SMP OData accesses WS How to pass identity information

Principle:
When the browser or Kepsel invokes the OData service, it takes its own authentication information and passes it to the WS service behind.

Unction processrequestdata (message) {

importpackage (com.sap.gateway.ip.core.customdev.util);
Importpackage (java.util);
Importpackage (com.sap.gateway.core.ip.component.commons);
Importpackage (com.sap.gateway.ip.core.customdev.logging);
Importpackage (org.apache.olingo.odata2.api.processor);

var headers = message.getheaders ();
var context = Headers.get ("Odatacontext");
var request = Context.getparameter ("~httprequestobject");
var Auth = Request.getheader ("Authorization");

if (auth!=null)
message.setheader ("Authorization", Auth);

return message;

}

Reference:
Enabling user authentication propagation for Web services (exposed as OData services) using custom processor.