Connections Pane: AWS Redshift Support

[dfalbel]

Addresses #10432

Release Notes

New Features

• Added support for AWS Redshift for the Connections Pane (Connections Pane: Amazon Redshift python connector #10432).

Bug Fixes

• N/A

QA Notes

Creating a Redshift connection require some configuration, and there are possibly multiple different ways to setup authentication dependning on how the Redshift cluster is set.

The way that worked for me is:

1. Set up awscli, (we have some internal instructions ) then run:

aws sso login --profile <profile>

The profile must have access to the Redshift cluster that you plan to use.

2. Setting up a Redshift cluster:

The easiest way to setup a Redshift Cluster is creating a Serverless Redshihft cluster.
Go to the AWS dashboard -> AWS Redshift -> Serverless Dashboard -> Create Workgroup

Follow the steps. Remember to use only public security groups if you want to be able to access it locally.

After creating the workgroup, you should be able to acess the query editor from the AWS console. Make sure you can make some queries from there.

You'll also be able to find the workgrourp endpoint in the workgroup dashboard. This is what is used for the connection string.

There may be easier or better ways for this, specially if setting CI jobs. See slack discussion.

3. Connect from Python

A connection can be created by installing the redshift_connector:

pip install redshift_connector

The create a connection with:

conn: redshift_connector.Connection = redshift_connector.connect(
    iam=True,
    database='dev',
    host='<workgroup endpoint>',
    profile='<profile you setup in 1>'
 )

@:connections

[github-actions]

E2E Tests 🚀
This PR will run tests tagged with: @:critical @:connections

^{readme  valid tags}

[Copilot]

Pull Request Overview

This PR adds AWS Redshift support to the Connections Pane, allowing users to connect to and browse Redshift databases within Positron.

Key Changes:

• Implemented RedshiftConnection class with support for listing databases, schemas, tables/views, and fields
• Added comprehensive test coverage for Redshift connections following the established testing patterns
• Added redshift_connector dependency to test requirements

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 6 comments.

File	Description
extensions/positron-python/python_files/posit/positron/connections.py	Adds RedshiftConnection class with methods for connection management, object listing, and data preview. Updates connection wrapping logic to recognize Redshift connections.
extensions/positron-python/python_files/posit/positron/tests/test_connections.py	Adds TestRedshiftConnectionsService class with comprehensive tests for connection registration, data containment checks, icon retrieval, object listing, field listing, and preview functionality.
extensions/positron-python/python_files/posit/test-requirements.txt	Adds redshift_connector as a test dependency.
extensions/positron-python/python_files/posit/pinned-test-requirements.txt	Pins redshift_connector to version 2.1.10 for Python versions < 3.14.