Files
mai-bot/plugin-templates/MaiBot-Napcat-Adapter/runtime/router.py

320 lines
12 KiB
Python

"""NapCat 事件路由协调器。"""
from __future__ import annotations
from typing import Any, Callable, Dict, Mapping, Optional, Protocol
import asyncio
from ..config import NapCatPluginSettings
from ..types import NapCatPayloadDict
from .bundle import NapCatRuntimeBundle
class _GatewayCapabilityProtocol(Protocol):
"""插件网关能力协议。"""
async def route_message(
self,
gateway_name: str,
message: Dict[str, Any],
*,
route_metadata: Optional[Dict[str, Any]] = None,
external_message_id: str = "",
dedupe_key: str = "",
) -> bool:
"""向 Host 注入一条消息。"""
...
class NapCatEventRouter:
"""协调 NapCat 运行时组件处理各类平台事件。"""
def __init__(
self,
gateway_capability: _GatewayCapabilityProtocol,
logger: Any,
gateway_name: str,
load_settings: Callable[[], NapCatPluginSettings],
) -> None:
"""初始化事件路由器。
Args:
gateway_capability: SDK 提供的消息网关能力对象。
logger: 插件日志对象。
gateway_name: 当前消息网关名称。
load_settings: 返回当前生效插件配置的回调。
"""
self._gateway_capability = gateway_capability
self._logger = logger
self._gateway_name = gateway_name
self._load_settings = load_settings
self._runtime: Optional[NapCatRuntimeBundle] = None
def bind_runtime(self, runtime: NapCatRuntimeBundle) -> None:
"""绑定当前路由器使用的运行时依赖。
Args:
runtime: 已初始化的运行时组件集合。
"""
self._runtime = runtime
def reset_caches(self) -> None:
"""重置与路由相关的短期缓存。"""
runtime = self._runtime
if runtime is None:
return
runtime.official_bot_guard.clear_cache()
async def handle_transport_payload(self, payload: NapCatPayloadDict) -> None:
"""处理来自传输层的非 echo 载荷。
Args:
payload: NapCat 推送的原始事件数据。
"""
post_type = str(payload.get("post_type") or "").strip()
if post_type == "message":
await self.handle_inbound_message(payload)
return
if post_type == "notice":
await self.handle_notice_event(payload)
return
if post_type == "meta_event":
await self.handle_meta_event(payload)
async def handle_inbound_message(self, payload: NapCatPayloadDict) -> None:
"""处理单条 NapCat 入站消息并注入 Host。
Args:
payload: NapCat / OneBot 推送的原始消息事件。
"""
runtime = self._require_runtime()
settings = self._load_settings()
self_id = str(payload.get("self_id") or "").strip()
if self_id:
await runtime.runtime_state.report_connected(self_id, settings.napcat_server)
sender = payload.get("sender", {})
if not isinstance(sender, Mapping):
sender = {}
sender_user_id = str(payload.get("user_id") or sender.get("user_id") or "").strip()
if not sender_user_id:
return
group_id = str(payload.get("group_id") or "").strip()
if self_id and sender_user_id == self_id and settings.filters.ignore_self_message:
return
if not runtime.chat_filter.is_inbound_chat_allowed(sender_user_id, group_id, settings.chat):
return
if await runtime.official_bot_guard.should_reject(
sender_user_id=sender_user_id,
group_id=group_id,
ban_qq_bot=settings.chat.ban_qq_bot,
):
return
try:
message_dict = await runtime.inbound_codec.build_message_dict(payload, self_id, sender_user_id, sender)
except ValueError as exc:
self._logger.warning(f"NapCat 入站消息格式不受支持,已丢弃: {exc}")
return
route_metadata = self._build_route_metadata(self_id, settings.napcat_server.connection_id)
external_message_id = str(payload.get("message_id") or "").strip()
accepted = await self._gateway_capability.route_message(
gateway_name=self._gateway_name,
message=message_dict,
route_metadata=route_metadata,
external_message_id=external_message_id,
dedupe_key=external_message_id,
)
if not accepted:
self._logger.debug(f"Host 丢弃了 NapCat 入站消息: {external_message_id or '无消息 ID'}")
async def handle_notice_event(self, payload: NapCatPayloadDict) -> None:
"""处理 NapCat ``notice`` 事件并注入 Host。
Args:
payload: NapCat 推送的通知事件。
"""
runtime = self._require_runtime()
settings = self._load_settings()
self_id = str(payload.get("self_id") or "").strip()
if self_id:
await runtime.runtime_state.report_connected(self_id, settings.napcat_server)
await runtime.ban_tracker.record_notice(payload)
await self.route_notice_payload(payload, self_id, settings.napcat_server.connection_id)
async def route_notice_payload(
self,
payload: NapCatPayloadDict,
self_id: str,
connection_id: str,
) -> None:
"""将单条通知载荷转换并注入 Host。
Args:
payload: NapCat 通知载荷。
self_id: 当前机器人账号 ID。
connection_id: 当前连接标识。
"""
runtime = self._require_runtime()
message_dict = await runtime.notice_codec.build_notice_message_dict(payload)
if message_dict is None:
return
route_metadata = self._build_route_metadata(self_id, connection_id)
