mirror of https://github.com/restic/restic.git
399 lines
8.6 KiB
Go
399 lines
8.6 KiB
Go
package main
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import (
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"bytes"
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"context"
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"crypto/rand"
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"fmt"
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"io"
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"os"
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"path/filepath"
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"runtime"
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"sync"
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"testing"
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"github.com/restic/restic/internal/backend"
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"github.com/restic/restic/internal/backend/retry"
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"github.com/restic/restic/internal/errors"
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"github.com/restic/restic/internal/options"
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"github.com/restic/restic/internal/repository"
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"github.com/restic/restic/internal/restic"
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rtest "github.com/restic/restic/internal/test"
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"github.com/restic/restic/internal/ui/termstatus"
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)
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type dirEntry struct {
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path string
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fi os.FileInfo
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link uint64
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}
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func walkDir(dir string) <-chan *dirEntry {
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ch := make(chan *dirEntry, 100)
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go func() {
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err := filepath.Walk(dir, func(path string, info os.FileInfo, err error) error {
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if err != nil {
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fmt.Fprintf(os.Stderr, "error: %v\n", err)
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return nil
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}
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name, err := filepath.Rel(dir, path)
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if err != nil {
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fmt.Fprintf(os.Stderr, "error: %v\n", err)
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return nil
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}
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ch <- &dirEntry{
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path: name,
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fi: info,
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link: nlink(info),
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}
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return nil
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})
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if err != nil {
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fmt.Fprintf(os.Stderr, "Walk() error: %v\n", err)
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}
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close(ch)
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}()
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// first element is root
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<-ch
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return ch
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}
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func isSymlink(fi os.FileInfo) bool {
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mode := fi.Mode() & (os.ModeType | os.ModeCharDevice)
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return mode == os.ModeSymlink
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}
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func sameModTime(fi1, fi2 os.FileInfo) bool {
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switch runtime.GOOS {
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case "darwin", "freebsd", "openbsd", "netbsd", "solaris":
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if isSymlink(fi1) && isSymlink(fi2) {
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return true
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}
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}
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return fi1.ModTime().Equal(fi2.ModTime())
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}
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// directoriesContentsDiff returns a diff between both directories. If these
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// contain exactly the same contents, then the diff is an empty string.
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func directoriesContentsDiff(dir1, dir2 string) string {
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var out bytes.Buffer
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ch1 := walkDir(dir1)
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ch2 := walkDir(dir2)
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var a, b *dirEntry
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for {
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var ok bool
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if ch1 != nil && a == nil {
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a, ok = <-ch1
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if !ok {
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ch1 = nil
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}
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}
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if ch2 != nil && b == nil {
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b, ok = <-ch2
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if !ok {
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ch2 = nil
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}
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}
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if ch1 == nil && ch2 == nil {
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break
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}
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if ch1 == nil {
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fmt.Fprintf(&out, "+%v\n", b.path)
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} else if ch2 == nil {
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fmt.Fprintf(&out, "-%v\n", a.path)
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} else if !a.equals(&out, b) {
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if a.path < b.path {
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fmt.Fprintf(&out, "-%v\n", a.path)
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a = nil
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continue
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} else if a.path > b.path {
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fmt.Fprintf(&out, "+%v\n", b.path)
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b = nil
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continue
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}
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fmt.Fprintf(&out, "%%%v\n", a.path)
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}
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a, b = nil, nil
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}
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return out.String()
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}
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type dirStat struct {
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files, dirs, other uint
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size uint64
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}
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func isFile(fi os.FileInfo) bool {
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return fi.Mode()&(os.ModeType|os.ModeCharDevice) == 0
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}
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// dirStats walks dir and collects stats.
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func dirStats(dir string) (stat dirStat) {
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for entry := range walkDir(dir) {
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if isFile(entry.fi) {
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stat.files++
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stat.size += uint64(entry.fi.Size())
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continue
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}
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if entry.fi.IsDir() {
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stat.dirs++
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continue
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}
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stat.other++
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}
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return stat
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}
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type testEnvironment struct {
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base, cache, repo, mountpoint, testdata string
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gopts GlobalOptions
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}
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// withTestEnvironment creates a test environment and returns a cleanup
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// function which removes it.
