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Get Asset Latest Data¶

Get the latest data of all measurement points of specified devices.

Operation Permissions¶

Required Authorization	Required Operation Permission
Asset	Read

For more information about resources and required permission, see Policies, Roles and Permissions>>

Using GET Method¶

Request Format¶

GET https://{apigw-address}/tsdb-service/v2.0/latest

Request Parameters (URI)¶

Name	Location (Path/Query)	Mandatory/Optional	Data Type	Description
orgId	Query	Mandatory	String	The organization ID which the asset belongs to. How to get organization ID>>
modelId	Query	Optional	String	The model ID. How to get model ID>>
assetIds	Query	Mandatory	String	The asset ID. Supports the query of multiple asset IDs, separated by commas. How to get asset ID>>
measurepoints	Query	Mandatory	String	The measurement point ID. Supports the query of multiple measurement point IDs, separated by commas. How to get measurement point ID>>
timeWindow	Query	Optional	Integer	Specify the time window for querying the latest data (by minutes). The minimum value is 0. If not specified, no constrain is applied. For example: when timeWindow=n, the data within n minutes from the current time is returned. When timeWindow=0, if the latest data timestamp is later than the current time, the data of the latest timestamp will be returned.
accessKey	Query	Optional	String	The service account for authentication purposes. How to get the accessKey>>
ifWithLocalTime	Query	Optional	Boolean	true = returns data in local time format false (default) = does not return data in local time format
localTimeAccuracy	Query	Optional	Boolean	true = query returns data with millisecond time stamp false (default) = query returns data without millisecond time stamp

Response Parameters ¶

Name	Data Type	Description
data	List<JSONObject>	The list of asset data. The data returned for a single point of a single device is sorted by the data time stamp in ascending order. For more information, see items

items¶

Sample¶

{
        "assetId": "4DXYH7nS",
        "opentsdb_pi_point": 1.1236,
        "timestamp": 1560249312446
}

Parameters¶

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, representing the identifier and data of the measurement point.

Error Codes¶

For description of error codes, see Common Error Codes.

Samples (GET Method)¶

Request Sample¶

url: https://{apigw-address}/tsdb-service/v2.0/latest?orgId=yourOrgId&assetIds=4DXYH7nS&measurepoints=opentsdb_pi_point&timeWindow=&accessKey=accessKey

method: GET

Return Sample¶

{
  "status": 0,
  "requestId": null,
  "msg": "success",
  "submsg": null,
  "data": {
    "items": [
      {
        "assetId": "4DXYH7nS",
        "opentsdb_pi_point": 2.123,
        "timestamp": 1560249532446
      }
    ]
  }
}

Java SDK Sample¶

import com.alibaba.fastjson.JSONObject;
import com.envision.apim.poseidon.config.PConfig;
import com.envision.apim.poseidon.core.Poseidon;
import com.envision.apim.poseidon.request.PoseidonRequest;
import org.junit.Test;

public class GetMethod {

    private static class Request extends PoseidonRequest {

        public void setQueryParam(String key, Object value){
            queryEncodeParams().put(key, value);
        }

        public void setMethod(String method) {
            this.method = method;
        }

        private String method;

        @Override
        public String baseUri() {
            return "";
        }

        @Override
        public String method() {
            return method;
        }
    }

    @Test
    public void GetAssetLatestDataTest(){

        //1. Click Application Registration in the left navigation of the EnOS Management Console.
        //2. Click the application that needs to call the API, and click Basic Information. accessKey and secretKey correspond to AccessKey and SecretKey in EnOS.
        String accessKey = "yourAccessKey";
        String secretKey = "yourSecretKey";

