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token.go
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token.go
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package token
import (
"fmt"
"net/http"
"github.com/alexfalkowski/go-service/security/header"
"github.com/alexfalkowski/go-service/security/token"
)
// NewRoundTripper for token.
func NewRoundTripper(gen token.Generator, hrt http.RoundTripper) *RoundTripper {
return &RoundTripper{gen: gen, RoundTripper: hrt}
}
// RoundTripper for token.
type RoundTripper struct {
gen token.Generator
http.RoundTripper
}
func (r *RoundTripper) RoundTrip(req *http.Request) (*http.Response, error) {
ctx, t, err := r.gen.Generate(req.Context())
if err != nil {
return nil, err
}
if len(t) == 0 {
return nil, header.ErrInvalidAuthorization
}
req = req.WithContext(ctx)
req.Header.Add("Authorization", fmt.Sprintf("%s %s", header.BearerAuthorization, string(t)))
return r.RoundTripper.RoundTrip(req)
}