358 lines
17 KiB
Python
358 lines
17 KiB
Python
"""Сокет курсанта-оператора 112.
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Здесь только JSON-часть: приём вызова, правки карточки, подсказки, передача
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в ДДС, завершение. Бинарные аудиокадры и голосовой контур — карточка lct-06.
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"""
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import asyncio
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import json
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import logging
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from uuid import UUID
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from fastapi import APIRouter, WebSocket, WebSocketDisconnect
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from pydantic import TypeAdapter, ValidationError
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from app.domain.events import (
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StationState,
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CallIncoming,
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CallEnded,
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CallEndReason,
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CallStarted,
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ErrorEvent,
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ErrorKind,
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Exercise,
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HintShown,
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KioState,
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KioPatchOut,
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PatchSource,
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ScoreReady,
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SessionEnded,
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SessionMode,
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TimerTick,
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TraineeToServer,
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)
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from app.domain.events import BgStart
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from app.scenarios import store
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from app.session.finish import finish, release_score
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from app.api.auth import principal_of
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from app.domain.roles import Role
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from app.session.hub import hub
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from app.session.state import now_utc
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from app.domain.kio import ResponseStatus
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from app.voice.models import get_voice_models
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from app.voice.pipeline import VoiceSession
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log = logging.getLogger(__name__)
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router = APIRouter()
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#: Кадр контракта: 20 мс PCM16 моно 16 кГц = 320 сэмплов = 640 байт.
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FRAME_BYTES = 640
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FRAMES_PER_LOG = 250 # раз в пять секунд звука
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_adapter = TypeAdapter(TraineeToServer)
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def _on_audio(session_id: UUID, state, frame: bytes) -> None:
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"""Приём аудиокадра: в голосовой контур, а без него — только счёт."""
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if len(frame) != FRAME_BYTES:
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state.bad_frames += 1
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if state.bad_frames == 1:
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# Один раз, а не на каждый кадр: неверный формат повторяется 50 раз в секунду.
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log.warning("сессия %s: кадр %d байт вместо %d — проверь ресемплинг на фронте",
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session_id, len(frame), FRAME_BYTES)
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return
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state.audio_frames += 1
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if state.voice is not None:
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state.voice.feed(frame)
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if state.audio_frames % FRAMES_PER_LOG == 0:
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log.info("сессия %s: получено %d кадров (%.0f с звука)",
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session_id, state.audio_frames, state.audio_frames * 0.02)
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def _next_hint(state) -> tuple[str, str] | None:
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"""Следующий неотработанный пункт чек-листа, который ещё не подсказывали.
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«Неотработанный» знает слот-автомат: пункт, о котором оператор уже спросил
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своими словами, подсказывать бессмысленно. Без модели эмбеддингов автомата
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нет — тогда подсказка идёт по порядку чек-листа.
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"""
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if state.slots is not None:
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candidates = state.slots.unasked()
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else:
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scenario = state.scenario or store.get(state.scenario_id)
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candidates = scenario.checklist if scenario else []
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for item in candidates:
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if item.id not in state.hints_shown and item.question:
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return item.id, item.question
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return None
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async def _handle(session_id: UUID, state, event) -> None:
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if state.ended and event.type != "self_assessment.submit":
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hub.to_trainee(session_id, ErrorEvent(
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code=ErrorKind.UNSUPPORTED_EVENT, message="Занятие уже завершено",
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))
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return
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if state.exercise is Exercise.DDS or (
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state.exercise is Exercise.CARD and event.type not in {"kio.patch", "card.submit"}
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) or (state.exercise is Exercise.CALL and event.type == "card.submit"):
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hub.to_trainee(session_id, ErrorEvent(
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code=ErrorKind.UNSUPPORTED_EVENT, message="Действие недоступно в этом упражнении",
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))
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return
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match event.type:
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case "card.submit":
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state.kio.registered_at = state.started_at or now_utc()
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state.kio.response_status = ResponseStatus.TRANSFERRED
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state.dispatched_card = state.kio.model_copy(deep=True)
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state.dispatched_at = now_utc()
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state.ended_at = state.dispatched_at
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state.end_reason = CallEndReason.COMPLETE
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hub.stop_ticker(session_id)
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hub.to_station(session_id, state.card_received_event())
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hub.to_station(session_id, StationState(snapshot=state.station_snapshot()))
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hub.to_observers(session_id, KioState(kio=state.kio))
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hub.to_trainee(session_id, CallEnded(reason=CallEndReason.COMPLETE))
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hub.to_observers(session_id, SessionEnded(reason=CallEndReason.COMPLETE))
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if hub.journal:
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await hub.journal.session_ended(
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session_id, state.ended_at, CallEndReason.COMPLETE.value
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)
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await finish(session_id, state)
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case "call.answer":
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state.on_event("call.answer")
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state.started_at = now_utc()
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hub.to_trainee(session_id, CallStarted(started_at=state.started_at))
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hub.to_observers(session_id, state.snapshot())
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if hub.journal:
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await hub.journal.session_started(session_id, state.started_at)
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_start_voice(session_id, state)
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case "kio.patch":
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old_code, old_notify = state.kio.incident_code, list(state.kio.notify)
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state.patch_kio(event.fields)
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hub.to_trainee(session_id, KioPatchOut(
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fields=event.fields, source=PatchSource.OPERATOR,
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))
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if (state.kio.incident_code, state.kio.notify) != (old_code, old_notify):
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hub.to_trainee(session_id, KioPatchOut(
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fields={"incident_code": state.kio.incident_code,
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"notify": list(state.kio.notify)},
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source=PatchSource.AUTO,
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))
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# Наблюдателю уходит карточка целиком: рассинхрон на внешнем мониторе
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# посреди занятия дороже лишних килобайт.
