First commit

apps/agent_gateway/.env.example

@@ -0,0 +1,35 @@
+APP_NAME=agent-gateway-global-supervisor
+APP_ENV=local
+LOG_LEVEL=INFO
+API_HOST=0.0.0.0
+API_PORT=8010
+CORS_ORIGINS=http://localhost:5173
+
+BACKENDS_CONFIG_PATH=./config/backends.yaml
+GLOBAL_ROUTING_MODE=hybrid
+GLOBAL_KEEP_ACTIVE_BACKEND=true
+GLOBAL_USE_SUPERVISOR_ON_CONFLICT=true
+GLOBAL_MIN_ROUTER_CONFIDENCE=0.55
+GLOBAL_SESSION_TTL_SECONDS=3600
+BACKEND_TIMEOUT_SECONDS=120
+
+# Para o supervisor global. Em dev, use mock; em produção, use oci_openai/openai_compatible.
+LLM_PROVIDER=mock
+LLM_TEMPERATURE=0
+LLM_MAX_TOKENS=700
+LLM_TIMEOUT_SECONDS=60
+OCI_GENAI_BASE_URL=https://inference.generativeai.sa-saopaulo-1.oci.oraclecloud.com/openai/v1
+OCI_GENAI_MODEL=openai.gpt-4.1
+OCI_GENAI_API_KEY=
+
+# Analytics do próprio gateway
+ENABLE_ANALYTICS=false
+ANALYTICS_PROVIDERS=oci_streaming,pubsub
+GCP_PUBSUB_TOPIC_PATH=
+AGENT_PUBSUB_TOPIC=
+GCP_PROJECT_ID=
+GCP_PUBSUB_TOPIC=
+ENABLE_OCI_STREAMING=false
+OCI_STREAM_ENDPOINT=
+OCI_STREAM_OCID=
+OCI_STREAM_PARTITION_KEY=agent-gateway-events

apps/agent_gateway/Dockerfile

@@ -0,0 +1,6 @@
+FROM python:3.12-slim
+WORKDIR /app
+COPY agent_framework /agent_framework
+COPY agent_gateway /app
+RUN pip install --no-cache-dir -e /agent_framework -r requirements.txt
+CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8010"]

apps/agent_gateway/README.md

@@ -0,0 +1,73 @@
+# Agent Gateway — Global Supervisor
+
+Este serviço roteia uma mesma conversa entre vários backends de agentes independentes, todos usando o `agent_framework`.
+
+## Papel do Gateway
+
+```text
+Frontend
+  ↓
+Agent Gateway / Global Supervisor
+  ↓
+Backend Contas | Backend Ofertas | Backend Suporte | ...
+```
+
+O Gateway não executa a lógica de negócio dos agentes. Ele decide **qual backend** deve receber a mensagem e encaminha a requisição para o endpoint `/gateway/message` do backend escolhido.
+
+## Modos de roteamento
+
+- `router`: usa regras, keywords e domínios do `config/backends.yaml`.
+- `supervisor`: usa LLM para escolher o backend.
+- `hybrid`: mantém o backend ativo quando a mensagem parece continuação; usa regras; chama LLM em ambiguidade.
+
+## Como subir localmente
+
+```bash
+cd agent_gateway
+cp .env.example .env
+export PYTHONPATH=../agent_framework/src:.
+uvicorn app.main:app --host 0.0.0.0 --port 8010 --reload
+```
+
+Suba seus backends nas portas definidas em `config/backends.yaml`.
+
+## Teste de rota
+
+```bash
+curl -X POST http://localhost:8010/debug/route \
+  -H 'content-type: application/json' \
+  -d '{"channel":"web","payload":{"text":"Minha fatura veio alta","session_id":"s1"}}'
+```
+
+## Enviar mensagem
+
+```bash
+curl -X POST http://localhost:8010/gateway/message \
+  -H 'content-type: application/json' \
+  -d '{"channel":"web","payload":{"text":"Minha fatura veio alta","session_id":"s1"}}'
+```
+
+## Handoff entre backends
+
+Um backend pode solicitar troca retornando no `metadata`:
+
+```json
+{
+  "metadata": {
+    "handover_backend": "ofertas"
+  }
+}
+```
+
+O Gateway chamará automaticamente o novo backend.
+
+## IC/NOC
+
+O Gateway emite eventos de observabilidade:
+
+- `IC.GLOBAL_GATEWAY_RECEIVED`
+- `IC.GLOBAL_BACKEND_SELECTED`
+- `IC.GLOBAL_BACKEND_HANDOVER`
+- `IC.GLOBAL_GATEWAY_COMPLETED`
+- `NOC.005` em falhas
+- `NOC.006` em conclusão HTTP

