daylily-auth-cognito 2.0.2

Shared Cognito authentication library for FastAPI + Jinja2 web apps

daylily-auth-cognito

daylily-auth-cognito is the standalone Cognito auth repo for Daylily. It publishes the daylily_auth_cognito Python package and the daycog CLI.

The 2.0 line is a breaking refactor with hard boundaries:

• runtime/: JWT verification and FastAPI bearer auth
• browser/: Hosted UI session auth with token-free session storage
• admin/: Cognito pool, app-client, user, password, and federation mutations
• cli/: daycog wiring only
• policy/: email-domain policy helpers

Install

pip install daylily-auth-cognito

For development in this repo:

source ./activate
pytest -q

activate installs the editable repo and the published cli-core-yo==2.0.0 dependency.

Public API

The top-level package is intentionally small:

from daylily_auth_cognito import (
    CognitoTokenVerifier,
    CognitoWebSessionConfig,
    JWKSCache,
    SessionPrincipal,
    clear_session_principal,
    complete_cognito_callback,
    configure_session_middleware,
    create_auth_dependency,
    load_session_principal,
    start_cognito_login,
    store_session_principal,
    verify_m2m_token_with_jwks,
)

Use submodules directly for admin and CLI-specific work. CLI config handling lives under daylily_auth_cognito.cli.config and is CLI-only.

Runtime Example

from daylily_auth_cognito import CognitoTokenVerifier, create_auth_dependency

verifier = CognitoTokenVerifier(
    region="us-west-2",
    user_pool_id="us-west-2_example",
    app_client_id="client-123",
)

current_principal = create_auth_dependency(verifier)

Browser Session Example

from daylily_auth_cognito import CognitoWebSessionConfig, configure_session_middleware

config = CognitoWebSessionConfig(
    domain="auth.example.test",
    client_id="client-123",
    redirect_uri="https://app.example.test/auth/callback",
    logout_uri="https://app.example.test/logout",
    session_secret_key="replace-me",
    session_cookie_name="app_session",
    public_base_url="https://app.example.test",
    server_instance_id="server-1",
)

configure_session_middleware(app, config)

Hosted UI callbacks exchange the authorization code asynchronously in the web path and only persist normalized principal data in the session. Raw OAuth tokens are rejected.

CLI

Activate the repo, then use daycog:

source ./activate
daycog --help
daycog status
daycog auth-config print
daycog setup --help

CLI config remains at ~/.config/daycog/config.yaml.

The flat-file config model is implemented in daylily_auth_cognito.cli.config; its internal config helper is not part of the runtime surface.

Layout

daylily_auth_cognito/
  runtime/
  browser/
  admin/
  cli/
  policy/

Docs

• Implementation Plan
• Migrating to 2.0.0
• 2.0.0 Changelog