hmo
1cdef8da7e
- token.sensenova.cn托管同款deepseek-v4-flash,实测3.2s vs OCG 45s(开盘高峰) - 通道顺序: sensenova→OCG key池→gateway; 空输出直接切下一通道(SN无pro)
325 lines
14 KiB
Python
325 lines
14 KiB
Python
#!/usr/bin/env python3
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"""llm_client.py — 共享 LLM 客户端（直连上游 + gateway 兜底）
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⚠️ 架构说明（2026-07-21 事故后重写）：
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hermes gateway(:8643) 的 /v1/chat/completions 不是透传，而是完整 agent 运行时——
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每个请求都会创建一个带工具（terminal/websearch/patch 等）的 agent 会话。
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曾导致：一次重评请求螺旋 35 分钟、44 次 terminal 调用、输入累积到 153k token，
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客户端 150s 超时后服务端继续空转，重试又叠加新会话，网关被自己人打满。
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因此重评等批量分析调用【直连 OCG 上游】（裸 completion，无 agent），
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hermes gateway 仅作兜底。监控仍可用 gateway_alive() 观察网关健康。
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用法:
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from llm_client import call_llm, REASSESS_MODEL, gateway_alive, ocg_alive
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result = call_llm(prompt)
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if result["ok"]:
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text = result["content"]
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"""
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import json
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import time
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import urllib.request
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import urllib.error
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# ── 常量：所有重评调用统一使用 ──
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# 2026-07-21 A/B 实测：flash 与 pro 在新 prompt 下质量差距微弱，flash 快 ~40%
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REASSESS_MODEL = "deepseek-v4-flash"
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# flash 对某些 prompt 会稳定返回空内容（688617 实测三连空），pro 能正常输出。
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# 空输出时自动升级到 pro 重试一次。
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FALLBACK_MODEL = "deepseek-v4-pro"
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# 主通道：OCG 上游直连（与 hermes providers.ocg-key6 同源）
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# key 运行时从 hermes config 读取（SSOT，不落盘到代码库）
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OCG_URL = "https://opencode.ai/zen/go/v1/chat/completions"
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_HERMES_CONFIG = "/home/hmo/.hermes/profiles/position-analyst/config.yaml"
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def _load_ocg_key():
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"""从 hermes config.yaml 读取 ocg-key6（单点数据源）。读不到则禁用直连通道。"""
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import re
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try:
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with open(_HERMES_CONFIG, encoding="utf-8") as f:
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text = f.read()
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m = re.search(r'ocg-key6:\s*\n\s*api_key:\s*(\S+)', text)
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if m:
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return m.group(1)
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except Exception as e:
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print(f" [LLM] 无法从 hermes config 读取 ocg-key6: {e}", flush=True)
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return None
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def _load_key_pool():
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"""从 hermes config.yaml 解析全部 OCG key，按 AgentsMeeting /api/keys 的
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实时状态排序（可用优先、用量低优先）。失败回退到单 key6。
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返回 [(key_id, api_key), ...]，按优先级排序。"""
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import re
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fallback = [("key6", _load_ocg_key())] if _load_ocg_key() else []
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try:
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with open(_HERMES_CONFIG, encoding="utf-8") as f:
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text = f.read()
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# 解析 providers 下的 ocg 块: name + api_key
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blocks = re.findall(r'^\s{2}(ocg[\w\-]*):\s*\n\s*api_key:\s*(\S+)', text, re.M)
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if not blocks:
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return fallback
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# provider名 → key_id 映射（ocg-keyN→keyN, ocg-3→key3, ocg-hy3→key1, ocg-new→key2）
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name2id = {"ocg-key6": "key6", "ocg-key5": "key5", "ocg-key4": "key4",
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"ocg-3": "key3", "ocg-hy3": "key1", "ocg-new": "key2"}
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kv = {}
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for name, key in blocks:
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kid = name2id.get(name)
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if kid and kid != "key7":
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kv[kid] = key
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if not kv:
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return fallback
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# 查询 AgentsMeeting /api/keys 实时状态
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import json as _json
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status = {}
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try:
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req = urllib.request.Request("http://127.0.0.1:5803/api/keys")
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with urllib.request.build_opener(urllib.request.ProxyHandler({})).open(req, timeout=5) as r:
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data = _json.loads(r.read().decode())
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for k in data.get("keys", []):
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m_ok = k.get("monthly", {}).get("status") == "ok"
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r_ok = k.get("rolling", {}).get("status") == "ok"
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usage = k.get("monthly", {}).get("usage_percent", 99)
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status[k["key_id"]] = (m_ok and r_ok, usage)
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except Exception:
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# API 不可达时默认全可用、key6 优先
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order = ["key6", "key5", "key4", "key2", "key1", "key3"]
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return [(k, kv[k]) for k in order if k in kv]
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# 可用且用量低优先；key6 在用量相同时优先（沿用现有配置）
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scored = []
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for kid, key in kv.items():
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ok, usage = status.get(kid, (True, 50))
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if ok:
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scored.append((usage - (2 if kid == "key6" else 0), kid, key))
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scored.sort()
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pool = [(kid, key) for _, kid, key in scored]
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return pool or fallback
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except Exception as e:
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print(f" [LLM] key池加载失败，回退单key: {e}", flush=True)
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return fallback
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_KEY_POOL = None
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_KEY_POOL_TS = 0
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def _get_key_pool():