apps/agent_gateway/app/main.py

@@ -0,0 +1,326 @@
+from __future__ import annotations
+
+import logging
+import time
+from uuid import uuid4
+
+from fastapi import FastAPI, HTTPException, Request
+from fastapi.middleware.cors import CORSMiddleware
+from pydantic import BaseModel, Field
+
+from agent_framework.analytics.factory import create_analytics_publisher
+from agent_framework.global_supervisor import (
+    BackendClient,
+    BackendRegistry,
+    GlobalRouteRequest,
+    GlobalSupervisorRouter,
+    InMemoryGlobalSessionStore,
+)
+from agent_framework.llm.providers import create_llm
+from agent_framework.observability.observer import AgentObserver
+
+from app.settings import settings
+
+logging.basicConfig(level=settings.LOG_LEVEL)
+logger = logging.getLogger("agent_gateway")
+
+app = FastAPI(title="Agent Gateway - Global Supervisor")
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=[o.strip() for o in settings.CORS_ORIGINS.split(",")],
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+registry = BackendRegistry.from_yaml(settings.BACKENDS_CONFIG_PATH)
+analytics = create_analytics_publisher(settings)
+observer = AgentObserver(analytics=analytics)
+llm = create_llm(settings)
+session_store = InMemoryGlobalSessionStore(ttl_seconds=settings.GLOBAL_SESSION_TTL_SECONDS)
+router = GlobalSupervisorRouter(
+    registry=registry,
+    llm=llm if settings.GLOBAL_ROUTING_MODE in {"supervisor", "hybrid"} else None,
+    session_store=session_store,
+    mode=settings.GLOBAL_ROUTING_MODE,
+    keep_active_backend=settings.GLOBAL_KEEP_ACTIVE_BACKEND,
+    use_supervisor_on_conflict=settings.GLOBAL_USE_SUPERVISOR_ON_CONFLICT,
+    min_router_confidence=settings.GLOBAL_MIN_ROUTER_CONFIDENCE,
+)
+backend_client = BackendClient(timeout_seconds=settings.BACKEND_TIMEOUT_SECONDS)
+
+
+class GatewayRequest(BaseModel):
+    channel: str = "web"
+    payload: dict = Field(default_factory=dict)
+    tenant_id: str | None = None
+    agent_id: str | None = None
+    backend_id: str | None = None
+    session_id: str | None = None
+    metadata: dict = Field(default_factory=dict)
+
+
+def _session_id(req: GatewayRequest) -> str:
+    return (
+        req.session_id
+        or req.payload.get("session_id")
+        or req.payload.get("conversation_key")
+        or req.payload.get("original_session_id")
+        or str(uuid4())
+    )
+
+
+def _as_backend_request(req: GatewayRequest, session_id: str) -> dict:
+    # Mantém o contrato do agent_template_backend: {channel, payload, agent_id, tenant_id}
+    payload = dict(req.payload or {})
+    payload.setdefault("session_id", session_id)
+    return {
+        "channel": req.channel,
+        "payload": payload,
+        "agent_id": req.agent_id,
+        "tenant_id": req.tenant_id or payload.get("tenant_id") or "default",
+    }
+
+
+@app.middleware("http")
+async def noc_middleware(request: Request, call_next):
+    started = time.time()
+    try:
+        response = await call_next(request)
+        await observer.emit_noc("006", {"component": "agent_gateway", "path": request.url.path, "status_code": response.status_code, "duration_ms": int((time.time() - started) * 1000)})
+        return response
+    except Exception as exc:
+        await observer.emit_noc("005", {"component": "agent_gateway", "path": request.url.path, "error": str(exc), "duration_ms": int((time.time() - started) * 1000)})
+        raise
+
+
+@app.get("/health")
+async def health():
+    return {
+        "status": "ok",
+        "app": settings.APP_NAME,
+        "routing_mode": settings.GLOBAL_ROUTING_MODE,
+        "backends": [b.backend_id for b in registry.list()],
+        "llm_provider": settings.LLM_PROVIDER,
+    }
+
+
+@app.get("/backends")
+async def backends():
+    return registry.as_dict()
+
+
+@app.get("/backends/health")
+async def backends_health():
+    results = []
+    for backend in registry.list():
+        results.append(await backend_client.health(backend))
+    return {"results": results}
+
+
+@app.post("/debug/route")
+async def debug_route(req: GatewayRequest):
