Golang context.Background函数代码示例

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本文整理汇总了Golang中github.com/docker/distribution/context.Background函数的典型用法代码示例。如果您正苦于以下问题：Golang Background函数的具体用法？Golang Background怎么用？Golang Background使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。

在下文中一共展示了Background函数的20个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的Golang代码示例。

示例1: TestGCWithMissingManifests

func TestGCWithMissingManifests(t *testing.T) {
	ctx := context.Background()
	d := inmemory.New()

	registry := createRegistry(t, d)
	repo := makeRepository(t, registry, "testrepo")
	uploadRandomSchema1Image(t, repo)

	// Simulate a missing _manifests directory
	revPath, err := pathFor(manifestRevisionsPathSpec{"testrepo"})
	if err != nil {
		t.Fatal(err)
	}

	_manifestsPath := path.Dir(revPath)
	err = d.Delete(ctx, _manifestsPath)
	if err != nil {
		t.Fatal(err)
	}

	err = MarkAndSweep(context.Background(), d, registry, false)
	if err != nil {
		t.Fatalf("Failed mark and sweep: %v", err)
	}

	blobs := allBlobs(t, registry)
	if len(blobs) > 0 {
		t.Errorf("unexpected blobs after gc")
	}
}

开发者ID:ZenoRewn，项目名称:origin，代码行数:30，代码来源:garbagecollect_test.go

示例2: TestCatalog

func TestCatalog(t *testing.T) {
	var m testutil.RequestResponseMap
	addTestCatalog(
		"/v2/_catalog?n=5",
		[]byte("{\"repositories\":[\"foo\", \"bar\", \"baz\"]}"), "", &m)

	e, c := testServer(m)
	defer c()

	entries := make([]string, 5)

	r, err := NewRegistry(context.Background(), e, nil)
	if err != nil {
		t.Fatal(err)
	}

	ctx := context.Background()
	numFilled, err := r.Repositories(ctx, entries, "")
	if err != io.EOF {
		t.Fatal(err)
	}

	if numFilled != 3 {
		t.Fatalf("Got wrong number of repos")
	}
}

开发者ID:nateww，项目名称:distribution，代码行数:26，代码来源:repository_test.go

示例3: execStartStop

func (c *ComposeWrapper) execStartStop(start bool, services ...string) error {
	if start {
		return c.project.Start(context.Background(), services...)
	}
	options := options.Down{}
	return c.project.Down(context.Background(), options, services...)
}

开发者ID:ContainX，项目名称:depcon，代码行数:7，代码来源:compose_wrapper.go

示例4: init

func init() {
	bucket := os.Getenv("REGISTRY_STORAGE_GCS_BUCKET")
	credentials := os.Getenv("GOOGLE_APPLICATION_CREDENTIALS")

	// Skip GCS storage driver tests if environment variable parameters are not provided
	skipGCS = func() string {
		if bucket == "" || credentials == "" {
			return "The following environment variables must be set to enable these tests: REGISTRY_STORAGE_GCS_BUCKET, GOOGLE_APPLICATION_CREDENTIALS"
		}
		return ""
	}

	if skipGCS() != "" {
		return
	}

	root, err := ioutil.TempDir("", "driver-")
	if err != nil {
		panic(err)
	}
	defer os.Remove(root)
	var ts oauth2.TokenSource
	var email string
	var privateKey []byte

	ts, err = google.DefaultTokenSource(ctx.Background(), storage.ScopeFullControl)
	if err != nil {
		// Assume that the file contents are within the environment variable since it exists
		// but does not contain a valid file path
		jwtConfig, err := google.JWTConfigFromJSON([]byte(credentials), storage.ScopeFullControl)
		if err != nil {
			panic(fmt.Sprintf("Error reading JWT config : %s", err))
		}
		email = jwtConfig.Email
		privateKey = []byte(jwtConfig.PrivateKey)
		if len(privateKey) == 0 {
			panic("Error reading JWT config : missing private_key property")
		}
		if email == "" {
			panic("Error reading JWT config : missing client_email property")
		}
		ts = jwtConfig.TokenSource(ctx.Background())
	}

	gcsDriverConstructor = func(rootDirectory string) (storagedriver.StorageDriver, error) {
		parameters := driverParameters{
			bucket:        bucket,
			rootDirectory: root,
			email:         email,
			privateKey:    privateKey,
			client:        oauth2.NewClient(ctx.Background(), ts),
		}

		return New(parameters)
	}

	testsuites.RegisterSuite(func() (storagedriver.StorageDriver, error) {
		return gcsDriverConstructor(root)
	}, skipGCS)
}

