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@ericality/dsh-cost-tree

v0.1.0

Published

Read-only session-cost tree aggregation for DSH (zero-dep): follows parentSession lineage in log headers and sums token totals per subagent subtree.

Readme

@ericality/dsh-cost-tree

Read-only session-cost tree aggregation for DSH — 会话树用量聚合纯库(只读不写、零依赖):血缘索引 + 子树闭包 + projcache 四类 token totals 按会话树求和。

安装

npm i @ericality/dsh-cost-tree

需 dsh (DeepSeek Harness) 宿主环境;作为宿主插件的读时聚合库加载(纯库,无 apply/inject/钩子/RPC)。

功能

  • readFirstHeaderLine(file) — 只读会话日志 JSONL 首帧 header(64KB 有界前缀读,截断倍增重试 ≤4MB;缺失/坏文件 → null,不 throw)。
  • readTreeIndex(opts) — 扫 sessionsRoot 下各 workspace 目录,按首帧 header 建 parentSession 血缘索引(TTL 15s 内存缓存,force 可重建)。
  • subtreeIds(sid, opts) — 子树 id 闭包(含自身、防环;默认只跟随 origin === "subagent" 的委托边,edgeMode: "all" 可跟随任意边)。
  • subtreeTotalsFromProjcache(sid, opts) — 子树四类用量聚合:自身 + 全部后代,返回 { totals, ids, children, ownTotals, missing };数据源不可读 → null(消费方降级)。
  • sessionMeta(sid, opts) / childLabel(row, sid) / projcacheTotalsOf(row) / readProjcacheSessions(file) — 元信息与 projcache 读取辅助。
  • 数据源默认路径(宿主数据目录)可用环境变量覆盖:DSH_COST_TREE_SESSIONS_ROOTDSH_COST_TREE_PROJCACHE_FILE

依赖

peer:无(仅 node:fs / node:zlib)。

许可

MIT