recreate

.woodpecker.yml

@@ -47,10 +47,7 @@ steps:
     commands:
       - printf "$KUBE_CONFIG_CONTENT" > /tmp/kubeconfig
       - export KUBECONFIG=/tmp/kubeconfig
-      - kubectl create configmap pv-controller-config 
-        --from-file=config.yaml=config/config.yaml 
-        --namespace=$NAMESPACE 
-        --dry-run=client -o yaml | kubectl apply -f - 
+      - kubectl create configmap pv-controller-config --from-file=config.yaml=config/config.yaml --namespace=$NAMESPACE --dry-run=client -o yaml | kubectl apply -f - 
 
   deploy:
     image: quay.io/wollud1969/k8s-admin-helper:0.3.4

config/config.yaml

@@ -1,5 +1,5 @@
 global:
-  scan_interval: 1
+  scan_interval: 0.25
   log_level: INFO
 
 mqtt:
@@ -24,18 +24,11 @@ input:
 
 output:
   - name: pv_meter
-    enabled: true 
-    scan_rate: 15
+    enabled: true
+    scan_rate: 60
     publish_topic: IoT/PV/Values
     slave_id: 2
     registers:
-      - address: 0x0048
-        attribute: importEnergyActive
-        name: Import active energy
-        unit: kWh
-        register_type: input
-        data_type: float32
-        adaptor: floatAdaptor
       - address: 0x004c
         attribute: importEnergyReactive
         name: Import reactive energy

config/config.yaml-bak

@@ -0,0 +1,7 @@
+      - address: 0x0048
+        attribute: importEnergyActive
+        name: Import active energy
+        unit: kWh
+        register_type: input
+        data_type: float32
+        adaptor: floatAdaptor

deployment/install-yml.tmpl

@@ -9,6 +9,8 @@ metadata:
     reloader.stakater.com/configmap: "pv-controller-config"
 spec:
   replicas: 1
+  strategy:
+    type: Recreate
   selector:
     matchLabels:
       app: pv-controller

src/pv_controller/FromDevices.py

@@ -52,7 +52,7 @@ class FromDevices(AbstractMqttPublisher):
                     payload['cnt'] = cnt
                 
                     payloadStr = json.dumps(payload) if not device.raw_output else str(payload['output'])
-                    self.client.publish(device.publish_topic, payloadStr)
+                    self.publish_with_cache(device.publish_topic, payloadStr)
                     logger.debug(f"mqtt message sent: {device.publish_topic} -> {payloadStr}")
                 except Exception as e:
                     logger.error(f"Caught exception: {str(e)}")

src/pv_controller/MqttBase.py

@@ -25,6 +25,8 @@ class AbstractMqttPublisher(threading.Thread):
         logger.info(f"mqtt client id: {client_id}")
         self.client = mqtt.Client(client_id=client_id, userdata=self)
 
+        self.cache = {}
+
         # consider this flag in the localLoop
         self.killBill = False
         self.killEvent = threading.Event()
@@ -62,3 +64,10 @@ class AbstractMqttPublisher(threading.Thread):
     def onMessage(self, topic, payload):
         logger.warning("mqtt unexpected message received: {} -> {}".format(topic, str(payload)))
 
+    def publish_with_cache(self, topic, payload):
+        if topic in self.cache and self.cache[topic] == payload:
+            logger.debug(f"mqtt message unchanged, not publishing: {topic} -> {payload}")
+            return
+        self.cache[topic] = payload
+        self.client.publish(topic, payload, retain=True)
+

src/pv_controller/config.py

@@ -51,7 +51,7 @@ class ModbusConfig(BaseModel):
 
 class GlobalConfig(BaseModel):
     """Global settings"""
-    scan_interval: int
+    scan_interval: float
     log_level: str