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pythonazure-iot-hub

Retrieve Azure IoT connection string using Python

I have the following code

conn_str = "HostName=my_host.azure-devices.net;DeviceId=MY_DEVICE;SharedAccessKey=MY_KEY"
device_conn = IoTHubDeviceClient.create_from_connection_string(conn_str)
await device_conn.connect()

This works fine, but only because I've manually retrieved this from the IoT hub and pasted it into the code. We are going to have hundreds of these devices, so is there a way to retrieve this connection string programmatically?

It'll be the equivalent of the following

az iot hub device-identity connection-string show --device-id MY_DEVICCE --hub-name MY_HUB --subscription ABCD1234

How do I do this?

Solution

  • The device id and key are you give to the each device and you choose where to store/how to load it. The connection string is just a concept for easy to get started but it has no meaning in the actual technical level.

    You can use create_from_symmetric_key(symmetric_key, hostname, device_id, **kwargs) to direct pass key, id and hub uri to sdk.