sdks/python: enrich data with CloudSQL

[mohamedawnallah]

Description

• Add CloudSQLEnrichmentHandler
• Unit Test
• Integration Test
• Update Enrichment Docs

Closes #30773.

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[mohamedawnallah]

Hi @claudevdm,

I think the PR is now ready for review. I’ve run all test cases locally, including the integration tests, and they pass since I’m using a PostgreSQL Cloud SQL managed instance in my Google Cloud for testing.

However, the integration tests currently fail in the CI pipeline because there’s no Cloud SQL testing instance to connect to. It seems like this may require additional setup or administration.

How am I supposed to move this PR forward?

Thanks!

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[mohamedawnallah]

assign set of reviewers

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[claudevdm]

Thank you for your contribution to the Cloud SQL Enrichment Handler. I'd like to share some thoughts about potential improvements:

• Query Flexibility: We should consider expanding the interface to allow users to:

  1. Select specific columns rather than always returning all columns
  2. Apply multiple filtering conditions (e.g., filtering on both customer_id AND region)
  3. Support more complex query conditions beyond simple equality checks

• SQLAlchemy Integration: Given that we're supporting three different database types (MySQL, PostgreSQL, and SQL Server), leveraging SQLAlchemy would:

  1. Provide database-agnostic query building
  2. Handle dialect-specific syntax differences automatically
  3. Offer better protection against SQL injection vulnerabilities

• Batch Processing Support: For performance optimization, we should implement batched queries similar to the BigQuery handler

  beam/sdks/python/apache_beam/transforms/enrichment_handlers/bigquery.py

  Line 180 in 6426f72

  def __call__(self, request: Union[beam.Row, list[beam.Row]], *args, **kwargs):

Could @liferoad and @svetakvsundhar share their thoughts on the user interface design and SQLAlchemy integration?

[github-actions]

Reminder, please take a look at this pr: @liferoad @damccorm

[damccorm]

waiting on author

[github-actions]

Reminder, please take a look at this pr: @liferoad @damccorm

[mohamedawnallah]

Run Python_ML PreCommit 3.10

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[mohamedawnallah]

Hey @claudevdm, Have you got time to review this PR? I have addressed your feedback and I think it is almost there :)