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Remove what only served the controller's compositions: the own-secret resync, the shadow's wants watch and the vault key's follower

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Every node composes its own since group A (issue 1126), so the resync that handed the vault an own secret's value
while a node applied the controller's compositions never runs, the shadow's answers read no want, and nothing follows
the heard vault key any more.

Claude-Session: https://claude.ai/code/session_01NcbgfJ9Gum47zkFKWRaovL
This commit is contained in:
jschoubben
2026-11-02 11:29:47 +01:00
parent 75eb2bb534
commit ec4fe14457
8 changed files with 19 additions and 615 deletions
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internal/ownresync/ownresync.go
-319
View File
@@ -1,319 +0,0 @@
// Package ownresync hands the vault the value of this machine's own secret that runs, where the vault holds another
// (novox/hq issue 1126, cause C4).
//
// The vault's `move-in` never replaces a value it holds, so its first import of an own secret stays fixed; where the
// controller later made that secret anew (a rotation at start, a re-issue), the new value runs and the vault keeps the
// old one. The node's shadow composer sees it: composing from the vault's value, it opens both seals with this
// machine's key and its answer's shown body says delivery.MaskedAnotherValue. After each shadow answer this step asks the
// vault's `move-in` with replace_running: true and what runs, for each own secret so masked, once per running value, and
// says what it asked and what the vault answered. It is move-in's, the verb this node may ask already, so no seat and no
// bus grant changes for it.
//
// **Only while this node applies the controller's compositions**, and only for a module whose composition that runs is
// the one its want names: then the controller's value is what runs, and what runs is the truth the vault lacks. Once the
// node composes its own, the vault's value is the source and nothing is handed. **The switch** is the vault's
// (`own_take_switch`, a person's act): while it is off the vault refuses every ask, and this step says so once per value.
// The vault also refuses any value it changed in the last 15 minutes, so a re-issue the node has not applied yet is
// never put back.
package ownresync
import (
"context"
"crypto/sha256"
"encoding/hex"
"encoding/json"
"fmt"
"sort"
"sync"
"git.novox.be/novox/mesh-sdk/go/catalogue"
"git.novox.be/novox/mesh-sdk/go/delivery"
"github.com/novox/mesh-host/internal/selfcompose"
)
// Verb is the vault's verb this step asks, with ReplaceRunning true in both steps.
const Verb = "move-in"
// ReplaceRunning is move-in's argument that makes it take the running value over the one the vault holds.
const ReplaceRunning = "replace_running"
// Env is what the step reads and asks.
type Env struct {
Node string
// Composes is whose compositions the node applies now: delivery.ComposesController, delivery.ComposesOwn, or ""
// while its agent has not decided. The step hands nothing but for ComposesController.
Composes func() string
// Running is what the node runs now (agent.Everything).
Running func() []delivery.Composed
// Get reads one key's latest value; nil and no error when there is none.
Get func(ctx context.Context, bucket, key string) ([]byte, error)
// Unseal opens a value sealed to this machine; Seal seals a value to a raw X25519 key in base64 (identity.Seal).
Unseal func(sealed string) ([]byte, error)
Seal func(to string, value []byte) (string, error)
// Ask asks one of the vault's verbs in this engine's own name (link.Session.AskVault).
Ask func(ctx context.Context, verb string, args map[string]any) (json.RawMessage, error)
Say func(string)
}
// Outcome is what the step did for one own secret: asked or not, and what was said.
type Outcome struct {
Module string
Name string
Asked bool
Said string
// Retry says a read or an ask the bus did not answer stopped it: no answer, kept as none, and the step is to be
// taken again after a bound (issue 1126, 2026-10-28: "want.shanks.brother could not be read ... no responders").
