Add: settings values, json parser from file (function), demo example

.gitignore

@@ -160,3 +160,5 @@ cython_debug/
 #  option (not recommended) you can uncomment the following to ignore the entire idea folder.
 #.idea/
 
+# Project specific
+config.json

isp_maintenance/ispmgr.py

@@ -0,0 +1,9 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+from settings.environment import env
+
+
+# TODO: delete this demo
+# Just show you which env get application or default values
+for key, value in env.dump().items():
+    print(key, '|', value)

isp_maintenance/settings/__init__.py

@@ -0,0 +1,15 @@
+from settings.environment import BASE_DIR
+
+from settings.platform import (
+    PLATFORM_TYPE,
+    PLATFORM_URL,
+    PLATFORM_CONFIG
+)
+
+from settings.db import(
+    DB_ENGINE,
+    DB_HOST,
+    DB_PORT,
+    DB_USER,
+    DB_PASSWORD
+)

isp_maintenance/settings/db.py

@@ -0,0 +1,20 @@
+from settings.environment import env
+from settings.platform import PLATFORM_CONFIG
+
+
+#! Required because some instance use psql db:
+DB_ENGINE = env.str(
+    'DB_ENGINE',
+    PLATFORM_CONFIG.get('DatabaseType', 'mysql')
+)
+
+# Connection parameters:
+DB_HOST = env.str('DB_HOST', 'mysql')
+DB_PORT = env.int('DB_PORT', 3306)
+DB_USER = env.str('DB_USER', 'root')
+
+#! Do not pass password on production. Use value from config.json
+DB_PASSWORD = env.str(
+    'DB_PASSWORD',
+    PLATFORM_CONFIG.get('MysqlRootPassword', '')
+)

isp_maintenance/settings/environment.py

@@ -0,0 +1,14 @@
+import pathlib
+from environs import Env
+
+
+# Build paths inside the project like this: BASE_DIR / 'subdir'.
+BASE_DIR = pathlib.Path(__file__).resolve().parent.parent
+
+
+# Init environment:
+env = Env()
+
+# read .env file, if it exists
+# reed more about .env file here: https://github.com/sloria/environs
+env.read_env()

isp_maintenance/settings/platform.py

@@ -0,0 +1,12 @@
+from settings.environment import env, BASE_DIR
+from utils.helpers import parse_json_file
+
+
+PLATFORM_TYPE = env.str('PLATFORM_TYPE', 'vm')
+
+PLATFORM_CONFIG = parse_json_file(f'{BASE_DIR}/config.json')
+
+PLATFORM_URL = env.url(
+    'PLATFORM_URL',
+    f"https://{PLATFORM_CONFIG.get('DomainName' ,'replace.me')}"
+)

isp_maintenance/utils/helpers.py

@@ -0,0 +1,20 @@
+import json
+import sys
+
+
+def parse_json_file(file_path): 
+    """
+    Function read json file as usual config.json then parse it to python dict
+
+    Args:
+        config_file_path (str): path to config file
+
+    Returns:
+        dict: contains parse json content
+    """
+    try:
+        with open(file_path, 'r') as f:
+            return json.load(f)
+    except Exception as error:
+        print(error)
+        sys.exit(1)