Files
app/backend/fluksio/main.py
T
stroblme 5d0ea480bf Alerts: a Telegram channel, one chat or group each, connected by a one-time link
The channel sends through the Bot API with httpx only: HTML with escaped text,
cut to fit a message, silent for a warning, a short 429 waited out once, and
errors that say what to do about a blocked bot, a lost chat or a bad token and
never quote the request URL. The bot token is a stored secret: saving a
channel refuses a literal one, the card's "Store token" writes the secret and
a reference, and no endpoint returns it.

A chat id is never typed. Connect starts a ten minute code, and the chat that
sends `/start <code>` back through the bot is the one connected, so it is a
chat somebody opened a link for. The engine fetches updates only while a code
is waiting (no standing poll, no webhook, no inbound address) and ignores
everything else without a reply. Connect needs a saved form, and the form
takes the connected chat in without touching what was typed since.

The token is part of every Bot API URL, so the httpx logger gets the same
filter the request lines have, which now also masks an httpx.URL argument.
2026-10-28 13:06:58 +01:00

653 lines
27 KiB
Python

import asyncio
import contextlib
import hashlib
import inspect
import ipaddress
import logging
import re
import sys
import tempfile
from collections.abc import AsyncIterator, Callable, Coroutine
from contextlib import AbstractAsyncContextManager, asynccontextmanager
from pathlib import Path
from typing import Any
import httpx
from fastapi import FastAPI, Request
from fastapi.concurrency import run_in_threadpool
from fastapi.responses import JSONResponse
from fastapi.routing import APIRoute
from fluksio_worker.worker_main import ARTIFACT_DIR_ENV, ARTIFACT_VOLATILE_DIR_ENV
from starlette.middleware.cors import CORSMiddleware
from starlette.types import ASGIApp, Receive, Scope, Send
from uvicorn.middleware.proxy_headers import ProxyHeadersMiddleware
from fluksio import __version__
from fluksio.api.main import api_router
from fluksio.api.routes.alerts import read_config as read_alerts_config
from fluksio.cloud import config as cloud_config
from fluksio.core import security
from fluksio.core.config import settings
from fluksio.core.db import engine as db_engine
from fluksio.core.db import prepare
from fluksio.flow import logs, modules, telegram
from fluksio.flow.alert_ledger import AlertLedger
from fluksio.flow.alerts import AlertManager
from fluksio.flow.artifacts import ArtifactStore, VolatileStore
from fluksio.flow.controller import FlowController, RebuildBusy
from fluksio.flow.dashboards import DashboardStore
from fluksio.flow.demand import demand
from fluksio.flow.devices import DeviceStore, DeviceUnavailable
from fluksio.flow.events import event_bus
from fluksio.flow.executor import ExecutionService
from fluksio.flow.metrics import MetricsCollector
from fluksio.flow.nodes.http import close_shared_client
from fluksio.flow.pipeline import ValueSource
from fluksio.flow.placement import Placer
from fluksio.flow.plugins import load_plugins
from fluksio.flow.provision import load_provisioners
from fluksio.flow.queue import MemoryWorkQueue, RedisWorkQueue, WorkQueue
from fluksio.flow.remote import RemoteWorkerHub
from fluksio.flow.resources import (
ResourceAccountant,
fair_share_env,
machine_gpus,
machine_ram_mb,
warn_oversubscribed,
)
from fluksio.flow.runs import RUN_STATE_TTL, RunService, sweep_artifacts
from fluksio.flow.secrets import init_secrets
from fluksio.flow.state import MemoryState, RedisState, StateBackend
from fluksio.flow.store import FlowStore, InvalidName
from fluksio.flow.watchdog import LoopWatchdog
from fluksio.flow.workers import PythonWorkerPool
logger = logging.getLogger(__name__)
#: A credential in a query string: the live socket's `?token=` or `?ticket=`, a
#: worker's `?token=`, the pairing poll's `?secret=`.
_CREDENTIAL_IN_QUERY = re.compile(r"([?&](?:[\w-]*token|[\w-]*secret|ticket)=)[^&\s]+")
#: A hook's secret, the last segment of `/hooks/<flow>/<path>/<secret>`. A hook
#: without one loses its last path segment from the log too, since the log
#: cannot tell which hooks carry a secret.
