jschoubben
8ed3b872e0
A module held for its own secret keeps its contributions (leaveOwn). When its grant to the provider was not issued yet, the provider's grants file carried "foreseen: made by the next send" for it, and the applying path passed over stand-ins of a module already held. Such a stand-in now leaves that provision's contribution out of the held module.
256 lines
14 KiB
Go
256 lines
14 KiB
Go
package frombus
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import (
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"context"
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"encoding/json"
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"errors"
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"fmt"
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"strings"
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"testing"
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"git.novox.be/novox/mesh-sdk/go/catalogue"
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"git.novox.be/novox/mesh-sdk/go/compose"
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"git.novox.be/novox/mesh-sdk/go/delivery"
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)
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// aNode is a bus with n1 the hub, each of manifests placed on it and held at the indexer, in the order given.
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func aNode(t *testing.T, manifests ...string) (*bus, map[string]string) {
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t.Helper()
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p := delivery.Placement{Node: "n1", Decided: delivery.NodeDecided{Hub: true, Address: "10.77.0.1"}}
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b := &bus{records: map[string]delivery.NodeRecord{"n1": {Node: "n1", TunnelKey: publicKey(t), SealingKey: "sk", Capabilities: []string{"systemd"}}},
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modules: map[string]delivery.Module{}, manifests: map[string][]byte{}, builds: map[string]*delivery.BuilderBuild{}}
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fps := map[string]string{}
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for i, raw := range manifests {
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module := strings.SplitN(strings.TrimPrefix(raw, `{"module":"`), `"`, 2)[0]
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p.Modules = append(p.Modules, delivery.PlacedModule{Module: module})
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b.modules[module] = delivery.Module{Manifest: delivery.ManifestDigest([]byte(raw))}
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b.manifests[delivery.ManifestDigest([]byte(raw))] = []byte(raw)
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fps[module] = "src2:" + strings.Repeat(string(rune('1'+i)), 64)
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}
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b.placements = map[string]delivery.Placement{"n1": p}
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return b, fps
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}
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// Issue 774, 2026-10-30 19:30: a node refused whole after holding a module says what it held and why, since the last
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// refusal can be of the held module's stub (node-tools held, then "its build produced 0 bundle(s)", its own why unsaid).
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func aNodeRefusedWholeSaysWhatItHeld(t *testing.T) {
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refused := `{"module":"power","version":"1","items":[{"collection":"contribution:node-bar:block","attributes":{"shows":"state"},"template":"files/a"}]}`
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needs := `{"module":"lamp","version":"1","requires":["nothing-provides-this"]}`
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b, fps := aNode(t, refused, needs)
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_, _, held, err := Compose(context.Background(), b, Mesh{}, Scope{Node: "n1"}, fps)
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if err == nil || !strings.Contains(err.Error(), "nothing provides") || !strings.Contains(err.Error(), `held before: power: `) ||
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!strings.Contains(err.Error(), `"shows" is none of them`) {
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t.Errorf("the node refused whole with %v (held %v), want lamp's refusal and power held before, with its why", err, held)
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}
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}
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// Issue 774: the culprit rule takes a module whose stub composes or fails otherwise; the runtime only where its stub
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// composes, since its stub always fails otherwise.
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func theRuntimeIsBlamedOnlyWhereItsStubComposes(t *testing.T) {
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err := errors.New("lamp refuses")
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for _, row := range []struct {
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module string
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again error
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blamed bool
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}{
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{"lamp", nil, true},
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{"lamp", errors.New("other"), true},
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{"lamp", errors.New("lamp refuses"), false},
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{catalogue.RuntimeModule, nil, true},
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{catalogue.RuntimeModule, errors.New("node-tools is assigned to n1 and its build produced 0 bundle(s)"), false},
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{catalogue.RuntimeModule, fmt.Errorf("compose: %w", &catalogue.NoRuntimeToRunError{Held: true}), true},
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{catalogue.RuntimeModule, &catalogue.NoRuntimeToRunError{}, false},
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} {
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if got := blames(row.module, row.again, err); got != row.blamed {
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t.Errorf("%s with %v: blamed %v, want %v", row.module, row.again, got, row.blamed)
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}
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}
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}
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// Issue 774, 2026-10-30 19:30: the trunk's node-tools moved to a build not yet done, and ace, g14 and shanks composed
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// it from the indexer's manifest, which names no bundle: "its build produced 0 bundle(s)", every module refused. A
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// module that runs is now held until its build lands, the runtime composed as what runs of it; and a module wanted at
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// another build than the trunk's is composed from the build its want names.
