Querying Historical Device Data

Typical Scenario

The IoT platform receives and saves service data reported by devices during daily operation. If an NA needs to view the historical data reported by a device to the IoT platform, the NA can call this API to obtain the data.

API Function

This API is used by an NA to query historical data reported by a specified device to the IoT platform based on the device ID.

API Prototype

Method	GET
URL	https://server:port/iocm/app/data/v1.2.0/deviceDataHistory?deviceId={deviceId}&gatewayId={gatewayId}&appId={appId}&pageNo={pageNo}&pageSize={pageSize}&startTime={startTime}&endTime={endTime}
Transport Protocol	HTTPS

Request Parameters

Parameter	Mandatory or Optional	Type	Location	Description
app_key	Mandatory	String	header	Identifies an application that can be accessed on the IoT platform. The value of this parameter is allocated by the IoT platform when the application is created on the platform.
Authorization	Mandatory	String	header	Indicates the authentication information for accessing the IoT platform. The value is Bearer {accessToken}, in which {accessToken} indicates the access token returned by the Authentication API.
appId	Optional	String	query	Identifies an application that can be accessed on the IoT platform. The value of this parameter is allocated by the IoT platform when the application is created on the platform. Set this parameter to the value of appId of the authorized application.
deviceId	Mandatory	String	query	Uniquely identifies a device. The value of this parameter is allocated by the IoT platform during device registration.
gatewayId	Mandatory	String	query	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.
pageNo	Optional	Integer	query	Indicates the page number. The default value is 0, indicating that the first page is queried. You are advised to set pageNo and pageSize to query historical device data.
pageSize	Optional	Integer	query	Indicates the number of records to be displayed on each page. The default value is 1 and the maximum value is 2000. Set this parameter based on the average size of data reported by devices. Ensure that the data package of a single query does not exceed 16 MB, and set the timeout period based on the package size of a single query and network bandwidth.
startTime	Optional	String	query	Indicates the start time. Historical shadow data generated later than the specified start time is queried. The value is in the format of yyyyMMdd'T'HHmmss'Z'. An example value is 20151212T121212Z.
endTime	Optional	String	query	Indicates the end time. Historical shadow data generated earlier than the specified end time is queried. The value is in the format of yyyyMMdd'T'HHmmss'Z'. An example value is 20151212T121212Z.

Response Parameters

Status Code: 200 OK

Parameter	Type	Description
totalCount	Long	Indicates the number of queried records.
pageNo	Long	Indicates the page number.
pageSize	Long	Indicates the number of records on each page.
deviceDataHistoryDTOs	List<DeviceDataHistoryDTO>	Indicates the list of historical device data.

DeviceDataHistoryDTO structure

Parameter	Type	Description
serviceId	String(256)	Identifies a service.
deviceId	String(256)	Uniquely identifies a device. The value of this parameter is allocated by the IoT platform during device registration.
gatewayId	String(256)	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.
appId	String(256)	Identifies the application to which the device belongs.
data	JsonObject	Indicates the data reported by the device.
timestamp	String(256)	Indicates the timestamp when the data is reported. The value is in the format of yyyyMMdd'T'HHmmss'Z'. An example value is 20151212T121212Z.

Request Example

Method: GET
Request:
https://server:port/iocm/app/data/v1.2.0/deviceDataHistory?deviceId={deviceId}&gatewayId={gatewayId}&appId={appId}&pageNo={pageNo}&pageSize={pageSize}&startTime={startTime}&endTime={endTime}
Header:
app_key: ******
Authorization: Bearer *****
Content-Type: application/json

Response Example

Response:
Status Code: 200 OK
Content-Type: application/json
Body:
{
    "totalCount":"****",
    "pageNo":"*****",
    "pageSize":"*****",
    "deviceDataHistoryDTOs":[
        {
            "serviceId":"*****",
            "deviceId":"*****",
            "gatewayId":"*****",
            "appId":"*****",
            "data":"*****",
            "timestamp":"*****"
        }
    ]
}

Error Codes

HTTP Status Code	Error Code	Error Description	Remarks
200	100418	The deviceData is not existed.	The device data does not exist. Recommended handling: If deviceId carried in the request is incorrect, check whether deviceId belongs to appId or whether deviceId is incorrect. Check whether appId carried in the header contains deviceId. If the URL contains the optional parameter appId, check whether the value of appId is correct.
400	100216	The application input is invalid.	The application input is invalid. Recommended handling: Check whether parameters in the API request are correct by referring to the request parameter description. For example, check whether the value of pageSize exceeds 2000.
400	100419	The deviceId and gatewayId can't be both null.	The deviceId and gatewayId parameters cannot be null at the same time. Recommended handling: Check whether deviceId or gatewayId is set.
403	100203	The application is not existed.	The application does not exist. Recommended handling: Check whether appId carried in the HTTP request header is correct. Check whether appId in the request path (URL) is correct.
403	100217	The application hasn't been authorized.	The application has not been authorized. Recommended handling: In scenarios where applications are not authorized, ensure that request parameter appId is null.
403	1010009	app throttle exceed.	The NA calls the API at a frequency that exceeds the flow control threshold (100 calls per minute by default). Recommended handling: Contact IoT platform maintenance personnel to adjust the flow control threshold or control the API call frequency.
403	1010005	App_key or access_token is invalid.	The access token is invalid. Recommended handling: Check whether accessToken carried in the API request is correct.
500	100203	The application is not existed.	The application does not exist. Recommended handling: Check whether appId carried in the HTTP request header is correct. Check whether appId in the request path (URL) is correct.
500	50252	Internal server error.	An internal server error occurs. Recommended handling: An internal error occurs on the IoT platform. Contact IoT platform maintenance personnel.