Skip to content

Implement BridgePoolAssignment Parser Component

thedivyanshupabiarequested to merge
thedivyanshupabia/library.rs:main into main

Overview

This merge request implements the BridgePoolAssignment parser component to address Issue #2. The implementation enables parsing of bridge pool assignment files published by BridgeDB, which describe how bridges are assigned to different distribution pools.

Implementation Details

New Components

  • BridgePoolAssignment trait - Defines the interface for working with bridge pool assignments
  • BridgePoolAssignmentImpl struct - Provides the concrete implementation for parsing assignments
  • Comprehensive test suite - Verifies functionality with both synthetic test cases and real data

Features

The implementation successfully parses bridge pool assignment files, extracting:

  • Publication timestamp
  • Bridge fingerprints (SHA-1 hashes)
  • Complete assignment details for each bridge:
    • Distribution method (https, email, moat, telegram, lox, settings, reserved, none)
    • Transport type (vanilla, obfs4, webtunnel)
    • IP version support (IPv4, IPv6, dual stack)
    • Optional port specifications
    • Distribution status
    • State information (untested, dysfunctional)
    • Bandwidth metrics with ratio values
    • Special attributes (blocklist regions)

Design Approach

The implementation follows the established pattern in the codebase:

  • Uses trait-based design with separate interface and implementation files
  • Leverages the existing DescriptorImpl base for common functionality
  • Follows consistent error handling patterns
  • Maintains compatibility with the original Java metrics-lib implementation

Testing

Testing is thorough and includes:

  • Basic test cases with small, constructed examples
  • Error case handling for invalid input
  • Empty file handling
  • Integration test with a full bridge pool assignment file containing thousands of entries
  • Specific verification of 20+ diverse entry types to ensure all format variations are handled correctly

All tests pass successfully, verifying the implementation's accuracy and robustness.

Limitations and Future Work

As discussed in my comment on the issue, this implementation focuses on parsing and in-memory representation of the data. The second part of the issue (exporting to database/CSV/Parquet) will be addressed in a separate merge request.

Related Links

Checklist

  • Implementation follows project architecture patterns
  • Code is properly documented with comments
  • Comprehensive test suite is included
  • Tests pass successfully
  • No new warnings introduced
  • Database/export functionality (to be implemented in future MR)

Merge request reports