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func aRunningModuleWaitsForItsBuild(t *testing.T) {
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dg := func(c string) string { return "sha256:" + strings.Repeat(c, 64) }
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tools := `{"module":"node-tools","version":"1","own-secrets":{"broker":"/var/lib/mesh/node-tools/broker"},` +
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`"build":{"artifacts":[{"name":"runtime","kind":"bundle","language":"go","system":"arch","from":"cmd/node-tools"}]}}`
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lamp := `{"module":"lamp","version":"1","resources":[{"id":"service","type":"service","unit":"lamp.service","state":"running","boot":"enabled"}]}`
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store := `{"module":"artifacts","version":"1","provides":[{"name":"artifact-store","scope":"mesh"}],"serves":{"artifact-store":{"port":5100}},` +
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`"receives":{"artifact-store":"/var/lib/artifacts/received.json"}}`
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old, next := "src2:"+strings.Repeat("a", 64), "src2:"+strings.Repeat("b", 64)
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running := []delivery.Composed{{Node: "n1", Module: catalogue.RuntimeModule, FP: old, Resources: []json.RawMessage{
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json.RawMessage(`{"id":"node-tools.runtime","module":"node-tools","type":"process","name":"node-tools","env":{"MESH_TOOL_MODULES":""}}`),
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json.RawMessage(`{"id":"node-tools.bundle-runtime","module":"node-tools","type":"archive","source":"artifact-store://node-tools/runtime/blobs/` +
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dg("1") + `","digest":"` + dg("1") + `","path":"` + catalogue.BundlePath("node-tools", "runtime") + `"}`)}}}
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for _, row := range []struct {
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name string
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want string // the build node-tools' want names
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done bool // the trunk's build is done
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held string // words node-tools' hold says; empty: composed
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digest string // the runtime bundle's digest composed
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}{
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{name: "the trunk's build not done yet", want: next, held: "no done build yet"},
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{name: "wanted at the build that runs, the trunk's not done", want: old, digest: dg("1")},
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{name: "the trunk's build done", want: next, done: true, digest: dg("2")},
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} {
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b, fps := aNode(t, store, tools, lamp)
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b.held = true // every grant held, so a contribution's credential stands in for nothing
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b.own = []compose.OwnSecretRow{{Node: "n1", Module: "node-tools", Name: "broker", Origin: "made", SealedTo: "sk", Sealed: `"box"`}}
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mod := b.modules["node-tools"]
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mod.FP2 = next
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b.modules["node-tools"] = mod
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b.builds["node-tools "+old] = &delivery.BuilderBuild{State: delivery.BuildDone, Manifest: mod.Manifest,
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Artifacts: []delivery.BuiltArtifact{{Name: "runtime", Kind: "bundle", Reference: "artifact-store://node-tools/runtime/blobs/" + dg("1"), Digest: dg("1")}}}
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b.builds["node-tools "+next] = &delivery.BuilderBuild{State: "building", Manifest: mod.Manifest}
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if row.done {
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b.builds["node-tools "+next] = &delivery.BuilderBuild{State: delivery.BuildDone, Manifest: mod.Manifest,
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Artifacts: []delivery.BuiltArtifact{{Name: "runtime", Kind: "bundle", Reference: "artifact-store://node-tools/runtime/blobs/" + dg("2"), Digest: dg("2")}}}
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}
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fps["node-tools"] = row.want
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out, _, held, err := Compose(context.Background(), b, Mesh{}, Scope{Node: "n1", Running: running}, fps)
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if err != nil {
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t.Errorf("%s: the node is refused: %v", row.name, err)
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continue
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}
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if lampKey, _ := delivery.ComposedKey("n1", "lamp", fps["lamp"]); out[lampKey].Module != "lamp" {
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t.Errorf("%s: lamp is not composed (held %v)", row.name, held)
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}
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if why := held["node-tools"]; (row.held == "") != (why == "") || !strings.Contains(why, row.held) {
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t.Errorf("%s: node-tools held %q, want %q", row.name, why, row.held)
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}
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if row.digest != "" {
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key, _ := delivery.ComposedKey("n1", "node-tools", row.want)
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if c := out[key]; !strings.Contains(fmt.Sprint(rawStrings(c.Resources)), row.digest) {
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t.Errorf("%s: node-tools is composed as %v, want its bundle %s", row.name, rawStrings(c.Resources), row.digest)
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}
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}
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}
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}
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func rawStrings(rs []json.RawMessage) []string {
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var out []string
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for _, r := range rs {
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out = append(out, string(r))
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}
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return out
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}
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// Issue 774: a refusal of a held module's stand-in leads with why the module was held, its first reason, as mesh-self-check's
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// on ace should have; a refusal naming no held module is as it was.
