Merge pull request #680 from zomglings/fix-crawler-tx-rollback

Added transaction rollback when there is a violation of unique constraint when crawling blocks

crawlers/mooncrawl/mooncrawl/blockchain.py

@@ -215,8 +215,9 @@ def crawl_blocks(
 
                 db_session.commit()
             except IntegrityError as err:
+                db_session.rollback()
                 assert isinstance(err.orig, UniqueViolation)
-                logger.warning(
+                logger.error(
                     "UniqueViolation error occurred, it means block already exists"
                 )
             except Exception as err:

db/.gitignore

@@ -190,3 +190,6 @@ alembic.docker.ini
 # Schematic
 srv/
 .schematic.env
+
+# Custom
+scratch/