mirror of
https://github.com/jxxghp/MoviePilot.git
synced 2026-08-29 03:56:43 +08:00
280 lines
9.1 KiB
Python
280 lines
9.1 KiB
Python
import asyncio
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import uuid
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from typing import AsyncIterator, List, Optional
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from fastapi import APIRouter, Header, Security
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from fastapi.responses import JSONResponse
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from app.schemas.openai import AnthropicErrorDetail as _SchemaAnthropicErrorDetail
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from app.schemas.openai import AnthropicErrorResponse as _SchemaAnthropicErrorResponse
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from app.schemas.openai import AnthropicMessagesRequest as _SchemaAnthropicMessagesRequest
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from app.schemas.openai import AnthropicMessagesResponse as _SchemaAnthropicMessagesResponse
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from app.schemas.openai import AnthropicTextBlock as _SchemaAnthropicTextBlock
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from app.api.endpoints.openai import (
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MODEL_ID,
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_is_manager_unavailable,
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_is_manager_queue_full,
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_run_managed_agent,
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)
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from app.api.openai_utils import (
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build_anthropic_messages,
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build_prompt,
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build_session_id,
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)
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from app.api.presentation.sse import build_sse_response, encode_named_event
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from app.agent.runtime_loader import get_running_agent_manager
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from app.runtime.config import settings
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from app.adapters.web.security.access import anthropic_api_key_header
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ANTHROPIC_ERROR_RESPONSES = {
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400: {"model": _SchemaAnthropicErrorResponse, "description": "请求格式错误"},
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401: {"model": _SchemaAnthropicErrorResponse, "description": "认证失败"},
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422: {"model": _SchemaAnthropicErrorResponse, "description": "请求参数校验失败"},
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500: {"model": _SchemaAnthropicErrorResponse, "description": "服务内部错误"},
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503: {"model": _SchemaAnthropicErrorResponse, "description": "AI Agent 不可用"},
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}
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router = APIRouter(responses=ANTHROPIC_ERROR_RESPONSES)
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SESSION_PREFIX = "anthropic:"
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def _anthropic_error_response(
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message: str,
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status_code: int,
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error_type: str = "invalid_request_error",
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) -> JSONResponse:
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return JSONResponse(
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status_code=status_code,
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content=_SchemaAnthropicErrorResponse(
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error=_SchemaAnthropicErrorDetail(type=error_type, message=message)
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).model_dump(),
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)
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def _check_auth(api_key: Optional[str]) -> Optional[JSONResponse]:
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"""
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Anthropic 兼容接口以 API_TOKEN 认证受信客户端，认证通过即按管理员级 Agent 集成处理。
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"""
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if not api_key or api_key != settings.API_TOKEN:
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return _anthropic_error_response(
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"invalid x-api-key",
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401,
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error_type="authentication_error",
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)
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return None
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def _manager_execution_error(error: BaseException) -> JSONResponse:
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"""把 AgentManager 稳定错误映射为 Anthropic 兼容错误响应。"""
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if _is_manager_unavailable(error):
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return _anthropic_error_response(
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"MoviePilot AI agent is unavailable.",
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503,
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error_type="api_error",
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)
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if _is_manager_queue_full(error):
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return _anthropic_error_response(
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str(error),
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429,
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error_type="rate_limit_error",
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)
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return _anthropic_error_response(str(error), 500, error_type="api_error")
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async def _stream_anthropic_response(
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manager,
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session_id: str,
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user_id: str,
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prompt: str,
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images: List[str],
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) -> AsyncIterator[str]:
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event_queue: asyncio.Queue = asyncio.Queue()
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message_id = f"msg_{uuid.uuid4().hex}"
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async def _run_agent():
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try:
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await _run_managed_agent(
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manager=manager,
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session_id=session_id,
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user_id=user_id,
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username="anthropic-client",
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source="anthropic",
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prompt=prompt,
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images=images,
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stream_mode=True,
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event_queue=event_queue,
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)
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except asyncio.CancelledError:
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await event_queue.put({"error": "MoviePilot AI agent is unavailable."})
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except Exception as exc:
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await event_queue.put({"error": str(exc)})
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finally:
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await event_queue.put(None)
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task = asyncio.create_task(_run_agent())
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try:
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yield encode_named_event(
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"message_start",
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{
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"type": "message_start",
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"message": {
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"id": message_id,
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"type": "message",
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"role": "assistant",
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"content": [],
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"model": MODEL_ID,
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"stop_reason": None,
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"stop_sequence": None,
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"usage": {"input_tokens": 0, "output_tokens": 0},
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},
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},
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)
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yield encode_named_event(
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"content_block_start",
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{
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"type": "content_block_start",
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"index": 0,
