Fix #2364: Allow UserMemory to work with custom providers

[devin-ai-integration]

This PR fixes issue #2364 by allowing UserMemory to work with custom providers similar to other memory types.

Changes

• Modified UserMemory to support both Mem0Storage and RAGStorage
• Updated ContextualMemory to work with any provider for user_memory
• Added tests to verify the changes

Testing

• Added specific tests for UserMemory with different providers
• Ran the full test suite to ensure no regressions

Link to Devin run: https://app.devin.ai/sessions/c83cd20fef1347ab90ff3243cb18e415

[devin-ai-integration]

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[joaomdmoura]

Disclaimer: This review was made by a crew of AI Agents.

Code Review Comment for PR #2365

Overview

This PR enhances the UserMemory implementation to accommodate custom memory providers beyond mem0, improving flexibility while retaining backward compatibility. The changes have been implemented with appropriate test coverage and contextual memory adjustments.

File Analysis and Recommendations

1. contextual_memory.py

• Encapsulation Improvement: Consider encapsulating the provider check logic to enhance readability and maintainability. It currently uses a magic string, "mem0", which should be replaced with a constant.
• Suggested Code Improvement:

  MEMORY_PROVIDER_MEM0 = "mem0"  # Define a constant
  
  def _is_mem0_provider(self, storage) -> bool:
      return hasattr(storage, '__class__') and storage.__class__.__name__ == 'Mem0Storage'

• Potential Issues: Ensure all calls to memory-related functions account for various providers, which could lead to format discrepancies if not managed carefully.

2. user_memory.py

• Complex Initialization Logic: The __init__ method contains complex logic that could be simplified. By using a factory method for storage initialization, you can separate concerns and improve readability.
• Missing Type Hints: Adding type hints benefits code maintenance and clarity for future contributors.
• Suggested Code Improvement:

  def _initialize_storage(self, ...):
      if memory_provider == MEMORY_PROVIDER_MEM0:
          return self._initialize_mem0_storage(crew)
      return storage or self._initialize_rag_storage(crew, embedder_config, path)

• Code Organization: Consider creating a dedicated configuration class to better manage the memory configuration and initialization logic.

3. user_memory_test.py

• Testing Coverage: The current tests should be expanded to include edge cases and potential failure scenarios, such as improper configurations and invalid provider types.
• Integration Tests: More integration tests should be implemented to ensure that the UserMemory class works seamlessly with both mem0 and RAG storage providers.
• Suggested Code Improvements:

  def test_user_memory_initialization_errors():
      with pytest.raises(ValueError):
          UserMemory(memory_config={"provider": "invalid_provider"})

• Additional Considerations: Ensure the tests cover all paths and include tests for cases where no memories are found.

General Recommendations:

• Documentation: All new methods should have docstrings explaining their purpose and behavior. Ensure that type hints are added consistently for better code readability.
• Error Handling: Implement robust validation for the memory_config format, and consider logging to track important operations.
• Performance Enhancements: Evaluate adding caching mechanisms for frequently accessed memories and consider batch operations to optimize storage access patterns.

Security Considerations:

1. Validate and sanitize all input data before storage to mitigate risks of injection vulnerabilities.
2. Ensure robust access controls are enforced on memory storage functionalities to prevent unauthorized access.

Conclusion

The modifications in this PR introduce meaningful flexibility and enhance the functionality of the UserMemory system. Implementing the suggested improvements will further develop code clarity, maintainability, and reliability. I appreciate the effort put into this PR and look forward to seeing how these recommendations can be integrated into the final implementation.