Object Storage Service:Query the storage capacity of a bucket (Go SDK V1)

Notes

• In this topic, the public endpoint of the China (Hangzhou) region is used. If you want to access OSS from other Alibaba Cloud services in the same region as OSS, use an internal endpoint. For more information about OSS regions and endpoints, 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.

• This topic demonstrates creating an OSSClient instance with an OSS endpoint. For alternative configurations, such as using a custom domain or authenticating with credentials from Security Token Service (STS), see Configure a client (Go SDK V1).

• The following sample code uses properties that are supported in Go SDK 2.2.5 and later.

Sample code

The following code retrieves the storage capacity of a bucket named examplebucket, and the number and storage capacity of objects for each storage class in the bucket.

package main

import (
	"log"

	"github.com/aliyun/aliyun-oss-go-sdk/oss"
)

func main() {
	// Obtain access credentials from environment variables.
	provider, err := oss.NewEnvironmentVariableCredentialsProvider()
	if err != nil {
		log.Fatalf("Failed to get credentials from environment variables: %v", err)
	}

	// Create an OSSClient instance.
	// Set yourEndpoint to the endpoint of the bucket. For example, for the China (Hangzhou) region, set the endpoint to https://oss-cn-hangzhou.aliyuncs.com. For other regions, specify the actual endpoint.
	// Set yourRegion to the region where the bucket is located. For example, for the China (Hangzhou) region, set the region to cn-hangzhou. For other regions, specify the actual region.
	clientOptions := []oss.ClientOption{oss.SetCredentialsProvider(&provider)}
	clientOptions = append(clientOptions, oss.Region("yourRegion"))
	// Set the signature version.
	clientOptions = append(clientOptions, oss.AuthVersion(oss.AuthV4))
	client, err := oss.New("yourEndpoint", "", "", clientOptions...)
	if err != nil {
		log.Fatalf("Failed to create new OSS client: %v", err)
	}

	// Specify the bucket name. For example, examplebucket.
	bucketName := "examplebucket"
	stat, err := client.GetBucketStat(bucketName)
	if err != nil {
		log.Fatalf("Failed to get bucket statistics for bucket '%s': %v", bucketName, err)
	}

	// Get the total storage capacity of the bucket in bytes.
	log.Printf("Bucket Stat Storage: %d bytes\n", stat.Storage)
	// Get the total number of objects in the bucket.
	log.Printf("Bucket Stat Object Count: %d\n", stat.ObjectCount)
}

Common storage capacity information

References

• For more information about the bucket storage capacity API, see BucketStat.