Retry bool
}
// Resync is the step of one node agent's run.
type Resync struct {
env Env
mu sync.Mutex
// done is, by module/name, the running value's fingerprint the vault was asked with or why it was not: each is
// asked, and each reason said, once.
done map[string]string
}
// New is the step for one node.
func New(env Env) *Resync {
if env.Say == nil {
env.Say = func(string) {}
}
return &Resync{env: env, done: map[string]string{}}
}
// Take reads the node's shadow answers and hands the vault what runs of each own secret they say another value of.
func (r *Resync) Take(ctx context.Context, answers map[string]delivery.CandidateAnswer) []Outcome {
seen := map[delivery.OwnValueDiffers]bool{}
var drift []delivery.OwnValueDiffers
proposals := make([]string, 0, len(answers))
for g := range answers {
proposals = append(proposals, g)
}
sort.Strings(proposals)
for _, g := range proposals {
for _, o := range delivery.OwnValuesDiffer(answers[g]) {
if !seen[o] {
seen[o] = true
drift = append(drift, o)
}
}
}
if len(drift) == 0 {
return nil
}
composes := ""
if r.env.Composes != nil {
composes = r.env.Composes()
}
var out []Outcome
for _, o := range drift {
res := r.one(ctx, composes, o)
if res.Said != "" || res.Retry {
out = append(out, res)
}
}
return out
}
// one is the step for one own secret: Said is empty when it was done before for the same value and reason.
func (r *Resync) one(ctx context.Context, composes string, o delivery.OwnValueDiffers) Outcome {
res := Outcome{Module: o.Module, Name: o.Name}
key := o.Module + "/" + o.Name
if composes == "" {
return res // the agent has not decided whose compositions it applies: taken again once it has
}
if composes != delivery.ComposesController {
return r.said(key, "not:composes", res, fmt.Sprintf("%s holds another value in the vault than runs here, and "+
"nothing is handed: this node composes its own (%q), so the vault's value is the source", key, composes))
}
sealed, why, failed := r.running(ctx, o)
if failed != nil {
// The bus did not answer: no reason to keep, and taken again (Retry); said once per reason.
res.Retry = true
return r.said(key, "retry:"+why, res, fmt.Sprintf("%s holds another value in the vault than runs here, and "+
"nothing is handed yet: %s; asked again", key, why))
}
if why != "" {
return r.said(key, "not:"+why, res, fmt.Sprintf("%s holds another value in the vault than runs here, and "+
"nothing is handed: %s", key, why))
}
sum := sha256.Sum256([]byte(sealed))
fp := hex.EncodeToString(sum[:])
r.mu.Lock()
asked := r.done[key] == fp
r.mu.Unlock()
if asked {
return res
}
value, err := r.env.Unseal(sealed)
if err != nil {
return r.said(key, "not:unseal:"+fp, res, fmt.Sprintf("%s: what runs does not open with this machine's key, so "+
"nothing is handed: %v", key, err))
}
defer wipe(value)
said, err := r.hand(ctx, o, value)
if err != nil {
if ctx.Err() != nil {
return res // the run ended: asked again in the next
}
if selfcompose.BusFailed(err) {
// The vault did not answer on the bus: no word of the vault's, so not kept as asked (Retry).
res.Retry = true
return r.said(key, "retry:ask", res, fmt.Sprintf("%s: the vault's %s with replace_running did not answer, "+
"and is asked again: %v", key, Verb, err))
}
said = fmt.Sprintf("%s: the vault's %s with replace_running refused: %v", key, Verb, err)
}
// Once per running value, whatever the vault answered: a refusal is the vault's word, said once, and a new value
// that runs asks again.
r.mu.Lock()
r.done[key] = fp
r.mu.Unlock()
res.Asked, res.Said = true, said
r.env.Say(said)
return res
}
// said says why once per reason, and keeps the reason as done.
func (r *Resync) said(key, reason string, res Outcome, why string) Outcome {
r.mu.Lock()
again := r.done[key] == reason
r.done[key] = reason
r.mu.Unlock()
if again {
return res
}
res.Said = why
r.env.Say(why)
return res
}
// running is the sealed value of o in the composition that runs, when that composition is the one the module's want
// names; or why it is not handed, with the error of a read the bus did not answer, which is no answer.
