[Feature request] Add optional check for HA remote_rpi_gpio connectivity

[andystewart999]

Hi there,

HA's remote_rpi_gpio integration is great but it's not very robust... if the endpoint Pi reboots it never reconnects and the 'parent' HA instance needs to be restarted.

I've added a check to system_sensors to see if there is an active connection on the remote GPIO port from the parent HA instance, and include that flag in the MQTT output. I'm offering it for consideration as a feature update.

Under updateSensors()

    if "check_remote_gpio" in settings and settings["check_remote_gpio"]:
        payload_str = payload_str + '", "remote_gpio": "' + check_remote_gpio()

The function itself:

def check_remote_gpio():
    temp = check_output(['bash', '-c', "netstat -tWn" ]).decode('utf-8')
    if ":8888" in temp:
        temp = check_output(['bash', '-c', "netstat -tW | grep 8888" ]).decode('utf-8')
        if settings["remote_gpio_ip"] not in temp:
            return "Not connected"
        else:
            return "Connected"
    else:
        return "Not connected"

Defining the new MQTT field metadata:

    if "check_remote_gpio" in settings and settings["check_remote_gpio"]:
        mqttClient.publish(
            topic="homeassistant/sensor/"
            + deviceName
            + "/"
            + deviceName
            + "RemoteGPIO/config",
            payload='{"name":"'
            + deviceName
            + 'RemoteGPIO","state_topic":"system-sensors/sensor/'
            + deviceName
            + '/state","value_template":"{{ value_json.remote_gpio}}","unique_id":"'
            + deviceName.lower()
            + '_sensor_remote_gpio","device":{"identifiers":["'
            + deviceName.lower()
           + '_sensor"],"name":"'
            + deviceName
            + 'Sensors","model":"RPI '
            + deviceName
            + '","manufacturer":"RPI"}, "icon":"mdi:swap-horizontal"}',
            qos=1,
            retain=True,
        )

New values in settings.yaml:

check_remote_gpio: true
remote_gpio_ip: 192.168.11.

Thanks again for your continued efforts,
Andy