Made database file configurable

.gitignore

@@ -3,3 +3,4 @@ venv
 /test/clients.json
 *.pyc
 *.egg-info
+*.json

torch-sub.conf

@@ -0,0 +1,9 @@
+##############################################################################
+#  Sample torch-sub.conf file
+##############################################################################
+
+[mqtt]
+Topic=torch/+/wake              #Required
+
+[database]
+Filename=torch_clients.json     #Optional; Default: clients.json

torchsub/torch_sub.py

@@ -15,10 +15,6 @@ database_lock = threading.Lock()
 def update_client_record(client, userdata, message):
     database_lock.acquire()
 
-    if not os.path.exists(database_filename):
-        with open(database_filename, 'w') as database_blank:
-            json.dump({}, database_blank)
-
     with open(database_filename, 'r') as infile:
         database = json.load(infile)
 
@@ -47,6 +43,7 @@ class Config:
         self.broker_port = None
         self.topic = None
         self.tls = None
+        self.database_file = database_filename
         parser = self.do_cli_argument_parsing()
         (config_path, config_filename) = self.get_config_path(parser.parse_args())
         print("Using torch configuration path: " + config_path)
@@ -98,10 +95,20 @@ class Config:
                 'certfile': cert_file,
                 'keyfile': key_file
             }
+        if config.has_section('database'):
+            self.database_file = config['database'].get('Filename', fallback=database_filename)
 
 
 def main():
     config = Config()
+
+    global database_filename
+    database_filename = config.database_file
+
+    if not os.path.exists(database_filename):
+        with open(database_filename, 'w') as database_blank:
+            json.dump({}, database_blank)
+
     subscribe(config.broker_hostname,
               config.broker_port,
               config.topic,