开发者ID:dalsh，项目名称:distribution，代码行数:60，代码来源:gcs_test.go

示例5: TestManifestFetch

func TestManifestFetch(t *testing.T) {
	ctx := context.Background()
	repo := "test.example.com/repo"
	m1, dgst := newRandomSchemaV1Manifest(repo, "latest", 6)
	var m testutil.RequestResponseMap
	addTestManifest(repo, dgst.String(), m1.Raw, &m)

	e, c := testServer(m)
	defer c()

	r, err := NewRepository(context.Background(), repo, e, nil)
	if err != nil {
		t.Fatal(err)
	}
	ms, err := r.Manifests(ctx)
	if err != nil {
		t.Fatal(err)
	}

	ok, err := ms.Exists(dgst)
	if err != nil {
		t.Fatal(err)
	}
	if !ok {
		t.Fatal("Manifest does not exist")
	}

	manifest, err := ms.Get(dgst)
	if err != nil {
		t.Fatal(err)
	}
	if err := checkEqualManifest(manifest, m1); err != nil {
		t.Fatal(err)
	}
}

开发者ID:nateww，项目名称:distribution，代码行数:35，代码来源:repository_test.go

示例6: TestManifestFetchWithEtag

func TestManifestFetchWithEtag(t *testing.T) {
	repo := "test.example.com/repo/by/tag"
	m1, d1 := newRandomSchemaV1Manifest(repo, "latest", 6)
	var m testutil.RequestResponseMap
	addTestManifestWithEtag(repo, "latest", m1.Raw, &m, d1.String())

	e, c := testServer(m)
	defer c()

	r, err := NewRepository(context.Background(), repo, e, nil)
	if err != nil {
		t.Fatal(err)
	}
	ctx := context.Background()
	ms, err := r.Manifests(ctx)
	if err != nil {
		t.Fatal(err)
	}

	m2, err := ms.GetByTag("latest", AddEtagToTag("latest", d1.String()))
	if err != nil {
		t.Fatal(err)
	}
	if m2 != nil {
		t.Fatal("Expected empty manifest for matching etag")
	}
}

开发者ID:nateww，项目名称:distribution，代码行数:27，代码来源:repository_test.go

示例7: TestV1ManifestFetch

func TestV1ManifestFetch(t *testing.T) {
	ctx := context.Background()
	repo := "test.example.com/repo"
	m1, dgst, _ := newRandomSchemaV1Manifest(repo, "latest", 6)
	var m testutil.RequestResponseMap
	_, pl, err := m1.Payload()
	if err != nil {
		t.Fatal(err)
	}
	addTestManifest(repo, dgst.String(), pl, &m)
	addTestManifest(repo, "latest", pl, &m)

	e, c := testServer(m)
	defer c()

	r, err := NewRepository(context.Background(), repo, e, nil)
	if err != nil {
		t.Fatal(err)
	}
	ms, err := r.Manifests(ctx)
	if err != nil {
		t.Fatal(err)
	}

	ok, err := ms.Exists(ctx, dgst)
	if err != nil {
		t.Fatal(err)
	}
	if !ok {
		t.Fatal("Manifest does not exist")
	}

	manifest, err := ms.Get(ctx, dgst)
	if err != nil {
		t.Fatal(err)
	}
	v1manifest, ok := manifest.(*schema1.SignedManifest)
	if !ok {
		t.Fatalf("Unexpected manifest type from Get: %T", manifest)
	}

	if err := checkEqualManifest(v1manifest, m1); err != nil {
		t.Fatal(err)
	}

	manifest, err = ms.Get(ctx, dgst, WithTag("latest"))
	if err != nil {
		t.Fatal(err)
	}
	v1manifest, ok = manifest.(*schema1.SignedManifest)
	if !ok {
		t.Fatalf("Unexpected manifest type from Get: %T", manifest)
	}

