321 lines
10 KiB
Go
321 lines
10 KiB
Go
package runtimelog
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import (
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"bytes"
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"compress/gzip"
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"context"
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"os"
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"path/filepath"
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"strings"
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"testing"
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"time"
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)
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func writeMigrationFile(t *testing.T, path string, data []byte) {
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t.Helper()
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if err := os.MkdirAll(filepath.Dir(path), 0700); err != nil {
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t.Fatal(err)
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}
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if err := os.WriteFile(path, data, 0600); err != nil {
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t.Fatal(err)
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}
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}
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func TestRuntimeLogFlatDirectoryAndLegacyMigration(t *testing.T) {
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for _, upgrade := range []bool{false, true} {
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t.Run(map[bool]string{false: "fresh", true: "upgrade"}[upgrade], func(t *testing.T) {
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root := t.TempDir()
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directory := filepath.Join(root, "log")
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old := filepath.Join(directory, legacyDirectory)
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now := time.Now().UTC()
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name := prefix + now.Format("2006-01-02") + ".log"
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archivedAt := now.Add(-9 * 24 * time.Hour)
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archived := prefix + archivedAt.Format("2006-01-02") + ".log.gz"
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line := "[" + now.Format(time.RFC3339Nano) + "] 迁移前的运行日志\n"
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var compressed bytes.Buffer
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archive := gzip.NewWriter(&compressed)
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if _, err := archive.Write([]byte("[" + archivedAt.Format(time.RFC3339Nano) + "] 压缩记录\n")); err != nil {
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t.Fatal(err)
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}
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if err := archive.Close(); err != nil {
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t.Fatal(err)
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}
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var modified time.Time
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if upgrade {
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writeMigrationFile(t, filepath.Join(old, name), []byte(line))
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writeMigrationFile(t, filepath.Join(old, archived), compressed.Bytes())
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if err := os.Chtimes(filepath.Join(old, archived), archivedAt, archivedAt); err != nil {
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t.Fatal(err)
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}
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info, err := os.Stat(filepath.Join(old, archived))
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if err != nil {
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t.Fatal(err)
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}
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modified = info.ModTime()
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}
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// 重复启动不重新创建旧目录，迁移后的当前日志仍可追加。
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for attempt := 0; attempt < 2; attempt++ {
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w, err := New(root)
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if err != nil {
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t.Fatal(err)
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}
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defer w.Close()
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w.now = func() time.Time { return now }
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if _, err := os.Lstat(old); !os.IsNotExist(err) {
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t.Fatalf("legacy directory exists: %v", err)
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}
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if upgrade {
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data, err := os.ReadFile(filepath.Join(directory, archived))
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if err != nil || !bytes.Equal(data, compressed.Bytes()) {
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t.Fatalf("archive changed: %v", err)
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}
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info, err := os.Stat(filepath.Join(directory, archived))
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if err != nil || !modified.Equal(info.ModTime()) {
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t.Fatalf("archive time changed: %v", err)
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}
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page, err := w.Read(context.Background(), archived, 0, 100)
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if err != nil || len(page.Lines) != 1 || !strings.Contains(page.Lines[0], "压缩记录") {
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t.Fatalf("archive query: %+v %v", page, err)
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}
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}
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if err := w.WriteAt(now, "迁移后的日志"); err != nil {
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t.Fatal(err)
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}
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if err := w.Maintain(context.Background(), now); err != nil {
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t.Fatal(err)
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}
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files, err := w.Files()
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if err != nil || len(files) != map[bool]int{false: 1, true: 2}[upgrade] {
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t.Fatalf("files: %+v %v", files, err)
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}
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if err := w.Close(); err != nil {
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t.Fatal(err)
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}
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data, err := os.ReadFile(filepath.Join(directory, name))
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if err != nil || (upgrade && !bytes.HasPrefix(data, []byte(line))) {
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t.Fatalf("original log prefix lost: %v", err)
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}
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}
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})
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}
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}
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func TestRuntimeLogMigrationPreflightPreservesConflicts(t *testing.T) {
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for _, kind := range []string{"different", "identical", "directory", "symlink"} {
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t.Run(kind, func(t *testing.T) {
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root := t.TempDir()
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directory := filepath.Join(root, "log")
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old := filepath.Join(directory, legacyDirectory)