func (r *Resync) running(ctx context.Context, o delivery.OwnValueDiffers) (sealed, why string, failed error) {
var comp *delivery.Composed
if r.env.Running != nil {
for _, c := range r.env.Running() {
if c.Module == o.Module {
c := c
comp = &c
break
}
}
}
if comp == nil {
return "", o.Module + " runs no composition here", nil
}
wantKey, err := delivery.WantKey(r.env.Node, o.Module)
if err != nil {
return "", err.Error(), nil
}
raw, err := r.env.Get(ctx, delivery.AssignerWantsBucket, wantKey)
if err != nil {
return "", fmt.Sprintf("its want %s could not be read (%v)", wantKey, err), err
}
if raw == nil {
return "", fmt.Sprintf("it has no want %s", wantKey), nil
}
want, err := delivery.DecodeWant(raw)
if err != nil {
return "", fmt.Sprintf("its want %s is not one: %v", wantKey, err), nil
}
if want.Self || want.Removed || want.Composed == "" {
return "", fmt.Sprintf("its want %s names no composition of the controller's", wantKey), nil
}
// What runs is the composition the want names, as the module's have says: applied and running.
haveKey, err := delivery.HaveKey(r.env.Node, o.Module)
if err != nil {
return "", err.Error(), nil
}
raw, err = r.env.Get(ctx, delivery.HaveBucket, haveKey)
if err != nil {
return "", fmt.Sprintf("its have %s could not be read (%v)", haveKey, err), err
}
if raw == nil {
return "", fmt.Sprintf("it has no have %s", haveKey), nil
}
have, err := delivery.DecodeHave(raw)
if err != nil {
return "", fmt.Sprintf("its have %s is not one: %v", haveKey, err), nil
}
if have.Composed != want.Composed || have.Phase != delivery.PhaseRunning {
return "", fmt.Sprintf("what runs (%s, %s) is not yet the composition its want names (%s)", have.Composed,
have.Phase, want.Composed), nil
}
// On a node the resource's id carries its module's name (`only-office.needs-jwt`); delivery.OwnNeedName reads it.
id := o.Module + "." + catalogue.NeedID(o.Name)
for _, res := range comp.Resources {
var body struct {
ID string `json:"id"`
Sealed any `json:"sealed"`
}
if json.Unmarshal(res, &body) != nil {
continue
}
if name, own := delivery.OwnNeedName(o.Module, body.ID); !own || name != o.Name {
continue
}
if s, ok := body.Sealed.(string); ok && s != "" {
return s, "", nil
}
return "", fmt.Sprintf("its resource %s carries no value sealed to this machine", id), nil
}
return "", fmt.Sprintf("what runs holds no resource %s", id), nil
}
// hand asks the vault's two steps with value, and checks what the vault holds after by its fingerprint.
