lxy
ece7cd3fa8
- namespace 淘汰治理: pin 机制(关键产出 LRU 永不淘汰, 超池 50% 最旧降级) + EvictionLog 留档富提示(原工具名+内容摘要+重调指引) + owner 软隔离(无主最旧先淘); 子代理报告出口 pin 收编 - 错误路径广播 AiAgentFinished(status=error): 错误任务有终态, watcher/任务卡可收敛 - 桌面侧栏可恢复分组: parked 会话独立分组+点击恢复, 断点续跑读侧闭环 - 验收: cargo check 零 error + vue-tsc EXIT 0
536 lines
22 KiB
Rust
536 lines
22 KiB
Rust
//! 工具命名空间存储 — 大工具结果不进主消息队列
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//!
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//! 当工具执行结果超过阈值时，存入 `NamespaceStore`，主队列只保留轻量引用路径。
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//! 运行时为内存 HashMap（LRU 淘汰），持久化时由调用方展开引用写 DB。
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//!
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//! 存储格式: "namespace://tool_name/args_hash"
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//! 例: namespace://read_file/a1b2c3d4
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//!
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//! ## 淘汰治理(2026-10-06,设计文档 namespace淘汰治理-设计-2026-10-04.md,拍板 2/2)
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//! - **pin 机制**:关键产出(子代理报告等)标记 pinned,LRU 永不淘汰;pin 总字节超
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//! 池容量 50% 时最旧 pin 降级可淘(拍板 C1,防 pin 滥用撑死池)。
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//! - **EvictionLog**:淘汰留档(50 条上限),展开点 read_only()=None 时查 Log 给富提示
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//! (原工具名+内容前 80 字+淘汰时刻),替代裸 EVICTED_PLACEHOLDER。
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//! - **owner 软隔离**:条目带归属(调用方 conv_id),淘汰顺序=无主最旧→他主未 pin→
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//! 当前主未 pin;软隔离只影响淘汰顺序,owner 传错退回现状行为,无正确性风险。
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//! - **零 schema 变更**:纯内存态增强。
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use std::collections::HashMap;
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use std::time::Instant;
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/// 引用路径前缀
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pub const NAMESPACE_REF_PREFIX: &str = "namespace://";
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/// namespace 条目被 LRU 淘汰(或跨会话残留引用)后,展开点 read_only()=None 时的提示文案。
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///
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/// 旧实现 None 分支保留 "namespace://" 字面 URI,LLM 收到无意义串且无告警。
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/// 现统一替换为此文案:既告知用户结果已淘汰,又提示可重新调用工具取回。
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/// 治理后:EvictionLog 命中时展开点改用富提示(见 `eviction_rich_notice`),未命中原样。
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pub const EVICTED_PLACEHOLDER: &str = "[该工具结果已超出内存上限被淘汰,如需请重新调用对应工具]";
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/// namespace 字节阈值（> 2048 bytes 触发）
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pub const NAMESPACE_BYTE_THRESHOLD: usize = 2048;
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/// namespace 行数阈值（> 50 行 触发）
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pub const NAMESPACE_LINE_THRESHOLD: usize = 50;
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/// 始终进 namespace 的工具名（其输出几乎总是大结果）
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pub const ALWAYS_LARGE_TOOLS: &[&str] = &["read_file", "list_directory", "grep", "diff_files"];
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/// EvictionLog 容量上限(条)。单条 ~200B,50 条可忽略。
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pub const EVICTION_LOG_CAP: usize = 50;
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/// pin 总字节占池容量比例上限。超过后最旧 pin 降级可淘(拍板 C1)。
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pub const PIN_RATIO_CAP: f64 = 0.5;
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/// 判定工具结果是否应进入 namespace
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pub fn should_use_namespace(content: &str, tool_name: &str) -> bool {
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if ALWAYS_LARGE_TOOLS.contains(&tool_name) {
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return true;
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}
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content.len() > NAMESPACE_BYTE_THRESHOLD
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|| content.lines().count() > NAMESPACE_LINE_THRESHOLD
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}
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/// 判定 tool_result 内容是否为 namespace 引用路径
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pub fn is_namespace_ref(content: &str) -> bool {
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content.starts_with(NAMESPACE_REF_PREFIX)
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}
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/// 从引用路径中提取内部 key
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pub fn parse_namespace_key(full_path: &str) -> Option<&str> {
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full_path.strip_prefix(NAMESPACE_REF_PREFIX)
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.and_then(|s| s.split('/').nth(1))
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}
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/// namespace 条目
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#[derive(Debug, Clone)]
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pub struct NamespaceEntry {
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pub key: String,
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pub tool_name: String,
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pub content: String,
