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package main
import (
"bytes"
"context"
"fmt"
"io/ioutil"
"net/http"
"net/url"
"os"
"time"
"github.com/tencentyun/cos-go-sdk-v5"
"github.com/tencentyun/cos-go-sdk-v5/debug"
)
func log_status(err error) {
if err == nil {
return
}
if cos.IsNotFoundError(err) {
// WARN
fmt.Println("WARN: Resource is not existed")
} else if e, ok := cos.IsCOSError(err); ok {
fmt.Printf("ERROR: Code: %v\n", e.Code)
fmt.Printf("ERROR: Message: %v\n", e.Message)
fmt.Printf("ERROR: Resource: %v\n", e.Resource)
fmt.Printf("ERROR: RequestId: %v\n", e.RequestID)
// ERROR
} else {
fmt.Printf("ERROR: %v\n", err)
// ERROR
}
}
func main() {
ak := os.Getenv("COS_SECRETID")
sk := os.Getenv("COS_SECRETKEY")
u, _ := url.Parse("https://test-1253846586.cos.ap-guangzhou.myqcloud.com")
b := &cos.BaseURL{BucketURL: u}
c := cos.NewClient(b, &http.Client{
Transport: &cos.AuthorizationTransport{
SecretID: ak,
SecretKey: sk,
Expire: time.Hour,
Transport: &debug.DebugRequestTransport{
RequestHeader: true,
RequestBody: true,
ResponseHeader: true,
ResponseBody: true,
},
},
})
name := "test"
ctx := context.Background()
// Normal header way to get object
resp, err := c.Object.Get(ctx, name, nil)
log_status(err)
bs, _ := ioutil.ReadAll(resp.Body)
resp.Body.Close()
// Get presigned
presignedURL, err := c.Object.GetPresignedURL(ctx, http.MethodGet, name, ak, sk, time.Hour, nil)
log_status(err)
// Get object by presinged url
resp2, err := http.Get(presignedURL.String())
log_status(err)
bs2, _ := ioutil.ReadAll(resp2.Body)
resp2.Body.Close()
fmt.Printf("result2 is : %s\n", string(bs2))
fmt.Printf("%v\n\n", bytes.Compare(bs2, bs) == 0)
}