36 lines
762 B
Go
36 lines
762 B
Go
package middlewares
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import (
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"context"
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"net/http"
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)
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// AddPrefix is a middleware used to add prefix to an URL request
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type AddPrefix struct {
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Handler http.Handler
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Prefix string
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}
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type key string
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const (
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// AddPrefixKey is the key within the request context used to
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// store the added prefix
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AddPrefixKey key = "AddPrefix"
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)
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func (s *AddPrefix) ServeHTTP(w http.ResponseWriter, r *http.Request) {
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r.URL.Path = s.Prefix + r.URL.Path
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if r.URL.RawPath != "" {
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r.URL.RawPath = s.Prefix + r.URL.RawPath
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}
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r.RequestURI = r.URL.RequestURI()
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r = r.WithContext(context.WithValue(r.Context(), AddPrefixKey, s.Prefix))
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s.Handler.ServeHTTP(w, r)
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}
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// SetHandler sets handler
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func (s *AddPrefix) SetHandler(Handler http.Handler) {
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s.Handler = Handler
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}
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