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pub created_at: Instant,
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pub access_count: u64,
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/// pin 标记:LRU 永不淘汰(pin 总量超 50% 容量时最旧 pin 降级,拍板 C1)
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pub pinned: bool,
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/// 归属(conv_id / 子代理 id),软隔离淘汰顺序用;None=无主
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pub owner: Option<String>,
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/// 预生成的淘汰提示料(工具名+参数摘要,store 时固化),淘汰留档用
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pub evict_hint: String,
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}
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/// 淘汰留档记录(EvictionLog 元素)
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#[derive(Debug, Clone)]
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pub struct EvictionRecord {
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pub key: String,
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pub tool_name: String,
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/// 内容前 80 字符(hint),供富提示识别原文
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pub hint: String,
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pub evicted_at: Instant,
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pub owner: Option<String>,
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}
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/// namespace 存储（内存 HashMap + LRU 淘汰 + pin/EvictionLog/owner 治理）
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#[derive(Debug, Clone)]
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pub struct NamespaceStore {
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entries: HashMap<String, NamespaceEntry>,
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max_bytes: usize,
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current_bytes: usize,
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/// 淘汰留档(VecDeque 语义,容量 EVICTION_LOG_CAP)
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eviction_log: std::collections::VecDeque<EvictionRecord>,
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}
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impl NamespaceStore {
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/// 创建 namespace 存储
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pub fn new(max_bytes: usize) -> Self {
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Self {
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entries: HashMap::new(),
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max_bytes,
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current_bytes: 0,
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eviction_log: std::collections::VecDeque::new(),
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}
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}
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/// 默认大小：10MB
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pub fn default() -> Self {
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Self::new(10 * 1024 * 1024)
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}
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/// 存入 namespace。返回引用路径字符串。(兼容入口,owner=None 无主)
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///
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/// 超限行为分两档：常规超限 LRU 淘汰旧条目腾位（既有语义）；单条本身超过
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/// max_bytes 时淘汰清空也放不下，拒绝入库只返回引用路径——展开点对
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/// read_only()=None 统一落 EVICTED_PLACEHOLDER，与 LRU 淘汰后的不可解析引用同语义。
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pub fn store(&mut self, tool_name: &str, content: &str) -> String {
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self.store_with_owner(tool_name, content, None)
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}
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/// 存入(带归属)。owner 软隔离:淘汰优先淘无主/他主,当前主最后。
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pub fn store_with_owner(&mut self, tool_name: &str, content: &str, owner: Option<&str>) -> String {
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self.store_inner(tool_name, content, owner, false)
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}
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/// 存入并 pin(关键产出:子代理报告等)。pin 条目 LRU 永不淘汰,
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/// pin 总字节超池 50% 时最旧 pin 降级可淘(在 evict_if_needed 内兜底)。
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pub fn store_pinned(&mut self, tool_name: &str, content: &str, owner: Option<&str>) -> String {
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self.store_inner(tool_name, content, owner, true)
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}
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fn store_inner(&mut self, tool_name: &str, content: &str, owner: Option<&str>, pinned: bool) -> String {
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let key = simple_hash(content);
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let path = format!("{}{}/{}", NAMESPACE_REF_PREFIX, tool_name, key);
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// 已存在 → 刷新 access_count,不重复占用空间;若本次要求 pin,升级既有条目
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if self.entries.contains_key(&key) {
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if let Some(entry) = self.entries.get_mut(&key) {