_SECRET_IN_HOOK_PATH = re.compile(r"(/hooks/[^/\s?]+/(?:[^/\s?]*/)*)[^/\s?]+")
def _redact(text: str) -> str:
return telegram.redact(
_SECRET_IN_HOOK_PATH.sub(r"\1***", _CREDENTIAL_IN_QUERY.sub(r"\1***", text))
)
class _RedactTokens(logging.Filter):
"""Keep credentials out of request lines, from the query string or the path.
uvicorn logs each request and websocket handshake with its URL, and the
live socket, a worker's attach and a device polling for its pairing carry
their credential in the query, a webhook or served socket in the path.
"""
def filter(self, record: logging.LogRecord) -> bool:
if isinstance(record.args, tuple):
# httpx logs its URL as an `httpx.URL`, not a string.
record.args = tuple(
_redact(str(arg)) if isinstance(arg, str | httpx.URL) else arg
for arg in record.args
)
return True
# The handshake lines go to `uvicorn.error`, the request lines to `uvicorn.access`,
# and the tunnel connector names the path of a call it could not proxy.
# httpx logs every request it makes at INFO, with the URL, and a Telegram bot's
# token is part of that URL.
for _name in ("uvicorn.access", "uvicorn.error", "fluksio.cloud.connector", "httpx"):
logging.getLogger(_name).addFilter(_RedactTokens())
def custom_generate_unique_id(route: APIRoute) -> str:
return f"{route.tags[0]}-{route.name}"
if settings.SENTRY_DSN and settings.ENVIRONMENT != "local":
# Imported here rather than at the top: it is the `sentry` extra, so
# a pip install without one has no sentry to import — and no DSN either.
import sentry_sdk
# `enable_tracing` was removed in sentry-sdk 2.x; this is what it meant.
sentry_sdk.init(dsn=str(settings.SENTRY_DSN), traces_sample_rate=1.0)
def _state_backend() -> StateBackend:
if settings.REDIS_HOST:
return RedisState(host=settings.REDIS_HOST, port=settings.REDIS_PORT)
return MemoryState()
def _work_queue(namespace: str = "queue") -> WorkQueue:
"""Redis makes queued work survive the process; memory does not pretend to."""
if settings.REDIS_HOST:
return RedisWorkQueue(
host=settings.REDIS_HOST, port=settings.REDIS_PORT, namespace=namespace
)
return MemoryWorkQueue()
def _run_state(namespace: str) -> StateBackend:
"""A state backend of a run's own, which is what isolates it.
It expires: a finished run's messages are read out into its result, and
what is left is only worth keeping while someone might look at it.
"""
if settings.REDIS_HOST:
return RedisState(
host=settings.REDIS_HOST,
port=settings.REDIS_PORT,
namespace=namespace,
ttl=RUN_STATE_TTL,
)
return MemoryState()
async def _sweep_artifacts(store: ArtifactStore, controller: FlowController) -> None:
"""Take unreferenced artifact bytes off the disk, on a slow loop.
A flow streaming media writes one artifact per frame, so a store nothing
prunes only grows. Runs in a thread: it walks a directory and reads state.
"""
interval = settings.ARTIFACT_GC_INTERVAL_S
if interval <= 0:
return
while True:
await asyncio.sleep(interval)
try:
await run_in_threadpool(
sweep_artifacts,
store,
controller.state,
settings.ARTIFACT_GC_GRACE_S,
controller.store,
)
except Exception:
logger.exception("Artifact sweep failed")
#: How often the ring is measured. Seconds rather than the sweep's hour: it is
#: bounded by size and the frames arriving are what push the old ones out.
VOLATILE_TRIM_S = 5.0
async def _trim_volatile(ring: VolatileStore) -> None:
"""Hold the workers' frame directory inside its bound.
The engine's own frames are held in memory and bounded as they arrive, but
a worker in this container writes its frames to a directory and the
engine never sees that ``put`` — so the bound needs something of its own
watching it.
"""
while True:
await asyncio.sleep(VOLATILE_TRIM_S)
try:
await run_in_threadpool(ring.trim)
except Exception:
logger.exception("Could not trim the volatile artifact ring")
def _volatile_root() -> Path:
"""Where the ring goes: memory if this machine has some to lend.
Named for the data directory rather than fixed, so two engines on one host
have a ring each instead of quietly evicting each other's frames.
