from __future__ import annotations import argparse import asyncio import base64 import json import os import struct import uuid import zlib from collections import deque from collections.abc import AsyncIterator, Mapping from dataclasses import dataclass, field from pathlib import Path from queue import SimpleQueue from typing import Final, cast import httpx import uvicorn from _fake_openai_endpoint_server import chat_completions, completions, embeddings, health, moderations from integration.cost_calculation.cost_tracking_case import ( BinaryResponse, EventStreamEvent, EventStreamResponse, JsonResponse, RealtimeResponse, RoutedResponse, SseResponse, StoredResponse, TextResponse, ) from pydantic import BaseModel, ConfigDict, JsonValue, TypeAdapter, ValidationError from starlette.applications import Starlette from starlette.datastructures import UploadFile as StarletteUploadFile from starlette.requests import Request from starlette.responses import JSONResponse, Response, StreamingResponse from starlette.routing import Route, WebSocketRoute from starlette.websockets import WebSocket JSON_OBJECT: Final = TypeAdapter(dict[str, JsonValue]) CASES_FILE: Final = Path(__file__).resolve().parents[1] / "cost_calculation" / "cost_tracking_cases.json" INTERNAL_FIELDS: Final = frozenset( { "litellm_params", "litellm_logging_obj", "litellm_call_id", "litellm_metadata", "proxy_server_request", "rpm", "tpm", "timeout", "stream_chunk_size", } ) def error_type(status: int) -> str: if status == 429: return "rate_limit_error" return "invalid_request_error" if status < 500 else "server_error" def _form_observation_value(value: str | StarletteUploadFile) -> JsonValue: if isinstance(value, StarletteUploadFile): return {"filename": value.filename, "content_type": value.content_type} return value @dataclass(frozen=True, slots=True) class Observation: path: str authorization: str body: dict[str, JsonValue] method: str = "POST" api_key: str = "" class InteractionState(BaseModel): """What the scripted Interactions API answers for one interaction id until a DELETE drops it.""" model_config = ConfigDict(extra="forbid") status: str usage: dict[str, JsonValue] | None = None get_status: int = 200 delay_seconds: float = 0 class _ScenarioRegistration(BaseModel): scenario_id: str response: StoredResponse def _aws_str_header(name: str, value: str) -> bytes: name_bytes: Final = name.encode() value_bytes: Final = value.encode() return ( struct.pack("!B", len(name_bytes)) + name_bytes + struct.pack("!B", 7) + struct.pack("!H", len(value_bytes)) + value_bytes ) def _aws_int_header(name: str, value: int) -> bytes: name_bytes: Final = name.encode() return struct.pack("!B", len(name_bytes)) + name_bytes + struct.pack("!B", 4) + struct.pack("!i", value) def aws_event_stream_frame(headers: Mapping[str, str | int], payload: bytes) -> bytes: """One AWS event-stream frame: a string header is wire type 7, an int header wire type 4 (int32).""" headers_bytes: Final = b"".join( _aws_str_header(name, value) if isinstance(value, str) else _aws_int_header(name, value) for name, value in headers.items() ) total_length: Final = 12 + len(headers_bytes) + len(payload) + 4 prelude: Final = struct.pack("!II", total_length, len(headers_bytes)) prelude_crc: Final = struct.pack("!I", zlib.crc32(prelude) & 0xFFFFFFFF) message: Final = prelude + prelude_crc + headers_bytes + payload return message + struct.pack("!I", zlib.crc32(message) & 0xFFFFFFFF) def _aws_event_frame( event_type: str, payload: Mapping[str, JsonValue], scenario_id: str, unique_id: str, ) -> bytes: payload_bytes: Final = ( json.dumps(payload, separators=(",", ":")) .replace("$REQUEST_ID", scenario_id) .replace("$UNIQUE_ID", unique_id) .encode() ) return aws_event_stream_frame( {":event-type": event_type, ":content-type": "application/json", ":message-type": "event"}, payload_bytes ) class ScenarioStore: def __init__(self) -> None: self._scenarios: dict[str, StoredResponse] = {} def put(self, scenario_id: str, response: StoredResponse) -> None: self._scenarios[scenario_id] = response def drop(self, scenario_id: str) -> bool: return self._scenarios.pop(scenario_id, None) is not None def get(self, scenario_id: str) -> StoredResponse | None: return self._scenarios.get(scenario_id) @dataclass(frozen=True, slots=True) class