external_message_id = str(payload.get("message_id") or "").strip()
dedupe_key = runtime.notice_codec.build_notice_dedupe_key(payload) or ""
accepted = await self._gateway_capability.route_message(
gateway_name=self._gateway_name,
message=message_dict,
route_metadata=route_metadata,
external_message_id=external_message_id,
dedupe_key=dedupe_key,
)
if not accepted:
self._logger.debug(f"Host 丢弃了 NapCat 通知事件: {external_message_id or dedupe_key or '无消息 ID'}")
async def emit_natural_lift_notice(self, payload: NapCatPayloadDict) -> None:
"""注入一条由适配器合成的自然解除禁言通知。
Args:
payload: 合成后的 NapCat 通知载荷。
"""
settings = self._load_settings()
self_id = str(payload.get("self_id") or "").strip()
await self.route_notice_payload(payload, self_id, settings.napcat_server.connection_id)
async def handle_meta_event(self, payload: NapCatPayloadDict) -> None:
"""处理 NapCat ``meta_event`` 事件。
Args:
payload: NapCat 推送的元事件。
"""
runtime = self._require_runtime()
settings = self._load_settings()
meta_event_type = str(payload.get("meta_event_type") or "").strip()
self_id = str(payload.get("self_id") or "").strip()
should_report_connected = False
if meta_event_type == "lifecycle":
should_report_connected = str(payload.get("sub_type") or "").strip() == "connect"
elif meta_event_type == "heartbeat":
status = payload.get("status", {})
if not isinstance(status, Mapping):
status = {}
should_report_connected = bool(status.get("online", False)) and bool(status.get("good", False))
if self_id and should_report_connected:
await runtime.runtime_state.report_connected(self_id, settings.napcat_server)
elif meta_event_type == "heartbeat" and not should_report_connected:
await runtime.runtime_state.report_disconnected()
await runtime.heartbeat_monitor.observe_meta_event(payload, settings.napcat_server.heartbeat_interval)
await runtime.notice_codec.handle_meta_event(payload)
async def bootstrap_adapter_runtime_state(self) -> None:
"""在连接建立后主动获取账号信息并激活消息网关路由。"""
runtime = self._require_runtime()
settings = self._load_settings()
max_attempts = 3
last_error: Optional[Exception] = None
for attempt in range(1, max_attempts + 1):
try:
login_info = await runtime.query_service.get_login_info()
self_id = self._extract_self_id_from_login_response(login_info)
await runtime.runtime_state.report_connected(self_id, settings.napcat_server)
await runtime.heartbeat_monitor.start(self_id, settings.napcat_server.heartbeat_interval)
await runtime.ban_tracker.start()
return
except asyncio.CancelledError:
raise
except Exception as exc:
last_error = exc
self._logger.warning(f"NapCat 消息网关获取登录信息失败,第 {attempt}/{max_attempts} 次重试: {exc}")
if attempt < max_attempts:
await asyncio.sleep(1.0)
if last_error is not None:
self._logger.error(f"NapCat 消息网关未能完成路由激活,连接将保持只接收状态: {last_error}")
async def handle_transport_disconnected(self) -> None:
"""处理传输层断开事件。"""
runtime = self._require_runtime()
await runtime.heartbeat_monitor.stop()
await runtime.ban_tracker.stop()
self.reset_caches()
await runtime.runtime_state.report_disconnected()
async def handle_heartbeat_timeout(self, self_id: str) -> None:
"""处理 NapCat 心跳长时间未更新的情况。
Args:
self_id: 当前机器人账号 ID。
"""
runtime = self._require_runtime()
if self_id:
self._logger.warning(f"NapCat Bot {self_id} 心跳超时,暂时将消息网关标记为未就绪")
else:
self._logger.warning("NapCat 心跳超时,暂时将消息网关标记为未就绪")
await runtime.runtime_state.report_disconnected()
def _require_runtime(self) -> NapCatRuntimeBundle:
"""返回当前已绑定的运行时依赖。
Returns:
NapCatRuntimeBundle: 已初始化的运行时依赖。
Raises:
RuntimeError: 当运行时尚未绑定时抛出。
"""
runtime = self._runtime
if runtime is None:
raise RuntimeError("NapCat 运行时尚未初始化")
return runtime
@staticmethod
def _build_route_metadata(self_id: str, connection_id: str) -> Dict[str, Any]:
"""构造注入 Host 时使用的路由元数据。
Args:
self_id: 当前机器人账号 ID。
connection_id: 当前连接标识。
Returns:
Dict[str, Any]: 路由元数据字典。
"""
route_metadata: Dict[str, Any] = {}
if self_id:
route_metadata["self_id"] = self_id
if connection_id:
route_metadata["connection_id"] = connection_id
return route_metadata
@staticmethod
def _extract_self_id_from_login_response(response: Optional[Dict[str, Any]]) -> str:
"""从 ``get_login_info`` 查询结果中提取当前账号 ID。
Args:
response: NapCat 返回的登录信息字典。
Returns:
str: 规范化后的账号 ID 字符串。
Raises:
ValueError: 当响应中缺少有效账号 ID 时抛出。
"""
if not isinstance(response, Mapping):
raise ValueError("get_login_info 响应缺少 data 字段")
self_id = str(response.get("user_id") or "").strip()
if not self_id:
raise ValueError("get_login_info 响应缺少有效的 user_id")
return self_id