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hub.to_observers(session_id, KioState(kio=state.kio))
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case "hint.request":
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if state.mode is SessionMode.EXAM:
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# На экзамене опоры нет — это часть нормы контроля.
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hub.to_trainee(
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session_id,
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ErrorEvent(
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code=ErrorKind.HINT_DENIED_IN_EXAM,
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message="В контрольном режиме подсказки недоступны",
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),
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)
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return
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nxt = _next_hint(state)
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if nxt is None:
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return
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checklist_id, question = nxt
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state.hints_shown.append(checklist_id)
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state.hints_log.append((checklist_id, now_utc()))
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shown = HintShown(checklist_id=checklist_id, question=question)
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hub.broadcast(session_id, shown)
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if hub.journal:
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await hub.journal.hint(session_id, checklist_id, question, now_utc())
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case "dds.dispatch":
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if event.service is None and not (state.kio.incident_code or state.kio.notify):
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hub.to_trainee(session_id, ErrorEvent(
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code=ErrorKind.UNSUPPORTED_EVENT,
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message="Укажите ДДС или проставьте признаки для маршрутизации по ЕКП",
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))
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return
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state.on_event("dds.dispatch")
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state.dispatch(event.service.value if event.service else None)
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hub.to_trainee(session_id, KioPatchOut(
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fields={"response_status": state.kio.response_status.value,
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"dds": state.kio.dds.value if state.kio.dds else None},
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source=PatchSource.AUTO,
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))
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# Карточка замораживается снимком и уходит диспетчеру: оператор
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# не должен иметь возможности дописать поле задним числом.
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hub.to_station(session_id, state.card_received_event())
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# Список оповещения диспетчер должен видеть сразу, а не после
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# первого своего действия: отмечаться ему по нему же (lct-33).
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hub.to_station(session_id, StationState(snapshot=state.station_snapshot()))
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hub.to_observers(session_id, KioState(kio=state.kio))
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hub.to_observers(session_id, TimerTick(timers=state.timers.snapshot()))
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case "call.resolve":
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# Курсант закрывает вызов не карточкой. Отдельное действие, а не
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# «положил трубку»: система должна отличить осознанное решение
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# от брошенного вызова (docs/spec/TICKETS.md).
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state.resolved_outcome = event.outcome.value
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state.resolve_comment = event.comment
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state.on_event("call.resolve")
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hub.to_observers(session_id, state.snapshot())
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case "callback.dial":
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state.on_event("callback.dial")
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case "self_assessment.submit":
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state.self_assessed = True
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state.self_assessment = {"missed": event.missed, "comment": event.comment}
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if hub.journal:
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await hub.journal.self_assessment(
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session_id, event.missed, event.comment, now_utc()
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)
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# Оценка могла быть готова раньше самооценки — теперь её можно отдать.
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await release_score(session_id, state)
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case "call.hangup":
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if state.voice is not None:
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await state.voice.close()
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state.ended_at = now_utc()
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state.end_reason = CallEndReason.HANGUP
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hub.stop_ticker(session_id)
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hub.to_trainee(session_id, CallEnded(reason=CallEndReason.HANGUP))
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hub.to_observers(session_id, SessionEnded(reason=CallEndReason.HANGUP))
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if hub.journal:
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await hub.journal.session_ended(
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session_id, state.ended_at, CallEndReason.HANGUP.value
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)
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await finish(session_id, state)
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def _start_voice(session_id: UUID, state) -> None:
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"""Голос включается, когда курсант снял трубку: звонящий сразу кричит первую реплику."""
