jschoubben
cdc6e1f521
A holder says a held call's end on its seat's gated-ended, kept last per subject for a day in SEAT_<seat>_gated-ended, which the grants part makes from the definition seatdef.Resolve gives (A-264). The caller is granted hearing gated-ended.<caller>.> under its own escaped account name, and an ordered consumer on that stream filtered to it, from its invokes of the marked verb by name; a module or process that answers a marked verb is granted saying the event to any caller. No process of mesh-delivery holds a marked verb, so no holder here takes NewGateChannel. Builds: design 47 G §677, §700, A-264, A-273 Claude-Session: https://claude.ai/code/session_01NcbgfGKaxw984XyAPfLm4h
55 lines
2.3 KiB
Go
55 lines
2.3 KiB
Go
package buscompose
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import (
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"slices"
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"strings"
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"git.novox.be/novox/mesh-sdk/go/keys"
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"git.novox.be/novox/mesh-sdk/go/seatdef"
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)
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// **A held call's end is heard by its caller alone** (design 47 G §677; lead answer A-264): a holder says the end of a call of
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// a marked verb on its seat's event `gated-ended`, subject `mesh.seat.<seat>.event.gated-ended.<caller>.<call>`, `<caller>` the
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// account the bus proved escaped as a key's name is, kept last per subject for a day in the stream SEAT_<seat>_gated-ended
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// (KeptEventsOf, from the definition seatdef.Resolve gives). The caller is granted hearing `gated-ended.<caller>.>` and no other
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// caller's, from its invokes of the marked verb by name; it reads the stream through an ordered consumer filtered to its own
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// subjects (mesh-sdk process awaitGated), made for the read. A process that answers a marked verb says the event to any caller.
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// gatedEndedGrants are the grants of the principal user from the marked verbs (`seat:<seat>.<verb>`) it invokes by name and
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// those it answers.
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func gatedEndedGrants(user string, marked, invokes, answers []string) (pub, sub []string) {
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caller := keys.EscapeName(user)
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if user == "" {
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return nil, nil
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}
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var heard, said []string
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for _, v := range marked {
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seat, _, ok := strings.Cut(strings.TrimPrefix(v, "seat:"), ".")
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if !ok || !safeSubject.MatchString(seat) {
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continue
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}
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if slices.Contains(invokes, v) {
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heard = append(heard, seat)
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}
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if slices.Contains(answers, v) {
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said = append(said, seat)
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}
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}
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for _, seat := range unique(heard) {
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stream := seatdef.KeptStream(seat, seatdef.Message{Name: seatdef.GatedEndedEvent})
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own := GatedEndedSubject(seat, caller) + ".>"
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sub = append(sub, own)
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pub = append(pub, "$JS.API.STREAM.INFO."+stream, "$JS.API.CONSUMER.CREATE."+stream+".*."+own,
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"$JS.API.CONSUMER.MSG.NEXT."+stream+".*", "$JS.API.CONSUMER.INFO."+stream+".*", "$JS.API.CONSUMER.DELETE."+stream+".*")
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}
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for _, seat := range unique(said) {
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pub = append(pub, GatedEndedSubject(seat, "*")+".*")
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}
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return pub, sub
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}
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// GatedEndedSubject is the subject of the seat's gated-ended for one caller, its escaped name (keys.EscapeName) or `*`.
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func GatedEndedSubject(seat, caller string) string {
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return seatdef.EventSubject(seat, seatdef.GatedEndedEvent) + "." + caller
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}
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