146 lines
5.2 KiB
Python
146 lines
5.2 KiB
Python
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"""Канал преподавателя: только передача.
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**Ни одной команды, меняющей карточку курсанта.** Преподаватель управляет
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ситуацией, а не работой обучаемого, иначе оценка перестаёт быть оценкой
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курсанта (docs/arch/CONTRACT.md).
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Ответы сюда не идут — канал односторонний. Всё, что сервер хочет сказать
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преподавателю, уходит на его же сокет `observe`.
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"""
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import logging
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from uuid import UUID, uuid4
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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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CallEndReason,
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CallIncoming,
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ErrorEvent,
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ErrorKind,
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InstructorToServer,
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InstructorNoteShown,
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ModeSet,
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ReferenceStarted,
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SessionEnded,
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)
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from app.scenarios import store
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from app.session.hub import hub
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from app.session.state import SessionState, now_utc
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log = logging.getLogger(__name__)
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router = APIRouter()
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_adapter = TypeAdapter(InstructorToServer)
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async def _start(session_id: UUID, event) -> None:
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scenario = store.get(event.scenario_id)
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if scenario is None:
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hub.to_observers(
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session_id,
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ErrorEvent(code=ErrorKind.SCENARIO_INVALID, message=f"Нет сценария {event.scenario_id}"),
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)
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return
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attempt = 1
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if hub.journal:
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attempt = await hub.journal.start_lesson(
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session_id, scenario.id, event.mode.value, event.trainee
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)
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state = hub.register(
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SessionState(
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session_id=session_id,
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scenario_id=scenario.id,
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scenario_title=scenario.title,
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level=scenario.level.value,
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mode=event.mode,
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required_fields=scenario.required_fields,
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trainee_name=event.trainee,
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attempt=attempt,
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)
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)
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state.on_event("call.incoming")
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hub.start_ticker(session_id)
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hub.to_trainee(
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session_id,
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CallIncoming(
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scenario_id=scenario.id,
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caller_number="+7 (495) 000-00-00",
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level=scenario.level,
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mode=event.mode,
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required_fields=scenario.required_fields,
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),
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)
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hub.to_observers(session_id, ModeSet(mode=event.mode))
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hub.to_observers(session_id, state.snapshot())
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async def _stop(session_id: UUID) -> None:
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state = hub.get(session_id)
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if state is None:
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return
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state.ended_at = now_utc()
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state.end_reason = CallEndReason.INSTRUCTOR
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hub.stop_ticker(session_id)
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hub.to_observers(session_id, SessionEnded(reason=CallEndReason.INSTRUCTOR))
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if hub.journal:
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await hub.journal.session_ended(session_id, state.ended_at, CallEndReason.INSTRUCTOR.value)
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@router.websocket("/ws/control/{session_id}")
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async def control(ws: WebSocket, session_id: UUID) -> None:
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await ws.accept()
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try:
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while True:
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payload = await ws.receive_json()
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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_observers(
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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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match event.type:
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case "scenario.start":
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await _start(session_id, event)
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case "session.stop":
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await _stop(session_id)
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case "instructor_note.add":
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hub.to_observers(
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session_id,
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InstructorNoteShown(
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transcript_ref=event.transcript_ref,
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text=event.text,
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author="преподаватель",
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),
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)
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if hub.journal:
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await hub.journal.note(
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session_id, event.transcript_ref, event.text, "преподаватель"
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)
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case "reference.play":
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state = hub.get(session_id)
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if state is not None:
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hub.to_observers(session_id, ReferenceStarted(scenario_id=state.scenario_id))
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case "director.inject":
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# Поведение звонящего — карточка lct-07, пульт — lct-22.
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# До них директива копится в состоянии и видна в разборе.
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state = hub.get(session_id)
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if state is not None:
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state.directives.append(event.directive)
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case _:
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hub.to_observers(
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session_id,
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ErrorEvent(
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code=ErrorKind.UNSUPPORTED_EVENT,
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message=f"{event.type} ещё не реализовано",
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),
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)
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except WebSocketDisconnect:
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return
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