Files
HomeAgent/internal/tracker/disk_test.go
root bc9ef15eb0 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
2026-08-05 16:00:08 +08:00

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package tracker
import (
"os"
"path/filepath"
"testing"
)
// 构造一条写入磁盘的 changeset模拟 worker 运行期间的变更),随后用
// RollbackFromDisk 离线还原。
func TestRollbackFromDisk(t *testing.T) {
dataDir := t.TempDir()
workDir := t.TempDir()
trk := NewTracker(dataDir, workDir)
if err := trk.Init(); err != nil {
t.Fatalf("Init: %v", err)
}
upper := trk.upperDir
os.MkdirAll(upper, 0755)
// 1. 先创建一个文件(对应"新建"
newFile := filepath.Join(upper, "new.txt")
os.WriteFile(newFile, []byte("brand new"), 0644)
// 2. 修改一个文件(对应"修改",带原文)
modFile := filepath.Join(upper, "mod.txt")
os.WriteFile(modFile, []byte("after"), 0644)
beforeContent := []byte("before")
csMod := &ChangeSet{
ID: "cs_mod",
Files: []FileChange{{
Path: "mod.txt",
Type: ChangeFileModified,
Content: beforeContent,
}},
}
trk.saveChangeSet(csMod)
csNew := &ChangeSet{
ID: "cs_new",
Files: []FileChange{{
Path: "new.txt",
Type: ChangeFileCreated,
}},
}
trk.saveChangeSet(csNew)
if trk.ChangesetsOnDisk() != 2 {
t.Fatalf("ChangesetsOnDisk = %d, want 2", trk.ChangesetsOnDisk())
}
// 离线回滚(模拟 guard 在 worker 崩溃后调用)
n, err := trk.RollbackFromDisk()
if err != nil {
t.Fatalf("RollbackFromDisk: %v", err)
}
if n != 2 {
t.Fatalf("rolled back %d, want 2", n)
}
if trk.ChangesetsOnDisk() != 0 {
t.Fatalf("ChangesetsOnDisk after rollback = %d, want 0", trk.ChangesetsOnDisk())
}
// 新建文件被删除
if _, err := os.Stat(newFile); !os.IsNotExist(err) {
t.Fatal("created file should be removed after rollback")
}
// 修改文件还原原文
data, err := os.ReadFile(modFile)
if err != nil {
t.Fatalf("read modFile: %v", err)
}
if string(data) != "before" {
t.Fatalf("modFile restored to %q, want %q", data, beforeContent)
}
}
func TestRollbackFromDiskEmpty(t *testing.T) {
dataDir := t.TempDir()
workDir := t.TempDir()
trk := NewTracker(dataDir, workDir)
if err := trk.Init(); err != nil {
t.Fatalf("Init: %v", err)
}
n, err := trk.RollbackFromDisk()
if err != nil {
t.Fatalf("RollbackFromDisk: %v", err)
}
if n != 0 {
t.Fatalf("rolled back %d, want 0", n)
}
}