jochen
fd9308d328
mesh/delivery-group group fix/270-the-bus-module-says-every-users-slow-consumer rejected: a member's own check failed
mesh/merge-gate head fd9308d3287e merged into trunk 3479a35462b2 — pass: builds build-agent, mesh-controller → ace, g14, novox, shanks; no bus step; every …
mesh/repo-check head fd9308d3287e merged into trunk 3479a35462b2 — pass: its merge-check.sh passed
mesh/delivery superseded: a newer head of the same pull request
The controller heard a slow consumer only on its own connection: the server says another user's only in its record of closed connections. The bus module now says that record as events; the watchdogs read the last hour back on every tick and raise one condition per user and kind, naming the module and machine. The module check lets the bus module emit, since its tool runner publishes.
81 lines
3.2 KiB
Go
81 lines
3.2 KiB
Go
package catalogue
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import (
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"os"
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"path/filepath"
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"strings"
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"testing"
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"github.com/novox/mesh-controller/internal/beside"
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)
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// The module holding mesh-broker is the bus, and its account is granted the bus's snapshot API and
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// nothing else (novox/hq ADR 0235). Anything it declared to say or hear on the bus would be granted
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// nothing, so it is refused at the parser rather than silently dropped.
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func TestTheBussAccountSaysNothingOnTheBus(t *testing.T) {
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raw := []byte(`{"module":"bus","version":"1","provides":[{"name":"mesh-bus","scope":"mesh"}],
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"claims":[{"name":"mesh-broker","scope":"mesh"}],"own-secrets":{"broker":"/run/broker"},
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"emits":["something.happened"]}`)
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_, err := ParseManifest(raw)
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if err == nil || !strings.Contains(err.Error(), "granted the bus's snapshot API and nothing else") {
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t.Fatalf("a bus module declaring what it emits was not refused, or not for the reason: %v", err)
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}
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// Its tools bundle says what it emits (novox/hq ADR 0357): the node's runtime carries the bundle and is
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// granted the module's events, so a bus module that ships one may declare them.
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bundled := []byte(`{"module":"bus","version":"1","provides":[{"name":"mesh-bus","scope":"mesh"}],
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"claims":[{"name":"mesh-broker","scope":"mesh"}],"own-secrets":{"broker":"/run/broker"},
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"emits":["bus.slow-consumer"],"tools":["bus_streams"],
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"build":{"artifacts":[{"name":"tools","kind":"bundle","language":"go","system":"arch","from":"cmd/t","binary":"t"}]}}`)
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if _, err := ParseManifest(bundled); err != nil {
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t.Fatalf("a bus module whose tools bundle declares what it emits was refused: %v", err)
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}
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quiet := []byte(`{"module":"bus","version":"1","provides":[{"name":"mesh-bus","scope":"mesh"}],
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"claims":[{"name":"mesh-broker","scope":"mesh"}],"own-secrets":{"broker":"/run/broker"},
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"tools":["bus_streams"]}`)
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m, err := ParseManifest(quiet)
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if err != nil {
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t.Fatalf("a bus module with an account and tools was refused: %v", err)
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}
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if !m.ClaimsSeat(BrokerSeat) {
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t.Fatal("it does not read as holding the broker seat")
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}
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}
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// The catalogue's bus protects its streams by the snapshot, not as live files: its streams' item is a
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// dump into its snapshots, it has the account the dump runs as, and the dump runs the snapshot
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// program in the bus's own container.
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func TestTheCataloguesBusIsBackedUpBySnapshot(t *testing.T) {
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raw, err := os.ReadFile(filepath.Join(beside.Catalogue(t), "nats", "module.json"))
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if err != nil {
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t.Fatal(err)
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}
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m, err := ParseManifest(raw)
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if err != nil {
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t.Fatal(err)
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}
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if _, account := m.OwnSecrets["broker"]; !account {
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t.Fatal("the bus declares no account, so its snapshot could not reach it")
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}
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var found bool
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if m.Data == nil {
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t.Fatal("the bus declares no data")
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}
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for _, it := range m.Data.Own {
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if it.ID != "jetstream" {
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continue
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}
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found = true
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if !it.Backup.IsDump() || it.Backup.Into != "snapshots" {
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t.Fatalf("the bus's streams are protected by %+v, not a snapshot into its snapshots", it.Backup)
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}
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if !strings.Contains(it.Backup.Dump, "mesh-nats-snapshot snapshot") {
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t.Fatalf("the dump does not run the snapshot program: %s", it.Backup.Dump)
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}
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}
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if !found {
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t.Fatal("the bus declares no item for its streams")
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}
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}
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