Experiment DB fixes

qiskit_experiments/database_service/db_experiment_data.py

@@ -983,6 +983,10 @@ def save(self) -> None:
             return
 
         self._save_experiment_metadata()
+        if not self._created_in_db:
+            LOG.warning("Could not save experiment metadata to DB, aborting experiment save")
+            return
+
         for result in self._analysis_results.values():
             result.save()
 
@@ -1011,11 +1015,18 @@ def save(self) -> None:
                 self._service.delete_figure(experiment_id=self.experiment_id, figure_name=name)
             self._deleted_figures.remove(name)
 
-        if self._created_in_db and self.verbose:
-            print(
-                "You can view the experiment online at "
-                "https://quantum-computing.ibm.com/experiments/" + self.experiment_id
-            )
+        if self.verbose:
+            # this field will be implemented in the new service package
+            if hasattr(self._service, "web_interface_link"):
+                print(
+                    "You can view the experiment online at "
+                    f"{self._service.web_interface_link}/{self.experiment_id}"
+                )
+            else:
+                print(
+                    "You can view the experiment online at "
+                    f"https://quantum-computing.ibm.com/experiments/{self.experiment_id}"
+                )
 
     @classmethod
     def load(cls, experiment_id: str, service: DatabaseServiceV1) -> "DbExperimentDataV1":

releasenotes/notes/experiment_service_fixes-94730fd6bab83956.yaml

@@ -0,0 +1,6 @@
+---
+fixes:
+  - |
+    `Experiment.save()` should now fail gracefully when experiment metadata failed to save instead of crashing
+  - |
+    The link to the result db shown after saving is now by default obtained from the service, not hard-coded