The transfer acceleration feature allows users worldwide to access objects stored in Object Storage Service (OSS) more quickly. This feature is applicable to scenarios in which data must be transferred over long geographical distances. This feature can also be used to download or upload large objects that are gigabytes or terabytes in size.
Usage notes
In this topic, the public endpoint of the China (Hangzhou) region is used. If you want to access OSS by using other Alibaba Cloud services in the same region as OSS, use an internal endpoint. For more information about the regions and endpoints supported by OSS, see Regions and endpoints.
In this topic, access credentials are obtained from environment variables. For more information about how to configure access credentials, see Configure access credentials.
In this topic, an OSSClient instance is created by using an OSS endpoint. If you want to create an OSSClient instance by using custom domain names or Security Token Service (STS), see Initialization.
Enable transfer acceleration
The following code provides an example on how to enable transfer acceleration for a bucket named examplebucket:
package main
import (
"fmt"
"os"
"github.com/aliyun/aliyun-oss-go-sdk/oss"
)
func HandleError(err error) {
fmt.Println("Error:", err)
os.Exit(-1)
}
func main() {
// Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured.
provider, err := oss.NewEnvironmentVariableCredentialsProvider()
if err != nil {
fmt.Println("Error:", err)
os.Exit(-1)
}
// Create an OSSClient instance.
// Specify the endpoint of the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the endpoint to https://oss-cn-hangzhou.aliyuncs.com. Specify your actual endpoint.
client, err := oss.New("yourEndpoint", "", "", oss.SetCredentialsProvider(&provider))
if err != nil {
fmt.Println("Error:", err)
os.Exit(-1)
}
// Specify the name of the bucket.
bucketName := "examplebucket"
// Enable transfer acceleration for the bucket.
// The Enabled parameter specifies whether to enable transfer acceleration. A value of true specifies that transfer acceleration is enabled. A value of false specifies that transfer acceleration is disabled.
accConfig := oss.TransferAccConfiguration{}
accConfig.Enabled = true
err = client.SetBucketTransferAcc(bucketName, accConfig)
if err != nil {
HandleError(err)
}
fmt.Printf("set bucket transfer accelerate success\n")
}
Query the transfer acceleration status of a bucket
The following code provides an example on how to query the transfer acceleration status of a bucket named examplebucket:
package main
import (
"fmt"
"os"
"github.com/aliyun/aliyun-oss-go-sdk/oss"
)
func HandleError(err error) {
fmt.Println("Error:", err)
os.Exit(-1)
}
func main() {
// Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured.
provider, err := oss.NewEnvironmentVariableCredentialsProvider()
if err != nil {
fmt.Println("Error:", err)
os.Exit(-1)
}
// Create an OSSClient instance.
// Specify the endpoint of the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the endpoint to https://oss-cn-hangzhou.aliyuncs.com. Specify your actual endpoint.
client, err := oss.New("yourEndpoint", "", "", oss.SetCredentialsProvider(&provider))
if err != nil {
fmt.Println("Error:", err)
os.Exit(-1)
}
// Specify the name of the bucket.
bucketName := "examplebucket"
// Query the transfer acceleration status of the bucket.
accConfig, err := client.GetBucketTransferAcc(bucketName)
if err != nil {
HandleError(err)
}
fmt.Printf("accConfigRes.Enabled:%T\n", accConfig.Enabled)
}
References
For more information about the API operation that you can call to enable transfer acceleration, see PutBucketTransferAcceleration.
For more information about the API operation that you can call to query the status of transfer acceleration, see GetBucketTransferAcceleration.