File size: 4,357 Bytes
85270f9 3241f40 85270f9 3241f40 85270f9 3241f40 85270f9 3241f40 85270f9 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 | from __future__ import annotations
import time
from fastapi import FastAPI, Request
from fastapi.encoders import jsonable_encoder
from fastapi.exceptions import RequestValidationError
from fastapi.responses import JSONResponse
from starlette.exceptions import HTTPException as StarletteHTTPException
from starlette.requests import ClientDisconnect
from services.protocol.error_response import anthropic_error_response, openai_error_response
from utils.sensitive_data import sanitize_sensitive_data
from utils.log import logger
def _is_openai_compatible_path(path: str) -> bool:
return path == "/v1" or path.startswith("/v1/")
def _is_anthropic_messages_path(path: str) -> bool:
return path == "/v1/messages"
def _compatible_error_response(
request: Request,
detail: object,
status_code: int,
headers: dict[str, str] | None = None,
) -> JSONResponse:
if _is_anthropic_messages_path(request.url.path):
return anthropic_error_response(detail, status_code, headers=headers)
return openai_error_response(detail, status_code, headers=headers)
def install_exception_handlers(app: FastAPI) -> None:
@app.exception_handler(ClientDisconnect)
async def client_disconnect_handler(request: Request, exc: ClientDisconnect) -> JSONResponse:
# A disconnected upload is not a server crash. Do not translate/record
# this expected transport outcome in the unconfigured-error ledger.
metrics = getattr(request.state, "image_upload_metrics", {})
length = request.headers.get("content-length", "")
expected_bytes = int(length) if length.isascii() and length.isdigit() and len(length) <= 20 else None
started = metrics.get("started_at")
logger.info({
"event": "request_body_disconnected",
"route": getattr(request.scope.get("route"), "path", "unknown"),
"body_format": metrics.get("body_format", "unknown"),
"expected_bytes": expected_bytes,
"received_bytes": metrics.get("received_bytes"),
"duration_ms": round((time.monotonic() - started) * 1000) if started is not None else None,
})
message = (
"图片上传连接已中断，请检查网络后重新上传；请先确认任务列表中没有已提交的任务，避免重复提交。"
if metrics else "请求数据传输已中断，请检查网络后重试。"
)
if _is_anthropic_messages_path(request.url.path):
content = {"type": "error", "error": {"type": "invalid_request_error", "message": message}}
elif _is_openai_compatible_path(request.url.path):
content = {"error": {"message": message, "type": "invalid_request_error",
"code": "client_disconnected", "param": None}}
else:
content = {"detail": {"error": message, "code": "client_disconnected"}}
# The peer is usually already gone: 499 describes our server outcome,
# not a promise that the disconnected browser can receive this body.
return JSONResponse(status_code=499, content=content, headers={"Cache-Control": "no-store"})
@app.exception_handler(StarletteHTTPException)
async def http_exception_handler(request: Request, exc: StarletteHTTPException) -> JSONResponse:
if _is_openai_compatible_path(request.url.path):
return _compatible_error_response(request, exc.detail, exc.status_code, exc.headers)
return JSONResponse(
status_code=exc.status_code,
content={
"detail": sanitize_sensitive_data(
jsonable_encoder(exc.detail),
drop_personal_fields=True,
)
},
headers=exc.headers,
)
@app.exception_handler(RequestValidationError)
async def validation_exception_handler(request: Request, exc: RequestValidationError) -> JSONResponse:
if _is_openai_compatible_path(request.url.path):
return _compatible_error_response(request, exc.errors(), 422)
return JSONResponse(
status_code=422,
content={
"detail": sanitize_sensitive_data(
jsonable_encoder(exc.errors()),
drop_personal_fields=True,
)
},
)
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