31 lines
803 B
Go
31 lines
803 B
Go
package httpx
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import (
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"encoding/json"
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"net/http"
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)
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// JSON creates a new JSONHandler
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func JSON[T any](f func(r *http.Request) (T, error)) JSONHandler[T] {
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return JSONHandler[T](f)
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}
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// JSONHandler implements [http.Handler] by returning values as json to the caller.
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// In case of an error, a generic "internal server error" message is returned.
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type JSONHandler[T any] func(r *http.Request) (T, error)
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// ServeHTTP calls j(r) and returns json
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func (j JSONHandler[T]) ServeHTTP(w http.ResponseWriter, r *http.Request) {
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// call the function
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result, err := j(r)
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// handle any errors
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if jsonInterceptor.Intercept(w, r, err) {
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return
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}
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// write out the response as json
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w.Header().Set("Content-Type", "application/json")
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w.WriteHeader(http.StatusOK)
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json.NewEncoder(w).Encode(result)
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}
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