[BDLS] Implemented Dynamic Membership Management with Certificate Validation and Retry Logic

[Sukuna0007Abhi]

Description

Provides dynamic membership management for BDLS consensus so that orderer nodes can be added and removed via configuration updates.

Changes

• Introduce configUpdate() function to manage orderer membership changes
• Introduce certificate validation for new consenters with error handling
• Introduce connection retry logic with exponential backoff
• Introduce graceful node removal with cleanup
• Introduce unit tests for membership changes in chain_test.go
• Introduce integration test documentation in TESTING.md

Implementation Details

• Certificate validation for secure node addition
• Backoff-based connection retry for reliability enhancement
• Node removal without network disruption
• Communication layer reconfiguration for cluster stability
• Error handling in Fabric patterns
• Logging with visibility into operations

Test Coverage

Unit Tests (chain_test.go):

• Verify consenter certificate validation
• Verify node addition and removal scenarios
• Verify communication reconfiguration
• Verify error handling paths

Integration Tests (TESTING.md):

• Network configuration with 4 nodes
• Dynamic node addition testing
• Node removal testing
• Certificate validation testing
• Connection establishment
• Consensus continuation

Documentation

• Included detailed testing instructions in TESTING.md
• Included code comments detailing the implementation
• Included error handling and recovery procedures in documentation

Related Issue

Resolves #24

Checklist

• Code adheres to project style guidelines
• Unit tests included with adequate coverage
• Integration tests documented
• Code comments and documentation updated
• Error paths tested and handled
• Signed-off all commits with DCO
• Updated relevant documentation
• CI tests pass
• No new linting issues introduced

Dependencies

• No new external dependencies added
• Utilizes existing Fabric crypto and networking primitives

Testing Instructions

See TESTING.md for comprehensive instructions to:

1. Begin a test network
2. Add new nodes
3. Delete nodes
4. Validate operations
5. Debug common issues

Additional Notes

• Implementation patterns follow etcdraft consensus
• Error handling follows Fabric practice
• Backward compatibility is maintained
• No breaking changes added

Signed-off-by: Abhijit(Sukuna0007Abhi) [email protected]

[ahmed82]

@Sukuna0007Abhi, Thank you for contributing. Please attend the next Community Call on May 22 or let me know so I can review your contribution with you on a one-to-one call.