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"content_block": {"type": "text", "text": ""},
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},
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)
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while True:
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item = await event_queue.get()
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if item is None:
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break
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if isinstance(item, dict) and item.get("error"):
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yield encode_named_event(
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"error",
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{
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"type": "error",
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"error": {
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"type": "api_error",
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"message": str(item["error"]),
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},
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},
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)
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yield encode_named_event("message_stop", {"type": "message_stop"})
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return
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text = str(item or "")
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if not text:
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continue
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yield encode_named_event(
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"content_block_delta",
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{
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"type": "content_block_delta",
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"index": 0,
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"delta": {"type": "text_delta", "text": text},
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},
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)
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yield encode_named_event(
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"content_block_stop",
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{"type": "content_block_stop", "index": 0},
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)
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yield encode_named_event(
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"message_delta",
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{
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"type": "message_delta",
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"delta": {"stop_reason": "end_turn", "stop_sequence": None},
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"usage": {"output_tokens": 0},
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},
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)
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yield encode_named_event("message_stop", {"type": "message_stop"})
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finally:
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await manager.clear_session(session_id=session_id, user_id=user_id)
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if not task.done():
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task.cancel()
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try:
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await task
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except asyncio.CancelledError:
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pass
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@router.post(
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"/messages",
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summary="Anthropic compatible messages",
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response_model=_SchemaAnthropicMessagesResponse,
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responses={
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200: {
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"description": "Anthropic message 或 SSE 数据流",
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"content": {
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"text/event-stream": {"schema": {"type": "string"}},
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},
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}
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},
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)
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async def messages(
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payload: _SchemaAnthropicMessagesRequest,
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x_api_key: Optional[str] = Security(anthropic_api_key_header),
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anthropic_version: Optional[str] = Header(default=None, alias="anthropic-version"),
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):
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auth_error = _check_auth(x_api_key)
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if auth_error:
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return auth_error
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if not settings.AI_AGENT_ENABLE:
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return _anthropic_error_response(
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"MoviePilot AI agent is disabled.",
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503,
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error_type="api_error",
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)
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manager = get_running_agent_manager()
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if manager is None:
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return _anthropic_error_response(
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"MoviePilot AI agent is unavailable.",
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503,
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error_type="api_error",
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)
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normalized_messages = build_anthropic_messages(payload.system, payload.messages)
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try:
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prompt, images = build_prompt(normalized_messages, use_server_session=False)
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except ValueError as exc:
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return _anthropic_error_response(str(exc), 400)
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session_seed = anthropic_version or "anthropic"
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session_id = build_session_id(f"{session_seed}:{uuid.uuid4().hex}", SESSION_PREFIX)
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if payload.stream:
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return build_sse_response(
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_stream_anthropic_response(
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manager=manager,
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session_id=session_id,
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user_id=session_id,
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prompt=prompt,
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images=images,
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),
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)
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collected_messages = []
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try:
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result, collected_messages = await _run_managed_agent(
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manager=manager,
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session_id=session_id,
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user_id=session_id,
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username="anthropic-client",
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source="anthropic",
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prompt=prompt,
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images=images,
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stream_mode=False,
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)
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except Exception as exc:
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return _manager_execution_error(exc)
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finally:
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await manager.clear_session(session_id=session_id, user_id=session_id)
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content = "\n\n".join(
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message.strip()
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for message in collected_messages
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if message and message.strip()
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).strip()
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if not content and result:
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content = str(result).strip()
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if not content:
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content = "未获得有效回复。"
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return _SchemaAnthropicMessagesResponse(
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id=f"msg_{uuid.uuid4().hex}",
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content=[_SchemaAnthropicTextBlock(text=content)],
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model=MODEL_ID,
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)
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