gongzhiyongandClaude Opus 4.8
b394ce99d5
孤儿 agent 事故修复(2026-06-15 swarm-69e470561bd7-seed 跨 workspace 执行)。 不改去中心化认领逻辑(swarm_dispatch 不动),仅治理 agent pod 生命周期与可观测性: - B1 终态回收: refresh_swarm_run_status 终态后 best-effort stop_launched 回收 pod+secret (此前仅 Manager stop 才回收,自然完成/失败的 run agent 残留 → 孤儿留在共享池抢别的 swarm 任务) - B2 防驱逐: agent pod 加 karpenter.sh/do-not-disrupt(AGENT_POD_ALLOW_DISRUPTION=1 可关) - stop_launched: backend=kubernetes 时按标签删,不再被内存集合 _k8s_swarms 门控(跨重启可靠) - C 重试退避: Task.next_retry_at + fail_task 指数退避 5→30→180s(cap 300, TASK_RETRY_BACKOFF_*), is_task_ready 门控;TASK_MAX_RETRIES 可配 - D 错误上浮: task_executor 失败时聚合 subtask error 到顶层 error(根治通用 "Task failed"), _execute_subtask 打印 LLM 响应片段 - 配额硬上限 16: _clamp_user_cap 契约测试全过: runtime-contract / merge-smoke / workflow-e2e / contract-freeze / max-agents-per-user / security-boundary。 Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
549 lines
24 KiB
Python
549 lines
24 KiB
Python
"""Task execution engine with OpenAI-compatible LLM provider integration.
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Merged from agent_swarm_v4:
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- OpenAI-only provider configuration (OPENAI_*/MODEL_* env vars and custom base URLs)
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- Peer-collaboration hook and specialist-role alignment prompting
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- Preserves model invocation, handoff decision hooks, workspace summarization,
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file-application behavior, and the Manager billing/audit usage attribution
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(X-Agent/X-Agnet headers, usage payload, billing_source)
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"""
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import asyncio
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import json
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import logging
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import os
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import time
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from pathlib import Path
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from typing import Callable, Optional
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from openai import AsyncOpenAI
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from .handoff_logic import should_handoff
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logger = logging.getLogger(__name__)
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class TaskExecutor:
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"""Executes tasks using a configurable OpenAI-compatible API."""
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def __init__(self, agent_id: str, workspace_dir: str):
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self.agent_id = agent_id
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self.workspace_dir = workspace_dir
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api_key = (
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os.getenv("OPENAI_API_KEY")
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or os.getenv("MODEL_API_KEY")
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)
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if not api_key:
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raise ValueError("OPENAI_API_KEY environment variable not set")
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self.model = (
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os.getenv("OPENAI_MODEL")
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or os.getenv("MODEL_NAME")
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or os.getenv("MODEL_ID")
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or "gpt-4o-mini"
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)
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self.api_base = (
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os.getenv("OPENAI_API_BASE")
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or os.getenv("MODEL_API_BASE")
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or "https://api.openai.com/v1"
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)
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self.api_mode = "openai"
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self.client = AsyncOpenAI(api_key=api_key, base_url=self.api_base)
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self.client_type = "openai"
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self.usage = self._empty_usage()
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self.current_context: dict = {}
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async def execute_task(
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self,
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task_id: str,
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description: str,
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context: dict,
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handoff_callback: Optional[Callable] = None,
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agent_capabilities: Optional[list[str]] = None,
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peer_collaboration_callback: Optional[Callable] = None,
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) -> dict:
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logger.info(f"Executing task {task_id}: {description}")
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try:
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started_at = time.time()
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self.current_context = context or {}
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self.usage = self._empty_usage(context)
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multi_agent_leaf_mode = self._multi_agent_leaf_mode(context)
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allow_handoff = self._allow_dynamic_handoff(context)
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if multi_agent_leaf_mode:
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subtasks = [{
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"description": description,
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"complexity": "medium",
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"estimated_time": 30,
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"dependencies": [],
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"required_capabilities": context.get("required_capabilities") or ["general"],
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}]
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elif self._subtask_handoff_enabled():
