feat(memory): T1 加保守全局速率限流（防每天数百到上千次调用失控）
主人 2026-10-07 裁定：按最优解加全局限流。 - 新增 t1RateGate（滑动窗口、可注入时钟，~70 行）；默认 120 次 / 60 分钟（现网 700-1000 条新记忆/天 ≈ 25-42/小时， 取 120 留约 3-5 倍余量） - 过闸摆在「t1Enabled + 有灰区候选」两个守卫之后、发请求之前 ⇒ 不调模型就不占额度；放行才记账 - 超限语义与既有失败路径同源：跳过 T1、决定仍是 create、零改写， 只多一个 reason=t1_throttled 进留痕 + ReviewStats.T1Throttled 计数 - 配置键 t1PerWindow / t1WindowSec 放 $DATA_DIR/config/memory-tidy.json （零新 env 键，启动期读一次）；坏配置回落默认 + WARN，不启动失败 - 每窗口只记一条 WARN（超限是预期行为，一天几百条会淹掉真故障） - IngestRuleVersion 仍为 d3.2：判定规则集与解析契约没变，变的只是 额度状态，reason 列已可分辨（升版会有 §17.6 记过的幂等键重复行副作用） 自研而非复用 session.NewRateLimiter 的理由（design/12 §N C.5 自己登记过 这条取舍）：既有件 Allow() 内部写死 time.Now()，没有时钟注入缝， 而本切片必须能注入可控时钟；且复用会把 channel 层概念拖进 memory 包。
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package memory
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import (
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"bytes"
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"context"
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"log/slog"
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"strings"
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"sync"
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"testing"
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"time"
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"git.yeij.top/AskaEth/Cyrene_v2/internal/runtime/embedding"
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)
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// 本文件是 **T1 全局限速**（design/23 §15.4，preinsert_t1_limit.go）的测试：
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// 超限即不调模型、额度只被真调用消耗、窗口过后恢复、限流路径零改写、日志收敛
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// （每窗口一条 WARN），以及「≤0 不许被读成无上限」那条归一化红线。
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//
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// 三态落地 / 失败回落 / 开关口径在 preinsert_t1_test.go，调用次数有界与硬门隔离
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// 在 preinsert_t1_bound_test.go（本文件不动它们，只加限流这一层）。
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//
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// 所有用例都**不**靠真实等待：窗口过期由可控时钟推进（下面 t1Clock），与
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// t1JudgeStub「被调用即 panic」是同一思路 —— 把「不该发生的调用」变成立刻现形。
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// t1Clock 是可推进的墙钟：限流的「窗口过后额度恢复」必须由它驱动，真实等待会让
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// 测试变慢且不确定（窗口是墙钟量，不是逻辑量）。
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type t1Clock struct {
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mu sync.Mutex
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at time.Time
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}
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func newT1Clock(at time.Time) *t1Clock { return &t1Clock{at: at} }
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func (c *t1Clock) now() time.Time {
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c.mu.Lock()
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defer c.mu.Unlock()
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return c.at
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}
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func (c *t1Clock) advance(d time.Duration) {
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c.mu.Lock()
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defer c.mu.Unlock()
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c.at = c.at.Add(d)
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}
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// newT1LimiterReviewer 构建「异步审查层 + 已接线 T1 + 可控时钟」的服务：
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// 同步入库闸显式关掉（这批用例只验异步那一层，否则测到的是闸），其余走默认值；
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// 限流额度由 cfg.T1PerWindow / cfg.T1Window 给出（非正即回落代码默认）。
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func newT1LimiterReviewer(
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t *testing.T, store *Store, emb embedding.Embedder, cfg ReviewConfig,
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judge T1Judge, now func() time.Time, log *slog.Logger,
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) *PreInsertReviewer {
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t.Helper()
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cfg.Enabled = true
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if cfg.QueueSize == 0 {
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cfg.QueueSize = 8
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}
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if cfg.ScanLimit == 0 {
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cfg.ScanLimit = 50
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}
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if cfg.Timeout == 0 {
