# Feature Flag Bridge (Multi-Provider)

## Module
ReleaseOrchestrator

## Status
IMPLEMENTED

## Description
Feature flag bridge integrating with external providers (LaunchDarkly, Split, Unleash, Flagsmith, ConfigCat) for progressive delivery flag-based rollouts coordinated with the release orchestrator.

## Implementation Details
- **Modules**: `src/ReleaseOrchestrator/__Libraries/StellaOps.ReleaseOrchestrator.Progressive/FeatureFlags/`
- **Key Classes**:
  - `FeatureFlagBridge` (`src/ReleaseOrchestrator/__Libraries/StellaOps.ReleaseOrchestrator.Progressive/FeatureFlags/FeatureFlagBridge.cs`) - coordinates flag-based rollouts with external providers
- **Interfaces**: `IFeatureFlagProvider` (provider abstraction for LaunchDarkly, Split, Unleash, Flagsmith, ConfigCat)
- **Source**: SPRINT_20260117_035

## E2E Test Plan
- [ ] Register an `IFeatureFlagProvider` and verify `FeatureFlagBridge` discovers and connects to it
- [ ] Create a flag-based rollout via the bridge and verify the provider receives the flag configuration
- [ ] Toggle a feature flag and verify the bridge propagates the state change to the progressive delivery pipeline
- [ ] Verify multi-provider scenario: register multiple providers and confirm the bridge routes flag operations correctly
- [ ] Verify error handling when a provider is unreachable or returns an error