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feat: sync interview content in real time

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Publish shared-document and note events through RabbitMQ, stream token-scoped document updates to participants, and update connected interviewer and participant browsers through resilient SSE subscriptions.

Add snapshots, heartbeats, reconnection behavior, proxy streaming configuration, privacy filtering, and end-to-end RabbitMQ coverage.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
This commit is contained in:
Daniel Noulet 2026-09-19 22:22:42 +02:00
parent e4fee06e2f
commit c050815900
16 changed files with 438 additions and 101 deletions
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28
backend/internal/web/handler/handler.go
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@ -15,6 +15,7 @@ import (
"github.com/go-chi/chi/v5"
"github.com/danyel/go-guess/backend/internal/database/repository"
"github.com/danyel/go-guess/backend/internal/eventbus"
"github.com/danyel/go-guess/backend/internal/security"
"github.com/danyel/go-guess/backend/internal/service"
servicemodel "github.com/danyel/go-guess/backend/internal/service/model"
@ -511,6 +512,20 @@ func (h *Handler) InterviewEvents(w http.ResponseWriter, r *http.Request) {
if handleServiceError(w, r, err) {
return
}
streamInterviewEvents(w, r, events)
}
func (h *Handler) ParticipantMeetingEvents(w http.ResponseWriter, r *http.Request) {
events, err := h.interviews.SubscribeParticipant(r.Context(), chi.URLParam(r, "token"))
if handleServiceError(w, r, err) {
return
}
streamInterviewEvents(w, r, events)
}
func streamInterviewEvents(
w http.ResponseWriter, r *http.Request, events <-chan eventbus.InterviewEvent,
) {
flusher, ok := w.(http.Flusher)
if !ok {
internalError(w, r, errors.New("streaming is unsupported"))
@ -519,24 +534,29 @@ func (h *Handler) InterviewEvents(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "text/event-stream")
w.Header().Set("Cache-Control", "no-cache")
w.Header().Set("Connection", "keep-alive")
w.Header().Set("X-Accel-Buffering", "no")
w.WriteHeader(http.StatusOK)
flusher.Flush()
heartbeat := time.NewTicker(20 * time.Second)
defer heartbeat.Stop()
for {
select {
case <-r.Context().Done():
return
case <-heartbeat.C:
if _, err := io.WriteString(w, ": keepalive\n\n"); err != nil {
return
}
flusher.Flush()
case event, ok := <-events:
if !ok {
return
}
if event.InterviewID != idParam(r) {
continue
}
payload, err := json.Marshal(event)
if err != nil {
return
}
if _, err := fmt.Fprintf(w, "event: interview-note\ndata: %s\n\n", payload); err != nil {
if _, err := fmt.Fprintf(w, "event: interview-event\ndata: %s\n\n", payload); err != nil {
return
}
flusher.Flush()