"""
configured = settings.ARTIFACT_VOLATILE_DIR
if configured is not None:
return configured
tag = hashlib.sha256(str(settings.DATA_DIR.resolve()).encode()).hexdigest()[:8]
shm = Path("/dev/shm")
parent = shm if shm.is_dir() else Path(tempfile.gettempdir())
return parent / f"fluksio-volatile-{tag}"
def _volatile_ring() -> VolatileStore | None:
"""The ring of live frames, or None when its bound is zero.
Without one a volatile save is an ordinary one, and a worker writes its
frames to the durable store too.
"""
if settings.ARTIFACT_VOLATILE_BYTES <= 0:
return None
return VolatileStore(_volatile_root(), settings.ARTIFACT_VOLATILE_BYTES)
def _mcp_sessions() -> AbstractAsyncContextManager[None]:
"""The MCP session manager's run scope, or nothing when MCP is off."""
if not settings.MCP_ENABLED:
return contextlib.nullcontext()
from fluksio.mcp.server import mcp as mcp_server
return mcp_server.session_manager.run()
@asynccontextmanager
async def lifespan(app: FastAPI) -> AsyncIterator[None]:
"""Start the flow engine alongside the API."""
# The schema and the first superuser, before anything reads either. It is
# idempotent, so a deployment that ran this from its own prestart step
# pays a version check for it and nothing else.
await run_in_threadpool(prepare, db_engine)
event_bus.bind(asyncio.get_running_loop())
# Everything acquired below registers how to release it, and the `finally`
# at the end walks the list backwards. It used to be a fixed block of
# shutdown steps *after* every acquisition — so a failure part-way through
# startup reached none of them and left the worker pool's subprocesses and
# every background task behind. Under `--reload` that is once per bad edit.
started: list[Callable[[], Any]] = []
async def _release() -> None:
for close in reversed(started):
try:
result = close()
if inspect.isawaitable(result):
await result
except Exception:
logger.exception("Error while shutting down")
def _background(
coro: Coroutine[Any, Any, None], name: str, once: bool = False
) -> asyncio.Task[None]:
"""Start a background task that says something if it ever stops.
The loops catch their own exceptions *inside* the loop, so one raised
anywhere else simply ended the task — an engine that went on serving
with no metrics, no alerts or no artifact sweep and nothing anywhere
saying so. ``once`` is for a task that is meant to finish.
"""
task = asyncio.create_task(coro, name=name)
def _finished(done: asyncio.Task[None]) -> None:
if done.cancelled():
return
exc = done.exception()
if exc is None:
if not once:
logger.warning("Background task '%s' stopped on its own", name)
return
logger.error("Background task '%s' died: %s", name, exc, exc_info=exc)
event_bus.publish(
{"type": "engine_degraded", "detail": f"{name} stopped: {exc}"}
)
task.add_done_callback(_finished)
started.append(task.cancel)
return task
# The startup itself is inside the try, so a step that raises part-way
# through still reaches the release below.
try:
# Node code is user code, and `print` is how it says things.
logs.install()
init_secrets(settings.SECRETS_FILE, settings.SECRET_KEY)
# Connectors register their node types before any flow is built with them.
load_plugins()
alerts = AlertManager(
event_bus, config=read_alerts_config(), ledger=AlertLedger()
)
execution = ExecutionService(
queue=_work_queue(),
max_workers=settings.FLOW_MAX_WORKERS,
events=event_bus,
max_cascades=settings.FLOW_MAX_CASCADES,
)
store = FlowStore(settings.FLOWS_DIR)
# The packages node code imports. In the background, because a first
# install of anything substantial takes minutes and `uv` is given five
# of them twice over — held here, the container never answers its
# healthcheck, autoheal restarts it, and it never finishes installing at
# all. A node whose import is not there yet fails and is retried, which
# is recoverable; a restart loop is not.
_background(
run_in_threadpool(modules.reconcile, store), "module-reconcile", once=True
)
# Beside the flows rather than in them: an artifact is what a run produced,
# not something anyone wrote, so it has no business in the git repository.
artifacts = ArtifactStore(settings.FLOWS_DIR.parent / "artifacts")