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models = get_voice_models()
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scenario = store.get(state.scenario_id)
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if models is None or scenario is None or state.voice is not None:
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return
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state.voice = VoiceSession(
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session_id=session_id,
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state=state,
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models=models,
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send_event=lambda event: hub.to_trainee(session_id, event),
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send_observer=lambda event: hub.to_observers(session_id, event),
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send_audio=lambda pcm: hub.to_trainee(session_id, pcm),
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journal=hub.journal,
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)
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if scenario.background:
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event = BgStart(loop=scenario.background.loop, gain_db=scenario.background.gain_db)
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hub.broadcast(session_id, event)
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state.voice.speak(scenario.first_line, state.persona.mood)
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async def _pump(ws: WebSocket, queue: asyncio.Queue) -> None:
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while True:
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item = await queue.get()
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# Бинарь — звук звонящего, без обёртки JSON (docs/arch/CONTRACT.md).
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if isinstance(item, bytes):
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await ws.send_bytes(item)
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else:
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await ws.send_text(item.model_dump_json())
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async def _reject(ws: WebSocket, message: str) -> None:
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"""Отказ до входа в цикл: сокет закрывается с объяснением, а не молча."""
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await ws.send_text(
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ErrorEvent(code=ErrorKind.FORBIDDEN, message=message).model_dump_json()
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)
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await ws.close()
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@router.websocket("/ws/call/{session_id}")
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async def call(ws: WebSocket, session_id: UUID) -> None:
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await ws.accept()
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# АРМ курсанта. Преподаватель допущен, чтобы показать приём вызова группе.
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who = principal_of(ws)
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if who is None or who.role not in (Role.TRAINEE, Role.INSTRUCTOR):
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await _reject(ws, "Недостаточно прав для этого экрана")
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return
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state = hub.get(session_id)
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if state is None:
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await ws.send_text(
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ErrorEvent(
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code=ErrorKind.SESSION_NOT_FOUND, message="Занятие ещё не запущено преподавателем"
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).model_dump_json()
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)
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await ws.close()
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return
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if who.role is Role.TRAINEE and (
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state.trainee_id is None or state.trainee_id != who.trainee_id
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):
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await _reject(ws, "Занятие не назначено этому обучающемуся")
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return
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with hub.trainee(session_id) as queue:
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if state.exercise is Exercise.CARD:
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from app.api.ws.control import card_briefing
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hub.to_trainee(session_id, card_briefing(state))
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if state.ended:
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hub.to_trainee(session_id, CallEnded(reason=state.end_reason or CallEndReason.COMPLETE))
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if state.score is not None:
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hub.to_trainee(session_id, ScoreReady(session_id=session_id))
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elif state.exercise is Exercise.CALL:
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scenario = state.scenario or store.get(state.scenario_id)
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required = ([field for field in state.required_fields if field != "dds"]
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if scenario and scenario.ground_truth.incident_code
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else list(state.required_fields))
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hub.to_trainee(session_id, CallIncoming(
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scenario_id=state.scenario_id, caller_number="+7 (495) 000-00-00",
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level=state.level, mode=state.mode, required_fields=required,
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))
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hub.to_trainee(session_id, KioPatchOut(
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fields=state.kio.model_dump(mode="json"), source=PatchSource.OPERATOR,
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))
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if state.started_at is not None:
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hub.to_trainee(session_id, CallStarted(started_at=state.started_at))
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if state.ended:
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hub.to_trainee(session_id, CallEnded(reason=state.end_reason or CallEndReason.HANGUP))
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if state.score is not None and state.self_assessed:
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hub.to_trainee(session_id, ScoreReady(session_id=session_id))
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hub.to_trainee(session_id, TimerTick(timers=state.timers.snapshot()))
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writer = asyncio.create_task(_pump(ws, queue))
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try:
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while True:
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message = await ws.receive()
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if message["type"] == "websocket.disconnect":
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return
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# Бинарные кадры — аудио, текстовые — события. Направление определяется
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# каналом, обёртки JSON вокруг звука нет (docs/arch/CONTRACT.md).
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if message.get("bytes") is not None:
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if state.exercise is Exercise.CALL:
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_on_audio(session_id, state, message["bytes"])
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else:
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hub.to_trainee(session_id, ErrorEvent(
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code=ErrorKind.UNSUPPORTED_EVENT,
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message="Аудио не используется в этом упражнении",
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))
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continue
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try:
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payload = json.loads(message.get("text") or "")
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except json.JSONDecodeError:
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hub.to_trainee(
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session_id,
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ErrorEvent(code=ErrorKind.UNSUPPORTED_EVENT, message="не JSON"),
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)
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continue
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try:
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event = _adapter.validate_python(payload)
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except ValidationError:
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hub.to_trainee(
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session_id,
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ErrorEvent(code=ErrorKind.UNSUPPORTED_EVENT, message=str(payload)[:200]),
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)
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continue
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await _handle(session_id, state, event)
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except WebSocketDisconnect:
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return
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finally:
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writer.cancel()
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