Device registration state events - Amazon IoT Core
How device registration state events workEnable notifications for device registration state eventsFormat of MQTT topics for device registration state eventsMessage payload for device registration state events
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Device registration state events

Device registration state events publish event notifications when there is a change in the device registration state, such as when a Sidewalk device has been provisioned or registered. The events provide you information about the different states that the device goes through from when it's provisioned to when it has been registered.

How device registration state events work

When you onboard your Sidewalk device with Amazon Sidewalk and Amazon IoT Wireless, Amazon IoT Wireless performs a create operation and adds your Sidewalk device to your Amazon Web Services account. Your device then enters the provisioned state and the eventType becomes provisioned. For more information about onboarding your device, see Getting started with Amazon IoT Core for Amazon Sidewalk.

After the device has been provisioned, Amazon Sidewalk performs a register operation to register your Sidewalk device with Amazon IoT Wireless. The registration process starts, where the encryption and session keys are set up with Amazon IoT. When the device is registered, the eventType becomes registered, and your device is ready to use.

After the device has been registered, Sidewalk can send a request to deregister your device. Amazon IoT Wireless then fulfills the request and changes the device state back to provisioned. For more information about the device states, see DeviceState.

Enable notifications for device registration state events

Before subscribers to the device registration state reserved topics can receive messages, you must enable event notifications for them from the Amazon Web Services Management Console, or by using the API or CLI. You can enable these events for all Sidewalk resources in your Amazon Web Services account or for select resources. For information about how to enable these events, see Enable events for wireless resources.

Format of MQTT topics for device registration state events

To notify you of device registration state events, you can subscribe to MQTT reserved topics that begin with a dollar ($) sign. For more information, see MQTT topics.

Reserved MQTT topics for Sidewalk device registration state events use the following format:

  • For resource-level topics:

    $aws/iotwireless/events/{eventName}/{eventType}/sidewalk/wireless_devices

  • For identifier topics:

    $aws/iotwireless/events/{eventName}/{eventType}/sidewalk/{resourceType}/{resourceID}/{id}

Where:

{eventName}

{eventName} must be device_registration_state.

{eventType}

{eventType} can be provisioned or registered.

{resourceType}

{resourceType} can be sidewalk_accounts or wireless_devices.

{resourceID}

{resourceID} is amazon_id for {resourceType} of sidewalk_accounts and wireless_device_id for {resourceType} of wireless_devices.

You can also use the + wildcard character to subscribe to multiple topics at the same time. The + wildcard character matches any string in the level that contains the character. For example, if you want to be notified of all possible event types (provisioned and registered) and for all devices registered to a particular Amazon ID, you can use the following topic filter:

$aws/iotwireless/events/device_registration_state/+/sidewalk/sidewalk_accounts/amazon_id/+

Note

You can't use the wildcard character # to subscribe to the reserved topics. For more information about topic filters, see Topic filters.

Message payload for device registration state events

After you enable notifications for device registration state events, event notifications are published over MQTT with a JSON payload. These events contain the following example payload:

{    
    "eventId": "string", 
    "eventType": "provisioned|registered", 
    "WirelessDeviceId": "string",
    "timestamp": "timestamp",

    // Event-specific fields
    "operation": "create|deregister|register", 
    "Sidewalk": {
        "AmazonId": "string",
        "SidewalkManufacturingSn": "string"
    }
}

The payload contains the following attributes:

eventId

A unique event ID (string).

eventType

The type of event that occurred. Can be provisioned or registered.

wirelessDeviceId

The identifier of the wireless device.

timestamp

The Unix timestamp of when the event occurred.

operation

The operation that triggered the event. Valid values are create, register, and deregister.

sidewalk

The Sidewalk Amazon ID or SidewalkManufacturingSn for which you want to receive event notifications.