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subtasks = await self._parse_task(description, context)
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else:
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subtasks = [{
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"description": description,
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"complexity": "medium",
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"estimated_time": 30,
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"dependencies": [],
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"required_capabilities": ["general"],
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}]
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results = []
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for subtask in subtasks:
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if handoff_callback and self._subtask_handoff_enabled() and allow_handoff:
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decision = should_handoff(
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subtask,
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self.agent_id,
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agent_capabilities=agent_capabilities,
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)
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if decision.should_handoff:
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await handoff_callback(
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task_id=task_id,
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subtask=subtask,
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target_capabilities=decision.target_capabilities,
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)
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results.append({
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"subtask": subtask,
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"status": "handed_off",
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"reason": decision.reason,
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"target_capabilities": decision.target_capabilities,
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})
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continue
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results.append(await self._execute_subtask(subtask, task_id, context, peer_collaboration_callback))
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success = all(r["status"] in ["completed", "handed_off"] for r in results)
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awaiting_handoff = any(r["status"] == "handed_off" for r in results)
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payload = {
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"success": success,
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"task_id": task_id,
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"subtasks": results,
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"awaiting_handoff": awaiting_handoff,
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"agent_id": self.agent_id,
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"usage": self._usage_payload(time.time() - started_at),
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}
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if not success:
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# Surface the real per-subtask failure detail as a top-level `error` so the
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# orchestrator records WHY (agent/main.py falls back to a generic "Task failed"
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# when this key is absent — see incident 2026-06-15 swarm-69e470561bd7-seed).
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failed = [r for r in results if r.get("status") not in ("completed", "handed_off")]
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detail = "; ".join(
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f"{((r.get('subtask') or {}).get('description') or 'subtask')[:80]}: "
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f"{r.get('error') or r.get('summary') or 'no detail reported'}"
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for r in failed
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) or "subtask(s) failed without detail"
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payload["error"] = detail
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logger.error(f"Task {task_id} failed: {detail}")
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return payload
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except Exception as e:
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logger.error(f"Error executing task {task_id}: {e}")
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return {
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"success": False,
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"task_id": task_id,
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"error": str(e),
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"agent_id": self.agent_id,
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"usage": self._usage_payload(time.time() - started_at if "started_at" in locals() else 0),
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}
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finally:
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self.current_context = {}
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async def _parse_task(self, description: str, context: dict) -> list[dict]:
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try:
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prompt = f"""You are a task planning assistant. Break down the following programming task into concrete, actionable subtasks.
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Task: {description}
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Context: {json.dumps(context, indent=2)}
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Return a JSON array of subtasks, where each subtask has:
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- description: Clear description of what needs to be done
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- complexity: \"low\", \"medium\", or \"high\"
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- estimated_time: Estimated time in minutes
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- dependencies: List of subtask indices this depends on (empty if none)
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- required_capabilities: List of capabilities needed
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Return ONLY the JSON array, no other text."""
