Summary

The test_fault_tolerance.cpp test file requires fault tolerance APIs that are not yet implemented.

Related

• Parent issue: [TEST] Fix disabled tests - Result<T> API migration (ARC-001 Phase 1) #320
• Architecture: ARC-001 Phase 1

Required API Implementation

The test expects the following classes/functions that do not exist:

Classes

• retry_executor<T> - Template class for executing operations with retry logic
  • execute(func) -> result<T>
  • get_metrics() -> retry_metrics
  • reset_metrics()
• fault_tolerance_manager<T> - Template class combining circuit breaker and retry
  • execute(func) -> result<T>
  • execute_with_timeout(func, timeout) -> result<T>
  • get_metrics() -> fault_tolerance_metrics
  • is_healthy() -> result<bool>
• fault_tolerance_config - Configuration for fault tolerance manager

Functions

• global_circuit_breaker_registry() - Global registry for circuit breakers
• global_retry_executor_registry() - Global registry for retry executors
• global_fault_tolerance_registry() - Global registry for fault tolerance managers
• create_exponential_backoff_config(max_attempts, base_delay) - Config factory
• create_fixed_delay_config(max_attempts, delay) - Config factory
• create_fibonacci_backoff_config(max_attempts, base_delay) - Config factory

Configuration Validation

• circuit_breaker_config::validate() -> bool
• retry_config::validate() -> bool
• fault_tolerance_config::validate() -> bool

Enhancements to circuit_breaker

• Return result<T> from execute() instead of throwing exceptions

Tasks

• Implement retry_executor<T> with configurable retry strategies
• Implement fault_tolerance_config
• Implement template fault_tolerance_manager<T>
• Add global registries for all fault tolerance components
• Add config factory functions
• Add config validation methods
• Modify circuit_breaker::execute() to return result<T>
• Enable test in CMakeLists.txt
• Verify all tests pass