	if err = checkEqualManifest(v1manifest, m1); err != nil {
		t.Fatal(err)
	}
}

开发者ID:toby82，项目名称:distribution，代码行数:58，代码来源:repository_test.go

示例8: TestRestoreOld

func TestRestoreOld(t *testing.T) {
	ref1, ref2, _ := testRefs(t)
	remainingRepos := map[string]bool{
		ref1.String(): true,
		ref2.String(): true,
	}

	deleteFunc := func(r reference.Reference) error {
		if r.String() == ref1.String() && len(remainingRepos) == 2 {
			t.Errorf("ref1 should be removed first")
		}
		_, ok := remainingRepos[r.String()]
		if !ok {
			t.Fatalf("Trying to remove nonexistent repo: %s", r)
		}
		delete(remainingRepos, r.String())
		return nil
	}

	timeUnit := time.Millisecond
	serialized, err := json.Marshal(&map[string]schedulerEntry{
		ref1.String(): {
			Expiry:    time.Now().Add(1 * timeUnit),
			Key:       ref1.String(),
			EntryType: 0,
		},
		ref2.String(): {
			Expiry:    time.Now().Add(-3 * timeUnit), // TTL passed, should be removed first
			Key:       ref2.String(),
			EntryType: 0,
		},
	})
	if err != nil {
		t.Fatalf("Error serializing test data: %s", err.Error())
	}

	ctx := context.Background()
	pathToStatFile := "/ttl"
	fs := inmemory.New()
	err = fs.PutContent(ctx, pathToStatFile, serialized)
	if err != nil {
		t.Fatal("Unable to write serialized data to fs")
	}
	s := New(context.Background(), fs, "/ttl")
	s.onBlobExpire = deleteFunc
	err = s.Start()
	if err != nil {
		t.Fatalf("Error starting ttlExpirationScheduler: %s", err)
	}

	<-time.After(50 * timeUnit)
	if len(remainingRepos) != 0 {
		t.Fatalf("Repositories remaining: %#v", remainingRepos)
	}
}

开发者ID:CowLeo，项目名称:distribution，代码行数:55，代码来源:scheduler_test.go

示例9: TestManifestTags

func TestManifestTags(t *testing.T) {
	repo := "test.example.com/repo/tags/list"
	tagsList := []byte(strings.TrimSpace(`
{
	"name": "test.example.com/repo/tags/list",
	"tags": [
		"tag1",
		"tag2",
		"funtag"
	]
}
	`))
	var m testutil.RequestResponseMap
	m = append(m, testutil.RequestResponseMapping{
		Request: testutil.Request{
			Method: "GET",
			Route:  "/v2/" + repo + "/tags/list",
		},
		Response: testutil.Response{
			StatusCode: http.StatusOK,
			Body:       tagsList,
			Headers: http.Header(map[string][]string{
				"Content-Length": {fmt.Sprint(len(tagsList))},
				"Last-Modified":  {time.Now().Add(-1 * time.Second).Format(time.ANSIC)},
			}),
		},
	})

	e, c := testServer(m)
	defer c()

	r, err := NewRepository(context.Background(), repo, e, nil)
	if err != nil {
		t.Fatal(err)
	}
	ctx := context.Background()
	ms, err := r.Manifests(ctx)
	if err != nil {
		t.Fatal(err)
	}

	tags, err := ms.Tags()
	if err != nil {
		t.Fatal(err)
	}

	if len(tags) != 3 {
		t.Fatalf("Wrong number of tags returned: %d, expected 3", len(tags))
	}
	// TODO(dmcgowan): Check array

	// TODO(dmcgowan): Check for error cases
}

开发者ID:nateww，项目名称:distribution，代码行数:53，代码来源:repository_test.go

示例10: TestStopRestore

func TestStopRestore(t *testing.T) {
	ref1, ref2, _ := testRefs(t)

	timeUnit := time.Millisecond
	remainingRepos := map[string]bool{
		ref1.String(): true,
		ref2.String(): true,
	}

	var mu sync.Mutex
	deleteFunc := func(r reference.Reference) error {
		mu.Lock()
		delete(remainingRepos, r.String())
		mu.Unlock()
		return nil
	}

	fs := inmemory.New()
	pathToStateFile := "/ttl"
	s := New(context.Background(), fs, pathToStateFile)
	s.onBlobExpire = deleteFunc

	err := s.Start()
	if err != nil {
		t.Fatalf(err.Error())
	}
	s.add(ref1, 300*timeUnit, entryTypeBlob)
	s.add(ref2, 100*timeUnit, entryTypeBlob)

