Golang swift.Metadata類代碼示例

func TestTempUrl(t *testing.T) {
	err := c.ObjectPutBytes(CONTAINER, OBJECT, []byte(CONTENTS), "")
	if err != nil {
		t.Fatal(err)
	}

	m := swift.Metadata{}
	m["temp-url-key"] = SECRET_KEY
	err = c.AccountUpdate(m.AccountHeaders())
	if err != nil {
		t.Fatal(err)
	}

	expiresTime := time.Now().Add(20 * time.Minute)
	tempUrl := c.ObjectTempUrl(CONTAINER, OBJECT, SECRET_KEY, "GET", expiresTime)
	resp, err := http.Get(tempUrl)
	if err != nil {
		t.Fatal("Failed to retrieve file from temporary url")
	}
	if resp.StatusCode == 401 {
		t.Log("Server doesn't support tempurl")
	} else if resp.StatusCode != 200 {
		t.Fatal("HTTP Error retrieving file from temporary url", resp.StatusCode)
	} else {
		if content, err := ioutil.ReadAll(resp.Body); err != nil || string(content) != CONTENTS {
			t.Error("Bad content", err)
		}
	}

	resp.Body.Close()
	err = c.ObjectDelete(CONTAINER, OBJECT)
	if err != nil {
		t.Fatal(err)
	}
}

// Update the object with the contents of the io.Reader, modTime and size
//
// The new object may have been created if an error is returned
func (o *FsObjectSwift) Update(in io.Reader, modTime time.Time, size int64) error {
	// Set the mtime
	m := swift.Metadata{}
	m.SetModTime(modTime)
	_, err := o.swift.c.ObjectPut(o.swift.container, o.swift.root+o.remote, in, true, "", "", m.ObjectHeaders())
	if err != nil {
		return err
	}
	// Read the metadata from the newly created object
	o.meta = nil // wipe old metadata
	err = o.readMetaData()
	return err
}

// Update the object with the contents of the io.Reader, modTime and size
//
// The new object may have been created if an error is returned
func (o *Object) Update(in io.Reader, src fs.ObjectInfo) error {
	size := src.Size()
	modTime := src.ModTime()

	// Note whether this is a dynamic large object before starting
	isDynamicLargeObject, err := o.isDynamicLargeObject()
	if err != nil {
		return err
	}

	// Set the mtime
	m := swift.Metadata{}
	m.SetModTime(modTime)
	contentType := fs.MimeType(src)
	headers := m.ObjectHeaders()
	uniquePrefix := ""
	if size > int64(chunkSize) {
		uniquePrefix, err = o.updateChunks(in, headers, size, contentType)
		if err != nil {
			return err
		}
	} else {
		headers["Content-Length"] = strconv.FormatInt(size, 10) // set Content-Length as we know it
		_, err := o.fs.c.ObjectPut(o.fs.container, o.fs.root+o.remote, in, true, "", contentType, headers)
		if err != nil {
			return err
		}
	}

	// If file was a dynamic large object then remove old/all segments
	if isDynamicLargeObject {
		err = o.removeSegments(uniquePrefix)
		if err != nil {
			fs.Log(o, "Failed to remove old segments - carrying on with upload: %v", err)
		}
	}

	// Read the metadata from the newly created object
	o.headers = nil // wipe old metadata
	return o.readMetaData()
}

// Update the object with the contents of the io.Reader, modTime and size
//
// The new object may have been created if an error is returned
func (o *Object) Update(in io.Reader, modTime time.Time, size int64) error {
	// Note whether this has a manifest before starting
	isManifest, err := o.isManifestFile()
	if err != nil {
		return err
	}

	// Set the mtime
	m := swift.Metadata{}
	m.SetModTime(modTime)
	headers := m.ObjectHeaders()
	uniquePrefix := ""
	if size > int64(chunkSize) {
		uniquePrefix, err = o.updateChunks(in, headers, size)
		if err != nil {
			return err
		}
	} else {
		headers["Content-Length"] = strconv.FormatInt(size, 10) // set Content-Length as we know it
		_, err := o.fs.c.ObjectPut(o.fs.container, o.fs.root+o.remote, in, true, "", "", headers)
		if err != nil {
			return err
		}
	}

	// If file was a manifest then remove old/all segments
	if isManifest {
		err = o.removeSegments(uniquePrefix)
		if err != nil {
			fs.Log(o, "Failed to remove old segments - carrying on with upload: %v", err)
		}
	}

