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Add implementation status document
- Document completed backend implementation - List remaining frontend and testing tasks - Include architecture diagrams and data flow - Document configuration and endpoints - Track session data structure - Note backward compatibility approach
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MULTI-OIDC-IMPLEMENTATION-STATUS.md
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MULTI-OIDC-IMPLEMENTATION-STATUS.md
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# Multi-OIDC Provider Implementation Status
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**Branch:** `multi-login`
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**Date:** 2024
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**Status:** ✅ Backend Complete - Frontend In Progress
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---
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## Overview
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This document tracks the implementation status of multiple OIDC provider support in API Explorer II, enabling users to choose from different identity providers (OBP-OIDC, Keycloak, Google, GitHub, etc.) at login time.
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---
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## Implementation Summary
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### ✅ Completed (Backend)
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#### 1. Type Definitions
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- [x] **`server/types/oauth2.ts`**
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- `WellKnownUri` - Provider information from OBP API
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- `WellKnownResponse` - Response from `/obp/v5.1.0/well-known`
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- `ProviderStrategy` - Provider configuration
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- `ProviderStatus` - Provider health information
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- `OIDCConfiguration` - OpenID Connect discovery
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- `TokenResponse` - OAuth2 token response
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- `UserInfo` - OIDC UserInfo endpoint response
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#### 2. Core Services
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- [x] **`server/services/OAuth2ClientWithConfig.ts`**
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- Extends arctic `OAuth2Client` with OIDC discovery
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- Stores provider name and OIDC configuration
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- Methods:
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- `initOIDCConfig()` - Fetch and validate OIDC discovery document
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- `getAuthorizationEndpoint()` - Get auth endpoint from config
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- `getTokenEndpoint()` - Get token endpoint from config
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- `getUserInfoEndpoint()` - Get userinfo endpoint from config
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- `exchangeAuthorizationCode()` - Token exchange with PKCE
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- `refreshTokens()` - Refresh access token
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- `isInitialized()` - Check if config loaded
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- [x] **`server/services/OAuth2ProviderFactory.ts`**
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- Strategy pattern for provider configurations
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- Loads strategies from environment variables
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- Supported providers:
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- OBP-OIDC (`VITE_OBP_OAUTH2_*`)
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- Keycloak (`VITE_KEYCLOAK_*`)
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- Google (`VITE_GOOGLE_*`)
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- GitHub (`VITE_GITHUB_*`)
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- Custom OIDC (`VITE_CUSTOM_OIDC_*`)
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- Methods:
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- `initializeProvider()` - Create and initialize OAuth2 client
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- `getConfiguredProviders()` - List available strategies
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- `hasStrategy()` - Check if provider configured
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- [x] **`server/services/OAuth2ProviderManager.ts`**
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- Manages multiple OAuth2 providers
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- Fetches well-known URIs from OBP API
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- Tracks provider health status
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- Performs periodic health checks (60s intervals)
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- Methods:
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- `fetchWellKnownUris()` - Get providers from OBP API
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- `initializeProviders()` - Initialize all providers
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- `getProvider()` - Get OAuth2 client by name
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- `getAvailableProviders()` - List healthy providers
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- `getAllProviderStatus()` - Get status for all providers
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- `startHealthCheck()` - Start monitoring
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- `stopHealthCheck()` - Stop monitoring
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- `retryProvider()` - Retry failed provider
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#### 3. Controllers
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- [x] **`server/controllers/OAuth2ProvidersController.ts`**
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- New endpoint: `GET /api/oauth2/providers`
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- Returns list of available providers with status
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- Used by frontend for provider selection UI
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- [x] **`server/controllers/OAuth2ConnectController.ts`** (Updated)
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- Updated: `GET /api/oauth2/connect?provider=<name>&redirect=<url>`
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- Supports both multi-provider and legacy single-provider mode
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- Multi-provider: Uses provider from query parameter
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- Legacy: Falls back to existing OAuth2Service
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- Generates PKCE parameters (code_verifier, code_challenge, state)
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- Stores provider name in session
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- Redirects to provider's authorization endpoint
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- [x] **`server/controllers/OAuth2CallbackController.ts`** (Updated)
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- Updated: `GET /api/oauth2/callback?code=<code>&state=<state>`
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- Retrieves provider from session
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- Uses correct OAuth2 client for token exchange
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- Validates state (CSRF protection)
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- Exchanges authorization code for tokens
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- Fetches user info from provider
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- Stores tokens and user data in session
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- Supports both multi-provider and legacy modes
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#### 4. Server Initialization
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- [x] **`server/app.ts`** (Updated)
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- Initialize `OAuth2ProviderManager` on startup
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- Fetch providers from OBP API
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- Start health monitoring (60s intervals)
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- Register `OAuth2ProvidersController`
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- Maintain backward compatibility with legacy OAuth2Service
