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package upload
import (
"fmt"
"mime/multipart"
"net/http"
"gitlab.com/gitlab-org/gitlab-workhorse/internal/secret"
"github.com/dgrijalva/jwt-go"
)
const RewrittenFieldsHeader = "Gitlab-Workhorse-Multipart-Fields"
type savedFileTracker struct {
request *http.Request
rewrittenFields map[string]string
}
type MultipartClaims struct {
RewrittenFields map[string]string `json:"rewritten_fields"`
jwt.StandardClaims
}
func Accelerate(tempDir string, h http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
s := &savedFileTracker{request: r}
HandleFileUploads(w, r, h, tempDir, s)
})
}
func (s *savedFileTracker) ProcessFile(fieldName, fileName string, _ *multipart.Writer) error {
if s.rewrittenFields == nil {
s.rewrittenFields = make(map[string]string)
}
s.rewrittenFields[fieldName] = fileName
return nil
}
func (_ *savedFileTracker) ProcessField(_ string, _ *multipart.Writer) error {
return nil
}
func (s *savedFileTracker) Finalize() error {
if s.rewrittenFields == nil {
return nil
}
claims := MultipartClaims{s.rewrittenFields, secret.DefaultClaims}
tokenString, err := secret.JWTTokenString(claims)
if err != nil {
return fmt.Errorf("savedFileTracker.Finalize: %v", err)
}
s.request.Header.Set(RewrittenFieldsHeader, tokenString)
return nil
}
func (a *savedFileTracker) Name() string {
return "accelerate"
}
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