add multidownload

example/object/download.go

@@ -0,0 +1,57 @@
+package main
+
+import (
+	"context"
+	"net/http"
+	"net/url"
+	"os"
+
+	"fmt"
+	"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() {
+	u, _ := url.Parse("https://test-1259654469.cos.ap-guangzhou.myqcloud.com")
+	b := &cos.BaseURL{BucketURL: u}
+	c := cos.NewClient(b, &http.Client{
+		Transport: &cos.AuthorizationTransport{
+			SecretID:  os.Getenv("COS_SECRETID"),
+			SecretKey: os.Getenv("COS_SECRETKEY"),
+			Transport: &debug.DebugRequestTransport{
+				RequestHeader:  false,
+				RequestBody:    false,
+				ResponseHeader: false,
+				ResponseBody:   false,
+			},
+		},
+	})
+
+	opt := &cos.MultiDownloadOptions{
+		ThreadPoolSize: 5,
+	}
+	resp, err := c.Object.Download(
+		context.Background(), "test", "./test1G", opt,
+	)
+	log_status(err)
+	fmt.Printf("done, %v\n", resp.Header)
+}