refactor(observability): Phase2.2 成本归因 trace_id列+token日志写入+LLM/MCP/媒体子span [v2026.07.19.3]
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# 版本号格式: vYYYY.MM.DD.N (年.月.日.当日递增序号,从 1 开始)
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# 环境标签: prod = 正式版 | test = 测试版
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VERSION=v2026.07.19.2
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VERSION=v2026.07.19.3
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ENV=prod
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DATE=2026-07-19
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BASE_IMAGE=qihu-aiflow:with-deps
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BACKUP_IMAGE=qihu-aiflow:backup-20260719-002
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BACKUP_IMAGE=qihu-aiflow:backup-20260719-003
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## 本版本变更 (v2026.07.19.3 / prod)
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- Phase2.2 成本归因:token_usage_logs 新增 trace_id 列(迁移 020_add_trace_id_token_usage_logs.sql,幂等 ALTER),打通「链路 -> 成本」归集
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- _write_media_token_log(媒体图片/视频)注入 get_trace_id(),每条媒体 TokenUsageLog 现可回溯到请求链路
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- LogService.log_token_usage 增加 trace_id 参数(为后续文本 LLM token 记账接通成本归因预留)
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- chat_service / chat_media 在 LLM 补全、MCP 工具拉取/调用、技能执行、AGNES 媒体生成处加 span 子链路(async with span),一次请求可下钻耗时分布
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- 注意:_generate_media_task 为后台 fire-and-forget,其 span 会因处于 asyncio.create_task 表达式内而非法,已移除;真实媒体耗时由 chat_media 内 media.agnes_call span 覆盖
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- 纯增量埋点,不改接口返回结构与业务行为;pytest 9 passed + vitest 4 passed 门禁绿
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- 部署前已按 SOP 备份 rollback 点 qihu-aiflow:backup-20260719-003
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## 本版本变更 (v2026.07.19.1 / prod)
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- Phase1 chat.py 巨石拆分收官:10070 行单体拆分为 chat_{utils,media,agents,skill,mcp,context,knowledge,service}.py 共 8 个子模块,controller 层 chat.py 降至 1352 行(<3000 目标达成)
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@@ -57,7 +57,7 @@ class LogService:
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app_id: str = None, app_name: str = None,
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conversation_id: str = None, prompt_tokens: int = 0,
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completion_tokens: int = 0, total_tokens: int = 0,
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cost: float = 0):
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cost: float = 0, trace_id: str = None):
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"""记录Token消耗日志"""
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db = SessionLocal()
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try:
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@@ -73,6 +73,7 @@ class LogService:
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completion_tokens=completion_tokens,
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total_tokens=total_tokens,
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cost=cost,
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trace_id=trace_id,
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)
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db.add(log)
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db.commit()
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@@ -537,6 +537,7 @@ class TokenUsageLog(Base):
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app_id = Column(String(36), default=None)
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app_name = Column(String(200), default=None)
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conversation_id = Column(String(36), default=None)
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trace_id = Column(String(64), default=None)
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prompt_tokens = Column(Integer, default=0)
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completion_tokens = Column(Integer, default=0)
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total_tokens = Column(Integer, default=0)
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@@ -0,0 +1,7 @@
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-- Phase 2.2: add trace_id to token_usage_logs for cost attribution (idempotent)
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SET @db = DATABASE();
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SET @col_exists = (SELECT COUNT(*) FROM information_schema.columns WHERE table_schema = @db AND table_name = 'token_usage_logs' AND column_name = 'trace_id');
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SET @sql = IF(@col_exists = 0, 'ALTER TABLE token_usage_logs ADD COLUMN trace_id VARCHAR(64) NULL DEFAULT NULL', 'SELECT 1');
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PREPARE stmt FROM @sql;
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EXECUTE stmt;
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DEALLOCATE PREPARE stmt;
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