+    session_id = _session_id(req)
+    route_req = GlobalRouteRequest(
+        channel=req.channel,
+        payload=req.payload,
+        tenant_id=req.tenant_id,
+        session_id=session_id,
+        force_backend=req.backend_id,
+        metadata=req.metadata,
+    )
+    decision = await router.route(route_req)
+    return decision.model_dump(mode="json")
+
+
+@app.get("/debug/sessions")
+async def debug_sessions():
+    return await session_store.dump()
+
+
+@app.post("/gateway/message")
+async def gateway_message(req: GatewayRequest):
+    started = time.time()
+    session_id = _session_id(req)
+    tenant_id = req.tenant_id or req.payload.get("tenant_id") or "default"
+    await observer.emit_ic("GLOBAL_GATEWAY_RECEIVED", {"session_id": session_id, "tenant_id": tenant_id, "channel": req.channel})
+    route_req = GlobalRouteRequest(
+        channel=req.channel,
+        payload=req.payload,
+        tenant_id=tenant_id,
+        session_id=session_id,
+        force_backend=req.backend_id,
+        metadata=req.metadata,
+    )
+    decision = await router.route(route_req)
+    backend = registry.get(decision.backend_id)
+    await observer.emit_ic("GLOBAL_BACKEND_SELECTED", {"session_id": session_id, "backend_id": backend.backend_id, "confidence": decision.confidence, "reason": decision.reason})
+    try:
+        result = await backend_client.call_message(backend, _as_backend_request(req, session_id), decision)
+    except Exception as exc:
+        await observer.emit_noc("005", {"component": "agent_gateway", "backend_id": backend.backend_id, "session_id": session_id, "error": str(exc)})
+        raise HTTPException(status_code=502, detail={"message": "Falha ao chamar backend selecionado", "backend_id": backend.backend_id, "error": str(exc)})
+
+    # Handoff opcional: backend pode pedir troca via metadata.handover_backend.
+    response = result.response
+
+    backend_session_id = (
+            response.get("session_id")
+            or response.get("metadata", {}).get("conversation_key")
+    )
+
+    if backend_session_id:
+        session_data = await session_store.set_active_backend(
+            session_id=session_id,
+            backend_id=backend.backend_id,
+            tenant_id=tenant_id,
+            backend_session_id=backend_session_id,
+        )
+
+        response["session_id"] = session_id
+        metadata = response.get("metadata") or {}
+        metadata["backend_session_id"] = backend_session_id
+        metadata["global_session_id"] = session_id
+        response["metadata"] = metadata
+        response["session_id"] = session_id
+
+    metadata = response.get("metadata") or {}
+    handover_backend = metadata.get("handover_backend") or metadata.get("handover_to_backend")
+    if handover_backend and handover_backend in registry.backends and handover_backend != backend.backend_id:
+        await observer.emit_ic("GLOBAL_BACKEND_HANDOVER", {"session_id": session_id, "from_backend": backend.backend_id, "to_backend": handover_backend})
+        forced = GatewayRequest(**req.model_dump())
+        forced.backend_id = handover_backend
+        forced.payload = {**forced.payload, "handover_from_backend": backend.backend_id}
+        return await gateway_message(forced)
+
+    await observer.emit_ic("GLOBAL_GATEWAY_COMPLETED", {"session_id": session_id, "backend_id": backend.backend_id, "elapsed_ms": int((time.time() - started) * 1000)})
+    metadata = dict(metadata)
+    metadata["global_route_decision"] = decision.model_dump(mode="json")
+    metadata["selected_backend"] = backend.backend_id
+    metadata["backend_elapsed_ms"] = result.elapsed_ms
+    response["metadata"] = metadata
+    return response
+
+
+@app.post("/gateway/message/sse")
+async def gateway_message_sse(req: GatewayRequest):
+    # Para simplificar o contrato, primeiro roteia via gateway e delega ao endpoint SSE do backend.
+    # O frontend pode continuar usando /gateway/events/{session_id} diretamente no backend escolhido,
+    # ou evoluir para um proxy SSE no gateway.
+    return await gateway_message(req)
+