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---
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### 🚧 In Progress (Frontend)
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#### 5. Frontend Components
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- [ ] **`src/components/HeaderNav.vue`** (To be updated)
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- Fetch available providers on mount
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- Display provider selection UI
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- Handle login with selected provider
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- Show provider availability status
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- [ ] **`src/components/ProviderSelector.vue`** (To be created)
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- Modal/dropdown for provider selection
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- Display provider names and status
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- Trigger login with selected provider
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- Responsive design
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---
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### 📋 Not Started
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#### 6. Testing
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- [ ] Unit tests for `OAuth2ClientWithConfig`
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- [ ] Unit tests for `OAuth2ProviderFactory`
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- [ ] Unit tests for `OAuth2ProviderManager`
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- [ ] Integration tests for multi-provider flow
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- [ ] E2E tests for login flow
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#### 7. Documentation
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- [ ] Update README.md with multi-provider setup
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- [ ] Update OAUTH2-README.md
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- [ ] Create migration guide
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- [ ] Update deployment documentation
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---
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## Architecture
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### Data Flow
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```
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1. Server Startup
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├─> OAuth2ProviderManager.initializeProviders()
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├─> Fetch well-known URIs from OBP API (/obp/v5.1.0/well-known)
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├─> For each provider:
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│ ├─> OAuth2ProviderFactory.initializeProvider()
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│ ├─> Create OAuth2ClientWithConfig
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│ ├─> Fetch .well-known/openid-configuration
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│ └─> Store in providers Map
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└─> Start health monitoring (60s intervals)
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2. User Login Flow
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├─> Frontend: Fetch available providers (GET /api/oauth2/providers)
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├─> User selects provider (e.g., "obp-oidc")
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├─> Redirect: /api/oauth2/connect?provider=obp-oidc&redirect=/resource-docs
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├─> OAuth2ConnectController:
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│ ├─> Get OAuth2Client for selected provider
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│ ├─> Generate PKCE (code_verifier, code_challenge, state)
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│ ├─> Store in session (provider, code_verifier, state)
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│ └─> Redirect to provider's authorization endpoint
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├─> User authenticates on OIDC provider
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├─> Callback: /api/oauth2/callback?code=xxx&state=yyy
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└─> OAuth2CallbackController:
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├─> Retrieve provider from session
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├─> Get OAuth2Client for provider
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├─> Validate state (CSRF protection)
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├─> Exchange code for tokens (with PKCE)
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├─> Fetch user info
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├─> Store tokens and user in session
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└─> Redirect to original page
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3. Health Monitoring
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└─> Every 60 seconds:
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├─> For each provider:
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│ ├─> HEAD request to issuer endpoint
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│ └─> Update provider status (available/unavailable)
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└─> Frontend can query status via /api/oauth2/providers
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```
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---
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## Configuration
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### Environment Variables
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```bash
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# OBP-OIDC Provider (Required for OBP-OIDC)
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VITE_OBP_OAUTH2_CLIENT_ID=48ac28e9-9ee3-47fd-8448-69a62764b779
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VITE_OBP_OAUTH2_CLIENT_SECRET=fOTQF7jfg8C74u7ZhSjVQpoBYvD0KpWfM5UsEZBSFFM
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VITE_OBP_OAUTH2_REDIRECT_URL=http://localhost:5173/api/oauth2/callback
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# Keycloak Provider (Optional)
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VITE_KEYCLOAK_CLIENT_ID=obp-api-explorer
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VITE_KEYCLOAK_CLIENT_SECRET=your-keycloak-secret
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VITE_KEYCLOAK_REDIRECT_URL=http://localhost:5173/api/oauth2/callback
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# Google Provider (Optional)
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# VITE_GOOGLE_CLIENT_ID=your-google-client-id
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# VITE_GOOGLE_CLIENT_SECRET=your-google-client-secret
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# VITE_GOOGLE_REDIRECT_URL=http://localhost:5173/api/oauth2/callback
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# GitHub Provider (Optional)
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# VITE_GITHUB_CLIENT_ID=your-github-client-id
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# VITE_GITHUB_CLIENT_SECRET=your-github-client-secret
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# VITE_GITHUB_REDIRECT_URL=http://localhost:5173/api/oauth2/callback
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# Custom OIDC Provider (Optional)
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# VITE_CUSTOM_OIDC_PROVIDER_NAME=my-provider
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# VITE_CUSTOM_OIDC_CLIENT_ID=your-client-id
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# VITE_CUSTOM_OIDC_CLIENT_SECRET=your-client-secret
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# VITE_CUSTOM_OIDC_REDIRECT_URL=http://localhost:5173/api/oauth2/callback
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# Legacy Single-Provider Mode (Backward Compatibility)
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# VITE_OBP_OAUTH2_WELL_KNOWN_URL=http://127.0.0.1:9000/obp-oidc/.well-known/openid-configuration
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```
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### OBP API Configuration
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The multi-provider system fetches available providers from:
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```
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GET /obp/v5.1.0/well-known
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```
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**Expected Response:**