	// Start and stop before all operations complete
	// state will be written to fs
	s.Stop()
	time.Sleep(10 * time.Millisecond)

	// v2 will restore state from fs
	s2 := New(context.Background(), fs, pathToStateFile)
	s2.onBlobExpire = deleteFunc
	err = s2.Start()
	if err != nil {
		t.Fatalf("Error starting v2: %s", err.Error())
	}

	<-time.After(500 * timeUnit)
	mu.Lock()
	defer mu.Unlock()
	if len(remainingRepos) != 0 {
		t.Fatalf("Repositories remaining: %#v", remainingRepos)
	}

}

开发者ID:tpounds，项目名称:distribution，代码行数:50，代码来源:scheduler_test.go

示例11: TestListener

func TestListener(t *testing.T) {
	ctx := context.Background()
	registry := storage.NewRegistryWithDriver(ctx, inmemory.New(), memory.NewInMemoryBlobDescriptorCacheProvider(), true, true)
	tl := &testListener{
		ops: make(map[string]int),
	}

	repository, err := registry.Repository(ctx, "foo/bar")
	if err != nil {
		t.Fatalf("unexpected error getting repo: %v", err)
	}
	repository = Listen(repository, tl)

	// Now take the registry through a number of operations
	checkExerciseRepository(t, repository)

	expectedOps := map[string]int{
		"manifest:push": 1,
		"manifest:pull": 2,
		// "manifest:delete": 0, // deletes not supported for now
		"layer:push": 2,
		"layer:pull": 2,
		// "layer:delete":    0, // deletes not supported for now
	}

	if !reflect.DeepEqual(tl.ops, expectedOps) {
		t.Fatalf("counts do not match:\n%v\n !=\n%v", tl.ops, expectedOps)
	}

}

开发者ID:rsampaio，项目名称:docker-graphtool，代码行数:30，代码来源:listener_test.go

示例12: TestBlobExists

func TestBlobExists(t *testing.T) {
	d1, b1 := newRandomBlob(1024)
	var m testutil.RequestResponseMap
	addTestFetch("test.example.com/repo1", d1, b1, &m)

	e, c := testServer(m)
	defer c()

	ctx := context.Background()
	r, err := NewRepository(ctx, "test.example.com/repo1", e, nil)
	if err != nil {
		t.Fatal(err)
	}
	l := r.Blobs(ctx)

	stat, err := l.Stat(ctx, d1)
	if err != nil {
		t.Fatal(err)
	}

	if stat.Digest != d1 {
		t.Fatalf("Unexpected digest: %s, expected %s", stat.Digest, d1)
	}

	if stat.Size != int64(len(b1)) {
		t.Fatalf("Unexpected length: %d, expected %d", stat.Size, len(b1))
	}

	// TODO(dmcgowan): Test error cases and ErrBlobUnknown case
}

开发者ID:nateww，项目名称:distribution，代码行数:30，代码来源:repository_test.go

示例13: testFS

func testFS(t *testing.T) (driver.StorageDriver, map[string]string, context.Context) {
	d := inmemory.New()
	ctx := context.Background()

	expected := map[string]string{
		"/a":       "dir",
		"/a/b":     "dir",
		"/a/b/c":   "dir",
		"/a/b/c/d": "file",
		"/a/b/c/e": "file",
		"/a/b/f":   "dir",
		"/a/b/f/g": "file",
		"/a/b/f/h": "file",
		"/a/b/f/i": "file",
		"/z":       "dir",
		"/z/y":     "file",
	}

	for p, typ := range expected {
		if typ != "file" {
			continue
		}

		if err := d.PutContent(ctx, p, []byte(p)); err != nil {
			t.Fatalf("unable to put content into fixture: %v", err)
		}
	}

