About TSDB Data Service API V2.0¶

This is an older version of the API. For the latest version, see V2.1.

The EnOS Time Series Database (TSDB) data service provides the interfaces listed below for developers to invoke for data and application development. EnOS TSDB provides efficient and stable storage management for time series data that is ingested from devices or generated by the stream processing engine. Currently, EnOS TSDB can store the following types of asset data:

Original data of AI measurement points
Minute-level normalized data of AI measurement points
Device status (DI) data
Device status duration data
Generic data
Power consumption/production data

For more information about TSDB storage, see Time Series Data Management.

Refer to the table below for the list of APIs, and whether they can be used by EnOS™ Cloud and EnOS™ Edge.

API List¶

API Name	Description	EnOS Cloud	EnOS Edge
Filter Asset Latest Data	Filter and query the latest data of a single measurement point for multiple devices.	√	√
Get Asset AI Data with Aggregation Logic	Get the original AI data (or aggregated data) of a specified measurement point of a specified device within a certain period.	√	√
Get Asset AI Raw Data	Get the original AI data of a specified measurement point of a specified device within a certain period.	√	√
Get Asset Current Day Electric Power	Get the accumulated power consumption/production data of a specified device from 00:00 (local time) to current time.	√	√
Get Asset DI Data	Get the status (DI) data of a specified device within a certain period.	√	√
Get Asset DI Data Duration	Get the duration of different status (DI) data of a specified device within a certain period.	√	√
Get Asset Electric Power Data	Get the power consumption/production data of a specified device within a certain period.	√	√
Get Asset Generic Data	Get the generic data of a specified measurement point of a specified device within a certain period.	√	√
Get Asset Latest Data	Get the latest data of all measurement points of a specified device.	√	√
Get Asset Raw Data By Time Range	Get the original data of a specified measurement point of a specified device within a certain period (including AI, DI, and Generic data types).	√	√

Request Method¶

TSDB Data Service supports both the GET and POST methods:

GET: The request parameters are included in the request URL, which can be used for requests with less parameters.
POST: The request parameters are included in the request body, which can be used for requests with long parameters (e.g., when querying data of multiple assets).

The API documentation provides reference for both the GET and POST methods.

Recommend Poseidon version:

<dependency>
    <groupId>com.envisioniot</groupId>
    <artifactId>apim-poseidon</artifactId>
    <version>0.1.14</version>
</dependency>

Common Error Codes¶

Code	Error Information	Description
0	Success	API request is successful.
400	Invalid param error	Parameters or parameter values are not valid. For details, refer to the error messages.
701	Sata service ERROR	An exception occurs with the data service.
702	An error occurred when execute query in data service.	Data query failed due to error of the data service. Please try again later.