	// Read the metadata from the newly created object
	o.headers = nil // wipe old metadata
	return o.readMetaData()
}

func TestObjectCopyWithMetadata(t *testing.T) {
	m := swift.Metadata{}
	m["copy-special-metadata"] = "hello"
	m["hello"] = "3"
	h := m.ObjectHeaders()
	h["Content-Type"] = "image/jpeg"
	_, err := c.ObjectCopy(CONTAINER, OBJECT, CONTAINER, OBJECT2, h)
	if err != nil {
		t.Fatal(err)
	}
	// Re-read the metadata to see if it is correct
	_, headers, err := c.Object(CONTAINER, OBJECT2)
	if err != nil {
		t.Fatal(err)
	}
	if headers["Content-Type"] != "image/jpeg" {
		t.Error("Didn't change content type")
	}
	compareMaps(t, headers.ObjectMetadata(), map[string]string{"hello": "3", "potato-salad": "", "copy-special-metadata": "hello"})
	err = c.ObjectDelete(CONTAINER, OBJECT2)
	if err != nil {
		t.Fatal(err)
	}
}

// New constructs a new Driver with the given Openstack Swift credentials and container name
func New(params Parameters) (*Driver, error) {
	transport := &http.Transport{
		Proxy:               http.ProxyFromEnvironment,
		MaxIdleConnsPerHost: 2048,
		TLSClientConfig:     &tls.Config{InsecureSkipVerify: params.InsecureSkipVerify},
	}

	ct := swift.Connection{
		UserName:       params.Username,
		ApiKey:         params.Password,
		AuthUrl:        params.AuthURL,
		Region:         params.Region,
		UserAgent:      "distribution/" + version.Version,
		Tenant:         params.Tenant,
		TenantId:       params.TenantID,
		Domain:         params.Domain,
		DomainId:       params.DomainID,
		TrustId:        params.TrustID,
		Transport:      transport,
		ConnectTimeout: 60 * time.Second,
		Timeout:        15 * 60 * time.Second,
	}
	err := ct.Authenticate()
	if err != nil {
		return nil, fmt.Errorf("Swift authentication failed: %s", err)
	}

	if _, _, err := ct.Container(params.Container); err == swift.ContainerNotFound {
		if err := ct.ContainerCreate(params.Container, nil); err != nil {
			return nil, fmt.Errorf("Failed to create container %s (%s)", params.Container, err)
		}
	} else if err != nil {
		return nil, fmt.Errorf("Failed to retrieve info about container %s (%s)", params.Container, err)
	}

	d := &driver{
		Conn:           ct,
		Container:      params.Container,
		Prefix:         params.Prefix,
		ChunkSize:      params.ChunkSize,
		TempURLMethods: make([]string, 0),
		AccessKey:      params.AccessKey,
	}

	info := swiftInfo{}
	if config, err := d.Conn.QueryInfo(); err == nil {
		_, d.BulkDeleteSupport = config["bulk_delete"]

		if err := mapstructure.Decode(config, &info); err == nil {
			d.TempURLContainerKey = info.Swift.Version >= "2.3.0"
			d.TempURLMethods = info.Tempurl.Methods
		}
	} else {
		d.TempURLContainerKey = params.TempURLContainerKey
		d.TempURLMethods = params.TempURLMethods
	}

	if len(d.TempURLMethods) > 0 {
		secretKey := params.SecretKey
		if secretKey == "" {
			secretKey, _ = generateSecret()
		}

		// Since Swift 2.2.2, we can now set secret keys on containers
		// in addition to the account secret keys. Use them in preference.
		if d.TempURLContainerKey {
			_, containerHeaders, err := d.Conn.Container(d.Container)
			if err != nil {
				return nil, fmt.Errorf("Failed to fetch container info %s (%s)", d.Container, err)
			}

			d.SecretKey = containerHeaders["X-Container-Meta-Temp-Url-Key"]
			if d.SecretKey == "" || (params.SecretKey != "" && d.SecretKey != params.SecretKey) {
				m := swift.Metadata{}
				m["temp-url-key"] = secretKey
				if d.Conn.ContainerUpdate(d.Container, m.ContainerHeaders()); err == nil {
					d.SecretKey = secretKey
				}
			}
		} else {
			// Use the account secret key
			_, accountHeaders, err := d.Conn.Account()
			if err != nil {
				return nil, fmt.Errorf("Failed to fetch account info (%s)", err)
			}

			d.SecretKey = accountHeaders["X-Account-Meta-Temp-Url-Key"]
			if d.SecretKey == "" || (params.SecretKey != "" && d.SecretKey != params.SecretKey) {
				m := swift.Metadata{}
				m["temp-url-key"] = secretKey
				if err := d.Conn.AccountUpdate(m.AccountHeaders()); err == nil {
					d.SecretKey = secretKey
				}
			}
		}
	}

	return &Driver{
		baseEmbed: baseEmbed{
//.........這裏部分代碼省略.........