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cfg.Timeout = 5 * time.Second
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}
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if cfg.Threshold == 0 {
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cfg.Threshold = 0.80
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}
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cfg.DisableIngestGate = true
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if log == nil {
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log = testLogger()
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}
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r, err := NewPreInsertReviewer(cfg, ReviewDeps{
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Store: store, Embedder: emb, Judge: judge, Now: now, Log: log,
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})
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if err != nil {
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t.Fatalf("NewPreInsertReviewer: %v", err)
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}
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return r
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}
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// TestT1ThrottledSkipsModelCallAndFallsBackToCreate 是任务书 §5①：额度用尽后
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// **不再发起模型调用**，且结论仍是 `create` + `reason=t1_throttled`（与既有失败
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// 路径同语义：只改 reason、决定恒 create、零改写）。
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//
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// 桩回 `keep` 是刻意的：灰区条目因此每次都留在册，同一条可以被反复审 —— 于是
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// 「第 N 次」这件事只由额度决定，与判定结果无关。
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func TestT1ThrottledSkipsModelCallAndFallsBackToCreate(t *testing.T) {
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t.Parallel()
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ctx := context.Background()
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store := newTestStore(t)
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_, fresh := seedT1GrayPair(t, store)
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judge := &t1JudgeStub{reply: `{"action":"keep","target":0}`}
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r := newT1LimiterReviewer(t, store, t1GrayEmbedder(),
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ReviewConfig{T1PerWindow: 2, T1Window: time.Hour}, judge.judge, nil, nil)
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for i := 1; i <= 2; i++ {
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rev, err := r.Review(ctx, fresh)
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if err != nil {
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t.Fatalf("第 %d 次 Review: %v", i, err)
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}
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if rev.Reason != t1ReasonKeep {
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t.Fatalf("额度内第 %d 次的 reason = %q, want %q", i, rev.Reason, t1ReasonKeep)
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}
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}
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if judge.count() != 2 {
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t.Fatalf("额度内模型调用 = %d 次, want 2", judge.count())
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}
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rev, err := r.Review(ctx, fresh)
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if err != nil {
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t.Fatalf("超限那次 Review: %v", err)
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}
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if judge.count() != 2 {
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t.Fatalf("超限后仍调了模型：共 %d 次, want 仍为 2", judge.count())
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}
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if rev.Decision != IngestCreate {
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t.Fatalf("超限后决定 = %q, want create（限流不是报错，是这一轮先不判）", rev.Decision)
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}
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if rev.Reason != t1ReasonThrottled {
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t.Fatalf("超限后 reason = %q, want %q", rev.Reason, t1ReasonThrottled)
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}
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st := r.Stats()
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if st.T1Called != 2 || st.T1Decided != 2 || st.T1Throttled != 1 {
