RPI: be able to handle more than one inverter with the volkszaehler

plugin

tools/rpi/ahoy.yml.example

@@ -30,6 +30,8 @@ ahoy:
 
   volkszaehler:
     disabled: true
+    inverters:
+      - serial: 114172220003
         url: 'http://localhost/middleware/'
         channels:
           - type: 'temperature'

tools/rpi/hoymiles/outputs.py

@@ -208,14 +208,10 @@ try:
 except ModuleNotFoundError:
     pass
 
-class VolkszaehlerOutputPlugin(OutputPluginFactory):
+class VzInverterOutput:
-    def __init__(self, config, **params):
+    def __init__(self, config, session):
-        """
+        self.session = session
-        Initialize VolkszaehlerOutputPlugin
+        self.serial = config.get('serial')
-        """
-        super().__init__(**params)
-
-        self.session = requests.Session()
         self.baseurl = config.get('url', 'http://localhost/middleware/')
         self.channels = dict()
         for channel in config.get('channels', []):
@@ -224,7 +220,7 @@ class VolkszaehlerOutputPlugin(OutputPluginFactory):
             if uid and ctype:
                 self.channels[ctype] = uid
 
-    def store_status(self, response, **params):
+    def store_status(self, data, session):
         """
         Publish StatusResponse object
 
@@ -232,15 +228,9 @@ class VolkszaehlerOutputPlugin(OutputPluginFactory):
 
         :raises ValueError: when response is not instance of StatusResponse
         """
-
-        if not isinstance(response, StatusResponse):
-            raise ValueError('Data needs to be instance of StatusResponse')
-
         if len(self.channels) == 0:
             return
 
-        data = response.__dict__()
-
         ts = int(round(data['time'].timestamp() * 1000))
 
         # AC Data
@@ -277,3 +267,37 @@ class VolkszaehlerOutputPlugin(OutputPluginFactory):
                 raise ValueError('Could not send request (%s)' % url)
         except ConnectionError as e:
             raise ValueError('Could not send request (%s)' % e)
+
+class VolkszaehlerOutputPlugin(OutputPluginFactory):
+    def __init__(self, config, **params):
+        """
+        Initialize VolkszaehlerOutputPlugin
+        """
+        super().__init__(**params)
+
+        self.session = requests.Session()
+        self.inverters = dict()
+        for inverterconfig in config.get('inverters', []):
+            serial = inverterconfig.get('serial')
+            output = VzInverterOutput(inverterconfig, self.session)
+            self.inverters[serial] = output
+
+    def store_status(self, response, **params):
+        """
+        Publish StatusResponse object
+
+        :param hoymiles.decoders.StatusResponse response: StatusResponse object
+
+        :raises ValueError: when response is not instance of StatusResponse
+        """
+        if not isinstance(response, StatusResponse):
+            raise ValueError('Data needs to be instance of StatusResponse')
+
+        if len(self.inverters) == 0:
+            return
+
+        data = response.__dict__()
+        serial = data["inverter_ser"]
+        if serial in self.inverters:
+            output = self.inverters[serial]
+            output.store_status(data, self.session)