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18 lines
448 B
18 lines
448 B
4 years ago
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package middleware
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import (
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"context"
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"net/http"
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)
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// WithValue is a middleware that sets a given key/value in a context chain.
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func WithValue(key interface{}, val interface{}) func(next http.Handler) http.Handler {
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return func(next http.Handler) http.Handler {
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fn := func(w http.ResponseWriter, r *http.Request) {
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r = r.WithContext(context.WithValue(r.Context(), key, val))
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next.ServeHTTP(w, r)
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}
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return http.HandlerFunc(fn)
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}
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}
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