	return d, expected, ctx
}

开发者ID:RomainVabre，项目名称:origin，代码行数:30，代码来源:walk_test.go

示例14: TestBlobDelete

func TestBlobDelete(t *testing.T) {
	dgst, _ := newRandomBlob(1024)
	var m testutil.RequestResponseMap
	repo := "test.example.com/repo1"
	m = append(m, testutil.RequestResponseMapping{
		Request: testutil.Request{
			Method: "DELETE",
			Route:  "/v2/" + repo + "/blobs/" + dgst.String(),
		},
		Response: testutil.Response{
			StatusCode: http.StatusAccepted,
			Headers: http.Header(map[string][]string{
				"Content-Length": {"0"},
			}),
		},
	})

	e, c := testServer(m)
	defer c()

	ctx := context.Background()
	r, err := NewRepository(ctx, repo, e, nil)
	if err != nil {
		t.Fatal(err)
	}
	l := r.Blobs(ctx)
	err = l.Delete(ctx, dgst)
	if err != nil {
		t.Errorf("Error deleting blob: %s", err.Error())
	}

}

开发者ID:nateww，项目名称:distribution，代码行数:32，代码来源:repository_test.go

示例15: TestBlobFetch

func TestBlobFetch(t *testing.T) {
	d1, b1 := newRandomBlob(1024)
	var m testutil.RequestResponseMap
	addTestFetch("test.example.com/repo1", d1, b1, &m)

	e, c := testServer(m)
	defer c()

	ctx := context.Background()
	r, err := NewRepository(ctx, "test.example.com/repo1", e, nil)
	if err != nil {
		t.Fatal(err)
	}
	l := r.Blobs(ctx)

	b, err := l.Get(ctx, d1)
	if err != nil {
		t.Fatal(err)
	}
	if bytes.Compare(b, b1) != 0 {
		t.Fatalf("Wrong bytes values fetched: [%d]byte != [%d]byte", len(b), len(b1))
	}

	// TODO(dmcgowan): Test for unknown blob case
}

开发者ID:nateww，项目名称:distribution，代码行数:25，代码来源:repository_test.go

示例16: checkRepo

func checkRepo(registry distribution.Namespace, repoName string) error {
	ctx := context.Background()

	repo, err := registry.Repository(ctx, repoName)
	if err != nil {
		return fmt.Errorf("unexpected error getting repository: %v", err)
	}
	manifests, err := repo.Manifests(ctx)
	if err != nil {
		return fmt.Errorf("unexpected error getting manifests: %v", err)
	}

	tags, err := manifests.Tags()
	if err != nil {
		return fmt.Errorf("unexpected error getting tags: %v", err)
	}

	fmt.Fprintf(os.Stderr, "checking repo %s (%d tags)\n", repoName)

	for _, tag := range tags {
		mnfst, err := manifests.GetByTag(tag)
		if err != nil {
			return fmt.Errorf("unexpected error getting manifest by tag: %v", err)
		}

		if err = checkManifest(repoName, mnfst); err != nil {
			return err
		}
	}

	return nil
}

开发者ID:aaronlehmann，项目名称:manifest-check，代码行数:32，代码来源:main.go

示例17: TestManifestDelete

func TestManifestDelete(t *testing.T) {
	repo := "test.example.com/repo/delete"
	_, dgst1 := newRandomSchemaV1Manifest(repo, "latest", 6)
	_, dgst2 := newRandomSchemaV1Manifest(repo, "latest", 6)
	var m testutil.RequestResponseMap
	m = append(m, testutil.RequestResponseMapping{
		Request: testutil.Request{
			Method: "DELETE",
			Route:  "/v2/" + repo + "/manifests/" + dgst1.String(),
		},
		Response: testutil.Response{
			StatusCode: http.StatusOK,
			Headers: http.Header(map[string][]string{
				"Content-Length": {"0"},
			}),
		},
	})

	e, c := testServer(m)
	defer c()

	r, err := NewRepository(context.Background(), repo, e, nil)
	if err != nil {
		t.Fatal(err)
	}

	ms := r.Manifests()
	if err := ms.Delete(dgst1); err != nil {
		t.Fatal(err)
	}
	if err := ms.Delete(dgst2); err == nil {
		t.Fatal("Expected error deleting unknown manifest")
	}
	// TODO(dmcgowan): Check for specific unknown error
}

