implement-idp-integration

A swappable identity provider integration uses an IdpAdapter interface with provider-specific auto-configurations activated by a configuration property. This enables swapping providers without code changes, exposing unified REST endpoints for login, token exchange, MFA, and session control across different vendors.

Provider-agnostic authentication abstracts vendor-specific OAuth2 and OpenID Connect protocols behind a single port/adapter framework. The IdpAdapter interface isolates provider logic, allowing the application to interact uniformly with Keycloak, Cognito, Azure AD, or internal DB authentication through consistent APIs.

Yes, migrating between identity providers like Cognito and Azure AD is achieved by changing the provider configuration property. The auto-configuration activates the corresponding adapter, ensuring consistent REST endpoints, token management, and admin workflows without requiring backend code modifications.

Yes, the identity provider adapter handles token introspection and MFA across different vendors. It orchestrates unified authentication, token exchange, user management, and session controls through the reactive REST controller, ensuring consistent behavior regardless of the underlying provider.

Configuring a specific identity provider requires setting the provider property in the application environment. Starting the application triggers provider-specific auto-configuration, enabling IdP flows like login, refresh, introspection, user info, and admin APIs through the unified controller.

Use a provider-agnostic identity provider adapter when a deployment requires supporting multiple vendors or internal DB authentication, needing consistent token management and session orchestration. Direct OAuth2 integration is less suitable when anticipating future provider migration or requiring unified admin workflows.