fix (diracx): clearer error message

Author: chaen

src/DIRAC/Core/Security/DiracX.py

@@ -74,6 +74,8 @@ def DiracXClient() -> _DiracClient:
 
     proxyLocation = getDefaultProxyLocation()
     diracxToken = diracxTokenFromPEM(proxyLocation)
+    if not diracxToken:
+        raise ValueError(f"No dirax token in the proxy file {proxyLocation}")
 
     with NamedTemporaryFile(mode="wt") as token_file:
         token_file.write(json.dumps(diracxToken))

src/DIRAC/FrameworkSystem/scripts/dirac_diracx_whoami.py

@@ -13,9 +13,12 @@
 def main():
     Script.parseCommandLine()
 
-    with DiracXClient() as api:
-        user_info = api.auth.userinfo()
-        print(json.dumps(user_info.as_dict(), indent=2))
+    try:
+        with DiracXClient() as api:
+            user_info = api.auth.userinfo()
+            print(json.dumps(user_info.as_dict(), indent=2))
+    except Exception as e:
+        print(f"Failed to access DiracX: {e}")
 
 
 if __name__ == "__main__":