func (r *Resync) hand(ctx context.Context, o delivery.OwnValueDiffers, value []byte) (string, error) {
raw, err := r.env.Ask(ctx, Verb, map[string]any{ReplaceRunning: true, "module": o.Module, "name": o.Name,
"why": "this node's shadow answer says the vault holds another value than runs here"})
if err != nil {
return "", err
}
var opened struct {
Call string `json:"call"`
SealTo string `json:"seal_to"`
Secret string `json:"secret"`
}
if err := json.Unmarshal(raw, &opened); err != nil || opened.Call == "" || opened.SealTo == "" {
return "", fmt.Errorf("the vault answered no call and no key to seal to")
}
sealed, err := r.env.Seal(opened.SealTo, value)
if err != nil {
return "", fmt.Errorf("the vault's key for the call is not a sealing key: %w", err)
}
raw, err = r.env.Ask(ctx, Verb, map[string]any{ReplaceRunning: true, "call": opened.Call, "sealed": sealed})
if err != nil {
return "", err
}
var kept struct {
Secret string `json:"secret"`
From int `json:"from_generation"`
To int `json:"to_generation"`
Unchanged bool `json:"unchanged"`
Fingerprint string `json:"fingerprint"`
Said string `json:"said"`
}
if err := json.Unmarshal(raw, &kept); err != nil || kept.Secret == "" {
return "", fmt.Errorf("the vault answered %s with no secret", opened.Secret)
}
sum := sha256.Sum256(value)
if kept.Fingerprint != "sha256:"+hex.EncodeToString(sum[:]) {
return "", fmt.Errorf("the vault says it holds %s at generation %d, but not the value handed in", kept.Secret, kept.To)
}
if kept.Unchanged {
return fmt.Sprintf("handed the vault what runs of %s: it held that value already (generation %d)", kept.Secret, kept.To), nil
}
return fmt.Sprintf("handed the vault what runs of %s: generation %d replaced by %d, the value that runs", kept.Secret,
kept.From, kept.To), nil
}
func wipe(b []byte) {
for i := range b {
b[i] = 0
}
}
internal/ownresync/ownresync_test.go
-117
View File
@@ -1,117 +0,0 @@
package ownresync
import (
"context"
"crypto/sha256"
"encoding/hex"
"encoding/json"
"errors"
"strings"
"testing"
"git.novox.be/novox/mesh-sdk/go/delivery"
)
// Issue 1126, cause C4: after a shadow answer saying the vault holds another value of an own secret than runs, the node
// hands the vault what runs, in the verb's two steps, once per running value; and only while it applies the
// controller's compositions and runs the one its want names.
func TestTheNodeHandsTheVaultWhatRunsOfADriftedOwnSecret(t *testing.T) {
const running = "the-value-that-runs"
digest := "sha256:" + strings.Repeat("a", 64)
fp := "src2:" + strings.Repeat("b", 64)
sum := sha256.Sum256([]byte(running))
answers := map[string]delivery.CandidateAnswer{"g": {Proposal: "p-1", Revision: 1, Verdict: delivery.CandidateDiffers,
Differs: []delivery.ModuleDiffers{{Module: "only-office", Why: "the resource differs", Bodies: []delivery.ResourceBodies{
{ID: "only-office.needs-jwt", Composed: `{"sealed":"` + delivery.MaskedAnotherValue + `"}`, Running: `{"sealed":"` + delivery.MaskedAnotherValue + `"}`},
{ID: "only-office.needs-salt", Composed: `{"sealed":"<masked: another seal of the same value>"}`}}}}}}
for name, row := range map[string]struct {
composes string
runs string // the have's composition digest
refuse string // the vault's refusal
asks int // the vault's verb asked, both passes
says string
// Issue 1126, 2026-10-28: a read or an ask the bus did not answer is no answer: taken again (Retry), never kept.
wantRead string // the want's read: "" answers it, "fails" the bus does not answer, "absent" no key
retry bool
}{
"applies the controller's, runs its want": {delivery.ComposesController, digest, "", 2, "generation 1 replaced by 2", "", false},
"composes its own": {delivery.ComposesOwn, digest, "", 0, "composes its own", "", false},
"not decided yet": {"", digest, "", 0, "", "", false},
"runs not yet what its want names": {delivery.ComposesController, "sha256:" + strings.Repeat("c", 64), "", 0, "not yet the composition", "", false},
"the vault refuses": {delivery.ComposesController, digest, "switched off", 1, "switched off", "", false},
"the vault does not answer": {delivery.ComposesController, digest, "nats: no responders available for request", 2, "asked again", "", true},
"the want's read does not answer": {delivery.ComposesController, digest, "", 0, "asked again", "fails", true},
"it has no want": {delivery.ComposesController, digest, "", 0, "it has no want", "absent", false},
} {
var asked []map[string]any
var said []string
want, _ := delivery.EncodeWant(delivery.Want{FP: fp, Composed: digest})
have, _ := delivery.EncodeHave(delivery.Have{FP: fp, Composed: row.runs, Phase: delivery.PhaseRunning, Health: delivery.HealthOK})
r := New(Env{Node: "novox", Composes: func() string { return row.composes },
Running: func() []delivery.Composed {
return []delivery.Composed{{Node: "novox", Module: "only-office", FP: fp, Resources: []json.RawMessage{
// As novox runs it (its shadow answer, 2026-10-28): the id carries the module's name.
