dbt-extrica

The dbt-extrica adapter allows users to interact with Extrica's Trino Engine, a distributed SQL query engine, using dbt. This adapter is designed to facilitate the use of dbt for transforming and modeling data within Extrica.

Features

• Extrica Compatibility: Compatible with Extrica's Trino Query Engine, allowing users to leverage dbt within Extrica.
• JWT Authentication: Utilizes JWT for secure authentication with Extrica. The adapter handles the generation of JWT tokens behind the scenes via username and password configured in profiles.yml.
• Extrica eliminates complex data-engineering and de-couples migrations to help businesses experience a quantum leap in the insights.

Description

About DBT

dbt (data build tool) is a powerful data transformation workflow tool that facilitates quick and collaborative deployment of analytics code. It follows software engineering best practices such as modularity, continuous integration/deployment (CI/CD), testing, and documentation. With dbt, individuals familiar with SQL can easily build production-grade data pipelines.

Connecting to Multiple Data Sources

Challenges in Limited Connectivity
Default configurations in dbt make it challenging to connect to databases beyond the primary one associated with the project. Many organizations deal with diverse data sources, such as Oracle, Snowflake, SQL Server, Google BigQuery, Delta Lake, Iceberg, AWS Redshift, Vertica, Azure Synapse, MongoDB, AWS S3 and other data sources. Integrating and transforming data from these varied sources efficiently becomes essential for comprehensive analytics.

Solution: Leveraging Trino and Catalogs in Extrica

Extrica's Trino is an advanced query engine that excels in federated queries across multiple data sources and also allows the writeback capabilities to variety of data sources. Its ability to connect to various databases and process SQL queries at scale makes it an ideal solution for organizations dealing with diverse data sources.

Extrica, built on Trino introduces the concept of catalogs to address the challenge of connecting to multiple data sources seamlessly within dbt. Each catalog corresponds to a specific data source, enabling a unified approach to managing and transforming data across various systems.

Connecting to Extrica

Example profiles.yml

Here is a example of a dbt-extrica profile parameters. At a minimum, you need to specify type, method, username, password host, port, schema, catalog and threads.

<profile-name>:
  outputs:
    dev:
      type: extrica
      method: jwt 
      username: [username for jwt auth]
      password: [password for jwt auth]  
      host: [extrica hostname]
      port: [port number]
      schema: [dev_schema]
      catalog: [catalog_name]
      threads: [1 or more]

    prod:
      type: extrica
      method: jwt 
      username: [username for jwt auth]
      password: [password for jwt auth]  
      host: [extrica hostname]
      port: [port number]
      schema: [dev_schema]
      catalog: [catalog_name]
      threads: [1 or more]
  target: dev

Description of Profile Fields

Parameter	Type	Description
type	string	Specifies the type of dbt adapter (Extrica).
method	jwt	Authentication method for JWT authentication.
username	string	Username for JWT authentication. The obtained JWT token is used to initialize a trino.auth.JWTAuthentication object.
password	string	Password for JWT authentication. The obtained JWT token is used to initialize a trino.auth.JWTAuthentication object.
host	string	The host parameter specifies the hostname or IP address of the Trino server.
port	integer	The port parameter specifies the port number on which the Trino server is listening.
schema	string	Schema or database name for the connection.
catalog	string	Name of the catalog representing the data source.
threads	integer	Number of threads for parallel execution of queries. (1 or more

Getting Started

Install dbt-extrica adapter

 pip install  dbt-extrica

Initialize dbt project

dbt init

• Select Adapters : After running the dbt init command, you'll be prompted to select adapters from a list of available adapters. Choose the appropriate adapter for your project.
• Modify Profiles.yml : The dbt init command will create a project structure in current dir and a .dbt folder inside users of your system. Inside .dbt folder, you'll find a profiles.yml file.

Configure Profiles.yml

• Open the profiles.yml file in a text editor.
• Locate the section for your selected adapter and project (e.g., extrica).
• Add the necessary connection details such as host, port, user, password, etc.
• Save and close the profiles.yml file.

Check connection is successful

dbt debug

To run all models use below command

dbt run