adjust for cluster deployment

src/pv_controller/config.py

@@ -0,0 +1,31 @@
+import os
+
+class Config:
+    OPTIONS = {
+            'mqtt': [ 'login', 
+                      'password', 
+                      'ca', 
+                      'cert', 
+                      'key', 
+                      'broker', 
+                      'port', 
+                      'meterPublishTopic', 
+                      'meterPublishPeriod', 
+                      'relaisSubscribeTopic' ],
+            'modbus': [ 'gateway' ]
+            }
+    
+    def __init__(self):
+        self.values = {}
+        for section, keys in OPTIONS:
+            self.values[section] = {}
+            for key in keys:
+                varname = f"{section}__{key}".upper()
+                try:
+                    self.values[section][key] = os.environ[varname]
+                except KeyError:
+                    pass
+
+    def __getitem__(self, section):
+        return self.values[index]
+

src/pv_controller/pvc.py

@@ -2,9 +2,8 @@ from MeterPublish import MeterPublish
 from RelaisSubscribe import RelaisSubscribe
 from ModbusBase import ModbusHandler
 from loguru import logger
+from config import Config
 import logging
-import argparse
-import configparser
 import threading
 
 
@@ -23,15 +22,7 @@ def exceptHook(args):
 
 logger.info("pv controller starting")
 
-parser = argparse.ArgumentParser(description="pv controller")
-parser.add_argument('--config', '-f',
-                    help='Config file, default is $pwd/config.ini',
-                    required=False,
-                    default='./config.ini')
-args = parser.parse_args()
-
-config = configparser.ConfigParser()
-config.read(args.config)
+config = Config()
 
 modbusHandler = ModbusHandler(config)