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```json
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{
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"well_known_uris": [
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{
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"provider": "obp-oidc",
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"url": "http://127.0.0.1:9000/obp-oidc/.well-known/openid-configuration"
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},
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{
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"provider": "keycloak",
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"url": "http://127.0.0.1:8180/realms/obp/.well-known/openid-configuration"
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}
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]
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}
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```
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---
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## Endpoints
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### New Endpoints
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| Method | Path | Description |
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|--------|------|-------------|
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| GET | `/api/oauth2/providers` | List available OIDC providers with status |
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### Updated Endpoints
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| Method | Path | Query Parameters | Description |
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|--------|------|------------------|-------------|
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| GET | `/api/oauth2/connect` | `provider` (optional), `redirect` (optional) | Initiate OAuth2 flow with selected provider |
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| GET | `/api/oauth2/callback` | `code`, `state`, `error` (optional) | Handle OAuth2 callback from any provider |
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---
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## Session Data
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### Login Initiation
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```javascript
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session = {
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oauth2_provider: "obp-oidc", // Provider name
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oauth2_code_verifier: "...", // PKCE code verifier
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oauth2_state: "...", // CSRF state token
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oauth2_redirect_page: "/resource-docs" // Redirect after auth
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}
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```
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### After Token Exchange
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```javascript
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session = {
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oauth2_provider: "obp-oidc", // Provider used
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oauth2_access_token: "...", // Access token
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oauth2_refresh_token: "...", // Refresh token
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oauth2_id_token: "...", // ID token (JWT)
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user: {
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username: "john.doe",
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email: "john@example.com",
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name: "John Doe",
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provider: "obp-oidc",
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sub: "uuid-1234"
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}
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}
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```
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---
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## Backward Compatibility
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The implementation maintains full backward compatibility with the existing single-provider OAuth2 system:
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1. **Legacy Environment Variable**: `VITE_OBP_OAUTH2_WELL_KNOWN_URL` still works
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2. **Fallback Behavior**: If no provider parameter is specified, falls back to legacy OAuth2Service
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3. **No Breaking Changes**: Existing deployments continue to work without changes
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4. **Gradual Migration**: Can enable multi-provider incrementally
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---
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## Benefits
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1. ✅ **User Choice** - Users select their preferred identity provider
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2. ✅ **Dynamic Discovery** - Providers discovered from OBP API automatically
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3. ✅ **Health Monitoring** - Real-time provider availability tracking
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4. ✅ **Extensibility** - Add new providers via environment variables only
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5. ✅ **Resilience** - Fallback to available providers if one fails
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6. ✅ **Backward Compatible** - No breaking changes for existing deployments
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---
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## Next Steps
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### Priority 1: Frontend Implementation
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1. Update `HeaderNav.vue` to fetch and display available providers
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2. Create `ProviderSelector.vue` component for provider selection
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3. Test login flow with multiple providers
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4. Handle error states gracefully
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### Priority 2: Testing
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1. Write unit tests for all new services
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2. Create integration tests for multi-provider flow
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3. Add E2E tests for login scenarios
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### Priority 3: Documentation
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1. Update README.md with setup instructions
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2. Document environment variables for each provider
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3. Create migration guide from single to multi-provider
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4. Update deployment documentation
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---
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## Known Issues
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- None currently identified
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---
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## References
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- **Implementation Guide**: `MULTI-OIDC-PROVIDER-IMPLEMENTATION.md`
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- **Executive Summary**: `MULTI-OIDC-PROVIDER-SUMMARY.md`
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- **Flow Diagrams**: `MULTI-OIDC-FLOW-DIAGRAM.md`
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- **OBP-Portal Reference**: `~/Documents/workspace_2024/OBP-Portal`
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- **Branch**: `multi-login`
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---
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## Commits
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1. `3dadca8` - Add multi-OIDC provider backend services
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2. `8b90bb4` - Add multi-OIDC provider controllers and update app initialization
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3. `755dc70` - Fix TypeScript compilation errors in multi-provider implementation
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---
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**Last Updated**: 2024
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**Status**: Backend implementation complete ✅
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