ac2 - no exception throw on augment subject if user not found

projects/cadcAccessControl/src/ca/nrc/cadc/ac/client/UserClient.java

@@ -148,7 +148,21 @@ public class UserClient
 	        HttpDownload download = new HttpDownload(url, out);
 	        download.run();
 
-	        this.handleThrowable(download);
+	        int responseCode = download.getResponseCode();
+	        if (responseCode == 404) // not found
+	        {
+	            return;
+	        }
+	        if (responseCode != 200)
+	        {
+	            String message = "Error calling /ac to augment subject";
+	            if (download.getThrowable() != null)
+	            {
+	                throw new IllegalStateException(message, download.getThrowable());
+	            }
+	            throw new IllegalStateException(message);
+	        }
+
 	        subject.getPrincipals().clear();
 	        subject.getPrincipals().addAll(this.getPrincipals(out));
     	}
@@ -192,17 +206,6 @@ public class UserClient
     	}
     }
 
-    protected void handleThrowable(HttpDownload download)
-    {
-    	Throwable throwable = download.getThrowable();
-        if (throwable != null)
-        {
-            log.debug("handleThrowable(): throwable (" + download
-                    .getResponseCode() + ")", throwable);
-            throw new IllegalStateException(throwable.getMessage());
-        }
-    }
-    
     protected URL getURL(Principal principal)
     {
 		try