# Frames a flow only shows live, held in memory and bounded by size.
# The store falls through to it, so a volatile reference is an
# ordinary one everywhere but in how long its bytes last.
volatile = _volatile_ring()
artifacts.volatile = volatile
app.state.artifact_store = artifacts
# Zero means "work it out" for cards and memory, as it always has for cores.
accountant = ResourceAccountant(
cpus=settings.FLOW_CPUS,
gpus=settings.FLOW_GPUS or machine_gpus(),
ram_mb=settings.FLOW_RAM or machine_ram_mb(),
)
app.state.resources = accountant
# Every machine a node could run on: this one, and whatever attaches.
placer = Placer(local=accountant, events=event_bus)
# Where more machines can be asked for when nothing attached will do.
placer.provisioners = load_provisioners(settings.PROVISIONERS_FILE, event_bus)
app.state.placer = placer
pool = PythonWorkerPool(
python=modules.venv_python(),
size=settings.FLOW_MAX_WORKERS,
events=event_bus,
max_rss_mb=settings.FLOW_WORKER_MAX_RSS_MB,
# A worker in this container writes to the store directly; a remote one
# is given a URL instead. Node code calls the same two functions.
env={
ARTIFACT_DIR_ENV: str(artifacts.root),
**({ARTIFACT_VOLATILE_DIR_ENV: str(volatile.root)} if volatile else {}),
# Every slot can be busy at once, so a worker left to size its own
# thread pool to the machine means as many processes as there are
# slots, each believing it has the whole of it. A node that says
# what it needs overrides this; one that says nothing gets a share.
**fair_share_env(accountant.cpus, settings.FLOW_MAX_WORKERS),
},
# The engine's own frames are in its memory, which a worker cannot
# read: each one a call names is written beside the workers'.
spill=volatile.spill if volatile else None,
)
pool.start()
# On a thread: stopping a worker waits up to five seconds on each child,
# and with a pool per declared environment that is a shutdown the event
# loop should not be holding.
started.append(lambda: run_in_threadpool(pool.stop))
app.state.worker_pool = pool
# Assigned rather than passed both ways: the hub tells the placer when a
# machine comes or goes, and the placer needs the hub to know what is there.
worker_hub = RemoteWorkerHub(on_change=placer.wake)
placer.hub = worker_hub
app.state.worker_hub = worker_hub
controller = FlowController(
store=store,
state=_state_backend(),
events=event_bus,
max_workers=settings.FLOW_MAX_WORKERS,
fastapi_app=app,
execution=execution,
alerts=alerts,
workers=pool,
remote=worker_hub,
resources=accountant,
placer=placer,
)
app.state.flow_controller = controller
# A "dashboard" alert channel puts its alert into the graph. Bound here
# rather than passed in: the manager is built before the controller is.
alerts.publish = lambda name, value: controller.publish_message(
name, value, ValueSource(kind="api", id="alerts", label="Alerts")
)
dashboards = DashboardStore(controller.store)
app.state.dashboard_store = dashboards
controller.dashboards = dashboards
devices = DeviceStore(controller.store, settings.DEVICES_FILE)
# Once, for an instance from before devices: its panels file moves
# into the repository and the nonce file, and is renamed `.migrated`.
await run_in_threadpool(devices.migrate, settings.PANELS_FILE)
# Once, for an instance from before device nodes: each device's own
# ports become a device node in the flow declaring their message.
await run_in_threadpool(devices.move_io)
app.state.device_store = devices
controller.devices = devices
# What the sockets want and the flows read, mapped onto the devices'
# on-demand ports.
demand.bind(controller)
# Charts need a deeper series than the default; tell the engine
# before it starts recording.
controller.set_history_limits(dashboards.history_requirements())
# Runs read from a stream of their own: a burst of sweep runs must not
# stand between the automations and their work, and a run that takes an
# hour must not be judged by the cascade reaper's timings.
run_service = RunService(
controller=controller,
queue=_work_queue("run"),
state_factory=_run_state,
artifacts=artifacts,
parallel=settings.FLOW_MAX_RUNS,
)
