multithreading and parsing1

app/db.py

@@ -1,18 +1,30 @@
-from flask import current_app, g
+from flask import g
 from werkzeug.local import LocalProxy
-from flask_pymongo import PyMongo
+from pymongo import MongoClient
+from .config import settings
+
+
+def connect_db():
+    client = MongoClient(settings["mongodb_uri"])
+    db = client[settings["mongodb_db"]]
+    collection = db[settings["mongodb_collection"]]
+    return collection
+
+
+def disconnect_db(conn):
+    conn.database.client.close()
 
 
 def get_db():
     """
     Configuration method to return db instance
     """
-    db = getattr(g, "_database", None)
+    collection = getattr(g, "_database", None)
 
-    if db is None:
-        db = g._database = PyMongo(current_app).db
+    if collection is None:
+        collection = g._database = connect_db()
 
-    return db
+    return collection
 
 
 # Use LocalProxy to read the global db instance with just `db`