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t.Fatalf("计数 = %+v, want T1Called=2 T1Decided=2 T1Throttled=1", st)
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}
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if label := reviewStatsLabel(st); !strings.Contains(label, "t1_throttled=1") {
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t.Fatalf("统计串里看不到限流：%q", label)
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}
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}
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// TestT1ThrottleRecoversAfterWindow 是任务书 §5②：额度在窗口过后**恢复**
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// （限流不把窗口往后推）。时钟由注入的 t1Clock 推进，不靠真实等待。
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func TestT1ThrottleRecoversAfterWindow(t *testing.T) {
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t.Parallel()
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ctx := context.Background()
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store := newTestStore(t)
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_, fresh := seedT1GrayPair(t, store)
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clock := newT1Clock(tidyTestTime(t))
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judge := &t1JudgeStub{reply: `{"action":"keep","target":0}`}
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window := 30 * time.Minute
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r := newT1LimiterReviewer(t, store, t1GrayEmbedder(),
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ReviewConfig{T1PerWindow: 1, T1Window: window}, judge.judge, clock.now, nil)
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if rev, err := r.Review(ctx, fresh); err != nil || rev.Reason != t1ReasonKeep {
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t.Fatalf("窗口内首次 = %+v err=%v, want keep", rev, err)
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}
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if rev, err := r.Review(ctx, fresh); err != nil || rev.Reason != t1ReasonThrottled {
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t.Fatalf("窗口内第二次 = %+v err=%v, want %q", rev, err, t1ReasonThrottled)
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}
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// 差一秒钟到期：仍然超限（边界口径与既有滑窗件逐字相同：严格晚于 cutoff 才算在窗内）。
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clock.advance(window - time.Second)
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if rev, err := r.Review(ctx, fresh); err != nil || rev.Reason != t1ReasonThrottled {
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t.Fatalf("窗口未满却恢复了额度：%+v err=%v", rev, err)
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}
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if judge.count() != 1 {
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t.Fatalf("窗口未满时模型调用 = %d 次, want 1", judge.count())
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}
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// 推进过窗口：额度恢复，模型再次被调用。
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clock.advance(2 * time.Second)
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rev, err := r.Review(ctx, fresh)
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if err != nil {
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t.Fatalf("窗口过后 Review: %v", err)
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}
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if judge.count() != 2 {
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t.Fatalf("窗口过后模型调用 = %d 次, want 2（额度必须恢复）", judge.count())
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}
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if rev.Reason != t1ReasonKeep {
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t.Fatalf("窗口过后的 reason = %q, want %q", rev.Reason, t1ReasonKeep)
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}
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if st := r.Stats(); st.T1Throttled != 2 {
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t.Fatalf("超限计数 = %d, want 2", st.T1Throttled)
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}
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}
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// TestT1ThrottledNeverTouchesMemory 是任务书 §5③：限流路径**只改 reason**，
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// 记忆行一个字不改（与 TestReviewFailureNeverTouchesMemory 同一手法）。
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//
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// 守卫手法照 TestT1DisabledMakesZeroModelCalls：把桩换成「被调用即 panic」并回
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// `merge` —— 限流一旦失效，要么当场 panic，要么真把两行改写掉，两种都在断言里现形。
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func TestT1ThrottledNeverTouchesMemory(t *testing.T) {
