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Fix(mongodb): Improve connection string validation and error handling (Hacktoberfest) #142

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Fix(mongodb): Improve connection string validation and error handling (Hacktoberfest) #142

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@Hussain-Tinwala
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This PR addresses Issue #118 by implementing robust connection validation and enhanced error handling for MongoDB.

This is a critical bug fix that stabilizes database initialization and provides clear, actionable feedback to the user on connection failure.

Key Changes Implemented

  • URI Validation: Added regex validation to confirm the connection string uses the required mongodb:// or mongodb+srv:// protocols, catching invalid formats early.
  • Enhanced Error Handling: Implemented specific try...except blocks within _create_database_manager to catch pymongo.errors.ConnectionFailure and ConfigurationError.
  • User Feedback: The application now raises a clear, user-friendly MemoriError when the connection fails, instructing the user to check their URI or service status.

This is the contribution for Hacktoberfest 2025!
@Hussain-Tinwala
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Hii @Boburmirzo, I have submitted the PR,
Please review review it and let me know if any further changes are required.
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