开发者ID:denverdino，项目名称:distribution-fuse，代码行数:35，代码来源:repository_test.go

示例18: simpleUpload

func simpleUpload(t *testing.T, bs distribution.BlobIngester, blob []byte, expectedDigest digest.Digest) {
	ctx := context.Background()
	wr, err := bs.Create(ctx)
	if err != nil {
		t.Fatalf("unexpected error starting upload: %v", err)
	}

	nn, err := io.Copy(wr, bytes.NewReader(blob))
	if err != nil {
		t.Fatalf("error copying into blob writer: %v", err)
	}

	if nn != 0 {
		t.Fatalf("unexpected number of bytes copied: %v > 0", nn)
	}

	dgst, err := digest.FromReader(bytes.NewReader(blob))
	if err != nil {
		t.Fatalf("error getting digest: %v", err)
	}

	if dgst != expectedDigest {
		// sanity check on zero digest
		t.Fatalf("digest not as expected: %v != %v", dgst, expectedDigest)
	}

	desc, err := wr.Commit(ctx, distribution.Descriptor{Digest: dgst})
	if err != nil {
		t.Fatalf("unexpected error committing write: %v", err)
	}

	if desc.Digest != dgst {
		t.Fatalf("unexpected digest: %v != %v", desc.Digest, dgst)
	}
}

开发者ID:rkazak，项目名称:distribution，代码行数:35，代码来源:blob_test.go

示例19: CheckBlobDescriptorCache

// CheckBlobDescriptorCache takes a cache implementation through a common set
// of operations. If adding new tests, please add them here so new
// implementations get the benefit. This should be used for unit tests.
func CheckBlobDescriptorCache(t *testing.T, provider cache.BlobDescriptorCacheProvider) {
	ctx := context.Background()

	checkBlobDescriptorCacheEmptyRepository(ctx, t, provider)
	checkBlobDescriptorCacheSetAndRead(ctx, t, provider)
	checkBlobDescriptorCacheClear(ctx, t, provider)
}

开发者ID:sakserv，项目名称:distribution，代码行数:10，代码来源:suite.go

示例20: TestSillyAccessController

func TestSillyAccessController(t *testing.T) {
	ac := &accessController{
		realm:   "test-realm",
		service: "test-service",
	}

	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		ctx := context.WithRequest(context.Background(), r)
		authCtx, err := ac.Authorized(ctx)
		if err != nil {
			switch err := err.(type) {
			case auth.Challenge:
				err.SetHeaders(w)
				w.WriteHeader(http.StatusUnauthorized)
				return
			default:
				t.Fatalf("unexpected error authorizing request: %v", err)
			}
		}

		userInfo, ok := authCtx.Value(auth.UserKey).(auth.UserInfo)
		if !ok {
			t.Fatal("silly accessController did not set auth.user context")
		}

		if userInfo.Name != "silly" {
			t.Fatalf("expected user name %q, got %q", "silly", userInfo.Name)
		}

		w.WriteHeader(http.StatusNoContent)
	}))

	resp, err := http.Get(server.URL)
	if err != nil {
		t.Fatalf("unexpected error during GET: %v", err)
	}
	defer resp.Body.Close()

	// Request should not be authorized
	if resp.StatusCode != http.StatusUnauthorized {
		t.Fatalf("unexpected response status: %v != %v", resp.StatusCode, http.StatusUnauthorized)
	}

	req, err := http.NewRequest("GET", server.URL, nil)
	if err != nil {
		t.Fatalf("unexpected error creating new request: %v", err)
	}
	req.Header.Set("Authorization", "seriously, anything")

	resp, err = http.DefaultClient.Do(req)
	if err != nil {
		t.Fatalf("unexpected error during GET: %v", err)
	}
	defer resp.Body.Close()

	// Request should not be authorized
	if resp.StatusCode != http.StatusNoContent {
		t.Fatalf("unexpected response status: %v != %v", resp.StatusCode, http.StatusNoContent)
	}
}

开发者ID:sakserv，项目名称:distribution，代码行数:60，代码来源:access_test.go

注：本文中的github.com/docker/distribution/context.Background函数示例整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。