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first, conflict := "runtime-2026-09-07.log", "runtime-2026-09-08.log"
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for _, name := range []string{first, conflict} {
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writeMigrationFile(t, filepath.Join(old, name), []byte("original"))
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}
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target := filepath.Join(directory, conflict)
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switch kind {
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case "directory":
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if err := os.Mkdir(target, 0700); err != nil {
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t.Fatal(err)
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}
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case "symlink":
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if err := os.Symlink(filepath.Join(old, conflict), target); err != nil {
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t.Skipf("symlink unavailable: %v", err)
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}
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default:
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data := "conflicting"
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if kind == "identical" {
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data = "original"
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}
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writeMigrationFile(t, target, []byte(data))
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}
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before, err := os.Lstat(target)
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if err != nil {
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t.Fatal(err)
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}
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if w, err := New(root); err == nil {
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w.Close()
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t.Fatal("conflict accepted")
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}
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for _, name := range []string{first, conflict} {
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data, err := os.ReadFile(filepath.Join(old, name))
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if err != nil || string(data) != "original" {
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t.Fatalf("source changed: %v", err)
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}
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}
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if _, err := os.Lstat(filepath.Join(directory, first)); !os.IsNotExist(err) {
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t.Fatal("preflight moved a file before detecting conflict")
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}
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after, err := os.Lstat(target)
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if err != nil || !os.SameFile(before, after) || before.Size() != after.Size() || !before.ModTime().Equal(after.ModTime()) {
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t.Fatalf("target changed: %v", err)
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}
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})
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}
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}
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func TestRuntimeLogMigrationPreservesUnknownAndResumes(t *testing.T) {
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root := t.TempDir()
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directory := filepath.Join(root, "log")
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old := filepath.Join(directory, legacyDirectory)
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// 顶层文件模拟前一次已完成的迁移，损坏归档只搬运，不在迁移阶段改写或删除。
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files := map[string]string{
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filepath.Join(directory, "runtime-2026-09-07.log"): "already migrated",
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filepath.Join(directory, "config-audit-v2.jsonl"): "historical audit",
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filepath.Join(old, "runtime-2026-09-08.log.gz"): "damaged archive",
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filepath.Join(old, "runtime-2026-99-99.log"): "unknown name",
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filepath.Join(old, "manual", "notes.log"): "manual notes",
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}
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for path, content := range files {
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writeMigrationFile(t, path, []byte(content))
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}
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for attempt := 0; attempt < 2; attempt++ {
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w, err := New(root)
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if err != nil {
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t.Fatal(err)
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}
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if err := w.Close(); err != nil {
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t.Fatal(err)
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}
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}
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for path, content := range files {
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if filepath.Base(path) == "runtime-2026-09-08.log.gz" {
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if _, err := os.Lstat(path); !os.IsNotExist(err) {
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t.Fatal("migrated source remains")
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}
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path = filepath.Join(directory, filepath.Base(path))
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}
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data, err := os.ReadFile(path)
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if err != nil || string(data) != content {
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t.Fatalf("evidence changed %s: %v", path, err)
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}
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}
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}
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func TestRuntimeLogMigrationRejectsUnsafeSource(t *testing.T) {
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for _, kind := range []string{"legacy-file", "legacy-link", "entry-directory", "entry-link"} {
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t.Run(kind, func(t *testing.T) {
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root := t.TempDir()
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directory := filepath.Join(root, "log")
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old := filepath.Join(directory, legacyDirectory)
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outside := t.TempDir()
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if err := os.MkdirAll(directory, 0700); err != nil {
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t.Fatal(err)
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}
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name := "runtime-2026-09-08.log"
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writeMigrationFile(t, filepath.Join(outside, name), []byte("outside evidence"))
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switch kind {
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case "legacy-file":
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writeMigrationFile(t, old, []byte("not a directory"))
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case "legacy-link":
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if err := os.Symlink(outside, old); err != nil {
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t.Skipf("symlink unavailable: %v", err)
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}
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default:
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if err := os.Mkdir(old, 0700); err != nil {
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t.Fatal(err)