Provider: observations: SimpleQueue[Observation] = field(default_factory=SimpleQueue) scripts: dict[str, deque[int]] = field(default_factory=dict) scenario_store: ScenarioStore = field(default_factory=ScenarioStore) interactions: dict[str, InteractionState] = field(default_factory=dict) async def chat(self, request: Request) -> Response: body: Final = JSON_OBJECT.validate_json(await request.body()) self.observations.put( Observation(request.url.path, request.headers.get("authorization", ""), body, request.method) ) leaked: Final = tuple(sorted(INTERNAL_FIELDS.intersection(body))) if leaked: return JSONResponse({"error": {"message": f"Unexpected provider fields: {leaked}"}}, status_code=400) messages: Final = body.get("messages") if not isinstance(body.get("model"), str) or not isinstance(messages, list) or not messages: return JSONResponse({"error": {"message": "model and nonempty messages are required"}}, status_code=400) if any( not isinstance(message, dict) or message.get("role") not in {"system", "developer", "user", "assistant", "tool"} or "content" not in message for message in messages ): return JSONResponse({"error": {"message": "Invalid selected message contract"}}, status_code=400) script: Final = self.scripts.get(str(body["model"])) if script is not None: if not script: return JSONResponse({"error": {"message": "Script exhausted", "type": "api_error"}}, status_code=500) status: Final = script.popleft() if status != 200: return JSONResponse( { "error": { "message": "Controlled provider failure", "type": error_type(status), "code": str(status), } }, status_code=status, ) return await chat_completions(request) async def vector_store_search(self, request: Request) -> Response: body: Final = JSON_OBJECT.validate_json(await request.body()) self.observations.put( Observation(request.url.path, request.headers.get("authorization", ""), body, request.method) ) query: Final = body.get("query") if not isinstance(query, str) or not query: return JSONResponse({"error": {"message": "query is required"}}, status_code=400) vector_store_id: Final = cast(str, request.path_params["vector_store_id"]) return JSONResponse( { "object": "vector_store.search_results.page", "search_query": query, "data": [ { "file_id": f"file_{vector_store_id}", "filename": "scripted.txt", "score": 0.9, "attributes": {}, "content": [{"type": "text", "text": f"scripted context for {query}"}], } ], "has_more": False, "next_page": None, } ) async def script(self, request: Request) -> Response: name: Final = cast(str, request.path_params["model"]) if request.method in {"DELETE", "GET"} and name not in self.scripts: return JSONResponse({"error": "Script not found"}, status_code=404) if request.method == "GET": return JSONResponse({"remaining": list(self.scripts[name])}) if request.method == "DELETE": remaining: Final = self.scripts.pop(name) return JSONResponse({"remaining": list(remaining)}) body: Final = JSON_OBJECT.validate_json(await request.body()) statuses: Final = body.get("statuses") if not isinstance(statuses, list) or not statuses or any(type(value) is not int for value in statuses): return JSONResponse({"error": "A nonempty list of HTTP status codes is required"}, status_code=400) self.scripts[name] = deque(int(str(value)) for value in statuses) return JSONResponse({"configured": len(statuses)}) async def observed(self, request: Request) -> Response: values: Final = tuple(self.observations.get() for _ in range(self.observations.qsize())) return JSONResponse( { "requests": [ { "path": value.path, "authorization": value.authorization, "body": value.body, "method": value.method, "api_key": value.api_key, } for value in values ] } ) async def register_scenario(self, request: Request) -> Response: try: registration: Final = _ScenarioRegistration.model_validate_json(await request.body()) except ValidationError as exc: return JSONResponse({"error": str(exc)}, status_code=400) self.scenario_store.put(registration.scenario_id, registration.response) return JSONResponse({"scenario_id": registration.scenario_id}) async def delete_scenario(self, request: Request) -> Response: scenario_id: Final = cast(str, request.path_params["scenario_id"]) deleted: Final = self.scenario_store.drop(scenario_id) return JSONResponse({"deleted": deleted}, status_code=200 if