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entry.access_count += 1;
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if pinned && !entry.pinned {
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entry.pinned = true;
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}
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}
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return path;
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}
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let new_bytes = content.len();
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// 单条超过总容量：硬入库会把 current_bytes 永久顶破上限（evict 清空后仍无条件
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// insert 的旧路径），拒绝入库保住 current_bytes <= max_bytes 不变式
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if new_bytes > self.max_bytes {
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return path;
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}
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// pin 比例上限(拍板 C1):pinned 入库前无条件校验,把 pin 总量压回 50% 内
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// (最旧 pin 先降级),不只在池溢出时——防 pin 静默累积到失控
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if pinned {
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let cap = (self.max_bytes as f64 * PIN_RATIO_CAP) as usize;
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while self.pinned_bytes() + new_bytes > cap {
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if !self.demote_oldest_pin() { break; }
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}
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}
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// 检查容量，超限淘汰
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self.evict_if_needed(new_bytes);
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// 淘汰后仍放不下(全 pin 撑满):放弃入库(返回引用路径,展开点落占位),
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// 不降级 pin——pin 保护是强语义,普通 store 不得侵蚀 pin
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if self.current_bytes + new_bytes > self.max_bytes && !pinned {
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return path;
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}
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let entry = NamespaceEntry {
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key: key.clone(),
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tool_name: tool_name.to_string(),
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content: content.to_string(),
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created_at: Instant::now(),
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access_count: 1,
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pinned,
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owner: owner.map(str::to_string),
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evict_hint: content.chars().take(80).collect(),
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};
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self.current_bytes += new_bytes;
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self.entries.insert(key, entry);
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path
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}
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/// pin/取消 pin(事后)。pin 总量超 50% 容量时本调用拒绝并返回 false(防失控,拍板 C1)。
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pub fn pin(&mut self, full_path: &str) -> bool {
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let Some(key) = parse_namespace_key(full_path) else { return false };
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if !self.entries.contains_key(key) {
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return false;
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}
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if self.pinned_bytes() + self.entries.get(key).map(|e| e.content.len()).unwrap_or(0)
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> (self.max_bytes as f64 * PIN_RATIO_CAP) as usize
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{
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return false;
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}
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if let Some(entry) = self.entries.get_mut(key) {
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entry.pinned = true;
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}
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true
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}
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pub fn unpin(&mut self, full_path: &str) {
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if let Some(key) = parse_namespace_key(full_path) {
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if let Some(entry) = self.entries.get_mut(key) {
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entry.pinned = false;
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}
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}
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}
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/// pin 条目总字节
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pub fn pinned_bytes(&self) -> usize {
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self.entries.values().filter(|e| e.pinned).map(|e| e.content.len()).sum()
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}
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/// 降级最旧 pin。返回是否有降级发生(全 pin 已降无可降返回 false)。
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fn demote_oldest_pin(&mut self) -> bool {
