jochen
ee13e75bf3
mesh-mail's events must live on a stream of their own and reach only the modules the operator granted an account (ADR 0359 §2, §4). The controller now creates a module's declared stream, publishes its events on mesh.stream.<module>.event.<event>, and composes a consumer's durable consumer, filters and bus grants on a restricted stream only where its consumes asks and the provider's trusted value names it; a consumer that loses its grant has its consumer removed on the next assertion. Nothing changes while no manifest declares a stream.
63 lines
2.1 KiB
Go
63 lines
2.1 KiB
Go
package broker
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import (
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"slices"
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"testing"
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"time"
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"github.com/novox/mesh-controller/internal/testbus"
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)
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// On a real bus: a module's stream is made beside EVENTS without a clash, keeps what the module publishes on
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// its own subjects, a granted consumer hears only its part, a narrowed grant narrows it, and a withdrawn one
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// is removed (novox/hq ADR 0363).
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//
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// go test ./internal/broker/ -run TestAModuleStreamOnARealBus
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func TestAModuleStreamOnARealBus(t *testing.T) {
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js, err := Dial(testbus.URL(t))
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if err != nil {
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t.Fatal(err)
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}
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defer js.Close()
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for _, s := range []Stream{MeshStreams()[3], mailStream.Stream()} {
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_ = js.js.DeleteStream(s.Name)
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if err := js.EnsureStream(s); err != nil {
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t.Fatalf("%s: %v", s.Name, err)
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}
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defer func(name string) { _ = js.js.DeleteStream(name) }(s.Name)
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}
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for _, account := range []string{"mesh", "work"} {
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if _, err := js.js.Publish(ModuleStreamSubject("mesh-mail", "mail."+account+".message.added"), []byte("{}")); err != nil {
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t.Fatalf("publishing %s's mail: %v", account, err)
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}
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}
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if info, _ := js.js.StreamInfo(EventsStream); info.State.Msgs != 0 {
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t.Fatalf("EVENTS kept %d of the module stream's events", info.State.Msgs)
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}
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reader := Principal{Kind: KindModule, Node: "ace", Module: "reader", Hears: []Heard{mailHeard}}
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c := heardConsumer(reader, mailHeard)
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if err := js.EnsureConsumer(c); err != nil {
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t.Fatal(err)
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}
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time.Sleep(50 * time.Millisecond)
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if info, _ := js.js.ConsumerInfo("MAIL", c.Name); info.NumPending != 1 {
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t.Fatalf("the reader granted `mesh` has %d pending, want 1", info.NumPending)
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}
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narrowed := c
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narrowed.Filters = []string{"mesh.stream.mesh-mail.event.mail.mesh.message.changed"}
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if err := js.EnsureConsumer(narrowed); err != nil {
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t.Fatalf("narrowing the grant: %v", err)
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}
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removed, err := PruneHeard(js, []ModuleStream{mailStream}, nil)
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if err != nil {
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t.Fatal(err)
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}
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if !slices.Equal(removed, []string{"MAIL/ace_reader"}) {
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t.Fatalf("removed %v", removed)
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}
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if names, _ := js.ConsumerNames("MAIL"); len(names) != 0 {
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t.Fatalf("still on MAIL: %v", names)
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}
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}
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