deleted else 404) async def cost_map(self, _request: Request) -> Response: cases_file: Final = JSON_OBJECT.validate_json(CASES_FILE.read_bytes()) return JSONResponse(cases_file["cost_map"]) async def oauth_token(self, _request: Request) -> Response: return JSONResponse( { "access_token": "scripted-token", "token_type": "Bearer", "expires_in": 3600, } ) async def scripted(self, request: Request) -> Response: segments: Final = tuple(segment for segment in cast(str, request.path_params["path"]).split("/") if segment) scenario_id: Final = ( segments[0].split(":", 1)[0] if segments and self.scenario_store.get(segments[0].split(":", 1)[0]) is not None else request.headers.get("x-scripted-scenario", "") ) response: Final = self.scenario_store.get(scenario_id) if response is None: return JSONResponse({"error": "Unknown scenario"}, status_code=404) content_type: Final = request.headers.get("content-type", "") if request.method == "POST" and "json" in content_type: raw_body: Final = await request.body() if raw_body: body: Final = JSON_OBJECT.validate_json(raw_body) if isinstance(body, dict): self.observations.put( Observation( request.url.path, request.headers.get("authorization", ""), body, request.method, request.headers.get("x-goog-api-key", ""), ) ) elif request.method == "POST" and "multipart/form-data" in content_type: fields: Final = await request.form() body: Final = {name: _form_observation_value(value) for name, value in fields.items()} self.observations.put( Observation(request.url.path, request.headers.get("authorization", ""), body, request.method) ) elif request.method == "GET": self.observations.put( Observation(request.url.path, request.headers.get("authorization", ""), {}, request.method) ) if isinstance(response, RoutedResponse): route_key: Final = f"{request.method} /{'/'.join(segments[1:])}" route: Final = next( ( candidate for key, candidate in response.routes.items() if key.replace("$REQUEST_ID", scenario_id) == route_key ), None, ) if route is None: return JSONResponse({"error": "Unknown scripted route"}, status_code=404) return self._response(route, scenario_id) return self._response(response, scenario_id) async def interaction_state(self, request: Request) -> Response: interaction_id: Final = cast(str, request.path_params["interaction_id"]) if request.method == "DELETE": self.interactions.pop(interaction_id, None) return JSONResponse({"interaction_id": interaction_id, "registered": False}) try: state: Final = InteractionState.model_validate_json(await request.body()) except ValidationError as exc: return JSONResponse({"error": str(exc)}, status_code=400) self.interactions[interaction_id] = state return JSONResponse({"interaction_id": interaction_id, "registered": True}) def _observe_interaction(self, request: Request) -> None: self.observations.put( Observation( request.url.path, request.headers.get("authorization", ""), {}, method=request.method, api_key=request.headers.get("x-goog-api-key", ""), ) ) async def interaction(self, request: Request) -> Response: self._observe_interaction(request) interaction_id: Final = cast(str, request.path_params["interaction_id"]) state: Final = self.interactions.get(interaction_id) if state is None: return JSONResponse(_interaction_not_found(interaction_id), status_code=404) if state.delay_seconds: await asyncio.sleep(state.delay_seconds) if request.method == "DELETE": if self.interactions.pop(interaction_id, None) is None: return JSONResponse(_interaction_not_found(interaction_id), status_code=404) return JSONResponse({}) if state.get_status != 200: return JSONResponse( {"error": {"code": state.get_status, "message": "Scripted interaction fetch failure"}}, status_code=state.get_status, ) return JSONResponse(_interaction_body(interaction_id, state)) async def cancel_interaction(self, request: Request) -> Response: self._observe_interaction(request) interaction_id: Final = cast(str, request.path_params["interaction_id"]) state: Final = self.interactions.get(interaction_id) if state is None: return JSONResponse(_interaction_not_found(interaction_id), status_code=404) cancelled: Final = InteractionState(status="cancelled", usage=state.usage, get_status=state.get_status) self.interactions[interaction_id] = cancelled return JSONResponse(_interaction_body(interaction_id, cancelled)) async