fix: reset public schema before restore pg_dump (#20)

* fix: reset public schema

* update: changelog

* feature: add survey script

* fix: shellcheck rules [SC1091] [SC2162]

CHANGELOG.md

@@ -4,6 +4,7 @@
 
 ### New Features
 
+* [fix] restore_backup.sh restores the default public scheme
 * SSL configuration is enabled by default
 * Add backup and restore scripts
 * Add `markdownlint` check in CI

restore_backup.sh

@@ -7,8 +7,44 @@ CPU_COUNT=4
 DB_CONTAINER_ID=$(docker-compose ps -q db)
 BACKUP_NAME="${BACKUP_NAME:-unknown-backup}"
 
+
+echo 'The script restores the default state of the' \
+     'public schema, which will delete all data'
+
+while true; do
+
+     echo "Continue? (yes/no) "
+     read -r yn
+
+     case $yn in 
+          yes ) echo 'start of dump recovery';
+               break;;
+          no ) echo 'exiting...';
+               exit 1;;
+          * ) echo 'invalid response';;
+     esac
+
+done
+
+
+# download dump
 aws s3 cp s3://palladium-backup/"$BACKUP_NAME" .
+
+# reset the public schema & define access privileges
+docker exec \
+-u postgres \
+"$DB_CONTAINER_ID" \
+psql -c \
+'DROP SCHEMA public CASCADE; CREATE SCHEMA public; GRANT ALL ON SCHEMA public TO postgres; GRANT ALL ON SCHEMA public TO public;'
+
+# restore pg_backup
 docker cp "$BACKUP_NAME" "$DB_CONTAINER_ID":/tmp/
-docker exec "$DB_CONTAINER_ID" pg_restore -j $CPU_COUNT -U postgres -d postgres /tmp/"$BACKUP_NAME"
+docker exec "$DB_CONTAINER_ID" \
+                    pg_restore \
+                    -j $CPU_COUNT \
+                    -U postgres \
+                    -d postgres \
+                    /tmp/"$BACKUP_NAME"
 docker exec "$DB_CONTAINER_ID" rm /tmp/"$BACKUP_NAME"
+
 rm "$BACKUP_NAME"