Remove automatic retrieval to hgp (#1587)

With the change to the qiskit-ibm-runtime service, the hub/group/project
access syntax has been removed. Lingering references to this in
experiments caused errors with the release of runtime 0.41.0. The
attempt to retrieve the hub/group/project automatically by
`ExperimentData` has been removed. The hub/group/project properties have
been left, though they are mostly useless outside of loading historical
data since the current model of the IBM Quantum service does not use
them.

---------

Co-authored-by: Will Shanks <willshanks@us.ibm.com>

Author: dcmckayibm

docs/howtos/cloud_service.rst

@@ -2,9 +2,9 @@ Save and load experiment data with the cloud service
 ====================================================
 
 .. note::
-    This guide is only for those who have access to the cloud service. You can 
-    check whether you do by logging into the IBM Quantum interface 
-    and seeing if you can see the `database <https://quantum.ibm.com/experiments>`__.
+    The cloud service at `database <https://quantum.ibm.com/experiments>` has been
+    sunset in the move to the new IBM Quantum cloud platform. Saving and loading
+    to the cloud will not work. We are working on a local saving solution.
 
 Problem
 -------

qiskit_experiments/framework/experiment_data.py

@@ -598,15 +598,15 @@ def _set_backend(self, new_backend: Backend, recursive: bool = True) -> None:
         self._db_data.backend = self._backend_data.name
         if self._db_data.backend is None:
             self._db_data.backend = str(new_backend)
-        if hasattr(self._backend, "_instance") and self._backend._instance:
-            self.hgp = self._backend._instance
         if recursive:
             for data in self.child_data():
                 data._set_backend(new_backend)
 
     @property
     def hgp(self) -> str:
         """Returns Hub/Group/Project data as a formatted string"""
+        if self.hub is None or self.group is None or self.project is None:
+            raise QiskitError("Hub, group, and/or project are not set!")
         return f"{self.hub}/{self.group}/{self.project}"
 
     @hgp.setter

releasenotes/notes/fix_hgp_bug-e131e03f71459029.yaml

@@ -0,0 +1,21 @@
+---
+
+upgrade:
+  - |
+    The automatic retrieval of hub, group, and project information from a
+    backend for storage in an :class:`~.ExperimentData` instance has been
+    removed  as these properties are no longer a part of the access model in
+    the new IBM Quantum Platform on IBM Cloud. The new model has instances with
+    "plans" and "names" but these do not map directly to the hub, group, and
+    project information. Currently, no attempt is made to capture this
+    information in an equivalent way.
+
+fixes:
+  - |
+    As described in the Upgrade Notes, automatic retrieval of hub, group, and
+    project information is no longer attempted when the backend is set on an
+    :class:`~.ExperimentData` instance. Avoiding this retrieval avoids an
+    exception being raised when working with
+    :external+qiskit_ibm_runtime:doc:`qiskit-ibm-runtime <index>` version 0.41
+    which changed the behavior of the interface that had been used for
+    accessing the hub, group, and project information.

test/database_service/test_db_experiment_data.py

@@ -1150,13 +1150,6 @@ def test_getters(self):
         data._db_data.updated_datetime = test_time
         self.assertEqual(data.updated_datetime, test_time)
 
-        data._db_data.hub = "hub_name"
-        data._db_data.group = "group_name"
-        data._db_data.project = "project_name"
-        self.assertEqual(data.hub, "hub_name")
-        self.assertEqual(data.group, "group_name")
-        self.assertEqual(data.project, "project_name")
-
         data._db_data.experiment_id = "exp_id"
         data._db_data.experiment_type = "exp_type"
         self.assertEqual(data.experiment_id, "exp_id")
@@ -1198,15 +1191,6 @@ def test_metadata_too_large(self):
         ]
         self.assertTrue(exp_data._metadata_too_large())
 
-    def test_hgp_setter(self):
-        """Tests usage of the hgp setter"""
-        exp_data = ExperimentData()
-        exp_data.hgp = "ibm-q-internal/deployed/default"
-        self.assertEqual("ibm-q-internal/deployed/default", exp_data.hgp)
-        self.assertEqual("ibm-q-internal", exp_data.hub)
-        self.assertEqual("deployed", exp_data.group)
-        self.assertEqual("default", exp_data.project)
-
     def test_add_delete_artifact(self):
         """Tests adding an artifact and a list of artifacts. Tests deleting an artifact
         by name, ID, and index and ID. Test the metadata is correctly tracking additions