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245 lines (216 loc) · 8.94 KB
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from __future__ import annotations
from typing import Any
from fastapi import WebSocket, WebSocketDisconnect
from pydantic import ValidationError
from ..kernel.executionPayload import executeKernelBlock, executeKernelReactive
from ..kernel.protocol import (
WsErrorMessage,
WsExecuteMessage,
WsExecuteReactiveMessage,
WsExecutionEventMessage,
WsGetVariablesMessage,
WsInterruptMessage,
WsResetMessage,
WsSetUiValueMessage,
WsStatusMessage,
)
from ..kernel.uiEventFlow import resetKernelUiCallbacks
from ..serverLog import formatLogFields
KERNEL_WS_RUNTIME_ERRORS = (
AttributeError,
ConnectionError,
OSError,
RuntimeError,
TypeError,
ValueError,
)
async def handleKernelWebSocket(websocket: WebSocket, session: Any, logger: Any) -> None:
await websocket.accept()
logger.debug("kernel-ws %s", formatLogFields(action="connect", sessionId=session.sessionId))
await websocket.send_json(WsStatusMessage(type="status", engineStatus="ready").model_dump())
try:
while True:
message = await websocket.receive_json()
try:
parsedMessage = validateKernelWsMessage(message)
except ValidationError as error:
logger.warning(
"kernel-ws %s",
formatLogFields(action="validation", sessionId=session.sessionId, message=str(error)),
)
await websocket.send_json(
WsErrorMessage(
type="error",
requestId=message.get("requestId"),
message=firstKernelWsValidationMessage(error),
).model_dump()
)
continue
except ValueError as error:
logger.warning(
"kernel-ws %s",
formatLogFields(action="validation", sessionId=session.sessionId, message=str(error)),
)
await websocket.send_json(WsErrorMessage(type="error", message=str(error)).model_dump())
continue
await handleKernelWsMessage(websocket, session, parsedMessage, logger)
except WebSocketDisconnect:
logger.debug("kernel-ws %s", formatLogFields(action="disconnect", sessionId=session.sessionId))
return
except KERNEL_WS_RUNTIME_ERRORS as error:
logger.exception(
"kernel-ws %s",
formatLogFields(action="error", sessionId=session.sessionId, message=str(error)),
)
await _safeSendJson(websocket, WsErrorMessage(type="error", message=str(error)).model_dump())
async def handleKernelWsMessage(websocket: WebSocket, session: Any, message: Any, logger: Any) -> None:
if isinstance(message, WsExecuteMessage):
await handleExecuteMessage(websocket, session, message, logger)
elif isinstance(message, WsInterruptMessage):
session.interrupt()
logger.debug("kernel-interrupt %s", formatLogFields(transport="ws", sessionId=session.sessionId))
elif isinstance(message, WsGetVariablesMessage):
await _safeSendJson(
websocket,
{
"type": "variables",
"variables": [variable.model_dump() for variable in session.getVariables()],
},
)
logger.debug("kernel-variables %s", formatLogFields(transport="ws", sessionId=session.sessionId))
elif isinstance(message, WsExecuteReactiveMessage):
await handleReactiveMessage(websocket, session, message, logger)
elif isinstance(message, WsSetUiValueMessage):
await handleSetUiValueMessage(websocket, session, message, logger)
elif isinstance(message, WsResetMessage):
session.reset()
resetKernelUiCallbacks()
await _safeSendJson(websocket, WsStatusMessage(type="status", engineStatus="ready").model_dump())
logger.debug("kernel-reset %s", formatLogFields(transport="ws", sessionId=session.sessionId))
def validateKernelWsMessage(message: dict[str, Any]) -> Any:
messageType = message.get("type", "")
if messageType == "execute":
return WsExecuteMessage.model_validate(message)
if messageType == "interrupt":
return WsInterruptMessage.model_validate(message)
if messageType == "getVariables":
return WsGetVariablesMessage.model_validate(message)
if messageType == "executeReactive":
return WsExecuteReactiveMessage.model_validate(message)
if messageType == "setUiValue":
return WsSetUiValueMessage.model_validate(message)
if messageType == "reset":
return WsResetMessage.model_validate(message)
raise ValueError(f"Unsupported websocket message type: {messageType or 'unknown'}.")
