Files
mesh-sdk/go/buscompose/creates_streams_test.go
T
jschoubben d515c71e1c process: a bucket missing at a part's start is bound when the bus says it was created, keeping what was written meanwhile; buscompose grants each principal the creation of the buckets it may bind (issue 1790)
Since the grants part creates a manifest's buckets after a delivery (ADR 0547), a module restarted by that
delivery can open a new state before it exists; OptionalBucket answered nil and the part never looked again
(mesh-delivery's checker and builder, state hearing, 2026-10-26). AwaitBucket binds on the server's
STREAM.CREATED advisory, or at the next use, and writes the latest value kept per key. The copied composer's
agreement test leaves that one row out: the controller's list is no longer loaded since the take-over.
2026-10-26 15:11:00 +01:00

131 lines
7.2 KiB
Go

package buscompose
import "testing"
// Defends issue 1790 and novox/hq ADR 0547 §5 (the operator, 2026-10-26 08:54): the grants part may create the stream
// of each bucket, log and stream a placed module's manifest declares, by its own name, and read it back; nothing
// wider, nothing updated or deleted, and no other principal so. Held byte-equal in the controller's copy. And ADR 0547
// clause 7 (issue 1945, the operator's second exception): the grants part writes its own object bucket of sealed user
// lists, and the node-engine of the node holding mesh-broker alone reads its one key and an object of it by name.
func TestTheGrantsPartCreatesOnlyDeclaredStreams(t *testing.T) {
records := Records{
Nodes: []string{"novox", "ace"},
Assigned: map[string][]Declared{"ace": {{Module: "plex"}}, "novox": {
{Module: "nats", SnapshotsTheBus: true},
// mesh-sdk's copy alone (ADR 0547 clause 9, named readers): the vault's hashes are read by the grants part
// alone, whatever another module's reads say; the controller's copy grants any module that declares it.
{Module: "mesh-vault", State: []Bucket{{Module: "mesh-vault", Name: "bus-accounts"}}},
{Module: "spy", Serves: []string{"spy_x"}, Reads: []string{VaultBusAccounts}},
{Module: "mesh-delivery-builder",
State: []Bucket{{Module: "mesh-delivery-builder", Name: "steps", History: 5}},
Logs: []Log{{Module: "mesh-delivery-builder", Name: "builds"}},
Streams: []ModuleStream{{Module: "mesh-delivery-builder", Name: "BUILDASKS", Events: []string{"ask"}}}},
{Module: GrantsModule, State: []Bucket{{Module: GrantsModule, Name: "assertions"}}, Reads: []string{VaultBusAccounts}},
{Module: RuntimeModule},
}},
}
users, err := Users(records)
if err != nil {
t.Fatal(err)
}
perms := map[string]Permissions{}
for _, u := range users {
if u.Kind == KindNode || u.Kind == KindNodeTools {
p, err := PermissionsFor(u)
if err != nil {
t.Fatalf("%s: %v", u.Username(), err)
}
perms[u.Username()] = p
continue
}
if u.Kind != KindModule {
continue
}
p, err := PermissionsFor(u)
if err != nil {
t.Fatalf("%s: %v", u.Username(), err)
}
perms[u.Module] = p
}
for _, row := range []struct {
who, subject string
may bool
}{
{GrantsModule, "$JS.API.STREAM.CREATE.KV_mesh-delivery-builder_steps", true},
{GrantsModule, "$JS.API.STREAM.INFO.KV_mesh-delivery-builder_steps", true},
{GrantsModule, "$JS.API.STREAM.CREATE.LOG_mesh-delivery-builder_builds", true},
{GrantsModule, "$JS.API.STREAM.CREATE.BUILDASKS", true},
{GrantsModule, "$JS.API.STREAM.CREATE.KV_mesh-grants_assertions", true},
{GrantsModule, "$JS.API.STREAM.UPDATE.KV_mesh-delivery-builder_steps", false},
{GrantsModule, "$JS.API.STREAM.DELETE.KV_mesh-delivery-builder_steps", false},
{GrantsModule, "$JS.API.STREAM.PURGE.KV_mesh-delivery-builder_steps", false},
{GrantsModule, "$JS.API.STREAM.CREATE.KV_mesh-delivery-builder_undeclared", false},
{GrantsModule, "$JS.API.STREAM.CREATE.EVENTS", false},
{GrantsModule, "$JS.API.STREAM.CREATE.ASSIGNMENTS", false},
{GrantsModule, "$JS.API.STREAM.INFO.EVENTS", false},
{"mesh-delivery-builder", "$JS.API.STREAM.CREATE.KV_mesh-delivery-builder_steps", false},
// The sealed user list (ADR 0547 clause 7): the grants part writes its own bucket and no other.