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func aHeldModulesFirstReasonLeads(t *testing.T) {
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held := map[string]string{"mesh-self-check": "mesh-self-check on ace has no bus credential: nothing was issued for ace.mesh-self-check"}
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for _, row := range []struct {
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err, want string
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}{
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{"mesh-self-check runs as its own account and declares no own secret broker",
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"mesh-self-check is held: mesh-self-check on ace has no bus credential: nothing was issued for ace.mesh-self-check; " +
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"its stand-in is then refused: mesh-self-check runs as its own account and declares no own secret broker"},
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{"ace is the hub and has no endpoint", "ace is the hub and has no endpoint"},
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} {
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err := errors.New(row.err)
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got := firstReason(err, held)
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if got.Error() != row.want || !errors.Is(got, err) {
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t.Errorf("refused %q, want %q", got, row.want)
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}
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}
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}
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// Issue 774, 2026-10-30 21:04: mesh-conditions and mesh-healers on novox and mesh-self-check on ace were placed before their
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// bus accounts were issued. Held for "needs a secret called broker and none was made", each one's bare stub was then
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// refused as "runs as its own account and declares no own secret broker", and that refusal failed every module of the
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// node (79 on novox, 74 on ace). A held module's stand-in is never refused by a rule about its own runtime or its own
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// secrets: the node composes every other module, and the held one keeps the words it was first held for.
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func aHeldModuleOfItsOwnAccountNeverRefusesTheNode(t *testing.T) {
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dg := "sha256:" + strings.Repeat("1", 64)
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tools := `{"module":"node-tools","version":"1","own-secrets":{"broker":"/var/lib/mesh/node-tools/broker"},` +
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`"build":{"artifacts":[{"name":"runtime","kind":"bundle","language":"go","system":"arch","from":"cmd/node-tools"}]}}`
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own := func(name string) string {
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return `{"module":"` + name + `","version":"1","runs-as":"` + name + `","secrets-owner":"` + name + `","tools":["status"],` +
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`"own-secrets":{"broker":"/var/lib/` + name + `/broker"},"contributes":{"artifact-store":{"name":"` + name + `"}},` +
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`"resources":[{"id":"account","type":"user","name":"` + name + `"}],` +
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`"build":{"artifacts":[{"name":"tools","kind":"bundle","language":"typescript","entrypoints":["tools/index.js"]}]}}`
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}
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lamp := `{"module":"lamp","version":"1","resources":[{"id":"service","type":"service","unit":"lamp.service","state":"running","boot":"enabled"}]}`
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store := `{"module":"artifacts","version":"1","provides":[{"name":"artifact-store","scope":"mesh"}],"serves":{"artifact-store":{"port":5100}},` +
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`"receives":{"artifact-store":"/var/lib/artifacts/received.json"}}`
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for _, row := range []struct {
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name string
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issued []string // the own-account modules whose broker is issued
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building bool // node-tools' build is not done, and nothing of it runs
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held map[string]string // the modules held, each with words of the reason it was first held for
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// ungranted gives the provider a grants file and no consumer's grant is issued yet (a newly placed module's
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// usual state): a held module's contribution then stands in for its grant, and is left out (review round 1).