+from fastapi.responses import StreamingResponse
+import httpx
+import asyncio
+
+
+@app.get("/gateway/events/{session_id:path}")
+async def gateway_events(session_id: str):
+
+    async def stream():
+        yield (
+            "event: connected\n"
+            f'data: {{"session_id":"{session_id}","component":"agent_gateway"}}\n\n'
+        )
+
+        session_data = await session_store.get(session_id)
+
+        while not session_data:
+            yield (
+                "event: waiting\n"
+                f'data: {{"session_id":"{session_id}"}}\n\n'
+            )
+
+            await asyncio.sleep(1)
+            session_data = await session_store.get(session_id)
+
+        logger.error("SESSION_DATA SSE = %s", session_data)
+
+        backend_id = session_data.active_backend
+        backend_session_id = session_id
+
+        if not backend_id:
+            yield (
+                "event: error\n"
+                f'data: {{"message":"Sessão encontrada sem active_backend",'
+                f'"session_id":"{session_id}"}}\n\n'
+            )
+            return
+
+        backend = registry.get(backend_id)
+
+        backend_base_url = (
+                getattr(backend, "base_url", None)
+                or getattr(backend, "url", None)
+                or getattr(backend, "endpoint", None)
+                or getattr(backend, "base_endpoint", None)
+        )
+
+        if not backend_base_url:
+            yield (
+                "event: error\n"
+                f'data: {{"message":"Backend sem URL configurada",'
+                f'"backend_id":"{backend_id}"}}\n\n'
+            )
+            return
+
+        backend_sse_url = (
+            f"{backend_base_url.rstrip('/')}/gateway/events/{backend_session_id}"
+        )
+
+        yield (
+            "event: backend.selected\n"
+            f'data: {{"session_id":"{session_id}",'
+            f'"backend_id":"{backend_id}",'
+            f'"backend_session_id":"{backend_session_id}",'
+            f'"backend_sse_url":"{backend_sse_url}"}}\n\n'
+        )
+
+        try:
+            async with httpx.AsyncClient(timeout=None) as client:
+                async with client.stream("GET", backend_sse_url) as response:
+                    content_type = response.headers.get("content-type", "")
+
+                    if response.status_code != 200:
+                        body = await response.aread()
+                        yield (
+                            "event: error\n"
+                            f'data: {{"message":"Backend SSE retornou erro",'
+                            f'"status_code":{response.status_code},'
+                            f'"content_type":"{content_type}",'
+                            f'"body":{body.decode("utf-8", errors="replace")!r}}}\n\n'
+                        )
+                        return
+
+                    if "text/event-stream" not in content_type:
+                        body = await response.aread()
+                        yield (
+                            "event: error\n"
+                            f'data: {{"message":"Backend SSE não retornou text/event-stream",'
+                            f'"status_code":{response.status_code},'
+                            f'"content_type":"{content_type}",'
+                            f'"body":{body.decode("utf-8", errors="replace")!r}}}\n\n'
+                        )
+                        return
+
+                    async for chunk in response.aiter_text():
+                        if chunk:
+                            yield chunk
+
+        except Exception as exc:
+            logger.exception("Erro no proxy SSE do gateway")
+            yield (
+                "event: error\n"
+                f'data: {{"message":"Erro no proxy SSE do gateway",'
+                f'"error":"{str(exc)}"}}\n\n'
+            )
+
+    return StreamingResponse(
+        stream(),
+        media_type="text/event-stream",
+        headers={
+            "Cache-Control": "no-cache",
+            "Connection": "keep-alive",
+            "X-Accel-Buffering": "no",
+        },
+    )

