Files
mesh-sdk/go/catalogue/bus_snapshot_test.go
T
jschoubben 59311407e2 One bad module must not drop its node: plans are composed module by module, a foreseen own secret fills a file, a built bus manifest keeps its bundle (issue 774)
PlansHeld holds a module whose build cannot be taken in or whose plan refuses, by composeEach's rule, and composes
every other module's plan; sealedFor gives a file the stand-in its own secret's file has (baserow on ace); shipsABundle
reads a built manifest's Bundles (nats on novox).
2026-10-30 17:50:56 +01:00

96 lines
3.7 KiB
Go

package catalogue
import (
"encoding/json"
"os"
"path/filepath"
"strings"
"testing"
"git.novox.be/novox/mesh-sdk/go/internal/beside"
)
// The module holding mesh-broker is the bus, and its account is granted the bus's snapshot API and
// nothing else (novox/hq ADR 0235). Anything it declared to say or hear on the bus would be granted
// nothing, so it is refused at the parser rather than silently dropped.
func TestTheBussAccountSaysNothingOnTheBus(t *testing.T) {
raw := []byte(`{"module":"bus","version":"1","provides":[{"name":"mesh-bus","scope":"mesh"}],
"claims":[{"name":"mesh-broker","scope":"mesh"}],"own-secrets":{"broker":"/run/broker"},
"emits":["something.happened"]}`)
_, err := ParseManifest(raw)
if err == nil || !strings.Contains(err.Error(), "granted the bus's snapshot API and nothing else") {
t.Fatalf("a bus module declaring what it emits was not refused, or not for the reason: %v", err)
}
// Its tools bundle says what it emits (novox/hq ADR 0357): the node's runtime carries the bundle and is
// granted the module's events, so a bus module that ships one may declare them.
bundled := []byte(`{"module":"bus","version":"1","provides":[{"name":"mesh-bus","scope":"mesh"}],
"claims":[{"name":"mesh-broker","scope":"mesh"}],"own-secrets":{"broker":"/run/broker"},
"emits":["bus.slow-consumer"],"tools":["bus_streams"],
"build":{"artifacts":[{"name":"tools","kind":"bundle","language":"go","system":"arch","from":"cmd/t","binary":"t"}]}}`)
m, err := ParseManifest(bundled)
if err != nil {
t.Fatalf("a bus module whose tools bundle declares what it emits was refused: %v", err)
}
// And so does its built manifest, its bundle in Bundles and its build read away (issue 774: nats's built manifest
// was refused, and with it every plan of the control-node).
built, err := m.Resolve([]Built{{Name: "tools", Kind: ArtifactBundle, Reference: "store/tools:1", Digest: "sha256:1"}})
if err != nil {
t.Fatal(err)
}
raw, err = json.Marshal(built)
if err != nil {
t.Fatal(err)
}
if _, err := ParseManifestForInputs(raw); err != nil {
t.Fatalf("the built manifest of a bus module whose tools bundle declares what it emits was refused: %v", err)
}
quiet := []byte(`{"module":"bus","version":"1","provides":[{"name":"mesh-bus","scope":"mesh"}],
"claims":[{"name":"mesh-broker","scope":"mesh"}],"own-secrets":{"broker":"/run/broker"},
"tools":["bus_streams"]}`)
m, err = ParseManifest(quiet)
if err != nil {
t.Fatalf("a bus module with an account and tools was refused: %v", err)
}
if !m.ClaimsSeat(BrokerSeat) {
t.Fatal("it does not read as holding the broker seat")
}
}
// The catalogue's bus protects its streams by the snapshot, not as live files: its streams' item is a
// dump into its snapshots, it has the account the dump runs as, and the dump runs the snapshot
// program in the bus's own container.
func TestTheCataloguesBusIsBackedUpBySnapshot(t *testing.T) {
raw, err := os.ReadFile(filepath.Join(beside.Catalogue(t), "nats", "module.json"))
if err != nil {
t.Fatal(err)
}
m, err := ParseManifest(raw)
if err != nil {
t.Fatal(err)
}
if _, account := m.OwnSecrets["broker"]; !account {
t.Fatal("the bus declares no account, so its snapshot could not reach it")
}
var found bool
if m.Data == nil {
t.Fatal("the bus declares no data")
}
for _, it := range m.Data.Own {
if it.ID != "jetstream" {
continue
}
found = true
if !it.Backup.IsDump() || it.Backup.Into != "snapshots" {
t.Fatalf("the bus's streams are protected by %+v, not a snapshot into its snapshots", it.Backup)
}
if !strings.Contains(it.Backup.Dump, "mesh-nats-snapshot snapshot") {
t.Fatalf("the dump does not run the snapshot program: %s", it.Backup.Dump)
}
}
if !found {
t.Fatal("the bus declares no item for its streams")
}
}