47 lines
1.1 KiB
Go
47 lines
1.1 KiB
Go
package events
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import (
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"encoding/json"
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"fmt"
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"net/http"
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"github.com/tigorlazuardi/redmage/pkg/log"
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)
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func (handler *Handler) SimpleDownloadEvent(rw http.ResponseWriter, r *http.Request) {
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ctx, span := tracer.Start(r.Context(), "*Routes.EventsAPI")
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defer span.End()
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flush, ok := rw.(http.Flusher)
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if !ok {
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rw.WriteHeader(http.StatusInternalServerError)
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_ = json.NewEncoder(rw).Encode(map[string]string{"error": "response writer does not support streaming"})
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return
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}
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log.New(ctx).Info("new simple event stream connection", "user_agent", r.UserAgent())
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rw.Header().Set("Content-Type", "text/event-stream")
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rw.Header().Set("Cache-Control", "no-cache")
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rw.Header().Set("Connection", "keep-alive")
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rw.WriteHeader(200)
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flush.Flush()
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ev, close := handler.Subscribe()
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defer close()
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for {
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select {
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case <-r.Context().Done():
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log.New(ctx).Info("simple event stream connection closed", "user_agent", r.UserAgent())
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return
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case event := <-ev:
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msg := event.Event()
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if _, err := fmt.Fprintf(rw, "event: %s\ndata: %s\n\n", msg, msg); err != nil {
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return
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}
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flush.Flush()
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}
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}
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}
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