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"""key 池缓存 5 分钟。LLM_KEY_OFFSET 环境变量：并发 worker 起始 key 错开，
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避免 N 个进程同时压同一个首选 key（2026-07-24 并发分片配套）。"""
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global _KEY_POOL, _KEY_POOL_TS
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import time as _t, os as _os
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if not _KEY_POOL or (_t.time() - _KEY_POOL_TS) > 300:
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_KEY_POOL = _load_key_pool()
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_KEY_POOL_TS = _t.time()
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if _KEY_POOL:
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_off = int(_os.environ.get("LLM_KEY_OFFSET", "0") or 0)
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if _off and len(_KEY_POOL) > 1:
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_off = _off % len(_KEY_POOL)
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_KEY_POOL = _KEY_POOL[_off:] + _KEY_POOL[:_off]
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print(f" [LLM] key池: {[k for k, _ in _KEY_POOL]}" + (f" (offset={_off})" if _off else ""), flush=True)
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return _KEY_POOL
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_OCG_KEY = _load_ocg_key()
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OCG_HEADERS = {
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"Content-Type": "application/json",
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"Authorization": f"Bearer {_OCG_KEY}",
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"User-Agent": "curl/8.5.0", # OCG UA 风控要求（与 hermes 配置一致）
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} if _OCG_KEY else None
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# 兜底通道：hermes gateway（注意：会走 agent 运行时，仅应急）
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GATEWAY = "http://127.0.0.1:8643/v1/chat/completions"
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GATEWAY_MODELS = "http://127.0.0.1:8643/v1/models"
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GATEWAY_AUTH = "Bearer hermes123"
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# ── SenseNova 备用通道（2026-07-24 老爸：并发要快）──
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# token.sensenova.cn 托管同款 deepseek-v4-flash，实测 3.2s vs OCG 45s（开盘高峰）。
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# 公测免费，与 OCG 不同上游、不共享拥塞。不支持 deepseek-v4-pro 升级（404）。
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# key 从 hermes config 的 sense-nova provider 读取（SSOT，不落盘）。
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SN_URL = "https://token.sensenova.cn/v1/chat/completions"
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def _load_sn_key():
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"""从 hermes config.yaml 读 sense-nova 的 api_key。读不到则禁用该通道。"""
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import re
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try:
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with open(_HERMES_CONFIG, encoding="utf-8") as f:
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text = f.read()
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m = re.search(r'sense-nova:\s*\n\s*api_key:\s*(\S+)', text)
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if m:
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return m.group(1)
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except Exception:
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pass
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return None
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_SN_KEY = _load_sn_key()
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SN_HEADERS = {
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"Content-Type": "application/json",
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"Authorization": f"Bearer {_SN_KEY}",
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"User-Agent": "curl/8.5.0",
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} if _SN_KEY else None
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def _post(url, headers, payload, timeout):
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"""单次 POST，返回 (ok, content_or_error)。"""
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req = urllib.request.Request(url, data=payload, headers=headers)
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opener = urllib.request.build_opener(urllib.request.ProxyHandler({}))
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resp = opener.open(req, timeout=timeout)
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body = json.loads(resp.read().decode())
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if "choices" not in body:
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return False, f"API响应无choices字段: {str(body)[:200]}"
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return True, body["choices"][0]["message"]["content"]
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def ocg_alive(timeout=8):
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"""OCG 上游可达性快检（极小请求）。key 缺失直接 False。"""
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if not OCG_HEADERS:
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return False
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try:
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payload = json.dumps({
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"model": REASSESS_MODEL,
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"messages": [{"role": "user", "content": "ping"}],
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"max_tokens": 1,
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}).encode()
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_post(OCG_URL, OCG_HEADERS, payload, timeout)
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return True
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except Exception:
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return False
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def gateway_alive(timeout=5):
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"""快速预检 hermes gateway 是否存活。失败立刻返回 False，不阻塞。"""
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try:
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req = urllib.request.Request(GATEWAY_MODELS,
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headers={"Authorization": GATEWAY_AUTH})
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urllib.request.build_opener(urllib.request.ProxyHandler({})).open(req, timeout=timeout)
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return True
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except Exception:
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return False
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def call_llm(prompt, model=None, max_tokens=4096, timeout=150,
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retries=1, backoff=20, system=None):
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"""调用 LLM：OCG 直连优先，hermes gateway 兜底。带重试和结构化日志。
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Args:
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prompt: 用户消息内容
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model: 模型名（默认 REASSESS_MODEL）
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max_tokens: 最大输出 token 数
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timeout: 单次调用超时（秒）
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retries: 每个通道的失败重试次数
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backoff: 重试间隔（秒）
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system: 可选 system message
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Returns:
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{ok, content, error, model, elapsed, attempts, channel}
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永远不抛异常到调用方。
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"""
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model_name = model or REASSESS_MODEL
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# OCG/deepseek 对过小 max_tokens 会短路返回空（2026-07-22 实测 max_tokens=64 必空）
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if max_tokens < 512:
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max_tokens = 512
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messages = []
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if system:
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messages.append({"role": "system", "content": system})
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messages.append({"role": "user", "content": prompt})
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payload = json.dumps({
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"model": model_name,
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"messages": messages,
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"max_tokens": max_tokens,
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}).encode()
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# ── 构建通道列表：SenseNova(快,同款model) → key池(OCG直连) → gateway 兜底 ──
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# 2026-07-24：OCG开盘高峰45s+/call且空输出高发，SenseNova托管同款deepseek-v4-flash实测3.2s
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channels = []
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if SN_HEADERS:
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channels.append(("sensenova", SN_URL, SN_HEADERS))
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pool = _get_key_pool()
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for kid, key in pool:
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if key:
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channels.append((f"ocg:{kid}", OCG_URL, {
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"Content-Type": "application/json",
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"Authorization": f"Bearer {key}",
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"User-Agent": "curl/8.5.0",
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}))
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channels.append(("gateway", GATEWAY, {
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"Content-Type": "application/json",
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"Authorization": GATEWAY_AUTH,
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}))
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total_attempts = 0
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last_err = "未知错误"
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t_start = time.monotonic()
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for ch_name, ch_url, ch_headers in channels:
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for attempt in range(retries + 1):
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total_attempts += 1
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t0 = time.monotonic()
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try:
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ok, result = _post(ch_url, ch_headers, payload, timeout)
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elapsed = time.monotonic() - t0
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if ok:
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# ── 空输出视为失败：先同 key 升 FALLBACK_MODEL(pro)，仍空则不返回，
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# 落到外循环切下一个 key（2026-07-22 实测：空输出会"假成功"阻断轮换）──
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if not result.strip():
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# SenseNova 不托管 deepseek-v4-pro（404），空输出直接切下一通道
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if ch_name == "sensenova":
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print(f" [LLM] {ch_name} 空输出视为失败，切换下一通道...", flush=True)
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last_err = "empty content"
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continue
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if model_name != FALLBACK_MODEL and ch_name.startswith("ocg"):
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print(f" [LLM] {ch_name} {model_name} 空输出({elapsed:.1f}s)，"
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f"升级 {FALLBACK_MODEL} 重试...", flush=True)
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esc_payload = json.dumps({
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"model": FALLBACK_MODEL, "messages": messages,
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"max_tokens": max_tokens,
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}).encode()
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try:
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ok2, result2 = _post(ch_url, ch_headers, esc_payload, timeout)
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total_attempts += 1
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if ok2 and result2.strip():
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print(f" [LLM] 升级 {FALLBACK_MODEL} 成功, 输出{len(result2)}字", flush=True)
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return {
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"ok": True, "content": result2, "error": None,
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"model": FALLBACK_MODEL,
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"elapsed": time.monotonic() - t_start,
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"attempts": total_attempts, "channel": ch_name + "+esc",
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}
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print(f" [LLM] {ch_name} 升级 {FALLBACK_MODEL} 仍空", flush=True)
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except Exception as e2:
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print(f" [LLM] 升级 {FALLBACK_MODEL} 异常: {str(e2)[:100]}", flush=True)
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# 仍空 → 不 return，作为本通道失败处理，外循环切下一个 key
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last_err = "empty content"
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print(f" [LLM] {ch_name} 空输出视为失败，切换下一 key...", flush=True)
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continue
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print(f" [LLM] {ch_name} 尝试{attempt+1}/{retries+1} 成功, "
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f"{elapsed:.1f}s, 输出{len(result)}字, model={model_name}", flush=True)
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return {
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"ok": True, "content": result, "error": None,
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"model": model_name, "elapsed": time.monotonic() - t_start,
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"attempts": total_attempts, "channel": ch_name,
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}
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last_err = result
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print(f" [LLM] {ch_name} 尝试{attempt+1}/{retries+1} 失败({elapsed:.1f}s): {result[:120]}", flush=True)
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except Exception as e:
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elapsed = time.monotonic() - t0
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last_err = str(e)
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print(f" [LLM] {ch_name} 尝试{attempt+1}/{retries+1} 异常({elapsed:.1f}s): {last_err[:120]}", flush=True)
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if attempt < retries:
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print(f" [LLM] 等待{backoff}s后重试...", flush=True)
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time.sleep(backoff)
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# 当前通道重试耗尽 → 切下一通道
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if (ch_name, ch_url, ch_headers) != channels[-1]:
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print(f" [LLM] {ch_name} 通道不可用，切换兜底通道...", flush=True)
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return {
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"ok": False, "content": "",
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"error": f"双通道均失败(共{total_attempts}次): {last_err[:200]}",
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"model": model_name, "elapsed": time.monotonic() - t_start,
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"attempts": total_attempts, "channel": None,
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}
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