Connect Presto with Bold Data Hub

The Bold Data Hub Presto connector loads query results from Presto into Bold Reports^®. Presto is an open-source distributed SQL query engine for fast analytics on large-scale data. Presto lets you query data directly from multiple data sources without moving the data into a separate database.

Connection Properties

The Presto connector in Bold Data Hub reads the following properties from the config section of a YAML file:

connectorname: Presto
connection_type: Presto/Trino
auth_type: none/authentication
host: Hostname or IP address of the Presto server
port: Presto server port
username: Username
password: Password
catalog: Catalog name in Presto
http_scheme: HTTP or HTTPS connection protocol

How do I connect to Presto without authentication?

You connect Bold Data Hub to Presto without authentication by setting auth_type to none in the template.

Example Configuration

The following Bold Data Hub YAML template shows a Presto extractor configuration without authentication:

version: 1.0.1
plugins:
  extractors:
    - name: Presto
      connectorname: Presto
      schemaname: public
      config:
        auth_type: none
        host: presto_servername
        port: 8080
        catalog: postgres
        http_scheme: http/https
      properties:
      metadata:
      select:
        - Employees

How do I connect to Presto with authentication?

You connect Bold Data Hub to a secured Presto cluster by setting auth_type to authentication and adding a username and password.

Example Configuration

The following Bold Data Hub YAML template shows a Presto extractor configuration with authentication:

version: 1.0.1
plugins:
  extractors:
    - name: Presto
      connectorname: Presto
      schemaname: public
      config:
        auth_type: authentication
        host: presto_servername
        port: 8080
        username: presto_username
        password: presto_password
        catalog: postgres
        http_scheme: http/https
      properties:
      metadata:
      select:
        - Employees

How do I connect Presto in Bold Data Hub?

You connect Presto by creating a project in Bold Data Hub and adding the Presto template to it.

Click the Data Hub icon on the Navigation Pane.
Click Add Project and enter a name for the new project.
Select the newly created project and add the Presto template.
Update the required details in the template, using the configuration parameters below.
Click Save and choose the destination to save the pipeline.

Creating a pipeline in Bold Data Hub automatically creates a data source in Bold Reports^®. The Bold Reports^® data source is a live data source to the destination database used in Bold Data Hub.

Configuration Parameters

The Presto template in Bold Data Hub uses these parameters:

Parameters	Description
Auth Type:	Choose `none` for unauthenticated connections and `authentication` for secured Presto clusters.
Host:	Specify the hostname of the Presto server.
Port:	Specify the port number of the Presto server (default is 8080).
Username:	Provide the username to authenticate with the Presto server (required when auth type is authentication)
Password:	Provide the password to authenticate with the Presto server (required when auth type is authentication)
Catalog:	Specify the catalog configured on the Presto server that defines the data source used for querying. Examples: `hive` and `postgres`
HTTP Scheme:	Specify the communication protocol used to connect to the Presto server. Choose `http` for non-SSL connections or `https` for SSL/TLS-secured connections.
Schema Name:	Specify the schema within the selected Presto catalog that contains the tables to be queried.
Select:	Tablename(s): Specify the table name list to load tables from the Presto server.

How do I schedule the Presto pipeline?

You schedule the Presto pipeline in Bold Data Hub from the schedules tab, or you run it on demand.

To configure interval-based scheduling, click the schedules tab, select the created pipeline, click the schedule icon, and configure the schedule.
For an on-demand refresh, click the Run Now button.
Check the schedule history with the history option and the logs.
Click Logs to see whether the run is completed and the data source is created in Bold Reports^®.
Click the Edit DataSource option to view the created tables.