app.state.run_service = run_service
# Said out loud because it is the only way to tell that a settings file was
# read at all — the numbers are what someone raising them is looking for.
logger.info(
"Engine limits: workers=%s cascades=%s runs=%s ram_mb=%s worker_max_rss_mb=%s",
settings.FLOW_MAX_WORKERS,
execution.max_cascades,
run_service.parallel,
accountant.ram_mb,
settings.FLOW_WORKER_MAX_RSS_MB,
)
warn_oversubscribed(
{
"FLOW_MAX_WORKERS": settings.FLOW_MAX_WORKERS,
"FLOW_MAX_CASCADES": settings.FLOW_MAX_CASCADES,
}
)
watchdog = LoopWatchdog(event_bus)
app.state.watchdog = watchdog
_background(watchdog.run(), "loop-watchdog")
_background(alerts.run(), "alert-manager")
# On the app so a superuser can ask it to flush now.
app.state.metrics_collector = MetricsCollector(event_bus)
_background(app.state.metrics_collector.run(), "metrics-collector")
_background(_sweep_artifacts(artifacts, controller), "artifact-gc")
if volatile is not None:
_background(_trim_volatile(volatile), "artifact-ring")
await controller.start()
started.append(controller.stop)
run_service.start()
started.append(lambda: run_in_threadpool(run_service.stop))
# A machine asked for and not yet arrived would hold an allocation nobody
# is going to use.
started.append(
lambda: asyncio.gather(
*(
run_in_threadpool(provisioner.shutdown)
for provisioner in placer.provisioners
)
)
)
started.append(lambda: run_in_threadpool(close_shared_client))
# Optional, and off unless someone enrolled this instance: the
# connector dials the portal, nothing dials in.
cloud_task: asyncio.Task[None] | None = None
app.state.cloud_connector = None
app.state.cloud_task = None
from fluksio.cloud import connector as cloud_connector
if cloud_config.exists():
cloud_connector.start(app)
cloud_task = app.state.cloud_task
def _stop_cloud() -> None:
# Re-read from app.state: enrolling at runtime replaces this.
running = getattr(app.state, "cloud_task", None) or cloud_task
if running is not None:
running.cancel()
started.append(_stop_cloud)
# Watched whether or not one exists now: enrolling from the CLI writes the
# config from another process entirely, and an engine already serving
# should pick it up rather than need restarting.
_background(cloud_connector.watch_enrolment(app), "cloud-enrolment-watch")
# A mounted sub-app gets no lifespan of its own, so the MCP session
# manager is entered here; without it every /mcp request fails.
async with _mcp_sessions():
yield
except Exception:
# A startup that fails part-way lands here too, because everything
# since `event_bus.bind` registered its own release.
logger.exception("The engine could not start")
raise
finally:
await _release()
# Imported by the endpoint when MCP is on and by the assistant on its
# first turn; either way the client it built is closed here.
tools = sys.modules.get("fluksio.mcp.server")
if tools is not None:
await tools.aclose()
# The schema enumerates every endpoint this instance serves, including the
# paths trigger nodes mount at runtime. That is exactly what a developer wants
# and exactly what a reachable engine should not hand out: never in
# production, and otherwise only to a caller on this machine unless
# API_DOCS_ENABLED says so (the dev stack does). `fluksio serve --host 0.0.0.0`
# keeps the default ENVIRONMENT, which is why loopback is the line rather than
# the environment alone. The generated client is built from `app.openapi()`
# and needs none of these routes.
_docs_enabled = settings.ENVIRONMENT != "production"
_DOCS_PATHS = frozenset(
{"/docs", "/docs/oauth2-redirect", "/redoc", f"{settings.API_V1_STR}/openapi.json"}
)
class DocsForThisMachine:
"""Answer the schema routes with a 404 for a caller off this machine."""
