yejingx / go-sdk

UPYUN Go SDK

UPYUN Go SDK

UPYUN Go SDK make it easy to use UPYUN API!

Example

u := upyun.NewUpYun("bucket", "username", "password")

// Get bucket usage
usage, err := u.Usage()

// Make dir
err := u.Mkdir("/foo/bar")

// Delete
err := u.Delete("/foo/bar1.txt")

// Get dir info list
info, err := u.GetList("/foo")

// Download
// io.Writer
buf := &bytes.Buffer{}
err := u.Get("/foo/bar2.txt", buf)
// os.File
file, err := os.Open("./abc.txt")
err := u.Get("/foo/bar3.txt", file)

// Upload
// os.File
file, err := os.Open("./abc.txt")
u.Put("/foo/bar2.txt", file, false, "")
// io.Reader
buf := &bytes.Buffer{}
_, err := io.Copy(buf, file)
u.Put("/foo/bar2.txt", buf, false, "")

// Purge
resp, err := u.Purge([]string{"/foo/bar.txt", "/foo/bar1.txt"})

// Form API
uf := upyun.NewUpYunForm("bucket", "form_api_key")
uf.Put("/foo/bar.txt", "./abc.txt", 100, nil)

Installation

go install github.com/upyun/go-sdk/upyun

Set chunk size

(Default: 32kb)

Chunk size is a size of a buffer which user use it to do copy operation, Golang's io.Copy have it hard coded at 32kb. This may not good for some cases, you can change it with anysize.

Example

var chunksize int = 1024
upyun.SetChunkSize(chunksize)

Set Endpoints

(Default: Auto)

1. Auto: Auto detect by user network
2. Telecom: (ISP) China Telecom
3. Cnc: (ISP) China Unicom
4. Ctt: (ISP) China Tietong

Example

u := upyun.NewUpYun("bucket", "username", "password")
u.SetEndpoint(upyun.Auto)

uf := upyun.NewUpYunForm("bucket", "form_api_key")
uf.SetEndpoint(upyun.Auto)

Set Connect Timeout

(Default: 60)

Set the connection timeout when connect to endpoint

Example

u := upyun.NewUpYun("bucket", "username", "password")
u.SetTimeout(30)

uf := upyun.NewUpYunForm("bucket", "form_api_key")
uf.SetTimeout(30)

HTTP REST API

New

func NewUpYun(bucket, username, passwd string) *UpYun

Create a UpYun instance with your bucket infomation(bucketname, username, password), using this instance, you can upload, download, get file info, etc.

Try to reuse one instance will make it faster!

Example

u := upyun.NewUpYun("bucket", "username", "password")

Usage

func (u *UpYun) Usage() (int64, error)

Get the usage of a bucket, if bucket infomation incorrect or err's not nil, it will return zero, otherwise, it return how many storage have been used by this bucket.

Example

u := upyun.NewUpYun("bucket", "username", "password")
usage, err := u.Usage()
if err != nil {
	fmt.Println(err)
} else {
	fmt.Println(usage)
}

Mkdir

func (u *UpYun) Mkdir(key string) error

As it means, it will create a directory recursively.

Example

remote_dir := "/foo/bar/foo"

u := upyun.NewUpYun("bucket", "username", "password")
err := u.Mkdir(remote_dir)
if err != nil {
	fmt.Println(err)
} else {
	fmt.Println("Successful make directory " + remote_dir)
}

Delete

func (u *UpYun) Delete(key string) error

Delete a file or an empty directory.

Example

u := upyun.NewUpYun("bucket", "username", "password")

err := u.Delete("/foo")

GetList

func (u *UpYun) GetList(key string) ([]Info, error)

Get a list of file information of the specified directory.

Example

u := upyun.NewUpYun("bucket", "username", "password")

list, err := u.GetList("/foo")
if err != nil {
	fmt.Println(err)
} else {
	for _, fi := range list {
		fmt.Println(fi)
	}
}

GetInfo

func (u *UpYun) GetInfo(key string) (FileInfo, error)

Get file information of the specified file.

Example

u := upyun.NewUpYun("bucket", "username", "password")

info, err := u.GetInfo("/foo/bar1.txt")
if err != nil {
	fmt.Println(err)
} else {
	fmt.Println(info)
}

Put

func (u *UpYun) Put(key string, value io.Reader, md5 bool, secret string) (string, error)

Upload io.Reader to remote file.

• key: remote file path
• value: a io.Reader where data is stored
• md5: set md5 to true to enable remote server's md5 chunksum, otherwise(false) not.
• secret: encrypt picture, with specified this argument, origin picture is no longer available, you should add !secret after origin picture's URL, like this, http://bucket.b0.upaiyun.com/sample.jpg!secret (origin picture is http://bucket.b0.upaiyun.com/sample.jpg). Zero value of string("") means no encrypt.

Example

u := upyun.NewUpYun("bucket", "username", "password")
file, err := os.Open("./abc.txt")

// resp will have some response headers which include origin picture's args if upload picture.
resp, err := u.Put("/foo/bar.txt", file, false, "")
if err != nil {
	fmt.Println(err)
} else {
	fmt.Println(resp)
}

Get

func (u *UpYun) Get(key string, value io.Writer) error

Download remote file to a io.Writer

• key: remote file path
• value: a io.Writer use to store data

Example

u := upyun.NewUpYun("bucket", "username", "password")

buf := &bytes.Buffer{}
err := u.Get("/foo/bar.txt", buf)
if err != nil {
	fmt.Println(err)
}

Purge

func (u *UpYun) Purge(urls []string) (string, error)

Purge files cache.

When Purge successfully, return with invalid urls and nil.

otherwise, return "" and error.

Example

u := upyun.NewUpYun("bucket", "username", "password")

invalidURL, err := u.Purge([]string{"http://bucket.b0.upaiyun.com/sample.jpg", "http://bucket.b0.upaiyun.com/sample1.jpg"})
if err != nil {
	fmt.Println(err)
} else {
	fmt.Println(invalidURL)
}

HTTP FORM API

New

func NewUpYunForm(bucket, key string) *UpYunForm

Create a instance of form api, the reason why separate it and REST API is the auth is different.

Example

uf := upyun.NewUpYunForm("chengzi", "your_bucket_form_key")

Put

func (uf *UpYunForm) Put(saveas, path string, expireAfter int64, options map[string]string) error

Upload a file to remote path

• saveas: remote file path
• path: local file path
• expireAfter: request will expire after this time
• options: nil if nothing have to specified, otherwise look up here.

Example

uf := upyun.NewUpYunForm("chengzi", "your_bucket_form_key")

err := uf.Put("/foo/bar1.txt", "./abc.txt", 100, nil)
if err != nil {
	fmt.Println(err)
}

Contributor

Thanks for these guys' contribution!

• luanzhu

• Wine93