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func withTestEnvironment(t testing.TB) (env *testEnvironment, cleanup func()) {
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if !rtest.RunIntegrationTest {
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t.Skip("integration tests disabled")
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}
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repository.TestUseLowSecurityKDFParameters(t)
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restic.TestDisableCheckPolynomial(t)
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retry.TestFastRetries(t)
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tempdir, err := os.MkdirTemp(rtest.TestTempDir, "restic-test-")
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rtest.OK(t, err)
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env = &testEnvironment{
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base: tempdir,
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cache: filepath.Join(tempdir, "cache"),
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repo: filepath.Join(tempdir, "repo"),
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testdata: filepath.Join(tempdir, "testdata"),
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mountpoint: filepath.Join(tempdir, "mount"),
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}
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rtest.OK(t, os.MkdirAll(env.mountpoint, 0700))
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rtest.OK(t, os.MkdirAll(env.testdata, 0700))
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rtest.OK(t, os.MkdirAll(env.cache, 0700))
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rtest.OK(t, os.MkdirAll(env.repo, 0700))
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env.gopts = GlobalOptions{
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Repo: env.repo,
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Quiet: true,
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CacheDir: env.cache,
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password: rtest.TestPassword,
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stdout: os.Stdout,
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stderr: os.Stderr,
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extended: make(options.Options),
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// replace this hook with "nil" if listing a filetype more than once is necessary
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backendTestHook: func(r backend.Backend) (backend.Backend, error) { return newOrderedListOnceBackend(r), nil },
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// start with default set of backends
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backends: globalOptions.backends,
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}
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// always overwrite global options
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globalOptions = env.gopts
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cleanup = func() {
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if !rtest.TestCleanupTempDirs {
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t.Logf("leaving temporary directory %v used for test", tempdir)
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return
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}
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rtest.RemoveAll(t, tempdir)
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}
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return env, cleanup
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}
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func testSetupBackupData(t testing.TB, env *testEnvironment) string {
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datafile := filepath.Join("testdata", "backup-data.tar.gz")
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testRunInit(t, env.gopts)
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rtest.SetupTarTestFixture(t, env.testdata, datafile)
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return datafile
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}
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func listPacks(gopts GlobalOptions, t *testing.T) restic.IDSet {
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ctx, r, unlock, err := openWithReadLock(context.TODO(), gopts, false)
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rtest.OK(t, err)
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defer unlock()
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packs := restic.NewIDSet()
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rtest.OK(t, r.List(ctx, restic.PackFile, func(id restic.ID, size int64) error {
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packs.Insert(id)
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return nil
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}))
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return packs
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}
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func listTreePacks(gopts GlobalOptions, t *testing.T) restic.IDSet {
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ctx, r, unlock, err := openWithReadLock(context.TODO(), gopts, false)
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rtest.OK(t, err)
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defer unlock()
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rtest.OK(t, r.LoadIndex(ctx, nil))
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treePacks := restic.NewIDSet()
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rtest.OK(t, r.Index().Each(ctx, func(pb restic.PackedBlob) {
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if pb.Type == restic.TreeBlob {
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treePacks.Insert(pb.PackID)
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}
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}))
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return treePacks
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}
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func removePacks(gopts GlobalOptions, t testing.TB, remove restic.IDSet) {
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ctx, r, unlock, err := openWithExclusiveLock(context.TODO(), gopts, false)
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rtest.OK(t, err)
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defer unlock()
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for id := range remove {
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rtest.OK(t, r.Backend().Remove(ctx, backend.Handle{Type: restic.PackFile, Name: id.String()}))
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}
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}
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func removePacksExcept(gopts GlobalOptions, t testing.TB, keep restic.IDSet, removeTreePacks bool) {
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ctx, r, unlock, err := openWithExclusiveLock(context.TODO(), gopts, false)
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rtest.OK(t, err)
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defer unlock()
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// Get all tree packs
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rtest.OK(t, r.LoadIndex(ctx, nil))
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treePacks := restic.NewIDSet()
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rtest.OK(t, r.Index().Each(ctx, func(pb restic.PackedBlob) {
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if pb.Type == restic.TreeBlob {
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treePacks.Insert(pb.PackID)
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}
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}))
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// remove all packs containing data blobs
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rtest.OK(t, r.List(ctx, restic.PackFile, func(id restic.ID, size int64) error {
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if treePacks.Has(id) != removeTreePacks || keep.Has(id) {
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return nil
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}
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return r.Backend().Remove(ctx, backend.Handle{Type: restic.PackFile, Name: id.String()})
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}))
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}
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func includes(haystack []string, needle string) bool {
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for _, s := range haystack {
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if s == needle {
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return true
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}
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}
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return false
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}
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func loadSnapshotMap(t testing.TB, gopts GlobalOptions) map[string]struct{} {
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snapshotIDs := testRunList(t, "snapshots", gopts)
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m := make(map[string]struct{})
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for _, id := range snapshotIDs {
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m[id.String()] = struct{}{}
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}
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return m
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}
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func lastSnapshot(old, new map[string]struct{}) (map[string]struct{}, string) {
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for k := range new {
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if _, ok := old[k]; !ok {
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old[k] = struct{}{}
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return old, k
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}
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}
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return old, ""
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}
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func appendRandomData(filename string, bytes uint) error {
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f, err := os.OpenFile(filename, os.O_WRONLY|os.O_CREATE, 0666)
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if err != nil {
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fmt.Fprint(os.Stderr, err)
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return err
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}
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_, err = f.Seek(0, 2)
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if err != nil {
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fmt.Fprint(os.Stderr, err)
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return err
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}
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_, err = io.Copy(f, io.LimitReader(rand.Reader, int64(bytes)))
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if err != nil {
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fmt.Fprint(os.Stderr, err)
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return err
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}
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return f.Close()
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}
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func testFileSize(filename string, size int64) error {
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fi, err := os.Stat(filename)
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if err != nil {
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return err
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}
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if fi.Size() != size {
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return errors.Fatalf("wrong file size for %v: expected %v, got %v", filename, size, fi.Size())
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}
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return nil
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}
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func withRestoreGlobalOptions(inner func() error) error {
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gopts := globalOptions
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defer func() {
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globalOptions = gopts
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}()
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return inner()
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}
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func withCaptureStdout(inner func() error) (*bytes.Buffer, error) {
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buf := bytes.NewBuffer(nil)
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err := withRestoreGlobalOptions(func() error {
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globalOptions.stdout = buf
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return inner()
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})
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return buf, err
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}
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func withTermStatus(gopts GlobalOptions, callback func(ctx context.Context, term *termstatus.Terminal) error) error {
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ctx, cancel := context.WithCancel(context.TODO())
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var wg sync.WaitGroup
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term := termstatus.New(gopts.stdout, gopts.stderr, gopts.Quiet)
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wg.Add(1)
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go func() {
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defer wg.Done()
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term.Run(ctx)
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}()
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defer wg.Wait()
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defer cancel()
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return callback(ctx, term)
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}
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