.held.FP2 == "" {
return "", false
}
toolchains := map[string]delivery.Toolchain2{}
for artifact, language := range k.languages {
if tc, ok := agreed[artifact]; ok {
toolchains[artifact] = tc
continue
}
used, ok := k.held.Toolchains[language]
if !ok {
return "", false
}
toolchains[artifact] = delivery.Toolchain2{Language: language, Version: used.Version, Recipe: used.Recipe}
}
fp, none := delivery.SourceFingerprint2(kept.With(module, toolchains))
return fp, none == "" && fp == k.held.FP2
}
// toolchainsUsed are the toolchains a fingerprint was computed with, by language (an artifact's toolchain is its language's).
func toolchainsUsed(by map[string]delivery.Toolchain2) map[string]delivery.ToolchainUsed {
if len(by) == 0 {
modules/mesh-delivery-indexer/internal/index/toolchains_test.go
+27 -5
View File
@@ -123,9 +123,16 @@ func TestAgreedToolchainChangesAGoModulesReasonWithNoMerge(t *testing.T) { // 14
}
func TestNodesReportingDifferentVersionsLeaveTheReasonNamingBoth(t *testing.T) { // 1444/AC6
// Both reports are read before the module's first fingerprint is computed (a fingerprint computed before they
// disagree is kept: TestAModuleKeepsTheToolchainsItsFingerprintWasComputedWith).
ix, mods := newFormIndexer(t, mod{"avahi", catalogueManifest(t, "avahi")})
reportToolchain(t, ix, "mesh-build-go", "novox", "go", "go1.27.1")
reportToolchain(t, ix, "mesh-build-go", "ace", "go", "go1.26.0")
for node, version := range map[string]string{"novox": "go1.27.1", "ace": "go1.26.0"} {
key, _ := delivery.ToolchainKey(node, "go")
ix.PutToolchain("mesh-build-go", key, toolchainValue(t, "go", version, "1"), false)
}
if err := ix.Recompute(context.Background()); err != nil {
t.Fatal(err)
}
m, _ := moduleOf(t, mods, "avahi")
if !strings.Contains(m.None2, "builders disagree") || !strings.Contains(m.None2, "go1.27.1") || !strings.Contains(m.None2, "go1.26.0") {
t.Errorf("none2 = %q, want 'builders disagree' naming both versions", m.None2)
@@ -288,9 +295,24 @@ func TestAModuleKeepsTheToolchainsItsFingerprintWasComputedWith(t *testing.T) {
if n.FP2 == m.FP2 || n.Toolchains["go"].Version != "go1.27.2" {
t.Errorf("after the upgrade: fp2 %q (was %q) toolchains %+v, want the new version with the new fingerprint", n.FP2, m.FP2, n.Toolchains)
}
// Nodes that disagree leave no fingerprint and no toolchains.
// Nodes that disagree keep the fingerprint already computed, with its toolchains (issue 1940, 2026-10-25 20:56: a
// stale report blanked every module and the controller's take-in refused modules already built); only a new
// fingerprint needs the agreement: a merge that moves the module's tree gives it none, naming the disagreement.
reportToolchain(t, ix, "mesh-build-go", "ace", "go", "go1.26.0")
if d, _ := moduleOf(t, mods, "avahi"); d.FP2 != "" || d.Toolchains != nil {
t.Errorf("disagreeing nodes: fp2 %q toolchains %+v, want neither", d.FP2, d.Toolchains)
if d, _ := moduleOf(t, mods, "avahi"); d.FP2 != n.FP2 || !reflect.DeepEqual(d.Toolchains, n.Toolchains) || d.None2 != "" {
t.Errorf("disagreeing nodes: fp2 %q toolchains %+v none2 %q, want the fingerprint kept (%q) with %+v", d.FP2, d.Toolchains, d.None2, n.FP2, n.Toolchains)
}
_, _, f := newFormIndexerUnmerged(t, builderModules(t)...)
f.Trees["modules/avahi"] = "tree-avahi-moved"
if err := ix.Apply(context.Background(), f); err != nil {
t.Fatal(err)
}
if d, _ := moduleOf(t, mods, "avahi"); d.FP2 != "" || d.Toolchains != nil || !strings.HasPrefix(d.None2, "builders disagree") {
t.Errorf("a new tree while nodes disagree: fp2 %q toolchains %+v none2 %q, want no fingerprint and the disagreement", d.FP2, d.Toolchains, d.None2)
}
// They agree again: the new tree gets its fingerprint.
reportToolchain(t, ix, "mesh-build-go", "ace", "go", "go1.27.2")
if a, _ := moduleOf(t, mods, "avahi"); a.FP2 == "" || a.FP2 == n.FP2 {
t.Errorf("agreed again: fp2 %q (was %q), want a new fingerprint", a.FP2, n.FP2)
}
}