Adds logging for autocomplete responses. (datacommonsorg#4678)

Logs the response count for autocompletion. Staging is not showing any
responses. Would like to better understand where the breakdown is
occurring.

server/routes/shared_api/autocomplete/autocomplete.py

@@ -13,6 +13,7 @@
 # limitations under the License.
 
 import json
+import logging
 
 from flask import Blueprint
 from flask import jsonify
@@ -51,6 +52,8 @@ def autocomplete():
   place_id_to_dcid = []
   if place_ids:
     place_id_to_dcid = json.loads(findplacedcid(place_ids).data)
+  logging.info("[Place_Autocomplete] Found %d place ID to DCID mappings.",
+               len(place_id_to_dcid))
 
   final_predictions = []
   for prediction in prediction_responses:
@@ -61,5 +64,8 @@ def autocomplete():
           matched_query=prediction.matched_query,
           dcid=place_id_to_dcid[prediction.place_id])
       final_predictions.append(current_prediction)
+  logging.info(
+      "[Place_Autocomplete] Returning a total of %d place predictions.",
+      len(final_predictions))
 
   return jsonify(AutoCompleteApiResponse(predictions=final_predictions))

server/routes/shared_api/autocomplete/helpers.py

@@ -13,6 +13,7 @@
 # limitations under the License.
 
 import json
+import logging
 import re
 from typing import Dict, List
 from urllib.parse import urlencode
@@ -122,6 +123,8 @@ def predict(queries: List[str], lang: str) -> List[ScoredPrediction]:
       all_responses.append(scored_prediction)
 
   all_responses.sort(key=get_score)
+  logging.info("[Place_Autocomplete] Received %d total place predictions.",
+               len(all_responses))
 
   responses = []
   place_ids = set()