Refactoring and deadlock solution of wazuhDBWrapper

[GabrielEValenzuela]

Related issue
#23301

Objective

This PR aims to overhaul the socketDBWrapper class by implementing a blocking approach to socket operations and converting the class to use a singleton pattern. This refactor enhances the efficiency and manageability of socket interactions throughout our application. Additionally, we have refactored the unit tests to align with these changes and ensure comprehensive coverage and reliability.

Description

• The existing implementation of the socketDBWrapper class was identified as a deadlock, particularly in scenarios with high concurrency and rapid socket operations.
• To address these issues, we have refactored the socketDBWrapper to a blocking model, which simplifies the management of socket operations and ensures that each operation is completed before proceeding. This change is expected to improve the stability and performance of network communications.
• Moreover, we have converted the socketDBWrapper into a singleton to prevent multiple instances from being created. This ensures that socket operations are centralized and managed consistently throughout the application's lifecycle.
• The unit tests for socketDBWrapper were also overhauled to reflect these changes. New tests were added to specifically assess the blocking behavior and the singleton instance management, ensuring that the class functions correctly under various scenarios and that thread safety and singleton properties are maintained.

Quality Assurance

Static Analysis

• The refactored code underwent thorough static analysis to ensure that it adheres to best coding practices and standards. Special attention was paid to thread safety and synchronization mechanisms, given the transition to a blocking approach and singleton usage.

Testing

Unit Testing

• Specific tests were designed to ensure that the singleton instance is properly created and accessed and that no additional instances are instantiated throughout the application's operation.

Integration Testing

N/A

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[sebasfalcone]

Nice work @GabrielEValenzuela!