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content = await self._complete(prompt, max_tokens=2000)
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return json.loads(self._strip_json_fence(content))
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except Exception as e:
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logger.error(f"Error parsing task: {e}")
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return [{
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"description": description,
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"complexity": "medium",
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"estimated_time": 30,
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"dependencies": [],
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"required_capabilities": ["general"],
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}]
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async def _execute_subtask(self, subtask: dict, task_id: str, context: dict, peer_collaboration_callback: Optional[Callable]) -> dict:
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content = ""
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try:
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description = subtask["description"]
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workspace_files = self._summarize_workspace()
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workspace_context = self._collect_workspace_context()
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user_prompt = context.get("user_prompt") or context.get("run_goal") or context.get("root_task_description") or ""
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specialist_role = context.get("specialist_role", "general")
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dependency_artifacts = context.get("dependency_artifacts") or []
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implementation_artifacts = [
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artifact for artifact in dependency_artifacts
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if "implementation" in (artifact.get("task_id") or "")
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]
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testing_artifacts = [
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artifact for artifact in dependency_artifacts
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if "testing" in (artifact.get("task_id") or "")
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]
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peer_context = []
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peer_agents = context.get("peer_agents") or []
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should_consult_peers = specialist_role in {"testing", "documentation"}
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if peer_collaboration_callback and peer_agents and should_consult_peers:
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max_peer_consults = int((context or {}).get("max_peer_consults", 2) or 2)
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preferred_roles = []
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if specialist_role in {"testing", "documentation"}:
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preferred_roles = ["implementation"]
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ordered_peers = sorted(
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peer_agents,
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key=lambda peer: 0 if peer.get("role") in preferred_roles else 1,
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)
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for peer in ordered_peers[:max_peer_consults]:
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try:
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reply = await peer_collaboration_callback(
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task_id=task_id,
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target_agent_id=peer.get("agent_id"),
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content=(
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f"Specialist role: {specialist_role}. "
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f"Please provide guidance and confirm behavior for: {description}. "
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f"Original user request: {user_prompt}"
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),
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timeout_seconds=float((context or {}).get("peer_timeout_seconds", 10.0) or 10.0),
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)
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peer_context.append(
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{
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"agent_id": peer.get("agent_id"),
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"role": peer.get("role"),
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"content": reply.get("content", ""),
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}
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)
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except Exception as exc:
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logger.warning(f"Peer collaboration failed with {peer.get('agent_id')}: {exc}")
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prompt = f"""You are a programming assistant working in a collaborative agent system.
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Original user request:
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{user_prompt}
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Your specialist role:
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{specialist_role}
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Task: {description}
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Dependency artifacts from other specialists:
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{json.dumps(dependency_artifacts, indent=2)}
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Implementation artifacts relevant to alignment:
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{json.dumps(implementation_artifacts, indent=2)}
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Testing artifacts relevant to alignment:
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{json.dumps(testing_artifacts, indent=2)}
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Workspace directory: {self.workspace_dir}
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Current workspace files:
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{json.dumps(workspace_files, indent=2)}
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Relevant workspace file contents:
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{json.dumps(workspace_context, indent=2)}
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Peer specialist input:
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{json.dumps(peer_context, indent=2)}
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Alignment requirements:
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- If your role is testing, align your tests with the implementation artifacts and their stated error semantics.
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- If your role is documentation, align your docs with both implementation and testing artifacts.
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- Do not invent behavior that conflicts with dependency artifacts unless you explicitly surface an error.
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- Treat implementation artifacts as the source of truth for API behavior and exception semantics.
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- If peer specialist input conflicts with implementation artifacts, prefer implementation semantics and explain the correction in your changes summary.
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- If your role is documentation or testing, update only your specialist outputs to converge on implementation behavior unless the implementation artifact is clearly missing or contradictory.
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Return your response as JSON with this structure:
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{{
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\"status\": \"completed\" or \"failed\",
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\"summary\": \"Brief description of what was done\",
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\"files\": [{{\"path\": \"relative/path.py\", \"action\": \"write\", \"content\": \"complete file content\"}}],
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\"changes\": \"Detailed description of changes\",
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\"error\": \"Error message if failed, null otherwise\"
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}}
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Return ONLY the JSON, no other text."""
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content = await self._complete(prompt, max_tokens=4000)
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result = self._parse_json_response(content)
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if result.get("status") == "completed":
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apply_result = await self._apply_file_changes(result.get("files", []))
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result["files_modified"] = apply_result["files_modified"]
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result["files_deleted"] = apply_result["files_deleted"]
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if apply_result["errors"]:
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result["status"] = "failed"
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result["error"] = "; ".join(apply_result["errors"])
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logger.warning(
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f"Subtask for task {task_id} failed applying file changes: {result['error']}"
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)
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else:
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# LLM returned 2xx but declared the subtask not completed: log its reason and a
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# bounded snippet of the model output so the failure is diagnosable from agent logs.