        //Create a request and pass the required parameters into the map that exists in the query. The key is the parameter name and the value is the parameter value.
        Request request = new Request();
        request.setQueryParam("orgId", "yourOrgId");
        request.setQueryParam("timeWindow", 10);
        request.setQueryParam("assetIds", "4DXYH7nS");
        request.setQueryParam("measurepoints", "opentsdb_pi_point");

        request.setMethod("GET");

        try {
            JSONObject response =  Poseidon.config(PConfig.init().appKey(accessKey).appSecret(secretKey).debug())
                    .url("http://apim-gateway/tsdb-service/v2.0/latest")
                    .getResponse(request, JSONObject.class);
            System.out.println(response);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

Using POST Method¶

Request Format¶

POST https://{apigw-address}/tsdb-service/v2.0/latest

Request Parameters (Body)¶

Name	Mandatory/Optional	Data Type	Description
orgId	Mandatory	String	The organization ID which the asset belongs to. How to get organization ID>>
assetIds	Mandatory	String	The asset ID. Supports the query of multiple asset IDs, separated by commas. How to get asset ID>>
measurepoints	Mandatory	String	The measurement point ID. Supports the query of multiple measurement point IDs, separated by commas. How to get measurement point ID>>
timeWindow	Optional	String	Specify the time window for querying the latest data (by minutes). The minimum value is 0. If not specified, no constrain is applied.
accessKey	Optional	String	The service account for authentication purposes. How to get the accessKey>>
ifWithLocalTime	Optional	String	true = returns data in local time format false (default) = does not return data in local time format
localTimeAccuracy	Optional	String	true = query returns data with millisecond time stamp false (default) = query returns data without millisecond time stamp

Response Parameters¶

See description in Response Parameters of the Using GET Method section.

Error Codes¶

For description of error codes, see Common Error Codes.

Sample (POST Method)¶

Request Sample¶

url: https://{apigw-address}/tsdb-service/v2.0/latest

method: POST

Content-Type: multipart/form-data;charset=UTF-8

requestBody:
{
  "orgId": "yourOrgId",
  "measurepoints": "opentsdb_pi_point",
  "timeWindow": 10,
  "assetIds": "4DXYH7nS",
  "accessKey": "accessKey"
}

Return Sample¶

{
  "status": 0,
  "requestId": null,
  "msg": "success",
  "submsg": null,
  "data": {
    "items": [
      {
        "assetId": "4DXYH7nS",
        "opentsdb_pi_point": 2.123,
        "timestamp": 1560249532446
      }
    ]
  }
}

Java SDK Sample¶

import com.alibaba.fastjson.JSONObject;
import com.envision.apim.poseidon.config.PConfig;
import com.envision.apim.poseidon.core.Poseidon;
import com.envision.apim.poseidon.request.PoseidonRequest;
import org.junit.Test;

public class PostMethod {

    private static class Request extends PoseidonRequest {

        public void setFormParam(String key, String value){
            formParams().put(key, value);
        }

        public void setMethod(String method) {
            this.method = method;
        }

        private String method;

        @Override
        public String baseUri() {
            return "";
        }

        @Override
        public String method() {
            return method;
        }
    }

    @Test
    public void GetAssetLatestDataTest(){

        //1. Click Application Registration in the left navigation of the EnOS Management Console.
        //2. Click the application that needs to call the API, and click Basic Information. accessKey and secretKey correspond to AccessKey and SecretKey in EnOS.
        String accessKey = "yourAccessKey";
        String secretKey = "yourSecretKey";

        //Create a request and pass the required parameters into the map that exists in the form. The key is the parameter name and the value is the parameter value.
        Request request = new Request();
        request.setFormParam("orgId", "yourOrgId");
        request.setFormParam("timeWindow", "10");
        request.setFormParam("assetIds", "4DXYH7nS");
        request.setFormParam("measurepoints", "opentsdb_pi_point");

        request.setMethod("POST");

        try {
            JSONObject response =  Poseidon.config(PConfig.init().appKey(accessKey).appSecret(secretKey).debug())
                    .url("http://apim-gateway/tsdb-service/v2.0/latest")
                    .getResponse(request, JSONObject.class);
            System.out.println(response);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}