apps/agent_gateway/app/settings.py

@@ -0,0 +1,62 @@
+from __future__ import annotations
+
+from functools import lru_cache
+from typing import Literal
+
+from pydantic_settings import BaseSettings, SettingsConfigDict
+
+
+class GatewaySettings(BaseSettings):
+    model_config = SettingsConfigDict(env_file=".env", env_file_encoding="utf-8", extra="ignore")
+
+    APP_NAME: str = "agent-gateway-global-supervisor"
+    APP_ENV: str = "local"
+    LOG_LEVEL: str = "INFO"
+    API_HOST: str = "0.0.0.0"
+    API_PORT: int = 8010
+    CORS_ORIGINS: str = "http://localhost:5173"
+
+    BACKENDS_CONFIG_PATH: str = "./config/backends.yaml"
+    GLOBAL_ROUTING_MODE: Literal["router", "supervisor", "hybrid"] = "hybrid"
+    GLOBAL_KEEP_ACTIVE_BACKEND: bool = True
+    GLOBAL_USE_SUPERVISOR_ON_CONFLICT: bool = True
+    GLOBAL_MIN_ROUTER_CONFIDENCE: float = 0.55
+    GLOBAL_SESSION_TTL_SECONDS: int = 3600
+    BACKEND_TIMEOUT_SECONDS: float = 120.0
+
+    # Reusa o provider do framework para o supervisor LLM.
+    LLM_PROVIDER: Literal["mock", "oci_openai", "oci_sdk", "openai_compatible"] = "mock"
+    LLM_TEMPERATURE: float = 0.0
+    LLM_MAX_TOKENS: int = 700
+    LLM_TIMEOUT_SECONDS: int = 60
+    OCI_GENAI_BASE_URL: str = "https://inference.generativeai.sa-saopaulo-1.oci.oraclecloud.com/openai/v1"
+    OCI_GENAI_MODEL: str = "openai.gpt-4.1"
+    OCI_GENAI_API_KEY: str | None = None
+    ENABLE_LANGFUSE: bool = False
+    LANGFUSE_PUBLIC_KEY: str | None = None
+    LANGFUSE_SECRET_KEY: str | None = None
+    LANGFUSE_HOST: str = "https://cloud.langfuse.com"
+    MODEL_PRICES_JSON: str | None = None
+    USD_BRL_RATE: str = "5.0"
+
+    # Analytics/Observer do próprio gateway.
+    ENABLE_ANALYTICS: bool = False
+    ANALYTICS_PROVIDERS: str = "oci_streaming"
+    GCP_PUBSUB_TOPIC_PATH: str | None = None
+    AGENT_PUBSUB_TOPIC: str | None = None
+    GCP_PROJECT_ID: str | None = None
+    GCP_PUBSUB_TOPIC: str | None = None
+    GCP_PUBSUB_TIMEOUT_SECONDS: float = 30.0
+    ANALYTICS_FAIL_SILENT: bool = True
+    ENABLE_OCI_STREAMING: bool = False
+    OCI_STREAM_ENDPOINT: str | None = None
+    OCI_STREAM_OCID: str | None = None
+    OCI_STREAM_PARTITION_KEY: str = "agent-gateway-events"
+
+
+@lru_cache
+def get_settings() -> GatewaySettings:
+    return GatewaySettings()
+
+
+settings = get_settings()

