Platform Delivering a Configuration Notification
Function
This API is used by the platform to deliver a configuration notification to a device. The platform allows you to perform remote configuration. You can remotely update device configuration items such as system and running parameters without interrupting device running. For example, you can remotely modify system parameters of cashiers running in Windows and the data reporting frequency of T-Boxes in the Internet of Vehicles (IoV) scenarios.
Topic
Downstream: $oc/devices/{device_id}/sys/events/down
Parameters
Parameter |
Mandatory or Optional |
Type |
Description |
---|---|---|---|
object_device_id |
Optional |
String |
Indicates the device that the event is about. If this parameter is not carried, the device specified in the topic is considered to be the device involved. |
services |
Optional |
List<ServiceEvent> |
Indicates a list of services that the event is about. |
ServiceEvent structure
Parameter |
Mandatory or Optional |
Type |
Description |
---|---|---|---|
service_id |
Mandatory |
String |
Indicates the system field. The value is fixed to $device_config. |
event_type |
Mandatory |
String |
Indicates the system field. The value is fixed to config_update. |
event_time |
Optional |
String |
Indicates the time when the event occurs. UTC time format: yyyyMMdd'T'HHmmss'Z'. |
paras |
Mandatory |
Object |
Indicates the event parameters in JSON format. |
paras structure
Parameter |
Mandatory or Optional |
Type |
Description |
---|---|---|---|
config_content |
Mandatory |
Object |
Indicates the configuration content. |
Example
Topic: $oc/devices/{device_id}/sys/events/down Data format: { "object_device_id":"{object_device_id}", "services":[ { "service_id":"$device_config", "event_type":"config_update", "event_time":"20151212T121212Z", "paras":{ "config_content":{ "config_key1":"device config1", "config_key2":"device config2" } } } ] }
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