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92 lines
2.2 KiB
92 lines
2.2 KiB
package main
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import (
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"context"
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"fmt"
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"io"
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"io/ioutil"
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"net/http"
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"net/url"
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"os"
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"github.com/tencentyun/cos-go-sdk-v5"
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"github.com/tencentyun/cos-go-sdk-v5/debug"
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)
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func log_status(err error) {
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if err == nil {
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return
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}
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if cos.IsNotFoundError(err) {
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// WARN
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fmt.Println("WARN: Resource is not existed")
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} else if e, ok := cos.IsCOSError(err); ok {
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fmt.Printf("ERROR: Code: %v\n", e.Code)
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fmt.Printf("ERROR: Message: %v\n", e.Message)
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fmt.Printf("ERROR: Resource: %v\n", e.Resource)
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fmt.Printf("ERROR: RequestId: %v\n", e.RequestID)
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// ERROR
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} else {
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fmt.Printf("ERROR: %v\n", err)
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// ERROR
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}
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}
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func main() {
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u, _ := url.Parse("https://test-1259654469.cos.ap-guangzhou.myqcloud.com")
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b := &cos.BaseURL{BucketURL: u}
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c := cos.NewClient(b, &http.Client{
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Transport: &cos.AuthorizationTransport{
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SecretID: os.Getenv("COS_SECRETID"),
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SecretKey: os.Getenv("COS_SECRETKEY"),
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Transport: &debug.DebugRequestTransport{
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RequestHeader: true,
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RequestBody: true,
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ResponseHeader: true,
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ResponseBody: false,
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},
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},
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})
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// Case1 通过resp.Body下载对象，Body需要关闭
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name := "test/example"
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resp, err := c.Object.Get(context.Background(), name, nil)
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log_status(err)
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bs, _ := ioutil.ReadAll(resp.Body)
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resp.Body.Close()
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fmt.Printf("%s\n", string(bs))
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// Case2 下载对象到文件. Body需要关闭
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fd, err := os.OpenFile("test", os.O_WRONLY|os.O_CREATE, 0660)
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log_status(err)
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defer fd.Close()
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resp, err = c.Object.Get(context.Background(), name, nil)
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log_status(err)
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io.Copy(fd, resp.Body)
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resp.Body.Close()
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// Case3 下载对象到文件
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_, err = c.Object.GetToFile(context.Background(), name, "test", nil)
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log_status(err)
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// Case4 range下载对象，可以根据range实现并发下载
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opt := &cos.ObjectGetOptions{
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ResponseContentType: "text/html",
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Range: "bytes=0-3",
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}
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resp, err = c.Object.Get(context.Background(), name, opt)
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log_status(err)
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bs, _ = ioutil.ReadAll(resp.Body)
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resp.Body.Close()
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fmt.Printf("%s\n", string(bs))
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// Case5 下载对象到文件，查看下载进度
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opt = &cos.ObjectGetOptions{
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Listener: &cos.DefaultProgressListener{},
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}
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_, err = c.Object.GetToFile(context.Background(), name, "test", opt)
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log_status(err)
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}
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