Move Potential SQA deprecation message (#3108)

Summary: Pull Request resolved: #3108

Reviewed By: Cesar-Cardoso

Differential Revision: D66369657

fbshipit-source-id: fad34541c3a4aaf0dfe77b5c4133a0cfd76919eb

ax/storage/sqa_store/encoder.py

@@ -84,11 +84,6 @@ class Encoder:
     """
 
     def __init__(self, config: SQAConfig) -> None:
-        logger.error(
-            "ATTENTION: The Ax team is considering deprecating SQLAlchemy storage. "
-            "If you are currently using SQLAlchemy storage, please reach out to us "
-            "via GitHub Issues here: https://github.com/facebook/Ax/issues/2975"
-        )
         self.config = config
 
     @classmethod
@@ -152,6 +147,13 @@ def experiment_to_sqa(self, experiment: Experiment) -> SQAExperiment:
         create and store copies of the Trials, Metrics, Parameters,
         ParameterConstraints, and Runner owned by this Experiment.
         """
+
+        logger.error(
+            "ATTENTION: The Ax team is considering deprecating SQLAlchemy storage. "
+            "If you are currently using SQLAlchemy storage, please reach out to us "
+            "via GitHub Issues here: https://github.com/facebook/Ax/issues/2975"
+        )
+
         optimization_metrics = self.optimization_config_to_sqa(
             experiment.optimization_config
         )