def __init__(self, app: ASGIApp) -> None:
self.app = app
async def __call__(self, scope: Scope, receive: Receive, send: Send) -> None:
if (
scope["type"] == "http"
and scope["path"] in _DOCS_PATHS
and not settings.API_DOCS_ENABLED
and not _is_loopback((scope.get("client") or ("",))[0])
):
response = JSONResponse({"detail": "Not Found"}, status_code=404)
await response(scope, receive, send)
return
await self.app(scope, receive, send)
def _is_loopback(host: str) -> bool:
try:
return ipaddress.ip_address(host).is_loopback
except ValueError:
return False
app = FastAPI(
title=settings.PROJECT_NAME,
version=__version__,
openapi_url=f"{settings.API_V1_STR}/openapi.json" if _docs_enabled else None,
docs_url="/docs" if _docs_enabled else None,
redoc_url="/redoc" if _docs_enabled else None,
generate_unique_id_function=custom_generate_unique_id,
lifespan=lifespan,
)
# Set all CORS enabled origins
if settings.all_cors_origins:
app.add_middleware(
CORSMiddleware,
allow_origins=settings.all_cors_origins,
allow_credentials=True,
allow_methods=["*"],
allow_headers=["*"],
)
app.add_middleware(DocsForThisMachine)
if settings.FRONTEND_DIST:
from fluksio.spa import Dashboard
app.add_middleware(Dashboard, dist=settings.FRONTEND_DIST)
# The caller's address, for every per-address limit and the docs check above:
# the rightmost X-Forwarded-For hop that is not a trusted proxy. uvicorn does
# this for what it serves, but a call the portal tunnel replays arrives over an
# in-process transport as 127.0.0.1 and never passes through it. Doing it again
# here covers that, with uvicorn's own semantics, and is a no-op on a request
# uvicorn already resolved. Added last, so it is the outermost layer.
app.add_middleware(ProxyHeadersMiddleware, trusted_hosts=settings.FORWARDED_ALLOW_IPS)
app.include_router(api_router, prefix=settings.API_V1_STR)
@app.exception_handler(InvalidName)
async def invalid_name(request: Request, exc: InvalidName) -> JSONResponse: # noqa: ARG001
"""A flow, node, library or dashboard name no store will turn into a path."""
return JSONResponse(status_code=400, content={"detail": str(exc)})
@app.exception_handler(DeviceUnavailable)
async def device_unavailable(request: Request, exc: DeviceUnavailable) -> JSONResponse: # noqa: ARG001
"""A device credential that cannot be checked now is not a refused one."""
return JSONResponse(status_code=503, content={"detail": str(exc)})
@app.exception_handler(RebuildBusy)
async def rebuild_busy(request: Request, exc: RebuildBusy) -> JSONResponse: # noqa: ARG001
"""Every route that deploys something answers a wedged rebuild the same way.
The request was fine and retrying it may well work, so this is the engine
saying it is busy rather than the request having gone wrong.
"""
return JSONResponse(status_code=503, content={"detail": str(exc)})
# Tagged because the operation-id builder reads the first tag; the route
# itself stays out of the schema.
@app.get(
"/.well-known/oauth-authorization-server",
include_in_schema=False,
tags=["oauth"],
)
def oauth_authorization_server(request: Request) -> JSONResponse:
"""RFC 8414 metadata, so an agent can find its way in unaided.
The authorization endpoint is the dashboard rather than the API: approving
a client needs a signed-in human, and the browser session lives there.
Through the hub that is the dashboard the portal opens, which the hub names
when the link attaches; the hub's own address is the guess an older one
leaves.
"""
from fluksio.cloud import config as cloud_config
base = cloud_config.portal_base(request.headers)
issuer = base or settings.oauth_issuer
dashboard = settings.FRONTEND_HOST.rstrip("/")
if base is not None:
connector = getattr(request.app.state, "cloud_connector", None)
dashboard = getattr(connector, "app_url", None) or base
return JSONResponse(
content={
"issuer": issuer,
"authorization_endpoint": f"{dashboard}/oauth/authorize",
"token_endpoint": f"{issuer}{settings.API_V1_STR}/oauth/token",
"registration_endpoint": f"{issuer}{settings.API_V1_STR}/oauth/register",
"jwks_uri": f"{issuer}/.well-known/jwks.json",
"response_types_supported": ["code"],
"grant_types_supported": ["authorization_code", "refresh_token"],
"code_challenge_methods_supported": ["S256"],
"token_endpoint_auth_methods_supported": ["none"],
"scopes_supported": [security.MCP_SCOPE],
},
headers={"Cache-Control": "public, max-age=3600"},
)
@app.get("/.well-known/jwks.json", include_in_schema=False, tags=["oauth"])
def jwks() -> JSONResponse:
"""The public half of the MCP signing key."""
return JSONResponse(
content=security.public_jwks(),
headers={"Cache-Control": "public, max-age=3600"},
)
# Mounted last, and at the root: the SDK serves both /mcp and the protected
# resource metadata that has to sit beside it, so mounting under /mcp would put
# that metadata somewhere no client looks for it.
if settings.MCP_ENABLED:
from fluksio.mcp.http import build_http_app
app.mount("/", build_http_app(app))