Fix overwrite get_uri for Trino

[guan404ming]

Related Issue

Towards #38195

Why

DbApiHook's get_uri() incorrectly assumes Airflow Connection URIs are valid SQLAlchemy URIs, which fails in complex cases, especially with special characters. For Trino, the connection URI requires proper URL encoding and specific handling of catalog/schema information.

This PR implements a robust get_uri() method in TrinoHook that correctly formats Trino connection URIs with proper URL encoding of special characters.

How

• Implemented get_uri() in TrinoHook with proper URL
• Handled schema information from both schema field and extra field
• Added unit tests for various connection scenarios

reference: https://github.com/trinodb/trino-python-client?tab=readme-ov-file

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[jason810496]

Thanks for the PR!
I left a question regarding whether we really need to override get_uri for TrinoHook, as it seems there’s no special case for it.

[jason810496]

Maybe we could consider implementing a more generic get_uri in DbApiHook.

Yes, indeed. We can create another PR after this one to introduce some private methods in DbApiHook.
( it's fine to have duplicate code in the current one, not to make the scope too large )

For example, comparing the previous MySQL implementation and the current Trino one, we have duplicated logic in:

• uri_prefix
• auth_part
• host_part
• schema_part
• URI concatenation
• extra connection parameters

The DbApiHook.get_uri could leverage these private methods to build the final URI.

We could define private methods for each of these duplicated parts, and allow providers to override only what’s necessary for special cases.

For instance, Trino would only need to override _get_schema_part, MySQL only need to override _get_uri_prefix part.

[guan404ming]

Thanks for looking into this issue and suggestion! It does make sense, to implement common private functions do help reduce code duplicate issue. I would try to open another PR to implement some private func in DbApiHook after this PR!

[jason810496]

After clearing the context, the PR looks good to me, thanks!

[guan404ming]

Thanks!

[amoghrajesh]

CC @eladkal @jason810496 do you think this one's good to land?

[jason810496]

CC @eladkal @jason810496 do you think this one's good to land?

Sure, LGTM to include in current provider release.