db in account

db.py

@@ -0,0 +1,50 @@
+import psycopg2
+from loguru import logger
+import os
+import configparser
+
+
+
+DB_USER = ""
+DB_PASS = ""
+DB_HOST = ""
+DB_NAME = ""
+try:
+    DB_USER = os.environ["DB_USER"]
+    DB_PASS = os.environ["DB_PASS"]
+    DB_HOST = os.environ["DB_HOST"]
+    DB_NAME = os.environ["DB_NAME"]
+except KeyError:
+    config = configparser.ConfigParser()
+    config.read('/opt/app/config/dbconfig.ini')
+    DB_USER = config["database"]["user"]
+    DB_PASS = config["database"]["pass"]
+    DB_HOST = config["database"]["host"]
+    DB_NAME = config["database"]["name"]
+
+
+def databaseOperation(cursor, params):
+    cursor.execute('SELECT key, value FROM claims_for_user_v where "user" = %s and application = %s', 
+                params)
+    for claimObj in cursor:
+        logger.debug("add claim {} -> {}".format(claimObj[0], claimObj[1]))
+    return []
+
+
+def execDatabaseOperation(func, params):
+    conn = None
+    cur = None
+    try:
+        conn = psycopg2.connect(user = DB_USER, password = DB_PASS,
+                                host = DB_HOST, database = DB_NAME)
+        conn.autocommit = False
+
+        with conn.cursor() as cur:
+            return func(cur, params)
+    except psycopg2.Error as err:
+        raise Exception("Error when connecting to database: {}".format(err))
+    finally:
+        if conn:
+            conn.close()
+
+