Get Last Changed Data¶

Get the last changed data of the specified measurement points of specified devices.

Request Format¶

POST https://{apigw-address}/tsdb-service/v2.1/data/last-changed

Request Parameters (URI)¶

Name	Location (Path/Query)	Required/Optional	Data Type	Description
orgId	Query	Required	String	The organization ID which the asset belongs to. How to get organization ID >>

Request Parameters (Body)¶

Name	Required/Optional	Data Type	Description
assetIds	Required	String	The asset ID. Supports the query of multiple asset IDs, separated by commas. How to get asset ID >>
pointIds	Required	String	The measurement point ID. Supports the query of multiple measurement point IDs, separated by commas. How to get measurement point ID >>
ifWithLocalTime	Optional	Boolean	true = returns data in local time format false (default) = does not return data in local time format
localTimeAccuracy	Optional	Boolean	Specify whether the local time in the returned data should be in millisecond format. Only effective when `ifWithLocalTime=true`. `true` indicates that the local time should be returned in millisecond format, `false` indicates that millisecond format is not required, and the default value is `false`.
localTimeFormat	Optional	Integer	Specify whether the local time value includes time zone information of devices. `0` (default): without time zone information; `1`: with time zone information.
itemFormat	Optional	Integer	Specify the displaying format of the returned device data. Available options are `0`, `1`, and `2`. For the example of each displaying format, see Item Format Example>>

Response Parameters¶

Name	Data Type	Description
items	List<JSONObject>	The list of asset last changed data records. For more information, see items

items¶

Name	Data Type	Description
assetId	String	The asset ID.
timestamp	Long	The data timestamp (UNIX time, accurate to the second).
pointId	Double	This parameter is a variable, where the parameter name in the returned structure represents the identifier of the measurement point, and the parameter value represents the data for that measurement point. The returned data for the same measurement point of the same device will be sorted in ascending order by time.
localtime	String	The data timestamp in local time format (accurate to the second).

Sample¶

Request Sample¶

url: https://{apigw-address}/tsdb-service/v2.1/data/last-changed?orgId=yourOrgId

method: POST

Content-Type: application/json

requestBody:
{
  "pointIds": "yourPointId1,yourPointId2,yourPointId3",
  "ifWithLocalTime": true,
  "assetIds": "yourAssetId1,yourAssetId2",
  "localTimeFormat": 0,
  "localTimeAccuracy": true,
  "itemFormat": 0
}

Return Sample¶

{
  "msg": "OK",
  "code": 0,
  "data": {
    "items": [
      {
        "assetId": "yourAssetId1",
        "yourPointId1": 29,
        "localtime": "2021-01-14 23:29:00.000",
        "timestamp": 1610638140000
      },
      {
        "assetId": "yourAssetId1",
        "yourPointId2": "another_00",
        "localtime": "2021-01-14 23:00:00.000",
        "timestamp": 1610636400000
      },
      {
        "assetId": "yourAssetId1",
        "yourPointId3": 1,
        "localtime": "2021-01-14 23:10:00.000",
        "timestamp": 1610637000000
      },
      {
        "assetId": "yourAssetId2",
        "yourPointId1": 1,
        "localtime": "2021-01-14 23:10:00.000",
        "timestamp": 1610637000000
      },
      {
        "assetId": "yourAssetId2",
        "yourPointId2": 1,
        "localtime": "2021-01-15 07:30:00.000",
        "timestamp": 1610667000000
      },
      {
        "assetId": "yourAssetId2",
        "yourPointId3": 29,
        "localtime": "2021-01-14 23:29:00.000",
        "timestamp": 1610638140000
      }
    ]
  },
  "submsg": ""
}

SDK Samples¶

You can access the `Java SDK Samples<https://github.com/EnvisionIot/sample-code-java/tree/EnOS2.4/tsdbdata>`__for TSDB data service on Github.