Singleton mongo client, added mongosh easy enter command, better logging, added idle time to mongo connection

docker-compose.yml

@@ -22,7 +22,6 @@ services:
       - ./docker/config/app.env
     volumes:
       - ./src:/src
-      - ./logs:/var/log/bot
     ports:
       - $APP_EXPOSED_PORT:$APP_INTERNAL_PORT
     depends_on:

docker/mongosh

@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+
+if [ -f docker/config/app.env ]
+then
+  source docker/config/app.env
+fi
+
+docker-compose exec database mongosh --port $MONGODB_PORT --host $MONGODB_HOSTNAME --username $MONGODB_USERNAME --password $MONGODB_PASSWORD --authenticationDatabase admin $MONGODB_DATABASE

docker/start

@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+
+docker-compose stop
+docker-compose up -d
+docker logs -f $(docker-compose ps -q app) &> app.log &

src/config/envs.py

@@ -1,4 +1,5 @@
 import os
+from urllib.parse import quote_plus
 
 from dotenv import load_dotenv
 
@@ -8,10 +9,10 @@ BOT_TOKEN = os.environ['BOT_TOKEN']
 WEBHOOK_URL = os.environ['WEBHOOK_URL']
 PORT = os.environ['PORT']
 
-MONGODB_DATABASE = os.environ['MONGODB_DATABASE']
-MONGODB_USERNAME = os.environ['MONGODB_USERNAME']
-MONGODB_PASSWORD = os.environ['MONGODB_PASSWORD']
-MONGODB_HOSTNAME = os.environ['MONGODB_HOSTNAME']
-MONGODB_PORT = os.environ['MONGODB_PORT']
+MONGO_DATABASE = os.environ['MONGODB_DATABASE']
+MONGO_CONNECTION_STRING = "mongodb://%s:%s@%s:%s/%s?authSource=admin" % (
+    os.environ['MONGODB_USERNAME'], quote_plus(os.environ['MONGODB_PASSWORD']),
+    os.environ['MONGODB_HOSTNAME'], os.environ['MONGODB_PORT'], MONGO_DATABASE
+)
 
 BANNED_USERS = os.environ['BANNED_USERS'].split(',') or []

src/database/client.py

@@ -1,25 +1,25 @@
-from urllib.parse import quote_plus
-
+from __future__ import annotations
 from pymongo import MongoClient
 from pymongo.database import Database
 
-from config.envs import (MONGODB_DATABASE, MONGODB_HOSTNAME,
-                         MONGODB_PASSWORD, MONGODB_PORT,
-                         MONGODB_USERNAME)
+from config.envs import MONGO_CONNECTION_STRING, MONGO_DATABASE
+from decorators.singleton import Singleton
 
 
-class Client:
+class Client(metaclass=Singleton):
     mongo_client: MongoClient
     database: Database
 
-    def __init__(self) -> None:
-        uri = "mongodb://%s:%s@%s:%s/%s?authSource=admin" % (
-            MONGODB_USERNAME, quote_plus(MONGODB_PASSWORD),
-            MONGODB_HOSTNAME, MONGODB_PORT, MONGODB_DATABASE
-        )
+    # allow only 10 minutes on idle, close connection after
+    max_idle_time: int = 10 * (60 * 1000)
 
-        self.mongo_client = MongoClient(uri)
-        self.database = self.mongo_client[MONGODB_DATABASE]
+    def __init__(self) -> None:
+        self.mongo_client = MongoClient(
+            MONGO_CONNECTION_STRING,
+            connect=False,
+            maxIdleTimeMS=self.max_idle_time
+        )
+        self.database = self.mongo_client[MONGO_DATABASE]
 
     def insert_one(self, collection: str, data: dict) -> None:
         self.database.get_collection(collection).insert_one(data)

src/decorators/singleton.py

@@ -0,0 +1,8 @@
+class Singleton(type):
+    _instances: dict = {}
+
+    def __call__(cls, *args, **kwargs):
+        if cls not in cls._instances:
+            cls._instances[cls] = super(Singleton, cls).__call__(*args, **kwargs)
+
+        return cls._instances[cls]

src/logger.py

@@ -14,9 +14,6 @@ class Logger:
     main_logger: str = 'main-logger'
     main_logger_file: str = '/var/log/bot/app.log'
 
-    # noinspection SpellCheckingInspection
-    formatter: logging.Formatter = logging.Formatter('%(asctime)s[%(levelname)s]: %(message)s')
-
     def __init__(self):
         self.configure(self.action_logger, self.action_logger_file, logging.INFO)
         self.configure(self.main_logger, self.main_logger_file, logging.ERROR)
@@ -27,10 +24,13 @@ class Logger:
             os.makedirs(directory)
 
         logger = logging.getLogger(logger_name)
+        logger.propagate = False
+
         file_handler = logging.FileHandler(log_file, mode='w')
-        file_handler.setFormatter(self.formatter)
+        formatter = logging.Formatter('%(asctime)s [%(levelname)s]: %(message)s', datefmt='%H:%M:%S %Y/%m/%d')
+        file_handler.setFormatter(formatter)
         stream_handler = logging.StreamHandler()
-        stream_handler.setFormatter(self.formatter)
+        stream_handler.setFormatter(formatter)
 
         logger.setLevel(level)
         logger.addHandler(file_handler)