def firstKernelWsValidationMessage(error: ValidationError) -> str:
firstError = error.errors()[0] if error.errors() else {}
return str(firstError.get("msg", "Invalid websocket payload."))
async def handleExecuteMessage(websocket: WebSocket, session: Any, message: WsExecuteMessage, logger: Any) -> None:
requestId = message.requestId
code = message.code
blockId = message.blockId
if not await _safeSendJson(websocket, WsStatusMessage(type="status", engineStatus="busy").model_dump()):
return
payload = await executeKernelBlock(
session,
code,
blockId=blockId,
eventHandler=lambda event: sendExecutionEvent(websocket, requestId, event),
)
logger.debug(
"kernel-execute %s",
formatLogFields(
transport="ws",
sessionId=session.sessionId,
requestId=requestId,
blockId=blockId,
status=payload.result.status,
durationMs=payload.durationMs,
executionCount=payload.result.executionCount,
),
)
if not await _safeSendJson(websocket, payload.wsResultPayload(requestId)):
return
await _safeSendJson(websocket, WsStatusMessage(type="status", engineStatus="ready").model_dump())
async def handleReactiveMessage(
websocket: WebSocket,
session: Any,
message: WsExecuteReactiveMessage,
logger: Any,
) -> None:
blocks = [block.model_dump() for block in message.blocks]
await _runReactiveAndSend(
websocket, session, message.requestId, message.blockId, blocks, logger,
includeSource=True, kind="reactive",
)
async def handleSetUiValueMessage(
websocket: WebSocket,
session: Any,
message: WsSetUiValueMessage,
logger: Any,
) -> None:
# 위젯 값 store 갱신 → 그 변수를 쓰는 다운스트림만 재실행(위젯 셀 자신은 제외).
session.setUiValue(message.elementId, message.value)
blocks = [block.model_dump() for block in message.blocks]
await _runReactiveAndSend(
websocket, session, message.requestId, message.blockId, blocks, logger,
includeSource=False, kind="setUiValue",
)
async def _runReactiveAndSend(
websocket: WebSocket,
session: Any,
requestId: str,
changedBlockId: str,
blocks: list[dict[str, Any]],
logger: Any,
*,
includeSource: bool,
kind: str,
) -> None:
if not await _safeSendJson(websocket, WsStatusMessage(type="status", engineStatus="busy").model_dump()):
return
reactiveEvents: list[dict[str, Any]] = []
async def eventHandler(event: Any) -> None:
reactiveEvents.append({"blockId": event.blockId, "eventType": event.eventType})
await sendExecutionEvent(websocket, requestId, event)
payload = await executeKernelReactive(
session, blocks, changedBlockId, eventHandler=eventHandler, includeSource=includeSource
)
logger.debug(
"kernel-reactive %s",
formatLogFields(
transport="ws",
kind=kind,
sessionId=session.sessionId,
requestId=requestId,
changedBlockId=changedBlockId,
resultCount=payload.resultCount,
executionCount=payload.executionCount,
eventCount=len(reactiveEvents),
durationMs=payload.durationMs,
),
)
for resultPayload in payload.wsResultPayloads(requestId):
if not await _safeSendJson(websocket, resultPayload):
return
if not await _safeSendJson(websocket, payload.wsCompletePayload(requestId)):
return
await _safeSendJson(websocket, WsStatusMessage(type="status", engineStatus="ready").model_dump())
async def sendExecutionEvent(websocket: WebSocket, requestId: str, event: Any) -> None:
await _safeSendJson(
websocket,
WsExecutionEventMessage(
requestId=requestId,
blockId=event.blockId,
sequence=event.sequence,
eventType=event.eventType,
executionCount=event.executionCount,
payload=event.payload,
).model_dump(),
)
async def _safeSendJson(websocket: WebSocket, data: dict[str, Any]) -> bool:
try:
await websocket.send_json(data)
return True
except (WebSocketDisconnect, RuntimeError, ConnectionError, OSError):
return False