def realtime(self, websocket: WebSocket) -> None: authorization: Final = websocket.headers.get("authorization", "") api_key: Final = websocket.headers.get("api-key", "") scenario_id: Final = authorization.removeprefix("Bearer ") if authorization else api_key self.observations.put( Observation( websocket.url.path, authorization, {"query": [[key, value] for key, value in websocket.query_params.multi_items()]}, "WEBSOCKET", api_key, ) ) response: Final = self.scenario_store.get(scenario_id) if not isinstance(response, RealtimeResponse): await websocket.close(code=4404) return await websocket.accept() session: Final = _realtime_session(response, scenario_id, websocket.query_params.get("model", "")) for _ in range(response.created_repeats): await websocket.send_json({"type": response.created_event, "event_id": _event_id(), "session": session}) event_index: Final = iter(response.events) async for message in websocket.iter_json(): payload: Final = JSON_OBJECT.validate_python(message) self.observations.put(Observation(websocket.url.path, authorization, payload, "WEBSOCKET_FRAME", api_key)) if payload.get("type") == "session.update": await websocket.send_json( _realtime_update_reply(payload.get("session"), session, response.session_type) ) continue if payload.get("type") not in _REALTIME_TRIGGERS: continue event: Final = next(event_index, None) if event is None: continue await websocket.send_json(_rendered_realtime_event(event, scenario_id)) async def muse_realtime(self, websocket: WebSocket) -> None: await websocket.accept() handshake: Final = JSON_OBJECT.validate_python(await websocket.receive_json()) authorization: Final = _muse_access_token(handshake) self.observations.put(Observation(websocket.url.path, authorization, handshake, "WEBSOCKET")) scenario_id: Final = authorization.removeprefix("Bearer ") response: Final = self.scenario_store.get(scenario_id) if not isinstance(response, RealtimeResponse): await websocket.close(code=4404) return await websocket.send_json({"sessionId": f"sess_{scenario_id}"}) pending: Final = deque(response.events) while True: frame: Final = await websocket.receive() if frame["type"] == "websocket.disconnect": return self.observations.put(Observation(websocket.url.path, authorization, _muse_frame(frame), "WEBSOCKET_FRAME")) while pending: await websocket.send_json(_rendered_realtime_event(pending.popleft(), scenario_id)) async def gemini_live(self, websocket: WebSocket) -> None: authorization: Final = websocket.headers.get("authorization", "") scenario_id: Final = websocket.headers.get("x-goog-user-project", "") self.observations.put( Observation( websocket.url.path, authorization, {"host": websocket.headers.get("host", "")}, "WEBSOCKET", scenario_id, ) ) response: Final = self.scenario_store.get(scenario_id) if not isinstance(response, RealtimeResponse): await websocket.close(code=4404) return await websocket.accept() pending: Final = deque(response.events) async for message in websocket.iter_json(): payload: Final = JSON_OBJECT.validate_python(message) self.observations.put( Observation(websocket.url.path, authorization, payload, "WEBSOCKET_FRAME", scenario_id) ) if "setup" in payload: await websocket.send_json({"setupComplete": {}}) continue if not _GEMINI_LIVE_TRIGGERS.intersection(payload): continue while pending: await websocket.send_json(_rendered_realtime_event(pending.popleft(), scenario_id)) @staticmethod def _response(response: StoredResponse, scenario_id: str) -> Response: unique_id: Final = f"{scenario_id}-{uuid.uuid4().hex[:8]}" match response: case JsonResponse(): return Response( content=json.dumps(response.body, separators=(",", ":")) .replace("$REQUEST_ID", scenario_id) .replace("$UNIQUE_ID", unique_id) .encode(), media_type=response.content_type, status_code=response.status, ) case BinaryResponse(): return Response( content=b"\x00" * response.length, media_type=response.content_type, ) case TextResponse(): return Response( content=response.body.replace("$REQUEST_ID", scenario_id).encode(), media_type=response.content_type, status_code=response.status, ) case SseResponse(): if response.frame_delay_ms > 0: async def stream() -> AsyncIterator[bytes]: for frame in response.frames: yield ( f"{frame.replace('$REQUEST_ID', scenario_id).replace('$UNIQUE_ID', unique_id)}\n\n" ).encode() await