json.RawMessage(`{"id":"only-office.needs-jwt","module":"only-office","type":"file",` +
`"path":"/var/lib/only-office/jwt.secret","sealed":"box-of-the-running-value"}`)}}}
},
Get: func(_ context.Context, bucket, key string) ([]byte, error) {
switch {
case bucket == delivery.AssignerWantsBucket && key == "want.novox.only-office" && row.wantRead == "fails":
return nil, errors.New("the bucket mesh-delivery-assigner_wants: nats: no responders available for request")
case bucket == delivery.AssignerWantsBucket && key == "want.novox.only-office" && row.wantRead == "absent":
return nil, nil
case bucket == delivery.AssignerWantsBucket && key == "want.novox.only-office":
return want, nil
case bucket == delivery.HaveBucket && key == "novox.only-office":
return have, nil
}
return nil, nil
},
Unseal: func(sealed string) ([]byte, error) {
if sealed != "box-of-the-running-value" {
return nil, errors.New("not this machine's")
}
return []byte(running), nil
},
Seal: func(to string, value []byte) (string, error) { return to + "(" + string(value) + ")", nil },
Ask: func(_ context.Context, verb string, args map[string]any) (json.RawMessage, error) {
asked = append(asked, args)
if verb != "move-in" || args["replace_running"] != true {
t.Errorf("%s: asked %s with %v, not move-in with replace_running", name, verb, args)
}
if row.refuse != "" {
return nil, errors.New(row.refuse)
}
if args["call"] == nil {
if args["module"] != "only-office" || args["name"] != "jwt" || args["node"] != nil {
t.Errorf("%s: the first step names %v", name, args)
}
return json.RawMessage(`{"call":"c1","seal_to":"key","secret":"own/novox/only-office/jwt"}`), nil
}
if args["sealed"] != "key("+running+")" {
t.Errorf("%s: handed %v, not what runs sealed to the call's key", name, args["sealed"])
}
return json.RawMessage(`{"secret":"own/novox/only-office/jwt","from_generation":1,"to_generation":2,` +
`"fingerprint":"sha256:` + hex.EncodeToString(sum[:]) + `"}`), nil
},
Say: func(s string) { said = append(said, s) }})
first := r.Take(context.Background(), answers)
again := r.Take(context.Background(), answers)
if len(asked) != row.asks {
t.Errorf("%s: the vault asked %d times, want %d: %v", name, len(asked), row.asks, asked)
}
if retry := len(first) == 1 && first[0].Retry; retry != row.retry {
t.Errorf("%s: taken again %v, want %v: %+v", name, retry, row.retry, first)
}
if row.retry && (len(again) != 1 || !again[0].Retry || again[0].Said != "") || !row.retry && len(again) != 0 {
t.Errorf("%s: the same answer did or said something again: %+v", name, again)
}
all := strings.Join(said, "\n")
if row.says == "" && (len(first) != 0 || all != "") || row.says != "" && (len(first) != 1 || !strings.Contains(all, row.says)) {
t.Errorf("%s: did %+v and said %q, want %q", name, first, all, row.says)
}
if strings.Contains(all, running) {
t.Errorf("%s: the value is in what the node said", name)
}
}
}
internal/selfcompose/selfcompose_test.go
+7 -7
View File
@@ -1057,7 +1057,7 @@ func TestTheNodeComposesItsWantsFromTheBus(t *testing.T) {
go func() { sh.Keep(sctx, func(int) time.Duration { return 5 * time.Millisecond }); close(kept) }()
