Paver commands for storing and retrieving bokchoy db caches from s3 TE-2353

scripts/calculate-bokchoy-migrations.sh

@@ -18,22 +18,24 @@ else
     SETTINGS="bok_choy_docker"
 fi
 
-declare -A databases
 declare -a database_order
-databases=(["default"]="edxtest" ["student_module_history"]="student_module_history_test")
 database_order=("default" "student_module_history")
 
 for db in "${database_order[@]}"; do
-    echo "CREATE DATABASE IF NOT EXISTS ${databases[$db]};" | mysql $MYSQL_HOST -u root
+    # Use a different database than the one used for testing,
+    # because we will need to empty out the database to calculate
+    # the migrations fingerprint.
+    # Choosing an arbitrary name "calculate_migrations" for the db.
+    echo "DROP DATABASE IF EXISTS calculate_migrations;" | mysql $MYSQL_HOST -u root
+    echo "CREATE DATABASE calculate_migrations;" | mysql $MYSQL_HOST -u root
 
-    # Clear out the test database using the reset_db command which uses "DROP DATABASE" and
-    # "CREATE DATABASE". This will result in an empty database.
-    echo "Clearing out the $db bok_choy MySQL database."
-    ./manage.py lms --settings $SETTINGS reset_db --traceback --router $db
     # Now output all the migrations in the platform to a file.
-    echo "Calculating migrations."
+    echo "Calculating migrations for fingerprinting."
 
     output_file="common/test/db_cache/bok_choy_${db}_migrations.yaml"
-    ./manage.py lms --settings $SETTINGS show_unapplied_migrations --database $db --output_file $output_file
-
+    # Redirect stdout to /dev/null because the script will print
+    # out all migrations to both stdout and the output file.
+    ./manage.py lms --settings $SETTINGS show_unapplied_migrations --database $db --output_file $output_file 1>/dev/null
 done
+
+echo "DROP DATABASE IF EXISTS calculate_migrations;" | mysql $MYSQL_HOST -u root