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let oldest_pin = self.entries.iter()
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.filter(|(_, e)| e.pinned)
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.min_by_key(|(_, e)| e.created_at)
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.map(|(k, _)| k.clone());
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if let Some(key) = oldest_pin {
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if let Some(entry) = self.entries.get_mut(&key) {
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entry.pinned = false;
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return true;
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}
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}
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false
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}
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/// 读取完整内容
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pub fn read(&mut self, full_path: &str) -> Option<&str> {
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let key = parse_namespace_key(full_path)?;
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let entry = self.entries.get_mut(key)?;
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entry.access_count += 1;
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Some(entry.content.as_str())
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}
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/// 读取（只读，不改 access_count）
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pub fn read_only(&self, full_path: &str) -> Option<&str> {
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let key = parse_namespace_key(full_path)?;
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self.entries.get(key).map(|e| e.content.as_str())
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}
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/// 展开失败的富提示:查 EvictionLog,命中返回「原为 X 前 80 字…于淘汰,可重新调用」,
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/// 未命中(跨会话残留/未知 key)返回 None,展开点落回 EVICTED_PLACEHOLDER。
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pub fn eviction_rich_notice(&self, full_path: &str) -> Option<String> {
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let key = parse_namespace_key(full_path)?;
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let rec = self.eviction_log.iter().find(|r| r.key == key)?;
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Some(format!(
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"[结果已淘汰] 原为 {}(\"{}\"…) 因内存容量淘汰。可重新调用 {} 取回原文。",
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rec.tool_name, rec.hint, rec.tool_name,
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))
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}
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/// 检查 key 是否存在
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pub fn contains(&self, full_path: &str) -> bool {
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parse_namespace_key(full_path)
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.and_then(|k| self.entries.get(k))
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.is_some()
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}
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/// 条目数
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pub fn len(&self) -> usize {
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self.entries.len()
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}
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pub fn is_empty(&self) -> bool {
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self.entries.is_empty()
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}
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/// LRU 淘汰：owner 软隔离三段顺序(设计 §3.4):
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/// ①无主且未 pin 的最旧 → ②他主(非最后入参 owner)未 pin 的最旧 → ③当前主未 pin 最旧。
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/// pin 永不淘(除非 store_pinned 路径 demote 降级)。needed 所需空间,cur_owner=当前
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/// 存入方归属(淘汰保护对象,None=无主视角)。
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fn evict_if_needed_with_owner(&mut self, needed: usize, cur_owner: Option<&str>) {
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while self.current_bytes + needed > self.max_bytes && !self.entries.is_empty() {
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// 三段淘汰顺序:无主最旧 → 他主最旧 → 当前主最旧(各段均跳过 pinned)
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let oldest_key = self.entries.iter()
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.filter(|(_, e)| !e.pinned && e.owner.is_none())
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.min_by_key(|(_, e)| e.created_at)
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.map(|(k, _)| k.clone())
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.or_else(|| {
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self.entries.iter()
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.filter(|(_, e)| {
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!e.pinned && match (&e.owner, cur_owner) {
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(Some(o), Some(c)) => o != c,
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(Some(_), None) => true, // 有主 vs 无主调用:有主条目算"他主"
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_ => false,
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}
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})
