Push a Device Message Status Change Notification

Function

After the application calls the API for creating a rule triggering condition (resource is set to device.message.status and event to update), the API for creating a rule action, and the API for modifying a rule triggering condition, and activates a rule, the platform pushes the result to the server specified by the rule when the device message status changes.

URI

POST /HTTP URL determined when the application creates a device message status change notification rule. The AMQP channel does not require the URL.

Request Parameters

**Table 1** Request body parameters
Parameter	Mandatory	Type	Description
resource	Yes	String	Parameter description: subscribed resource name. Set this parameter to device.message.status.
event	Yes	String	Parameter description: subscribed event. Set this parameter to update.
event_time	Yes	String	Parameter description: UTC time when the resource event was generated. The value is in the format of yyyyMMdd'T'HHmmss'Z', for example, 20151212T121212Z. If necessary, convert the time to display in the local time zone format.
event_time_ms	No	String	Parameter description: UTC time when a resource event was generated. The value in the format of yyyy-MM-dd'T'HH:mm:ss.SSS'Z', for example, 2015-12-12T12:12:12.000Z. If necessary, convert the time to display in the local time zone format.
request_id	No	String	Parameter description: message ID, which is specified by the device or generated by the platform, and is used to trace the service process.
notify_data	Yes	DeviceMessageStatusUpdateNotifyDataV5 object	Parameter description: message to push.

**Table 2** DeviceMessageStatusUpdateNotifyDataV5
Parameter	Mandatory	Type	Description
header	Yes	NotifyDataHeader object	Parameter description: message header.
body	Yes	DeviceMessageStatusUpdate object	Parameter description: message body.

**Table 3** NotifyDataHeader
Parameter	Mandatory	Type	Description
app_id	No	String	Parameter description: application ID. Maximum: 256
device_id	No	String	Parameter description: unique device ID, which is allocated by IoTDA during device registration. Maximum: 256
node_id	No	String	Parameter description: device node ID. This parameter is set to the IMEI, MAC address, or serial number. Maximum: 256
product_id	No	String	Parameter description: unique product ID, which is allocated by the platform during product registration. Maximum: 256
gateway_id	No	String	Parameter description: gateway ID, which uniquely identifies a gateway. The gateway ID is the same as the device ID if the device is a directly connected device. If the device is an indirectly connected device, the gateway ID is the device ID of the directly connected device (that is, the gateway) with which it associates. Maximum: 256
tags	No	Array of TagV5DTO objects	Parameter description: list of tags to be bound to a specific resource. Each tag key must be unique in the tag list. Up to 10 tags can be bound to a resource.

**Table 4** TagV5DTO
Parameter	Mandatory	Type	Description
tag_key	Yes	String	Parameter description: tag key, which is unique for a resource. If the specified key already exists, the value of the existing tag is overwritten. If the specified key does not exist, a new tag is added.
tag_value	No	String	Parameter description: tag value.

**Table 5** DeviceMessageStatusUpdate
Parameter	Mandatory	Type	Description
topic	No	String	Parameter description: MQTT topic used for message reporting.
message_id	Yes	String	Parameter description: sequence number of a message, which uniquely identifies a message.
name	No	String	Parameter description: message name.
status	No	String	Parameter description: device message status. Options: PENDING, DELIVERED, TIMEOUT, and FAILED.
error_info	No	ErrorInfoDTO object	Parameter description: message delivery failure information.
timestamp	No	String	Parameter description: UTC when the message was updated. The value is in the format of yyyyMMdd'T'HHmmss'Z', for example, 20151212T121212Z.

**Table 6** ErrorInfoDTO
Parameter	Mandatory	Type	Description
error_code	No	String	Parameter description: error code. IOTDA.014016 indicates that the device is offline. IOTDA.014112 indicates that the device does not subscribe to any topic.
error_msg	No	String	Parameter description: error message. The device is offline or does not subscribe to any topic.

Response Parameters

None

Example Requests

Example of a device message status change notification.

Device message status change notification.

{
  "resource" : "device.message.status",
  "event" : "update",
  "event_time" : "20151212T121212Z",
  "event_time_ms" : "2015-12-12T12:12:12.000Z",
  "request_id" : "3fe58d5e-8697-4849-a165-7db128f7e776",
  "notify_data" : {
    "header" : {
      "device_id" : "d4922d8a-6c8e-4396-852c-164aefa6638f",
      "product_id" : "ABC123456789",
      "app_id" : "d4922d8a-6c8e-4396-852c-164aefa6638f",
      "gateway_id" : "d4922d8a-6c8e-4396-852c-164aefa6638f",
      "node_id" : "ABC123456789",
      "tags" : [ {
        "tag_value" : "testTagValue",
        "tag_key" : "testTagName"
      } ]
    }
  },
  "body" : {
    "error_info" : {
      "error_msg" : "Send to device failed, device not subscribe topic.",
      "error_code" : "IOTDA.014112"
    },
    "name" : "name",
    "topic" : "topic",
    "message_id" : "1235",
    "status" : "DELIVERED",
    "timestamp" : "20151212T121212Z"
  }
}