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ungranted bool
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}{
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{name: "none issued", held: map[string]string{"check": "broker", "heal": "broker"}},
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{name: "none issued, no grant issued", ungranted: true, held: map[string]string{"check": "broker", "heal": "broker"}},
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{name: "one issued", issued: []string{"heal"}, held: map[string]string{"check": "broker"}},
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{name: "both issued", issued: []string{"check", "heal"}},
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// The runtime held: its stand-in is not refused for its bundle; the modules it would run are held, not the node.
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{name: "the runtime's build not done", issued: []string{"check", "heal"}, building: true,
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held: map[string]string{"node-tools": "its build produced 0 bundle(s)", "check": "not here to run it from", "heal": "not here to run it from"}},
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} {
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provider := store
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if row.ungranted {
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provider = strings.Replace(store, `"receives":`, `"grants":{"artifact-store":"/var/lib/artifacts/grants"},"receives":`, 1)
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}
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b, fps := aNode(t, provider, tools, own("check"), lamp, own("heal"))
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// Every grant held, so the held modules' contributions are composed whole; the row ungranted issues none.
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b.held = !row.ungranted
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b.own = []compose.OwnSecretRow{{Node: "n1", Module: "node-tools", Name: "broker", Origin: "made", SealedTo: "sk", Sealed: `"box"`}}
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for _, m := range row.issued {
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b.own = append(b.own, compose.OwnSecretRow{Node: "n1", Module: m, Name: "broker", Origin: "made", SealedTo: "sk", Sealed: `"box"`})
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}
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for _, m := range []string{"node-tools", "check", "heal"} {
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name := "tools"
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if m == "node-tools" {
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name = "runtime"
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}
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mod := b.modules[m]
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mod.FP2 = fps[m]
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b.modules[m] = mod
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b.builds[m+" "+fps[m]] = &delivery.BuilderBuild{State: delivery.BuildDone, Manifest: mod.Manifest,
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Artifacts: []delivery.BuiltArtifact{{Name: name, Kind: "bundle", Reference: "artifact-store://" + m + "/" + name + "/blobs/" + dg, Digest: dg}}}
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if m == "node-tools" && row.building {
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b.builds[m+" "+fps[m]] = &delivery.BuilderBuild{State: "building", Manifest: mod.Manifest}
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}
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}
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out, _, held, err := Compose(context.Background(), b, Mesh{}, Scope{Node: "n1"}, fps)
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if err != nil {
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t.Errorf("%s: the node is refused: %v", row.name, err)
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continue
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}
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// A held module keeps what it contributes (issue 774, 2026-10-31: nextcloud held for its admin secret dropped out
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// of postgres's received file, and postgres's helper would have locked its login): only its own secrets are left
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// out of its stand-in, never its contributions, so the provider's received file names every consumer.
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storeKey, _ := delivery.ComposedKey("n1", "artifacts", fps["artifacts"])
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// And never a stand-in for a grant not yet issued: the provider is applied, so a held module whose grant is
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// not issued is composed without that contribution, never with "foreseen: made by the next send".
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for key, c := range out {
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if got, _ := json.Marshal(c.Resources); strings.Contains(string(got), "foreseen") {
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t.Errorf("%s: %s applies a stand-in: %s", row.name, key, got)
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}
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}
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for _, m := range []string{"check", "heal"} {
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if row.ungranted {
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break
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}
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if got, _ := json.Marshal(out[storeKey].Resources); !strings.Contains(string(got), `\"from\": \"`+m+`\"`) {
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t.Errorf("%s: the provider's received file drops %s's contribution: %s", row.name, m, got)
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}
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}
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for _, m := range []string{"node-tools", "check", "lamp", "heal"} {
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key, _ := delivery.ComposedKey("n1", m, fps[m])
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_, composed := out[key]
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why, isHeld := held[m]
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want, wantHeld := row.held[m]
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if isHeld != wantHeld || composed == wantHeld {
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t.Errorf("%s: %s held %v (%q), composed %v; want held %v", row.name, m, isHeld, why, composed, wantHeld)
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} else if isHeld && !strings.Contains(why, want) {
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t.Errorf("%s: %s is held for %q, want its first reason, %q", row.name, m, why, want)
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}
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}
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}
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}
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