fix: add sqlitesessionservice to init py file to fix the import errors

[jawherkh]

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Link to Issue or Description of Change

1. Link to an existing issue (if applicable):

• Closes: N/A
• Related: N/A

2. Or, if no issue exists, describe the change:

Problem:
The SqliteSessionService was implemented but not exposed in the adk.sessions module's __init__.py, making it unavailable for import via the top-level package.

Solution:
Added SqliteSessionService to the __init__.py file's imports and __all__ list, ensuring it can be imported directly from adk.sessions.

Testing Plan

Unit Tests:

• I have added or updated unit tests for my change.
• All unit tests pass locally.

Please include a summary of passed pytest results.

• All existing tests related to session services pass, confirming the import works as expected.

Manual End-to-End (E2E) Tests:

• Verified that SqliteSessionService can now be imported from adk.sessions without errors.

Checklist

• I have read the CONTRIBUTING.md document.
• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have added tests that prove my fix is effective or that my feature works.
• New and existing unit tests pass locally with my changes.
• I have manually tested my changes end-to-end.
• Any dependent changes have been merged and published in downstream modules.

Additional context

This change improves usability by making SqliteSessionService available for direct import from the adk.sessions package. No other code changes were made.

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[gemini-code-assist]

Summary of Changes

Hello @jawherkh, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request resolves an importability issue for the SqliteSessionService by correctly exposing it within the adk.sessions package. This ensures that the service can be directly imported and utilized by consumers of the library, enhancing usability without introducing any new functionality or altering existing logic.

Highlights

• Fix Import Error: The SqliteSessionService was not exposed in the adk.sessions module's __init__.py file, leading to import errors when trying to use it.
• Expose SqliteSessionService: Added SqliteSessionService to the __init__.py file's imports and __all__ list, making it directly importable from adk.sessions.

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[adk-bot]

Response from ADK Triaging Agent

Hello @jawherkh, thank you for your contribution!

Before we can review your pull request, you'll need to sign the Contributor License Agreement (CLA). You can find more information at https://cla.developers.google.com/.

Also, for bug fixes like this, we recommend associating the PR with a GitHub issue. If an issue doesn't exist, please consider creating one to describe the problem this PR is solving.

Thank you!

[gemini-code-assist]

Code Review

This pull request correctly exposes the SqliteSessionService to make it importable from the adk.sessions package. My review includes two suggestions to maintain alphabetical ordering in the __init__.py file, which improves code readability and consistency, following standard Python conventions (PEP 8).

[gemini-code-assist]

To maintain consistency and follow PEP 8 guidelines for import ordering, please sort the local imports alphabetically by module name. The new sqlite_session_service import should be placed between session and state.

Suggested change

	from .session import Session
	from .state import State
	from .vertex_ai_session_service import VertexAiSessionService
	from .sqlite_session_service import SqliteSessionService
	from .session import Session
	from .sqlite_session_service import SqliteSessionService
	from .state import State
	from .vertex_ai_session_service import VertexAiSessionService

[gemini-code-assist]

To maintain consistency and readability, please keep the __all__ list sorted alphabetically. SqliteSessionService should be placed between Session and State.

Suggested change

	'BaseSessionService',
	'DatabaseSessionService',
	'InMemorySessionService',
	'Session',
	'State',
	'VertexAiSessionService',
	'SqliteSessionService',
	'BaseSessionService',
	'DatabaseSessionService',
	'InMemorySessionService',
	'Session',
	'SqliteSessionService',
	'State',
	'VertexAiSessionService',

[ryanaiagent]

Hi @jawherkh Thank you for your contribution! It appears you haven't yet signed the Contributor License Agreement (CLA). Please visit https://cla.developers.google.com/ to complete the signing process. Once the CLA is signed, we'll be able to proceed with the review of your PR. Thank you!

[jawherkh]

@ryanaiagent CLA signed and complete!