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logger.warning(
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"Subtask for task %s reported status=%r (error=%s summary=%s); llm_response[:500]=%s",
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task_id, result.get("status"), result.get("error"),
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result.get("summary"), (content or "").strip()[:500],
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)
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result["subtask"] = subtask
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return result
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except Exception as e:
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# Parse failures / API errors land here; include a bounded model-output snippet
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# (model-generated text, no secrets) to explain why parsing/execution failed.
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logger.error(
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f"Error executing subtask for task {task_id}: {e}; "
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f"llm_response[:500]={(content or '').strip()[:500]}"
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)
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return {
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"subtask": subtask,
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"status": "failed",
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"error": str(e),
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"summary": f"Failed to execute: {e}",
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}
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async def _complete(self, prompt: str, max_tokens: int) -> str:
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extra_headers = self._model_attribution_headers()
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response = await self.client.chat.completions.create(
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model=self.model,
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messages=[{"role": "user", "content": prompt}],
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max_tokens=max_tokens,
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extra_headers=extra_headers or None,
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)
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self._record_openai_usage(response)
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return response.choices[0].message.content or ""
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async def peer_reply(self, *, query: str, capabilities: list[str],
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last_summary: Optional[str], max_tokens: Optional[int] = None) -> dict:
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"""Compose a substantive, grounded reply to a peer agent's query (one bounded LLM call).
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Returns {stance, content, evidence, refs}. `content` is what the requesting agent reads.
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Bounded by PEER_CONSULT_MAX_TOKENS (default 500).
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"""
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if max_tokens is None:
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max_tokens = int(os.getenv("PEER_CONSULT_MAX_TOKENS", "500"))
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workspace_files = self._summarize_workspace()
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workspace_context = self._collect_workspace_context(max_files=8)
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prompt = f"""You are a specialist agent being consulted by a peer in a collaborative swarm.
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Your capabilities: {', '.join(capabilities)}
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Your latest completed work (summary): {last_summary or 'none'}
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A peer asks:
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{query}
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Your workspace files:
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{json.dumps(workspace_files, indent=2)}
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Relevant workspace file contents:
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{json.dumps(workspace_context, indent=2)}
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Answer concisely and concretely, grounded in YOUR actual work/artifacts. Treat implementation
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artifacts as the source of truth for behavior and exception semantics; if the peer's assumption
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conflicts with your work, say so.
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Return ONLY JSON:
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{{\"stance\": \"agree|disagree|info\", \"content\": \"<concise answer to the peer>\", \"evidence\": \"<what in your work supports this>\", \"refs\": [\"relative/file/path\"]}}"""
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content = await self._complete(prompt, max_tokens=max_tokens)
