Added the possibility to write directly to Influx

Since I am not using Influx as a DB of my HomeAssistant setup, I wanted a way to bring the data there. Another issue is that I used another script to gather the data and hence have other naming conventions on my dashboards. Therefore the name of the measurements are now part of the config JSON file. This could be an idea adopted to MQTT as well.

config/mqtt.json

@@ -4,5 +4,47 @@
     "topic": "homeassistant",
     "devicename": "voltronic",
     "username": "",
-    "password": ""
+    "password": "",
+    "influx": {
+        "host": "http://[INFLUX_IP_OR_URL]:8086", 
+        "username": "", 
+        "password": "", 
+        "device": "voltronic", 
+        "prefix": "solar",
+        "database": "solar", 
+        "namingMap": {
+            "Inverter_mode": "output_mode",
+            "AC_grid_voltage":  "grid_voltage",
+            "AC_grid_frequency":  "grid_frecuency",
+            "AC_out_voltage":  "ac_output_voltage",
+            "AC_out_frequency":  "ac_output_frecuency",
+            "PV_in_voltage":  "pv_input_voltage_1",
+            "PV_in_current":  "pv_input_current_for_battery",
+            "PV_in_watts":  "pv_input_watts",
+            "PV_in_watthour": "pv_input_watthour",
+            "SCC_voltage": "battery_voltage_from_scc",
+            "Load_pct": "output_load_percent",
+            "Load_watt": "output_load_watt",
+            "Load_watthour": "outpu_load_watthour",
+            "Load_va": "ac_output_power_va",
+            "Bus_voltage": "bus_voltage",
+            "Heatsink_temperature": "inverter_heat_sink_temperature",
+            "Battery_capacity": "battery_capacity",
+            "Battery_voltage": "battery_voltage",
+            "Battery_charge_current": "battery_charging_current",
+            "Battery_discharge_current": "battery_discharge_current",
+            "Load_status_on": "load_status_on",
+            "SCC_charge_on": "scc_charge_on",
+            "AC_charge_on": "ac_charge_on",
+            "Battery_recharge_voltage":  "battery_recharge_voltage",
+            "Battery_under_voltage":  "battery_under_voltage",
+            "Battery_bulk_voltage":  "battery_bulk_voltage",
+            "Battery_float_voltage":  "battery_float_voltage",
+            "Max_grid_charge_current": "max_grid_charge_current",
+            "Max_charge_current": "max_charge_current",
+            "Out_source_priority": "output_source_priority",
+            "Charger_source_priority": "charger_source_priority",
+            "Battery_redischarge_voltage":  "battery_re_discharge_voltage"
+        }
+    }
 }

sources/inverter-mqtt/mqtt-push.sh

@@ -1,7 +1,12 @@
 #!/bin/bash
+INFLUX_HOST=`cat /etc/inverter/mqtt.json | jq '.influx.host' -r`
+if [[ -n $INFLUX_HOST ]]; then 
+    INFLUX_ENABLED=true
+else
+    INFLUX_ENABLED=false
+fi
 
 pushMQTTData () {
-
     MQTT_SERVER=`cat /etc/inverter/mqtt.json | jq '.server' -r`
     MQTT_PORT=`cat /etc/inverter/mqtt.json | jq '.port' -r`
     MQTT_TOPIC=`cat /etc/inverter/mqtt.json | jq '.topic' -r`
@@ -16,6 +21,22 @@ pushMQTTData () {
         -P "$MQTT_PASSWORD" \
         -t "$MQTT_TOPIC/sensor/"$MQTT_DEVICENAME"_$1" \
         -m "$2"
+    
+    if "$INFLUX_ENABLED"; then
+        pushInfluxData $1 $2
+    fi
+}
+
+pushInfluxData () {
+    INFLUX_HOST=`cat /etc/inverter/mqtt.json | jq '.influx.host' -r`
+    INFLUX_USERNAME=`cat /etc/inverter/mqtt.json | jq '.influx.username' -r`
+    INFLUX_PASSWORD=`cat /etc/inverter/mqtt.json | jq '.influx.password' -r`
+    INFLUX_DEVICE=`cat /etc/inverter/mqtt.json | jq '.influx.device' -r`
+    INFLUX_PREFIX=`cat /etc/inverter/mqtt.json | jq '.influx.prefix' -r`
+    INFLUX_DATABASE=`cat /etc/inverter/mqtt.json | jq '.influx.database' -r`
+    INFLUX_MEASUREMENT_NAME=`cat /etc/inverter/mqtt.json | jq '.influx.namingMap.'$1'' -r`
+    
+    curl -i -XPOST "$INFLUX_HOST/write?db=$INFLUX_DATABASE&precision=s" -u "$INFLUX_USERNAME:$INFLUX_PASSWORD" --data-binary "$INFLUX_PREFIX,device=$INFLUX_DEVICE $INFLUX_MEASUREMENT_NAME=$2"
 }
 
 INVERTER_DATA=`timeout 10 /opt/inverter-cli/bin/inverter_poller -1`