fastapi-gsap/gsap_broker/delegations/registrars/base.py
Tyler King f7c49387c1 feat: absorb llm-principal-broker as gsap_broker/delegations/
Merges the standalone llm-principal-broker (1,132 LOC) into fastapi-gsap
as an in-process module. The previous architecture had two FastAPI
processes where the broker called GSAP over HTTP on every delegation
creation; now the lifecycle code uses GSAP's own async DB engine
directly and inserts AuthorizationContextDB rows in the same
transaction context.

New module: gsap_broker/delegations/
  models.py             Pydantic request/response shapes
  storage.py            DelegationDB SQLModel sharing the GSAP engine
  lifecycle.py          DelegationManager — in-process AC issuance via
                        AuthorizationContextDB.insert (no HTTP self-call)
  cleanup.py            30s background task for stale delegations
  router.py             /delegations/* FastAPI router (4 endpoints)
  registrars/
    base.py             AgentRegistrar Protocol + AgentCredentials
    stub.py             dev-mode no-op
    keycloak.py         Keycloak Admin REST API
    entra.py            Microsoft Entra Agent ID via Graph (lazy import)
    factory.py          driver selection (auto/stub/keycloak/entra)

Wiring:
  app.py mounts the delegations router and starts the cleanup task in
  the existing lifespan context manager.
  settings.py absorbs the keycloak_admin_*, entra_*, and
  agent_registrar fields from the old broker's settings.
  pyproject.toml adds an optional `entra` extra for the msal dep.

Behaviour preservation:
  - Endpoints kept identical: POST /, POST /{id}/revoke, GET /{id}, GET /
  - Chronicle event codes preserved: 0x3001 / 0x3003 / 0x3004
  - DelegationScope defaults unchanged (max_ttl_minutes=60, max_commands=500)
  - Capability ceiling -> capability_mask conversion documented inline

Smoke test: `python -c "from gsap_broker.app import app"` loads cleanly
with 26 routes including the four /delegations/ endpoints.

The standalone llm-principal-broker repo is archived to
~/projects/archive/llm-principal-broker.

Signed-off-by: Tyler King <tking@guildhouse.dev>
2026-04-08 13:37:06 -04:00

36 lines
1 KiB
Python

"""AgentRegistrar protocol — abstract interface for agent identity registration.
Implementations:
KeycloakRegistrar — Keycloak Admin REST API (§4.1)
EntraRegistrar — Microsoft Entra Agent ID platform (§4.2)
StubRegistrar — dev mode without a real IdP
"""
from dataclasses import dataclass
from typing import Protocol, runtime_checkable
@dataclass
class AgentCredentials:
"""Credentials returned after registering an agent identity."""
client_id: str
client_secret: str
agent_display_name: str
idp_backend: str # "keycloak" | "entra" | "stub"
@runtime_checkable
class AgentRegistrar(Protocol):
async def register_agent(
self,
delegation_id: str,
agent_type: str,
delegator_id: str,
display_name: str,
expires_at: str,
metadata: dict | None = None,
) -> AgentCredentials: ...
async def delete_agent(self, client_id: str) -> bool: ...
async def get_agent_token(self, client_id: str) -> str | None: ...