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三层回退恢复机制(L0写前留档/L1恢复梯子/L2离线回滚)+ guard 父守护
- L0: files 插件写受保护系统路径(/etc 等)前自动留档,AbstractBeforeWrite 到 data/file_baseline - L1: failback 受限 worker 执行恢复梯子 probe→还原DNS/proxy→还原LLM配置+ReloadFromConfig→probe,N轮有界 - L2: tracker changeset 持久化原文 blob,guard 离线 RollbackFromDisk 回滚 agentfs;SystemSnapshot 支撑 - guard 父守护: 心跳 IPC(PING/ACK unix socket, 文件心跳回退)、失败计数、退出码协议(42/43/44)、最后手段 - 发行版路径适配: system.protected_paths/network_paths 可注入,默认面向主流 Linux - Windows 兼容: guard.go/failback.go 加 //go:build linux, guard_windows.go 提供 no-op 桩 - 修复: guard.yaml last_resort 键冲突、changeset Content 不落盘导致离线回滚丢原文 Build 全绿, vet 干净, system/recovery/ipc/tracker 单元测试全过
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67
internal/ipc/ipc_test.go
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67
internal/ipc/ipc_test.go
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package ipc
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import (
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"testing"
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"time"
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)
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func TestPingAck(t *testing.T) {
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dir := t.TempDir()
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ok := true
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srv := NewServer(dir, func() *Status {
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return &Status{PID: 123, Boot: "normal", UptimeSec: 42, LLMOK: &ok, Tools: 5, LastDiag: "diag:network"}
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})
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if err := srv.Start(); err != nil {
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t.Fatalf("Start: %v", err)
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}
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defer srv.Stop()
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cli := NewClient(dir)
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st, err := cli.Ping(2 * time.Second)
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if err != nil {
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t.Fatalf("Ping: %v", err)
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}
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if st == nil {
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t.Fatal("nil status")
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}
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if st.PID != 123 || st.Boot != "normal" || st.Tools != 5 {
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t.Fatalf("status mismatch: %+v", st)
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}
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if st.LLMOK == nil || !*st.LLMOK {
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t.Fatal("LLMOK should be true")
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}
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if st.LastDiag != "diag:network" {
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t.Fatalf("LastDiag = %q", st.LastDiag)
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}
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}
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func TestPingTimeout(t *testing.T) {
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dir := t.TempDir()
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// 未启动 server → 立即超时
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cli := NewClient(dir)
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start := time.Now()
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_, err := cli.Ping(500 * time.Millisecond)
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if err == nil {
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t.Fatal("expected error when no server")
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}
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if time.Since(start) > 3*time.Second {
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t.Fatal("timeout took too long")
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}
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}
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func TestServerNoStatusFunc(t *testing.T) {
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dir := t.TempDir()
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srv := NewServer(dir, nil)
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if err := srv.Start(); err != nil {
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t.Fatalf("Start: %v", err)
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}
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defer srv.Stop()
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cli := NewClient(dir)
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st, err := cli.Ping(2 * time.Second)
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if err != nil {
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t.Fatalf("Ping: %v", err)
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}
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if st != nil {
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t.Fatalf("expected nil status when no status func, got %+v", st)
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}
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}
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