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package fetcher
import (
"encoding/base64"
"fmt"
"net/http"
"net/url"
"strings"
)
type AuthenticationConfiguration struct {
AuthenticationType string
AuthenticationValue string
}
func ApplyAuthentication(request *http.Request, authenticationConfig AuthenticationConfiguration) error {
switch authenticationConfig.AuthenticationType {
case "bearer":
request.Header.Set("Authorization", "Bearer "+authenticationConfig.AuthenticationValue)
case "basic":
encodedCredentials := base64.StdEncoding.EncodeToString([]byte(authenticationConfig.AuthenticationValue))
request.Header.Set("Authorization", "Basic "+encodedCredentials)
case "query_param":
parts := strings.SplitN(authenticationConfig.AuthenticationValue, "=", 2)
if len(parts) != 2 {
return fmt.Errorf("query_param credential must be in format 'param_name=value', got: %s", authenticationConfig.AuthenticationValue)
}
existingURL, parseError := url.Parse(request.URL.String())
if parseError != nil {
return fmt.Errorf("failed to parse request URL for query param authentication: %w", parseError)
}
queryParameters := existingURL.Query()
queryParameters.Set(parts[0], parts[1])
existingURL.RawQuery = queryParameters.Encode()
request.URL = existingURL
case "":
return nil
default:
return fmt.Errorf("unsupported authentication type: %s", authenticationConfig.AuthenticationType)
}
return nil
}
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