Немножко привел к общему виду

aore/dbutils/dbhandler.py

@@ -0,0 +1,47 @@
+# -*- coding: utf-8 -*-
+
+from aore.dbutils.dbimpl import DBImpl
+from aore.config import db as dbparams
+from aore.dbutils.dbschemas import db_shemas, allowed_tables
+from traceback import format_exc
+import psycopg2
+import logging
+
+
+class DbHandler:
+    def __init__(self):
+        logging.basicConfig(format='%(asctime)s %(message)s')
+        self.db = DBImpl(psycopg2, dbparams)
+
+    def bulk_csv(self, chunck_size, table_name, csv_file_name):
+        sql_query = "COPY \"{}\" ({}) FROM '{}' DELIMITER '\t' NULL 'NULL'". \
+            format(table_name,
+                   ", ".join(
+                        db_shemas[table_name].fields),
+                        csv_file_name)
+        try:
+            cur = self.db.get_cursor()
+            cur.execute(sql_query)
+            self.db.transaction_commit()
+        except:
+            self.db.transaction_rollback()
+            logging.error("Error updating sql. Reason : {}".format(format_exc()))
+
+        logging.warning("Inserted {} queries FROM {}".format(chunck_size, csv_file_name))
+
+    def pre_create(self):
+        f = open("aore/templates/postgre/pre_create.sql")
+        create_db_syntax = f.read()
+        f.close()
+
+        try:
+            cur = self.db.get_cursor()
+            cur.execute(create_db_syntax)
+            self.db.transaction_commit()
+        except:
+            self.db.transaction_rollback()
+            raise "Error downloading. Reason : {}".format(format_exc())
+
+    def pre_update(self):
+        # TODO: update actions
+        pass