Nabs.Launchpad.Core.FeatureFlags 10.0.273

Nabs.Launchpad.Core.FeatureFlags

Nabs.Launchpad.Core.FeatureFlags provides a lightweight feature-flag foundation for Launchpad apps on top of Microsoft.FeatureManagement.

It includes:

• DI registration helpers
• Pluggable feature definition providers
• Feature flag API endpoint classes (query + admin operations)
• An in-memory provider for development and testing

Installation

dotnet add package Nabs.Launchpad.Core.FeatureFlags

Quick Start

Register feature flags in Program.cs:

builder.Services.AddNabsFeatureFlags();

Use a custom configuration section:

builder.Services.AddNabsFeatureFlags(options =>
	options.ConfigurationSectionName = "MyFlags");

Use a custom definition provider:

builder.Services
	.AddNabsFeatureFlags()
	.WithDefinitionProvider<InMemoryFeatureDefinitionProvider>();

API Overview

Core Types

• NabsFeatureFlagsServiceCollectionExtensions
  • AddNabsFeatureFlags()
  • AddNabsFeatureFlags(Action<NabsFeatureFlagsOptions>)
• NabsFeatureFlagsBuilder
  • WithDefinitionProvider<TProvider>()
  • WithDefinitionProvider(IFeatureDefinitionProvider)
• NabsFeatureFlagsOptions
  • ConfigurationSectionName (default: FeatureManagement)
• FeatureFlag and FeatureFlagSession
• IFeatureFlagStore
  • UpsertAsync(...)
  • DeleteAsync(...)

Built-in Definition Providers

• InMemoryFeatureDefinitionProvider (development/test friendly)
• OrleansFeatureDefinitionProvider (stub for Orleans-backed implementation)

Endpoint Classes

This package exposes endpoint classes (derived from NabsEndpointBase) you can register in your API layer.

Query Endpoints

• GET /api/feature-flags → GetAllFeatureFlagsEndpoint
• GET /api/feature-flags/{name} → GetFeatureFlagEndpoint
• GET /api/feature-flags/{name}/enabled → IsFeatureFlagEnabledEndpoint

Admin Endpoints

• PUT /api/feature-flags → UpsertFeatureFlagEndpoint
• POST /api/feature-flags/{name}/enable → EnableFeatureFlagEndpoint
• POST /api/feature-flags/{name}/disable → DisableFeatureFlagEndpoint
• DELETE /api/feature-flags/{name} → DeleteFeatureFlagEndpoint

Notes

• Admin endpoints depend on IFeatureFlagStore for persistence operations.
• InMemoryFeatureDefinitionProvider is ideal for local development and tests, but not a production persistence layer.
• Custom providers can replace the default IFeatureDefinitionProvider registration via the fluent builder.