change settings for AltConnector

src/database/AltConnector.py

 from scrapy.conf import settings
 from utils.Singleton import Singleton
 import MySQLdb as sql
-import os
 
 
 class AltConnector(metaclass=Singleton):
@@ -10,12 +9,12 @@ class AltConnector(metaclass=Singleton):
     @staticmethod
     def get_connection():
         if not AltConnector.__connection:
-            # TODO cant use db-port
             AltConnector.__connection = sql.connect(
-                os.getenv('DB_HOST'),
-                os.getenv('DB_USERNAME'),
-                os.getenv('DB_PASSWORD'),
-                os.getenv('DB_DATABASE'),
+                settings['DB_HOST'],
+                settings['DB_USERNAME'],
+                settings['DB_PASSWORD'],
+                settings['DB_DATABASE'],
                 charset='utf8',
-                port=int(os.getenv('DB_PORT')))
+                port=settings['DB_PORT']
+            )
         return AltConnector.__connection

src/settings.py

@@ -97,13 +97,19 @@ ITEM_PIPELINES = {
 # HTTPCACHE_IGNORE_HTTP_CODES = []
 # HTTPCACHE_STORAGE = 'scrapy.extensions.httpcache.FilesystemCacheStorage'
 
+DB_CONNECTION = os.getenv('DB_CONNECTION')
+DB_USERNAME = os.getenv('DB_USERNAME')
+DB_PASSWORD = os.getenv('DB_PASSWORD')
+DB_HOST = os.getenv('DB_HOST')
+DB_PORT = int(os.getenv('DB_PORT'))
+DB_DATABASE = os.getenv('DB_DATABASE')
 CONNECTION_STRING = "{drivername}://{user}:{passwd}@{host}:{port}/{db_name}?charset=utf8".format(
-    drivername=os.getenv('DB_CONNECTION'),
-    user=os.getenv('DB_USERNAME'),
-    passwd=os.getenv('DB_PASSWORD'),
-    host=os.getenv('DB_HOST'),
-    port=os.getenv('DB_PORT'),
-    db_name=os.getenv('DB_DATABASE'),
+    drivername=DB_CONNECTION,
+    user=DB_USERNAME,
+    passwd=DB_PASSWORD,
+    host=DB_HOST,
+    port=str(DB_PORT),
+    db_name=DB_DATABASE,
 )
 
 # Logger config