{GrantsModule, "$JS.API.STREAM.CREATE.OBJ_mesh-grants-user-list", true},
{GrantsModule, "$O.mesh-grants-user-list.C.abc", true},
{GrantsModule, "$JS.API.STREAM.PURGE.OBJ_mesh-grants-user-list", true},
{GrantsModule, "$O.declaration-files-novox.C.abc", false},
{GrantsModule, "$JS.API.STREAM.DELETE.OBJ_mesh-grants-user-list", false},
{"mesh-delivery-builder", "$O.mesh-grants-user-list.C.abc", false},
// The bus node's engine reads the one key and an object by name; nothing of the bucket's list, no write.
{"node.novox", "$JS.API.DIRECT.GET.KV_mesh-grants_user-list.$KV.mesh-grants_user-list.sealed", true},
{"node.novox", "$JS.API.CONSUMER.CREATE.KV_mesh-grants_user-list.abc.$KV.mesh-grants_user-list.sealed", true},
{"node.novox", "$JS.API.DIRECT.GET.OBJ_mesh-grants-user-list.$O.mesh-grants-user-list.M.abc", true},
{"node.novox", "$JS.API.CONSUMER.CREATE.OBJ_mesh-grants-user-list.abc.$O.mesh-grants-user-list.C.abc", true},
{"node.novox", "$JS.API.DIRECT.GET.KV_mesh-grants_user-list.$KV.mesh-grants_user-list.list", false},
{"node.novox", "$JS.API.STREAM.INFO.OBJ_mesh-grants-user-list", false},
{"node.novox", "$JS.API.STREAM.MSG.GET.OBJ_mesh-grants-user-list", false},
{"node.novox", "$O.mesh-grants-user-list.C.abc", false},
{"node.ace", "$JS.API.DIRECT.GET.KV_mesh-grants_user-list.$KV.mesh-grants_user-list.sealed", false},
{"node.ace", "$JS.API.DIRECT.GET.OBJ_mesh-grants-user-list.$O.mesh-grants-user-list.M.abc", false},
{GrantsModule, "$JS.API.DIRECT.GET.KV_mesh-vault_bus-accounts.$KV.mesh-vault_bus-accounts.x", true},
{"spy", "$JS.API.DIRECT.GET.KV_mesh-vault_bus-accounts.$KV.mesh-vault_bus-accounts.x", false},
{"novox.node-tools", "$JS.API.DIRECT.GET.KV_mesh-vault_bus-accounts.$KV.mesh-vault_bus-accounts.x", false},
} {
if got := MayPublish(perms[row.who], row.subject); got != row.may {
t.Errorf("%s may publish %s: %v, want %v", row.who, row.subject, got, row.may)
}
}
// Issue 1790 (2026-10-26): a module hears the bus create each bucket it may bind, its own and those it reads, so a
// state missing at its start is bound when it appears; no other bucket's, and no other advisory.
for _, row := range []struct {
who, subject string
may bool
}{
{"mesh-delivery-builder", "$JS.EVENT.ADVISORY.STREAM.CREATED.KV_mesh-delivery-builder_steps", true},
{GrantsModule, "$JS.EVENT.ADVISORY.STREAM.CREATED.KV_mesh-vault_bus-accounts", true},
{"mesh-delivery-builder", "$JS.EVENT.ADVISORY.STREAM.CREATED.KV_mesh-grants_assertions", false},
{"mesh-delivery-builder", "$JS.EVENT.ADVISORY.STREAM.CREATED.LOG_mesh-delivery-builder_builds", false},
{"mesh-delivery-builder", "$JS.EVENT.ADVISORY.STREAM.DELETED.KV_mesh-delivery-builder_steps", false},
} {
if got := MaySubscribe(perms[row.who], row.subject); got != row.may {
t.Errorf("%s may hear %s: %v, want %v", row.who, row.subject, got, row.may)
}
}
// A name that is no plain token is never granted, and a module other than the grants part is never granted one.
if got := CreateStreamGrants([]string{"*", ">", "KV_a.b", "KV_a_b"}); len(got) != 2 {
t.Errorf("grants for wildcard names: %v", got)
}
other, err := PermissionsFor(Principal{Kind: KindModule, Node: "novox", Module: "shop", CreatesStreams: []string{"KV_shop_x"}})
if err != nil {
t.Fatal(err)
}
if MayPublish(other, "$JS.API.STREAM.CREATE.KV_shop_x") {
t.Error("a module other than the grants part was granted a create")
}
// The writers table refuses the grants part an update, and a create of a stream it was not given.
g := Principal{Kind: KindModule, Node: "novox", Module: GrantsModule, CreatesStreams: []string{"KV_a_b"}}
if err := CheckWriters(g, []string{"$JS.API.STREAM.CREATE.KV_a_b"}); err != nil {
t.Errorf("the declared create refused: %v", err)
}
for _, refused := range []string{"$JS.API.STREAM.UPDATE.KV_a_b", "$JS.API.STREAM.CREATE.KV_a_c", "$JS.API.STREAM.CREATE.*"} {
if CheckWriters(g, []string{refused}) == nil {
t.Errorf("%s was not refused", refused)
}
}
}