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t.Parallel()
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ctx := context.Background()
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store := newTestStore(t)
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existing, fresh := seedT1GrayPair(t, store)
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judge := &t1JudgeStub{reply: `{"action":"keep","target":0}`}
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r := newT1LimiterReviewer(t, store, t1GrayEmbedder(),
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ReviewConfig{T1PerWindow: 1, T1Window: time.Hour}, judge.judge, nil, nil)
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// 第一次：额度内，桩回 keep（不改写任何行）。
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if _, err := r.Review(ctx, fresh); err != nil {
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t.Fatalf("额度内 Review: %v", err)
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}
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if judge.count() != 1 {
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t.Fatalf("额度内模型调用 = %d 次, want 1", judge.count())
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}
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// 第二次：额度已用尽。桩换成「被调用即 panic」并回 merge。
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judge.mu.Lock()
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judge.panics = true
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judge.reply = `{"action":"merge","target":1}`
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judge.mu.Unlock()
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rev := t1ReviewGuarded(t, r, fresh)
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if rev.Decision != IngestCreate || rev.Reason != t1ReasonThrottled {
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t.Fatalf("超限那次 = %+v, want create + %q", rev, t1ReasonThrottled)
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}
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if got := readReviewRow(t, store, fresh.ID); got.status != tidyStatusActive ||
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got.mergedInto != "" || got.content != fixtureT1CodeViaChannel {
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t.Fatalf("限流却改写了新行：%+v", got)
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}
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old := readReviewRow(t, store, existing.ID)
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if old.status != tidyStatusActive || old.mergeCount != 1 || old.content != fixtureT1CodeAgreed {
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t.Fatalf("限流却改了既有行：%+v", old)
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}
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if n := countActiveRows(t, store, "persona.a"); n != 2 {
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t.Fatalf("活跃行数 = %d, want 2（限流是「不调」，不是「调失败」）", n)
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}
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}
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// TestT1ThrottleQuotaIsOnlySpentByRealCalls 钉住「额度只被真调用消耗」：
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// 没有灰区候选的审查（本来就不调模型）一次额度都不占 —— 否则整库的普通新建
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// 会把 T1 的额度白白吃光，限流就成了随机停机。
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func TestT1ThrottleQuotaIsOnlySpentByRealCalls(t *testing.T) {
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t.Parallel()
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ctx := context.Background()
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store := newTestStore(t)
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base := tidyTestTime(t)
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_, fresh := seedT1GrayPair(t, store)
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// 一条与灰区对**毫不相似**的条目：它落不到任何候选上 ⇒ 零灰区、零调用。
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plain := seedTidyItem(t, store, habitItem(fixtureHabitVacation, base.Add(2*time.Hour), 0.9))
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judge := &t1JudgeStub{reply: `{"action":"keep","target":0}`}
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r := newT1LimiterReviewer(t, store, t1GrayEmbedder(),
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ReviewConfig{T1PerWindow: 1, T1Window: time.Hour}, judge.judge, nil, nil)
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rev, err := r.Review(ctx, plain)
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if err != nil {
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t.Fatalf("零灰区那次 Review: %v", err)
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}