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}
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if kind == "entry-directory" {
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if err := os.Mkdir(filepath.Join(old, name), 0700); err != nil {
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t.Fatal(err)
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}
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} else if err := os.Symlink(filepath.Join(outside, name), filepath.Join(old, name)); err != nil {
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t.Skipf("symlink unavailable: %v", err)
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}
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}
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if w, err := New(root); err == nil {
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w.Close()
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t.Fatal("unsafe source accepted")
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}
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data, err := os.ReadFile(filepath.Join(outside, name))
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if err != nil || string(data) != "outside evidence" {
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t.Fatalf("outside file changed: %v", err)
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}
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if _, err := os.Lstat(filepath.Join(directory, name)); !os.IsNotExist(err) {
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t.Fatal("unsafe source copied")
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}
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})
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}
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}
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func TestRuntimeLogMigrationCopyRechecksTargetAndSource(t *testing.T) {
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for _, conflict := range []bool{false, true} {
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t.Run(map[bool]string{false: "source-changed", true: "target-created"}[conflict], func(t *testing.T) {
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directory := t.TempDir()
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old := filepath.Join(directory, legacyDirectory)
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name := "runtime-2026-09-08.log"
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writeMigrationFile(t, filepath.Join(old, name), []byte("original"))
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expected, err := os.Stat(filepath.Join(old, name))
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if err != nil {
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t.Fatal(err)
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}
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root, err := os.OpenRoot(directory)
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if err != nil {
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t.Fatal(err)
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}
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defer root.Close()
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legacy, err := root.OpenRoot(legacyDirectory)
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if err != nil {
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t.Fatal(err)
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}
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defer legacy.Close()
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if conflict {
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writeMigrationFile(t, filepath.Join(directory, name), []byte("target evidence"))
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} else {
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writeMigrationFile(t, filepath.Join(old, name), []byte("changed source"))
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}
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if err := moveLegacyLog(legacy, root, name, expected); err == nil {
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t.Fatal("changed migration input accepted")
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}
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data, err := os.ReadFile(filepath.Join(old, name))
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want := map[bool]string{false: "changed source", true: "original"}[conflict]
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if err != nil || string(data) != want {
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t.Fatalf("source lost: %v", err)
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}
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if conflict {
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data, err := os.ReadFile(filepath.Join(directory, name))
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if err != nil || string(data) != "target evidence" {
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t.Fatalf("target overwritten: %v", err)
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}
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} else if _, err := os.Lstat(filepath.Join(directory, name)); !os.IsNotExist(err) {
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t.Fatal("unexpected destination")
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}
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})
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}
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}
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func TestRuntimeLogMigrationEmptyDirectoryAndSameDayFormats(t *testing.T) {
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for _, empty := range []bool{true, false} {
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t.Run(map[bool]string{true: "empty", false: "same-day-formats"}[empty], func(t *testing.T) {
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root := t.TempDir()
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directory := filepath.Join(root, "log")
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old := filepath.Join(directory, legacyDirectory)
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if err := os.MkdirAll(old, 0700); err != nil {
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t.Fatal(err)
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}
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files := map[string]string{}
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if !empty {
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files["runtime-2026-09-08.log"] = "plain evidence"
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files["runtime-2026-09-08.log.gz"] = "compressed evidence"
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for name, content := range files {
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writeMigrationFile(t, filepath.Join(old, name), []byte(content))
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}
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}
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w, err := New(root)
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if err != nil {
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t.Fatal(err)
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}
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if err := w.Close(); err != nil {
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t.Fatal(err)
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}
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if _, err := os.Lstat(old); !os.IsNotExist(err) {
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t.Fatalf("empty legacy directory remains: %v", err)
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}
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for name, content := range files {
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data, err := os.ReadFile(filepath.Join(directory, name))
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if err != nil || string(data) != content {
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t.Fatalf("same-day evidence changed: %v", err)
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}
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}
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})
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}
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}
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