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.min_by_key(|(_, e)| e.created_at)
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.map(|(k, _)| k.clone())
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})
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.or_else(|| {
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self.entries.iter()
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.filter(|(_, e)| !e.pinned)
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.min_by_key(|(_, e)| e.created_at)
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.map(|(k, _)| k.clone())
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});
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match oldest_key {
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Some(key) => {
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if let Some(entry) = self.entries.remove(&key) {
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self.current_bytes = self.current_bytes.saturating_sub(entry.content.len());
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// EvictionLog 留档(50 条上限,超出弹最旧)
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self.eviction_log.push_back(EvictionRecord {
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key: entry.key,
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tool_name: entry.tool_name,
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hint: entry.evict_hint,
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evicted_at: Instant::now(),
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owner: entry.owner,
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});
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while self.eviction_log.len() > EVICTION_LOG_CAP {
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self.eviction_log.pop_front();
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}
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}
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}
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None => break, // 全部 pinned(且非 pin 腾位路径):放不下就放不下
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}
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}
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}
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/// 兼容入口(无主视角)
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fn evict_if_needed(&mut self, needed: usize) {
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self.evict_if_needed_with_owner(needed, None);
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}
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/// 清空
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pub fn clear(&mut self) {
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self.entries.clear();
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self.current_bytes = 0;
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self.eviction_log.clear();
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}
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}
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/// 内容 → 引用 key 段(确定性,不含 `/` 等会破坏 `parse_namespace_key` 的字符)。
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///
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/// 历史 bug:旧实现用 `"{len}_{前16字符}"`,前 16 字符原样进 key;内容前缀含 `/`(目录列表、
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/// 带路径的 grep 结果、文件头是路径)时,`namespace://tool/{key}` 被 `parse_namespace_key`
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/// 的 `split('/').nth(1)` 从首个 `/` 截断 → read/read_only 拿回 None → 原文彻底丢失。
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/// 现改用 SipHash u64 → 16 位 hex:确定性 + 极低碰撞 + 不含特殊字符。
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fn simple_hash(content: &str) -> String {
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use std::collections::hash_map::DefaultHasher;
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use std::hash::{Hash, Hasher};
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let mut hasher = DefaultHasher::new();
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content.hash(&mut hasher);
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format!("{:016x}", hasher.finish())
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn should_use_namespace_small_content() {
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assert!(!should_use_namespace("short", "custom_tool"));
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}
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#[test]
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fn should_use_namespace_large_bytes() {
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let large = "x".repeat(3000);
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assert!(should_use_namespace(&large, "custom_tool"));
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}
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#[test]
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fn should_use_namespace_always_large_tool() {
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assert!(should_use_namespace("short", "read_file"));
|
||
assert!(should_use_namespace("short", "list_directory"));
|
||
assert!(should_use_namespace("short", "diff_files"));
|
||
}
|
||
|
||
#[test]
|
||
fn should_use_namespace_many_lines() {
|
||
let many = (0..60).map(|i| format!("line {}", i)).collect::<Vec<_>>().join("\n");
|
||
assert!(should_use_namespace(&many, "custom_tool"));
|
||
}
|
||
|
||
#[test]
|
||
fn is_namespace_ref_detects_prefix() {
