Fixing issue with test sample for FastAPI

[Rodrigo Brandão (rodrigobr-msft)]

This pull request refactors the FastAPI sample agent to improve configuration management, authentication, and application setup. The main changes include loading configuration from environment variables, integrating MSAL-based authentication, and updating how the agent application and FastAPI app are initialized.

Configuration and Authentication Improvements:

• Added dotenv integration and load_configuration_from_env to load agent configuration from environment variables, making the setup more flexible and secure.
• Introduced MsalConnectionManager and updated the agent to use MSAL-based authentication, enabling better support for secure connections.
• Added Authorization and JwtAuthorizationMiddleware to the FastAPI app for improved authorization handling. [1] [2]

Application Initialization Updates:

• Refactored agent and adapter initialization to use the loaded configuration and new authentication components.
• Updated the main entry point to add the authorization middleware and set up the agent configuration on app startup.

[Copilot]

Pull request overview

This PR refactors the FastAPI “empty agent” test sample to initialize the agent using environment-based configuration and MSAL authentication, and to wire JWT-based authorization into the FastAPI host so requests can be authorized consistently.

Changes:

• Load agent configuration from environment variables (with dotenv support) and construct shared SDK components (storage, MSAL connection manager, adapter, authorization).
• Update AgentApplication initialization to use the new configuration/authentication components.
• Add/update JWT authorization middleware wiring and app configuration setup for FastAPI.

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[Copilot]

Pull request overview

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