time.Sleep(30 * time.Millisecond)
sb.missing(delivery.PlacementCandidatesBucket, false)
sb.made(7)
sb.made(6)
rec, _ := delivery.EncodeHaveNode(delivery.HaveNode{Record: &delivery.NodeRecord{Node: "n1", TunnelKey: "k", SealingKey: "sk", Capabilities: []string{"systemd"}}})
tp, _ := delivery.EncodePlacement(trunk)
sb.put(delivery.PlacementBucket, "placement.n1", tp, 1)
@@ -1321,7 +1321,7 @@ func TestTheNodeComposesItsWantsFromTheBus(t *testing.T) {
nctx, ncancel := context.WithCancel(ctx)
defer ncancel()
go func() { _ = nsh.Run(nctx) }()
nb.made(7)
nb.made(6)
nb.put(delivery.PlacementBucket, "placement.n1", tp, 1)
nb.put(delivery.HaveBucket, "n1.node", rec, 1)
for name, m := range mods {
@@ -1335,19 +1335,19 @@ func TestTheNodeComposesItsWantsFromTheBus(t *testing.T) {
oldRaw, _ := delivery.EncodePlacementCandidate(delivery.PlacementCandidate{Proposal: "older", Placement: &trunk})
oldKey, _ := delivery.PlacementCandidateKey("older", "n1")
nb.put(delivery.PlacementCandidatesBucket, oldKey, oldRaw, 2)
for _, bucket := range []string{delivery.PlacementCandidatesBucket, delivery.PlacementBucket, delivery.HaveBucket, delivery.ModulesBucket, ResolvedBucket, delivery.BuilderBuildsBucket} {
for _, bucket := range []string{delivery.PlacementCandidatesBucket, delivery.PlacementBucket, delivery.HaveBucket, delivery.ModulesBucket, delivery.BuilderBuildsBucket} {
nb.send(bucket, agent.Update{Caught: true})
}
select {
case a := <-nanswered:
if g := a["same"]; g.Verdict != delivery.CandidateRefused || !strings.Contains(g.Refused, delivery.AssignerWantsBucket) || g.Proposal != "same" {
t.Errorf("a shadow waiting for its wants answered %+v", g)
if g := a["same"]; g.Verdict != delivery.CandidateRefused || !strings.Contains(g.Refused, ResolvedBucket) || g.Proposal != "same" {
t.Errorf("a shadow waiting for its values answered %+v", g)
}
case <-time.After(5 * time.Second):
t.Fatal("a shadow not ready after its wait answered nothing")
}
nmu.Lock()
if !strings.Contains(strings.Join(nsaid, "\n"), "this node answers no placement candidate yet: the node has not read "+delivery.AssignerWantsBucket) {
if !strings.Contains(strings.Join(nsaid, "\n"), "this node answers no placement candidate yet: the node has not read "+ResolvedBucket) {
t.Errorf("a shadow not ready said %q", nsaid)
}
nmu.Unlock()
@@ -1355,7 +1355,7 @@ func TestTheNodeComposesItsWantsFromTheBus(t *testing.T) {
scancel()
<-kept
setFor(t, &slowAfter, time.Nanosecond) // every answer is slow: said, and noted in words that do not move with the time
nb.send(delivery.AssignerWantsBucket, agent.Update{Caught: true})
nb.send(ResolvedBucket, agent.Update{Caught: true})
select {
case a := <-nanswered:
if g := a["same"]; g.Verdict != delivery.CandidateSame || !strings.Contains(g.Note, "this answer took over") {
internal/selfcompose/shadow.go
+2 -36
View File
@@ -32,8 +32,6 @@ type Shadow struct {
mu sync.Mutex
candidates map[string]map[string]candidateKey // by proposal, by node
answers map[string]delivery.CandidateAnswer
// wants are the node's wants by module (agent.NodeModule for its own); a change of one answers again.