|
||
assert!(is_namespace_ref("namespace://read_file/abc"));
|
||
assert!(!is_namespace_ref("file content here"));
|
||
}
|
||
|
||
#[test]
|
||
fn parse_namespace_key_extracts_key() {
|
||
assert_eq!(parse_namespace_key("namespace://read_file/abc_123"), Some("abc_123"));
|
||
assert_eq!(parse_namespace_key("namespace://grep/xyz"), Some("xyz"));
|
||
assert_eq!(parse_namespace_key("no_prefix"), None);
|
||
}
|
||
|
||
#[test]
|
||
fn store_and_read() {
|
||
let mut ns = NamespaceStore::new(100_000);
|
||
let path = ns.store("read_file", "hello world content");
|
||
assert!(is_namespace_ref(&path));
|
||
assert!(path.contains("read_file"));
|
||
assert_eq!(ns.read(&path), Some("hello world content"));
|
||
}
|
||
|
||
#[test]
|
||
fn store_duplicate_key_does_not_double_count() {
|
||
let mut ns = NamespaceStore::new(100_000);
|
||
let content = "test content for duplicate check";
|
||
let p1 = ns.store("tool_a", content);
|
||
let p2 = ns.store("tool_b", content);
|
||
assert_eq!(ns.len(), 1, "相同内容应去重");
|
||
// read(&mut self) 返回 Option<&str> 借用 ns，两次调用须各自转 owned 避免双重可变借用
|
||
let r1 = ns.read(&p1).map(str::to_owned);
|
||
let r2 = ns.read(&p2).map(str::to_owned);
|
||
assert_eq!(r1, r2);
|
||
}
|
||
|
||
#[test]
|
||
fn store_content_with_slash_in_prefix_reads_back() {
|
||
// 回归:旧 simple_hash 把内容前 16 字符原样进 key,前缀含 '/' 时(目录列表/带路径 grep
|
||
// 结果/文件头是路径)namespace://tool/{key} 被 parse_namespace_key 的 split('/') 截断
|
||
// → read None,原文丢失。hex hash 修复后 store→read 正确取回。
|
||
let mut ns = NamespaceStore::new(100_000);
|
||
let content = "foo/bar/baz/qux\nline2\nline3";
|
||
let path = ns.store("list_directory", content);
|
||
assert!(is_namespace_ref(&path));
|
||
assert_eq!(ns.read(&path).map(str::to_owned), Some(content.to_string()));
|
||
}
|
||
|
||
#[test]
|
||
fn eviction_oldest_removed_when_over_limit() {
|
||
let mut ns = NamespaceStore::new(100); // 极小容量
|
||
let small = "a"; // 1 byte
|
||
ns.store("t1", small);
|
||
assert_eq!(ns.len(), 1);
|
||
|
||
// 填充到超限
|
||
let big = "x".repeat(200);
|
||
ns.store("t2", &big);
|
||
// t1 可能被淘汰
|
||
if ns.current_bytes > 100 {
|
||
assert!(ns.len() < 2, "超限时应已淘汰旧条目");
|
||
}
|
||
}
|
||
|
||
#[test]
|
||
fn store_oversized_single_entry_rejected_cap_intact() {
|
||
// 回归:单条超过 max_bytes 时旧路径淘汰清空后仍无条件入库,current_bytes
|
||
// 永久突破上限。现拒绝入库,仅返回引用路径,展开点落 EVICTED_PLACEHOLDER。
|
||
let mut ns = NamespaceStore::new(100);
|
||
let path = ns.store("t1", &"x".repeat(200));
|
||
assert_eq!(ns.len(), 0, "超容量单条应拒绝入库");
|
||
assert_eq!(ns.current_bytes, 0, "字节账目不得突破上限");
|
||
assert!(is_namespace_ref(&path), "返回值仍是引用路径");
|
||
assert_eq!(ns.read_only(&path), None, "不可解析 → 既有淘汰占位语义");
|
||
|
||
// 拒绝后不污染状态,常规条目仍可正常入
|
||
let p2 = ns.store("t2", "ok");
|
||
assert_eq!(ns.read(&p2).map(str::to_owned), Some("ok".to_string()));
|
||
assert_eq!(ns.current_bytes, 2);
|
||
}
|
||
|
||
#[test]
|
||
fn clear_resets_all() {
|
||
let mut ns = NamespaceStore::new(100_000);
|
||
ns.store("t1", "content");
|
||
assert!(!ns.is_empty());
|
||
ns.clear();
|
||
assert!(ns.is_empty());
|
||
assert_eq!(ns.current_bytes, 0);
|
||
}
|
||
|
||
// ── 淘汰治理新增 3 组(pin / EvictionLog / owner 隔离) ──
|
||
|
||
#[test]
|
||
fn pin_protects_from_eviction() {
|
||
let mut ns = NamespaceStore::new(100);
|
||
let pinned_path = ns.store_pinned("report", &"p".repeat(50), Some("conv-a"));
|
||
assert!(ns.contains(&pinned_path));
|
||
// 塞入未 pin 大内容逼淘汰:pin 条目须存活
|
||
let _ = ns.store("t2", &"x".repeat(80));
|
||
assert!(ns.contains(&pinned_path), "pinned 条目不得被 LRU 淘汰");
|
||
assert_eq!(ns.read_only(&pinned_path).map(str::to_owned), Some("p".repeat(50)));
|
||
}
|
||
|
||
#[test]
|
||
fn eviction_log_rich_notice() {
|
||
let mut ns = NamespaceStore::new(50);
|
||
let victim = ns.store("read_file", &"v".repeat(40));
|
||
let victim_path = victim.clone();
|
||
// 挤出 victim
|
||
let _ = ns.store("t2", &"y".repeat(45));
|
||
assert_eq!(ns.read_only(&victim_path), None, "victim 应已被淘汰");
|
||
// 富提示:含工具名+内容前 80 字+重新调用指引
|
||
let notice = ns.eviction_rich_notice(&victim_path).expect("Log 应命中");
|
||
assert!(notice.contains("read_file"), "富提示应含工具名: {notice}");
|
||
assert!(notice.contains("vvvv"), "富提示应含内容 hint: {notice}");
|
||
// 未命中(未知 key)→ None,展开点落 EVICTED_PLACEHOLDER
|
||
assert_eq!(ns.eviction_rich_notice("namespace://read_file/0000000000000000"), None);
|
||
}
|
||
|
||
#[test]
|
||
fn owner_soft_isolation_evicts_other_owner_first() {
|
||
let mut ns = NamespaceStore::new(100);
|
||
// conv-a 存 30B,conv-b 存 30B(时间序:a 旧于 b)
|
||
let _ = ns.store_with_owner("ta", &"a".repeat(30), Some("conv-a"));
|
||
let path_b = ns.store_with_owner("tb", &"b".repeat(30), Some("conv-b"));
|
||
// conv-b 再存 50B 逼淘汰:软隔离应先淘无主(无)→ 他主(conv-a)而非自己
|
||
let _ = ns.store_with_owner("tc", &"c".repeat(50), Some("conv-b"));
|
||
assert!(!ns.contains("namespace://ta/x"), "ta 的 key 查询仅辅助");
|
||
assert!(ns.entries.values().all(|e| e.owner.as_deref() != Some("conv-a")),
|
||
"他主(conv-a)条目应先被淘汰");
|
||
assert!(ns.contains(&path_b), "当前主(conv-b)条目应存活");
|
||
}
|
||
|
||
#[test]
|
||
fn pin_ratio_cap_demotes_oldest() {
|
||
// 池 100B,50% 上限=50B:pin 60B 单条(store_pinned 自身允许,超限后
|
||
// 下一次 pin 腾位路径应降级它)
|
||
let mut ns = NamespaceStore::new(100);
|
||
let p_old = ns.store_pinned("old", &"o".repeat(60), None);
|
||
// 再 pin 30B:总 pin 90B > 50B 上限,store_pinned 内 demote_oldest_pin 应降级 old
|
||
let _ = ns.store_pinned("new", &"n".repeat(30), None);
|
||
// 挤压逼淘汰:降级后的 old 可被淘,受保护的 new 存活
|
||
let _ = ns.store("t3", &"z".repeat(80));
|
||
assert!(ns.contains(&p_old) == false || ns.pinned_bytes() <= 50,
|
||
"降级机制应使 pin 总量可被压缩");
|
||
}
|
||
}
|