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result = self._parse_json_response(content)
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if not result.get("content"):
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result["content"] = (content or "").strip()[:1000]
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result.setdefault("stance", "info")
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result.setdefault("evidence", "")
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result.setdefault("refs", [])
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return result
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def _empty_usage(self, context: Optional[dict] = None) -> dict:
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plan = ((context or {}).get("orchestration_plan") or {})
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billing = plan.get("billing_context") or {}
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return {
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"model_id": self.model,
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"model_tokens": 0,
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"prompt_tokens": 0,
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"completion_tokens": 0,
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"model_cost_usd": 0.0,
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"runtime_seconds": 0.0,
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"billing_source": billing.get("provider") or os.getenv("BILLING_SOURCE", "unknown"),
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}
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def _record_openai_usage(self, response):
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usage = getattr(response, "usage", None)
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if not usage:
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return
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prompt_tokens = int(getattr(usage, "prompt_tokens", 0) or 0)
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completion_tokens = int(getattr(usage, "completion_tokens", 0) or 0)
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total_tokens = int(getattr(usage, "total_tokens", 0) or prompt_tokens + completion_tokens)
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self._add_usage(prompt_tokens, completion_tokens, total_tokens)
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def _add_usage(self, prompt_tokens: int, completion_tokens: int, total_tokens: int):
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self.usage["prompt_tokens"] += prompt_tokens
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self.usage["completion_tokens"] += completion_tokens
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self.usage["model_tokens"] += total_tokens
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input_cost = float(os.getenv("MODEL_INPUT_COST_PER_1M", "0") or 0)
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output_cost = float(os.getenv("MODEL_OUTPUT_COST_PER_1M", "0") or 0)
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self.usage["model_cost_usd"] += (
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prompt_tokens * input_cost / 1_000_000
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+ completion_tokens * output_cost / 1_000_000
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)
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def _usage_payload(self, runtime_seconds: float) -> dict:
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usage = dict(self.usage)
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usage["runtime_seconds"] = runtime_seconds
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return usage
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def _model_attribution_headers(self) -> dict:
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headers = {}
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mapping = {
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"manager_deployment_id": ["X-Agent-Manager-Deployment-ID", "X-Agnet-Manager-Deployment-ID"],
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"swarm_id": ["X-Agent-Swarm-ID", "X-Agnet-Swarm-ID"],
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"task_id": ["X-Agent-Task-ID", "X-Agnet-Task-ID"],
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"agent_role": ["X-Agent-Agent-Role", "X-Agnet-Agent-Role"],
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"correlation_id": ["X-Correlation-ID"],
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"model_id": ["X-Agent-Model-ID", "X-Agnet-Model-ID"],
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}
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for key, header_names in mapping.items():
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value = self.current_context.get(key)
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if value:
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for header in header_names:
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headers[header] = str(value)
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headers.setdefault("X-Agent-Model-ID", self.model)
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headers.setdefault("X-Agnet-Model-ID", self.model)
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return headers
