48 lines
1.0 KiB
Go
48 lines
1.0 KiB
Go
package util
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import (
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"encoding/json"
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"fmt"
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"log"
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"net/http"
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)
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// must panics if err is not nil
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func must[T any](t T, err error) T {
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if err != nil {
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panic(err)
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}
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return t
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}
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// attempt discards the value from a (value, err) function
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func attempt[T any](_ T, err error) error {
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return err
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}
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// try discards the error from a (value, err) function
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func try[T any](t T, _ error) T {
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return t
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}
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// writeJSON encodes the provided value as json and responds 200
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func writeJSON(w http.ResponseWriter, v any) {
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w.Header().Set("Content-Type", "application/json")
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if err := json.NewEncoder(w).Encode(v); err != nil {
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log.Printf("writeJSON error: %v", err)
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}
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}
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// writeError logs and responds with the given formatted error message as `{"error": msg}`
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func writeError(w http.ResponseWriter, code int, msg string, args ...any) {
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errMsg := fmt.Sprintf(msg, args...)
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log.Println(errMsg)
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w.Header().Set("Content-Type", "application/json")
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w.WriteHeader(code)
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json.NewEncoder(w).Encode(struct {
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Error string `json:"error"`
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}{
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Error: errMsg,
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})
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}
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