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if rev.Decision != IngestCreate || judge.count() != 0 {
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t.Fatalf("零灰区那次 = %+v calls=%d，不该调模型", rev, judge.count())
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}
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if st := r.Stats(); st.T1Throttled != 0 {
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t.Fatalf("零灰区那次被记成限流：%+v", st)
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}
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// 额度仍然完好在册：真需要判定的这一条照样调得到模型。
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if rev, err := r.Review(ctx, fresh); err != nil || rev.Reason != t1ReasonKeep {
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t.Fatalf("灰区那条 = %+v err=%v, want keep（额度被普通新建吃掉了）", rev, err)
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}
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if judge.count() != 1 {
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t.Fatalf("模型调用 = %d 次, want 1", judge.count())
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}
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}
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// TestT1ThrottleLogsOneWarnPerWindow 钉住日志口径：超限是**预期内的省钱行为**，
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// 不是故障 ⇒ 每窗口只记一条 WARN，其余记 Debug；且日志里绝不出现记忆正文。
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func TestT1ThrottleLogsOneWarnPerWindow(t *testing.T) {
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t.Parallel()
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ctx := context.Background()
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store := newTestStore(t)
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_, fresh := seedT1GrayPair(t, store)
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var buf bytes.Buffer
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log := slog.New(slog.NewTextHandler(&buf, &slog.HandlerOptions{Level: slog.LevelDebug}))
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judge := &t1JudgeStub{reply: `{"action":"keep","target":0}`}
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limit := ReviewConfig{T1PerWindow: 1, T1Window: time.Hour}
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r := newT1LimiterReviewer(t, store, t1GrayEmbedder(), limit, judge.judge, nil, log)
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// 三次审查、额度 1：第 1 次真调、第 2 次超限（本窗口第一条 WARN）、
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// 第 3 次仍超限（降级成 Debug）—— 日志条数 2、其中 WARN 1。
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for i := 0; i < 3; i++ {
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if _, err := r.Review(ctx, fresh); err != nil {
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t.Fatalf("第 %d 次 Review: %v", i, err)
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}
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}
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logged := buf.String()
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if n := strings.Count(logged, "t1 judge throttled"); n != 2 {
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t.Fatalf("限流日志条数 = %d, want 2（两次超限各一条）：%q", n, logged)
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}
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if n := strings.Count(logged, "level=WARN"); n != 1 {
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t.Fatalf("限流 WARN 条数 = %d, want 1（每窗口一条）：%q", n, logged)
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}
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for _, leaked := range []string{fixtureT1CodeAgreed, fixtureT1CodeViaChannel} {
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if strings.Contains(logged, leaked) {
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t.Fatalf("日志里泄漏了记忆正文 %q：%q", leaked, logged)
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}
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}
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// 窗口排空之后「本窗口已报过」必须复位：新窗口的第一次超限仍然要 WARN。
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clock := newT1Clock(tidyTestTime(t))
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r2 := newT1LimiterReviewer(t, store, t1GrayEmbedder(), limit, judge.judge, clock.now, log)
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for i := 0; i < 2; i++ {
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if _, err := r2.Review(ctx, fresh); err != nil {
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t.Fatalf("新一轮第 %d 次 Review: %v", i, err)
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}
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}
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if n := strings.Count(buf.String(), "level=WARN"); n != 2 {