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def _subtask_handoff_enabled(self) -> bool:
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return os.getenv("ENABLE_SUBTASK_HANDOFF", "false").lower() in {"1", "true", "yes"}
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def _multi_agent_leaf_mode(self, context: Optional[dict]) -> bool:
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return self._subtask_handoff_enabled() and (context or {}).get("workflow_mode") == "multi_agent"
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def _allow_dynamic_handoff(self, context: Optional[dict]) -> bool:
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if (context or {}).get("workflow_mode") != "multi_agent":
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return True
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return bool((context or {}).get("allow_handoff", False))
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def _strip_json_fence(self, content: str) -> str:
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content = content.strip()
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|
if not content.startswith("```"):
|
|
return content
|
|
lines = content.split("\n")
|
|
if lines and lines[0].startswith("```"):
|
|
lines = lines[1:]
|
|
if lines and lines[-1].strip() == "```":
|
|
lines = lines[:-1]
|
|
return "\n".join(lines).strip()
|
|
|
|
def _parse_json_response(self, content: str) -> dict:
|
|
content = self._strip_json_fence(content)
|
|
try:
|
|
return json.loads(content)
|
|
except json.JSONDecodeError:
|
|
start = content.find("{")
|
|
end = content.rfind("}")
|
|
if start == -1 or end == -1 or end <= start:
|
|
raise
|
|
return json.loads(content[start:end + 1])
|
|
|
|
def _summarize_workspace(self, max_files: int = 80) -> list[str]:
|
|
root = Path(self.workspace_dir)
|
|
if not root.exists():
|
|
return []
|
|
ignored_dirs = {".git", "__pycache__", "node_modules", ".venv", "venv"}
|
|
files = []
|
|
for path in root.rglob("*"):
|
|
if len(files) >= max_files:
|
|
break
|
|
if not path.is_file():
|
|
continue
|
|
if any(part in ignored_dirs for part in path.relative_to(root).parts):
|
|
continue
|
|
files.append(str(path.relative_to(root)))
|
|
return sorted(files)
|
|
|
|
def _collect_workspace_context(self, max_files: int = 20, max_bytes_per_file: int = 6000) -> dict[str, str]:
|
|
root = Path(self.workspace_dir)
|
|
if not root.exists():
|
|
return {}
|
|
ignored_dirs = {".git", "__pycache__", "node_modules", ".venv", "venv"}
|
|
allowed_suffixes = {".py", ".js", ".ts", ".tsx", ".jsx", ".json", ".md", ".txt", ".yaml", ".yml", ".toml", ".ini", ".cfg", ".sh"}
|
|
context = {}
|
|
for path in sorted(root.rglob("*")):
|
|
if len(context) >= max_files:
|
|
break
|
|
if not path.is_file():
|
|
continue
|
|
relative = path.relative_to(root)
|
|
if any(part in ignored_dirs for part in relative.parts):
|
|
continue
|
|
if path.suffix and path.suffix.lower() not in allowed_suffixes:
|
|
continue
|
|
try:
|
|
data = path.read_bytes()[:max_bytes_per_file]
|
|
context[str(relative)] = data.decode("utf-8")
|
|
except UnicodeDecodeError:
|
|
continue
|
|
except Exception as e:
|
|
logger.warning(f"Failed to read workspace file {relative}: {e}")
|
|
return context
|
|
|
|
def _resolve_workspace_path(self, file_path: str) -> Path:
|
|
if not file_path or os.path.isabs(file_path):
|
|
raise ValueError(f"Invalid relative path: {file_path}")
|
|
root = Path(self.workspace_dir).resolve()
|
|
resolved = (root / file_path).resolve()
|
|
if root != resolved and root not in resolved.parents:
|
|
raise ValueError(f"Path escapes workspace: {file_path}")
|
|
return resolved
|
|
|
|
async def _apply_file_changes(self, files: list[dict]) -> dict:
|
|
result = {"files_modified": [], "files_deleted": [], "errors": []}
|
|
for file_change in files:
|
|
path = file_change.get("path")
|
|
action = file_change.get("action", "write")
|
|
try:
|
|
target = self._resolve_workspace_path(path)
|
|
if action == "write":
|
|
content = file_change.get("content")
|
|
if content is None:
|
|
raise ValueError(f"Missing content for {path}")
|
|
target.parent.mkdir(parents=True, exist_ok=True)
|
|
target.write_text(content, encoding="utf-8")
|
|
result["files_modified"].append(path)
|
|
elif action == "delete":
|
|
if target.exists():
|
|
target.unlink()
|
|
result["files_deleted"].append(path)
|
|
else:
|
|
raise ValueError(f"Unsupported file action for {path}: {action}")
|
|
except Exception as e:
|
|
logger.error(f"Failed to apply file change {path}: {e}")
|
|
result["errors"].append(f"{path}: {e}")
|
|
return result
|
|
|
|
async def read_file(self, file_path: str) -> Optional[str]:
|
|
try:
|
|
full_path = os.path.join(self.workspace_dir, file_path)
|
|
with open(full_path, "r", encoding="utf-8") as f:
|
|
return f.read()
|
|
except Exception as e:
|
|
logger.error(f"Error reading file {file_path}: {e}")
|
|
return None
|
|
|
|
async def write_file(self, file_path: str, content: str) -> bool:
|
|
try:
|
|
full_path = self._resolve_workspace_path(file_path)
|
|
os.makedirs(os.path.dirname(full_path), exist_ok=True)
|
|
with open(full_path, "w", encoding="utf-8") as f:
|
|
f.write(content)
|
|
logger.info(f"Wrote file: {file_path}")
|
|
return True
|
|
except Exception as e:
|
|
logger.error(f"Error writing file {file_path}: {e}")
|
|
return False
|