asyncio.sleep(response.frame_delay_ms / 1000) return StreamingResponse(stream(), media_type=response.content_type) stream_body: Final = ( ("\n\n".join(response.frames) + "\n\n") .replace("$REQUEST_ID", scenario_id) .replace("$UNIQUE_ID", unique_id) ) return Response(content=stream_body.encode(), media_type=response.content_type) case EventStreamResponse(): events: Final = ( tuple( EventStreamEvent( event_type="chunk", payload={ "bytes": base64.b64encode( json.dumps(event.payload, separators=(",", ":")) .replace("$REQUEST_ID", scenario_id) .replace("$UNIQUE_ID", unique_id) .encode() ).decode(), }, ) for event in response.events ) if response.framing == "invoke" else response.events ) event_body: Final = b"".join( _aws_event_frame(event.event_type, event.payload, scenario_id, unique_id) for event in events ) return Response(content=event_body, media_type=response.content_type) def app(self) -> Starlette: return Starlette( routes=[ Route("/health", health), Route("/__observations", self.observed), Route("/__scripts/{model}", self.script, methods=["POST", "DELETE", "GET"]), Route("/__scenarios", self.register_scenario, methods=["POST"]), Route("/__scenarios/{scenario_id}", self.delete_scenario, methods=["DELETE"]), Route("/_cost_map", self.cost_map, methods=["GET"]), Route("/_oauth/token", self.oauth_token, methods=["POST"]), Route("/v1/chat/completions", self.chat, methods=["POST"]), Route("/v1/completions", completions, methods=["POST"]), Route("/v1/embeddings", embeddings, methods=["POST"]), Route("/v1/moderations", moderations, methods=["POST"]), Route("/vector_stores/{vector_store_id}/search", self.vector_store_search, methods=["POST"]), Route("/__interactions/{interaction_id}", self.interaction_state, methods=["PUT", "DELETE"]), Route("/v1beta/interactions/{interaction_id}:cancel", self.cancel_interaction, methods=["POST"]), Route("/v1beta/interactions/{interaction_id}", self.interaction, methods=["GET", "DELETE"]), Route( "/{prefix:path}/v1beta/interactions/{interaction_id}:cancel", self.cancel_interaction, methods=["POST"], ), Route( "/{prefix:path}/v1beta/interactions/{interaction_id}", self.interaction, methods=["GET", "DELETE"], ), Route("/{path:path}", self.scripted, methods=["POST"]), Route("/{path:path}", self.scripted, methods=["GET"]), WebSocketRoute("/v1/realtime", self.realtime), WebSocketRoute("/openai/v1/realtime", self.realtime), WebSocketRoute("/openai/realtime", self.realtime), WebSocketRoute("/v1/asr/realtime", self.muse_realtime), WebSocketRoute(GEMINI_LIVE_PATH, self.gemini_live), ] ) CONTROL_URL: Final = os.environ.get("INTEGRATION_UPSTREAM_URL", "http://127.0.0.1:8190").rstrip("/") def _interaction_not_found(interaction_id: str) -> dict[str, JsonValue]: return {"error": {"code": 404, "message": f"Interaction {interaction_id} not found", "status": "NOT_FOUND"}} def _interaction_body(interaction_id: str, state: InteractionState) -> dict[str, JsonValue]: return { "id": interaction_id, "object": "interaction", "model": "gemini-3.8-flash", "status": state.status, "steps": [], "usage": state.usage, } _REALTIME_TRIGGERS: Final = frozenset({"response.create", "input_audio_buffer.commit"}) _GEMINI_LIVE_TRIGGERS: Final = frozenset({"clientContent", "realtimeInput"}) GEMINI_LIVE_PATH: Final = "/ws/google.cloud.aiplatform.v1.LlmBidiService/BidiGenerateContent" _TRANSCRIPTION_UPDATE_REFUSED: Final = "Passing a realtime session update to a transcription session is not allowed." _REALTIME_UPDATE_REFUSED: Final = "Passing a transcription session update to a realtime session is not allowed." _NESTED_TURN_DETECTION_TYPE: Final = "session.audio.input.turn_detection.type" _FLAT_TURN_DETECTION_TYPE: Final = "session.turn_detection.type" def _event_id() -> str: return f"event_{uuid.uuid4().hex[:12]}" def _realtime_session(response: RealtimeResponse, scenario_id: str, requested_model: str) -> dict[str, JsonValue]: return { "id": f"sess_{scenario_id}", "model": response.session_model if response.session_model is not None else requested_model, **({} if response.session_type is None else {"type": response.session_type}), } def _realtime_error(code: str, message: str, param: str | None) -> dict[str, JsonValue]: return { "type": "error", "event_id": _event_id(), "error": {"type": "invalid_request_error", "code": code, "message": message, "param": param, "event_id": None}, } def _missing_turn_detection_type(session: Mapping[str, JsonValue]) -> str | None: audio: Final = session.get("audio") audio_input: Final = audio.get("input") if isinstance(audio, dict) else None nested: Final = audio_input.get("turn_detection") if isinstance(audio_input, dict) else None if isinstance(nested, dict) and "type" not in nested: return _NESTED_TURN_DETECTION_TYPE flat: Final = session.get("turn_detection") if isinstance(flat, dict) and "type" not in flat: return _FLAT_TURN_DETECTION_TYPE return None def _realtime_update_reply( session: JsonValue, created: Mapping[str, JsonValue], session_type: str | None ) -> dict[str, JsonValue]: if not isinstance(session, dict): return _realtime_error("invalid_value", "Invalid value for 'session': expected an object.", "session") missing: Final = _missing_turn_detection_type(session) if missing is not None: return _realtime_error("missing_required_parameter", f"Missing required parameter: '{missing}'.", missing) declared: Final = session.get("type") if session_type == "transcription" and declared is not None and declared != "transcription": return _realtime_error("invalid_parameter", _TRANSCRIPTION_UPDATE_REFUSED, "") if session_type != "transcription" and declared == "transcription": return _realtime_error("invalid_parameter", _REALTIME_UPDATE_REFUSED, "") return {"type": "session.updated", "event_id": _event_id(), "session": {**created, **session}} def _rendered_realtime_event(event: Mapping[str, JsonValue], scenario_id: str) -> dict[str, JsonValue]: return JSON_OBJECT.validate_json( json.dumps(event, separators=(",", ":")) .replace("$REQUEST_ID", scenario_id) .replace("$UNIQUE_ID", f"{scenario_id}-{uuid.uuid4().hex[:8]}") ) def _muse_access_token(handshake: Mapping[str, JsonValue]) -> str: authorization: Final = handshake.get("authorization") token: Final = authorization.get("accessToken") if isinstance(authorization, dict) else None return token if isinstance(token, str) else "" def _muse_frame(frame: Mapping[str, object]) -> dict[str, JsonValue]: text: Final = frame.get("text") if isinstance(text, str): return JSON_OBJECT.validate_json(text) data: Final = frame.get("bytes") return {"binary_bytes": len(data) if isinstance(data, bytes) else 0} @dataclass(frozen=True, slots=True) class ScenarioHandle: scenario_id: str control_url: str def api_base(self) -> str: return f"{self.control_url}/{self.scenario_id}" def register_scenario(scenario_id: str, response: StoredResponse, *, control_url: str = CONTROL_URL) -> ScenarioHandle: http_response: Final = httpx.post( f"{control_url}/__scenarios", json={"scenario_id": scenario_id, "response": response.model_dump(mode="json")}, trust_env=False, timeout=15, verify=_verify_control(control_url), ) http_response.raise_for_status() return ScenarioHandle( scenario_id=scenario_id, control_url=control_url, ) def delete_scenario(handle: ScenarioHandle) -> None: response: Final = httpx.delete( f"{handle.control_url}/__scenarios/{handle.scenario_id}", trust_env=False, timeout=15, verify=_verify_control(handle.control_url), ) response.raise_for_status() def _verify_control(control_url: str) -> bool: return not control_url.startswith("https://") def set_interaction_state(control_url: str, interaction_id: str, state: InteractionState) -> None: response: Final = httpx.put( f"{control_url}/__interactions/{interaction_id}", content=state.model_dump_json(), headers={"content-type": "application/json"}, trust_env=False, timeout=15, ) response.raise_for_status() def clear_interaction_state(control_url: str, interaction_id: str) -> None: response: Final = httpx.delete(f"{control_url}/__interactions/{interaction_id}", trust_env=False, timeout=15) response.raise_for_status() def main() -> None: parser: Final = argparse.ArgumentParser() parser.add_argument("--port", type=int, default=8190) parser.add_argument("--ssl-certfile", default=None) parser.add_argument("--ssl-keyfile", default=None) arguments: Final = parser.parse_args() uvicorn.run( Provider().app(), host="127.0.0.1", port=cast(int, arguments.port), access_log=False, timeout_keep_alive=125, ssl_certfile=cast(str | None, arguments.ssl_certfile), ssl_keyfile=cast(str | None, arguments.ssl_keyfile), ) if __name__ == "__main__": main()