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package middleware
import (
"net/http"
"time"
)
// Sunset set Deprecation/Sunset header to response
// This can be used to enable Sunset in a route or a route group
// For more: https://www.rfc-editor.org/rfc/rfc8594.html
func Sunset(sunsetAt time.Time, links ...string) func(http.Handler) http.Handler {
return func(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if !sunsetAt.IsZero() {
w.Header().Set("Sunset", sunsetAt.Format(http.TimeFormat))
w.Header().Set("Deprecation", sunsetAt.Format(http.TimeFormat))
for _, link := range links {
w.Header().Add("Link", link)
}
}
next.ServeHTTP(w, r)
})
}
}
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