117 lines
5.9 KiB
Python
117 lines
5.9 KiB
Python
"""通信中转服务：正向下发任务指令、反向回传结果/日志，RequestID+AgentID 关联。"""
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import logging
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import httpx
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import redis.asyncio as aioredis
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from app.config import settings
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from app.constants import AgentStatus, TaskStatus
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from app.models.schemas import TaskResult
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from app.repository.agent_repo import AgentRepo
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from app.repository.task_repo import TaskRepo
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from app.services.notifier import TaskNotifier
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logger = logging.getLogger(__name__)
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class RelayService:
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"""网关作为唯一通信中枢：正向把任务指令推送到 Agent 端点，反向接收结果回传。"""
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def __init__(self, redis: aioredis.Redis, task_repo: TaskRepo | None = None):
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self.redis = redis
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self.task_repo = task_repo or TaskRepo(redis)
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self.agent_repo = AgentRepo(redis)
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async def dispatch_command(self, agent_id: str, request_id: str, payload: dict) -> tuple[bool, str]:
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"""正向：向 Agent 真实 HTTP 推送任务指令（POST {agent.endpoint}/tasks/{request_id}）。
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返回 (ok, reason)：成功时 (True, "")；Agent 不存在 / 端点缺失 / 网络失败 /
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非 202 均返回 (False, 原因描述)，由调度器回退任务状态并释放负载。
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"""
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agent = await self.agent_repo.get(agent_id)
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if not agent:
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logger.warning("relay dispatch failed: agent not found agent=%s request=%s", agent_id, request_id)
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return False, "Agent 不存在或已注销"
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if not agent.endpoint:
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logger.warning("relay dispatch failed: endpoint empty agent=%s request=%s", agent_id, request_id)
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return False, "Agent 未配置 endpoint"
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task = await self.task_repo.get(request_id)
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url = f"{agent.endpoint.rstrip('/')}/tasks/{request_id}"
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body = {
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"auth": settings.gateway_auth,
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"request_id": request_id,
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"payload": payload,
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"cli_session_id": getattr(task, "cli_session_id", None) if task else None,
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"task_type": getattr(task, "task_type", None) if task else None,
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"task_tags": getattr(task, "task_tags", None) if task else None,
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"timeout": getattr(task, "timeout", None) if task else None,
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}
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try:
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async with httpx.AsyncClient(timeout=5.0) as client:
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resp = await client.post(url, json=body)
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except httpx.HTTPError as e:
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logger.error("relay dispatch network error agent=%s request=%s err=%s", agent_id, request_id, e)
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await self._log(agent_id, request_id, "dispatch", f"push failed: {e}")
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return False, f"推送失败: {e}"
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if resp.status_code != 202:
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logger.warning("relay dispatch http %s agent=%s request=%s body=%s",
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resp.status_code, agent_id, request_id, resp.text[:200])
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await self._log(agent_id, request_id, "dispatch", f"push failed http {resp.status_code}")
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return False, f"推送失败: Agent 返回 HTTP {resp.status_code}（期望 202）"
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await self._log(agent_id, request_id, "dispatch", f"command pushed to {agent.endpoint}")
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logger.info("relay dispatch ok agent=%s request=%s url=%s", agent_id, request_id, url)
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return True, ""
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_TERMINAL = {TaskStatus.SUCCESS, TaskStatus.FAILED}
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async def on_result(self, result: TaskResult) -> bool:
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"""反向：Agent 回传结果，更新任务状态并记录日志。
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终态保护：任务已处于终态（如已取消置 failed）时，忽略本次任务状态覆盖，
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但匹配的 Agent 仍会释放负载并置回 ready。
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"""
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task = await self.task_repo.get(result.request_id)
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if not task:
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logger.warning("result for unknown task request=%s", result.request_id)
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return False
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if task.agent_id and task.agent_id != result.agent_id:
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logger.warning("result agent mismatch request=%s expected=%s got=%s",
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result.request_id, task.agent_id, result.agent_id)
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return False
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already_terminal = task.status in self._TERMINAL
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if not already_terminal:
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await self.task_repo.update(
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result.request_id,
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status=result.status,
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progress=result.progress,
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result=result.result,
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error_info=result.error_info,
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)
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await self.task_repo.mark_finished(result.request_id)
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# 释放 Agent 算力（任务确实绑定在该 Agent 时才释放）
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if task.agent_id == result.agent_id:
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await self.agent_repo.adjust_load(result.agent_id, -1)
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# Agent 空闲，置回就绪（若已被手动置为不可用则保持不可用，不会复活）
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if task.agent_id:
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await self.agent_repo.mark_idle(task.agent_id)
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await self._log(result.agent_id, result.request_id, "result", f"result received status={result.status.value}")
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# 任务到达终态，通知对应 CLI 会话（若携带了 cli_session_id）
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if not already_terminal and task.cli_session_id:
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finished = await self.task_repo.get(result.request_id)
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if finished:
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await TaskNotifier(self.redis).publish_task_done(finished)
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logger.info("task result request=%s agent=%s status=%s", result.request_id, result.agent_id, result.status.value)
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return True
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async def on_progress(self, request_id: str, agent_id: str, progress: int) -> bool:
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await self.task_repo.update(request_id, progress=progress)
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await self._log(agent_id, request_id, "progress", f"progress {progress}%")
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return True
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async def _log(self, agent_id: str, request_id: str, action: str, message: str) -> None:
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from app.repository.log_repo import LogRepo
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await LogRepo(self.redis).append(
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source="gateway", scope="task", message=message,
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request_id=request_id, agent_id=agent_id,
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) |