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t.Fatalf("新窗口的 WARN 条数 = %d, want 2：%q", n, buf.String())
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}
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clock.advance(2 * time.Hour)
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for i := 0; i < 2; i++ {
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if _, err := r2.Review(ctx, fresh); err != nil {
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t.Fatalf("过期轮第 %d 次 Review: %v", i, err)
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}
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}
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if n := strings.Count(buf.String(), "level=WARN"); n != 3 {
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t.Fatalf("跨窗口后的 WARN 条数 = %d, want 3（新窗口要重新报一次）：%q", n, buf.String())
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}
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}
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// TestT1DisabledLimitsNothingAndCallsNothing 是任务书 §5④：`t1Judge: false`
|
||||
// （DisableT1）时**零模型调用**，限流器连碰都不碰 —— 既有那条「被调用即 panic」
|
||||
// 的守卫测试（TestT1DisabledMakesZeroModelCalls）因此不受本切片影响。
|
||||
func TestT1DisabledLimitsNothingAndCallsNothing(t *testing.T) {
|
||||
t.Parallel()
|
||||
store := newTestStore(t)
|
||||
_, fresh := seedT1GrayPair(t, store)
|
||||
|
||||
judge := &t1JudgeStub{panics: true, reply: `{"action":"merge","target":1}`}
|
||||
r := newT1LimiterReviewer(t, store, t1GrayEmbedder(),
|
||||
ReviewConfig{DisableT1: true, T1PerWindow: 1, T1Window: time.Hour}, judge.judge, nil, nil)
|
||||
|
||||
rev := t1ReviewGuarded(t, r, fresh)
|
||||
if judge.count() != 0 {
|
||||
t.Fatalf("T1 关掉后仍调了 %d 次模型", judge.count())
|
||||
}
|
||||
if rev.Decision != IngestCreate || rev.Reason != "no_contained_match" {
|
||||
t.Fatalf("T1 关掉后 = %+v, want create + T0 原始原因码（限流不该改这里的语义）", rev)
|
||||
}
|
||||
if st := r.Stats(); st.T1Called != 0 || st.T1Decided != 0 || st.T1Throttled != 0 {
|
||||
t.Fatalf("T1 关掉后计数 = %+v, want 全零", st)
|
||||
}
|
||||
}
|
||||
|
||||
// TestT1RateGateIsConcurrencySafe 钉住闸的**并发安全**：审查可能来自后台工作
|
||||
// 协程，也可能来自手动 Review。N 个协程同时抢 K 个额度 ⇒ **恰好**放行 K 个 ——
|
||||
// 多放行就是超发模型调用（额度失效），少放行就是并发把额度吃掉（额度虚耗）。
|
||||
func TestT1RateGateIsConcurrencySafe(t *testing.T) {
|
||||
t.Parallel()
|
||||
const (
|
||||
limit = 7
|
||||
workers = 32
|
||||
)
|
||||
gate := newT1RateGate(limit, time.Hour, newT1Clock(tidyTestTime(t)).now)
|
||||
|
||||
var (
|
||||
wg sync.WaitGroup
|
||||
mu sync.Mutex
|
||||
allowed int
|
||||
)
|
||||
for i := 0; i < workers; i++ {
|
||||
wg.Add(1)
|
||||
go func() {
|
||||
defer wg.Done()
|
||||
if ok, _ := gate.allow(); ok {
|
||||
mu.Lock()
|
||||
allowed++
|
||||
mu.Unlock()
|
||||
}
|
||||
}()
|
||||
}
|
||||
wg.Wait()
|
||||
if allowed != limit {
|
||||
t.Fatalf("并发放行 = %d, want 恰为 %d", allowed, limit)
|
||||
}
|
||||
}
|
||||
|
||||
// TestNormalizeReviewConfigFillsT1ThrottleDefaults 是 design/12 §N C.5 G3 那条
|
||||
// 红线的探针：额度**非正**必须被 normalize 回落成默认额 —— 绝不许带着 ≤0 进闸，
|
||||
// 否则闸的「恒放行」会把「回落默认」静默变成「无上限」（构造处已保证闸在归一之后建）。
|
||||
func TestNormalizeReviewConfigFillsT1ThrottleDefaults(t *testing.T) {
|
||||
t.Parallel()
|
||||
for _, cfg := range []ReviewConfig{
|
||||
{},
|
||||
{T1PerWindow: -1, T1Window: -time.Second},
|
||||
{T1PerWindow: 7},
|
||||
{T1Window: 3 * time.Minute},
|
||||
} {
|
||||
got := normalizeReviewConfig(cfg)
|
||||
if got.T1PerWindow <= 0 {
|
||||
t.Fatalf("normalize(%+v).T1PerWindow = %d，非正值直达闸会被读成「无上限」", cfg, got.T1PerWindow)
|
||||
}
|
||||
if got.T1Window <= 0 {
|
||||
t.Fatalf("normalize(%+v).T1Window = %s，同上", cfg, got.T1Window)
|
||||
}
|
||||
}
|
||||
if got := normalizeReviewConfig(ReviewConfig{}); got.T1PerWindow != defaultT1PerWindow ||
|
||||
got.T1Window != defaultT1Window {
|
||||
t.Fatalf("零值配置 = %d/%s, want %d/%s",
|
||||
got.T1PerWindow, got.T1Window, defaultT1PerWindow, defaultT1Window)
|
||||
}
|
||||
if got := normalizeReviewConfig(ReviewConfig{T1PerWindow: 7, T1Window: 3 * time.Minute}); got.T1PerWindow != 7 ||
|
||||
got.T1Window != 3*time.Minute {
|
||||
t.Fatalf("显式额度被改写：%d/%s", got.T1PerWindow, got.T1Window)
|
||||
}
|
||||
|
||||
// 构造后的生效值也必须已是默认额（而不是留 0 等运行时兜）。
|
||||
store := newTestStore(t)
|
||||
r := newT1LimiterReviewer(t, store, t1GrayEmbedder(), ReviewConfig{}, nil, nil, nil)
|
||||
if r.cfg.T1PerWindow != defaultT1PerWindow || r.cfg.T1Window != defaultT1Window {
|
||||
t.Fatalf("NewPreInsertReviewer 的生效额度 = %d/%s, want 默认 %d/%s",
|
||||
r.cfg.T1PerWindow, r.cfg.T1Window, defaultT1PerWindow, defaultT1Window)
|
||||
}
|
||||
if allowed, first := r.t1Gate.allow(); !allowed || first {
|
||||
t.Fatal("默认额度下第一次就该放行")
|
||||
}
|
||||
}
|
||||
Reference in new issue
Block a user