apps/agent_gateway/config/backends.yaml

@@ -0,0 +1,38 @@
+default_backend: contas
+
+backends:
+  contas:
+    url: http://localhost:8001
+    description: Backend responsável por faturas, contas, pagamentos, consumo, segunda via e contestação.
+    domains: [contas, fatura, pagamento, consumo, contestacao]
+    keywords: [fatura, conta, boleto, pagamento, consumo, segunda via, contestar, contestação, valor, cobrança]
+    examples:
+      - Quero consultar minha fatura
+      - Minha conta veio alta
+      - Preciso da segunda via do boleto
+    priority: 10
+    default_agent_id: telecom_contas
+
+  ofertas:
+    url: http://localhost:8002
+    description: Backend responsável por ofertas, planos, upgrades, retenção e contratação.
+    domains: [ofertas, planos, retenção, contratação]
+    keywords: [oferta, plano, contratar, upgrade, desconto, promoção, pacote, retenção, cancelar serviço]
+    examples:
+      - Quero trocar meu plano
+      - Tem alguma oferta para mim?
+      - Quero cancelar um serviço
+    priority: 20
+    default_agent_id: telecom_ofertas
+
+  suporte:
+    url: http://localhost:8003
+    description: Backend responsável por suporte técnico, falhas, rede, internet e atendimento operacional.
+    domains: [suporte, técnico, rede, internet]
+    keywords: [internet, sinal, rede, suporte, técnico, problema, falha, sem conexão, modem]
+    examples:
+      - Minha internet está lenta
+      - Estou sem sinal
+      - Preciso de suporte técnico
+    priority: 30
+    default_agent_id: telecom_suporte

apps/agent_gateway/docs/ARQUITETURA_GLOBAL_SUPERVISOR.md

@@ -0,0 +1,31 @@
+# Arquitetura — Global Supervisor
+
+```text
+Usuário / Frontend
+        │
+        ▼
+┌───────────────────────────────┐
+│ Agent Gateway                 │
+│ Global Supervisor             │
+│                               │
+│ - Router por regras           │
+│ - Supervisor via LLM          │
+│ - Híbrido stateful            │
+│ - Handoff entre backends      │
+└───────────────┬───────────────┘
+                │
+      ┌─────────┼─────────┬────────────┐
+      ▼         ▼         ▼            ▼
+Backend      Backend   Backend     Backend
+Contas       Ofertas   Suporte     Cobrança
+```
+
+Cada backend continua sendo um projeto independente, com seus próprios agentes, prompts, MCPs e deploy, mas todos usam a mesma biblioteca `agent_framework`.
+
+## Estado global
+
+O Gateway mantém um `active_backend` por `session_id`. No modo `hybrid`, mensagens curtas como "e esse valor?" continuam no backend ativo sem chamar LLM.
+
+## Memória compartilhada
+
+Para produção, configure os backends para usar o mesmo Session/Memory/Checkpoint Repository, preferencialmente Autonomous DB, Oracle, MongoDB ou Redis + DB.

apps/agent_gateway/requirements.txt

@@ -0,0 +1,7 @@
+fastapi>=0.115.0
+uvicorn[standard]>=0.30.0
+pydantic>=2.8.0
+pydantic-settings>=2.4.0
+PyYAML>=6.0.2
+httpx>=0.27.0
+python-dotenv>=1.0.1