wants map[string]delivery.Want
// ran is, by module, the digest the module's have says runs: what runs, where the agent's list holds only the copy
// from the declaration kept before the switch (issue 1126, probe #532 on shanks).
ran map[string]string
@@ -64,7 +62,7 @@ type answeredAt struct {
}
// inputWords name the shadow's inputs, in Run's order, as an answer says which of them woke it.
var inputWords = [...]string{"the candidate", "placement", "records", "modules", "values", "haves", "wants"}
var inputWords = [...]string{"the candidate", "placement", "records", "modules", "values", "haves"}
// wokenBy says what moved between the answer a proposal stands at (had, when done) and the one about to be composed (at):
// its first answer, a retry, its candidate's revisions, or the inputs that changed, by their words.
@@ -99,7 +97,7 @@ type candidateKey struct {
// NewShadow is the shadow composer of one node; answer writes the node's answers into its own have key.
func NewShadow(env Env, answer func(ctx context.Context, answers map[string]delivery.CandidateAnswer)) *Shadow {
return &Shadow{c: New(env), answer: answer, candidates: map[string]map[string]candidateKey{},
answers: map[string]delivery.CandidateAnswer{}, wants: map[string]delivery.Want{}, ran: map[string]string{}}
answers: map[string]delivery.CandidateAnswer{}, ran: map[string]string{}}
}
// Keep runs the shadow until ctx ends, beginning again after backoff(try) whenever it stops: an input it cannot watch
@@ -141,7 +139,6 @@ func (s *Shadow) Run(ctx context.Context) error {
defer cancel()
s.mu.Lock()
s.candidates = map[string]map[string]candidateKey{}
s.wants = map[string]delivery.Want{}
s.ran = map[string]string{}
s.answered = map[string]answeredAt{}
s.moved = [len(inputWords)]uint64{}
@@ -159,8 +156,6 @@ func (s *Shadow) Run(ctx context.Context) error {
{ResolvedBucket, node + ".>", (*Composer).takeValue, nil},
// What this node runs moved: an apply ends in its module's have.
{delivery.HaveBucket, node + ".>", nil, nil},
// Its wants.
{delivery.AssignerWantsBucket, "want." + node + ".>", nil, nil},
}
type tagged struct {
in int
@@ -225,8 +220,6 @@ func (s *Shadow) Run(ctx context.Context) error {
case t.in == 5:
folded := c.takeModuleHave(t.u)
changed = s.takeRan(t.u) || folded
case t.in == 6:
changed = s.takeWant(t.u)
default:
changed = c.takeChanged(ins[t.in], t.u)
}
@@ -685,33 +678,6 @@ func sameAnswer(a, b delivery.CandidateAnswer) bool {
return errA == nil && errB == nil && string(x) == string(y)
}
// takeWant takes one of the node's wants, and says whether it changed.
func (s *Shadow) takeWant(u agent.Update) bool {
module := ""
var w delivery.Want
if _, err := delivery.ParseWantNodeKey(u.Key); err == nil {
module = agent.NodeModule
} else if node, m, err := delivery.ParseWantKey(u.Key); err == nil && node == s.c.env.Node {
module = m
if !u.Deleted {
if w, err = delivery.DecodeWant(u.Value); err != nil || w.Removed || w.FP == "" {
u.Deleted = true
}
}
} else {
return false
}
s.mu.Lock()
defer s.mu.Unlock()
old, had := s.wants[module]
if u.Deleted {
delete(s.wants, module)
return had
}
s.wants[module] = w
return !had || old.FP != w.FP
}
// sameValue says whether two sealed values open, with this node's key, to the same value; unknown when either does not
// open (or the node holds no opener). Only the comparison leaves: never a value (issue 1126, the shadow shows its work).
func (c *Composer) sameValue(a, b string) (same, known bool) {