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This is the implementation of the TDEngine data handler for MindsDB. TDengine is an open source, high-performance, cloud native time-series database optimized for Internet of Things (IoT), Connected Cars, and Industrial IoT. It enables efficient, real-time data ingestion, processing, and monitoring of TB and even PB scale data per day, generated by billions of sensors and data collectors. TDengine differentiates itself from other time-series databases with numerous advantages, such as high performance, simplified solution, cloud-native, ease of use, easy data analytics, and open-source.

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Prerequisites

Before proceeding, ensure the following prerequisites are met:
  1. Install MindsDB locally via Docker or use MindsDB Cloud.
  2. To connect TDengine to MindsDB, install the required dependencies following this instruction.
  3. Install or ensure access to TDengine.

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Implementation

This handler is implemented using taos/taosrest, a Python library that allows you to use Python code to run SQL commands on the TDEngine server. The required arguments to establish a connection are as follows:
  • user is the username associated with the server.
  • password is the password to authenticate your access.
  • url is the URL to the TDEngine server. For local server, the URL is localhost:6041 by default.
  • token is the unique token provided while using TDEngine Cloud.
  • database is the database name to be connected.

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Usage

In order to make use of this handler and connect to the TDEngine database in MindsDB, the following syntax can be used: 
CREATE DATABASE tdengine_datasource
WITH
    ENGINE = 'tdengine',
    PARAMETERS = {
    "user": "tdengine_user",
    "password": "password",
    "url": "localhost:6041",
    "token": "token",
    "database": "tdengine_db"
    };
You can specify token instead of user and password while using TDEngine.
You can use this established connection to query your table as follows: 
SELECT *
FROM tdengine_datasource.demo_table;
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