Object Storage Service:Block public access for buckets (Go SDK V2)

You can use the following code to enable Block Public Access for a bucket.

package main

import (
	"context" 
	"flag"    
	"log"     

	"github.com/aliyun/alibabacloud-oss-go-sdk-v2/oss"           // The SDK package for Alibaba Cloud OSS.
	"github.com/aliyun/alibabacloud-oss-go-sdk-v2/oss/credentials" // The package for processing authentication information.
)

var (
	region     string // Define a variable to store the region information obtained from the command line.
	bucketName string // Define a variable to store the bucket name obtained from the command line.
)

// The init function is executed before the main function to initialize the program.
func init() {
	// Set the command-line parameter to specify the region. The default value is an empty string.
	flag.StringVar(&region, "region", "", "The region in which the bucket is located.")
	// Set the command-line parameter to specify the bucket name. The default value is an empty string.
	flag.StringVar(&bucketName, "bucket", "", "The name of the bucket.")
}

func main() {
	flag.Parse() // Parse command-line parameters.

	// Check whether a bucket name is provided. If not, print the default parameters and exit the program.
	if len(bucketName) == 0 {
		flag.PrintDefaults()
		log.Fatalf("invalid parameters, bucket name required") // Record the error and terminate the program.
	}

	// Check whether region information is provided. If not, print the default parameters and exit the program.
	if len(region) == 0 {
		flag.PrintDefaults()
		log.Fatalf("invalid parameters, region required") // Record the error and terminate the program.
	}

	// Create a configuration object, use environment variables as the credential provider, and specify the region.
	cfg := oss.LoadDefaultConfig().
		WithCredentialsProvider(credentials.NewEnvironmentVariableCredentialsProvider()).
		WithRegion(region)

	client := oss.NewClient(cfg) // Use the configuration to create an OSS client instance.

	// Create a PutBucketPublicAccessBlockRequest object to set the Block Public Access configuration for a specific bucket.
	request := &oss.PutBucketPublicAccessBlockRequest{
		Bucket: oss.Ptr(bucketName), // Specify the name of the bucket to operate.
		PublicAccessBlockConfiguration: &oss.PublicAccessBlockConfiguration{
			oss.Ptr(true), // Enable the Block Public Access configuration.
		},
	}
	putResult, err := client.PutBucketPublicAccessBlock(context.TODO(), request) // Execute the request to set Block Public Access.
	if err != nil {
		log.Fatalf("failed to put bucket public access block %v", err) // If an error occurs, record the error message and terminate the program.
	}

	log.Printf("put bucket public access block result:%#v\n", putResult) // Print the result of setting Block Public Access.
}

You can use the following code to query the Block Public Access configuration for a bucket.

package main

import (
	"context" 
	"flag"    
	"log"     

	"github.com/aliyun/alibabacloud-oss-go-sdk-v2/oss"           // The SDK package for Alibaba Cloud OSS.
	"github.com/aliyun/alibabacloud-oss-go-sdk-v2/oss/credentials" // The package for processing authentication information.
)

var (
	region     string // Define a variable to store the region information obtained from the command line.
	bucketName string // Define a variable to store the bucket name obtained from the command line.
)

// The init function is executed before the main function to initialize the program.
func init() {
	// Set the command-line parameter to specify the region. The default value is an empty string.
	flag.StringVar(&region, "region", "", "The region in which the bucket is located.")
	// Set the command-line parameter to specify the bucket name. The default value is an empty string.
	flag.StringVar(&bucketName, "bucket", "", "The name of the bucket.")
}

func main() {
	flag.Parse() // Parse command-line parameters.

	// Check whether a bucket name is provided. If not, print the default parameters and exit the program.
	if len(bucketName) == 0 {
		flag.PrintDefaults()
		log.Fatalf("invalid parameters, bucket name required") // Log the fatal error and terminate the program.
	}

	// Check whether region information is provided. If not, print the default parameters and exit the program.
	if len(region) == 0 {
		flag.PrintDefaults()
		log.Fatalf("invalid parameters, region required") // Log the fatal error and terminate the program.
	}

	// Create a configuration object, use environment variables as the credential provider, and specify the region.
	cfg := oss.LoadDefaultConfig().
		WithCredentialsProvider(credentials.NewEnvironmentVariableCredentialsProvider()).
		WithRegion(region)

	client := oss.NewClient(cfg) // Use the configuration to create an OSS client instance.

	// Create a GetBucketPublicAccessBlockRequest object to obtain the Block Public Access settings for a specific bucket.
	request := &oss.GetBucketPublicAccessBlockRequest{
		Bucket: oss.Ptr(bucketName), // Specify the name of the bucket to query.
	}
	getResult, err := client.GetBucketPublicAccessBlock(context.TODO(), request) // Execute the request to obtain the Block Public Access status.
	if err != nil {
		log.Fatalf("failed to get bucket public access block %v", err) // If an error occurs, record the error message and terminate the program.
	}

	log.Printf("get bucket public access block result:%#v\n", getResult) // Print the obtained Block Public Access result.
}

You can use the following code to delete the Block Public Access configuration for a specified bucket.

package main

import (
	"context" 
	"flag"   
	"log"  

	"github.com/aliyun/alibabacloud-oss-go-sdk-v2/oss"           // The SDK package for Alibaba Cloud OSS.
	"github.com/aliyun/alibabacloud-oss-go-sdk-v2/oss/credentials" // The package for processing authentication information.
)

var (
	region     string // Define a variable to store the region information obtained from the command line.
	bucketName string // Define a variable to store the bucket name obtained from the command line.
)

// The init function is executed before the main function to initialize the program.
func init() {
	// Set the command-line parameter to specify the region. The default value is an empty string.
	flag.StringVar(&region, "region", "", "The region in which the bucket is located.")
	// Set the command-line parameter to specify the bucket name. The default value is an empty string.
	flag.StringVar(&bucketName, "bucket", "", "The name of the bucket.")
}


func main() {
	flag.Parse() // Parse command-line parameters.

	// Check whether a bucket name is provided. If not, print the default parameters and exit the program.
	if len(bucketName) == 0 {
		flag.PrintDefaults()
		log.Fatalf("invalid parameters, bucket name required") // Log the fatal error and terminate the program.
	}

	// Check whether region information is provided. If not, print the default parameters and exit the program.
	if len(region) == 0 {
		flag.PrintDefaults()
		log.Fatalf("invalid parameters, region required") // Log the fatal error and terminate the program.
	}

	// Create a configuration object, use environment variables as the credential provider, and specify the region.
	cfg := oss.LoadDefaultConfig().
		WithCredentialsProvider(credentials.NewEnvironmentVariableCredentialsProvider()).
		WithRegion(region)

	client := oss.NewClient(cfg) // Use the configuration to create an OSS client instance.

	// Create a DeleteBucketPublicAccessBlockRequest object to delete the Block Public Access settings for a specific bucket.
	request := &oss.DeleteBucketPublicAccessBlockRequest{
		Bucket: oss.Ptr(bucketName), // Specify the name of the bucket to operate.
	}
	result, err := client.DeleteBucketPublicAccessBlock(context.TODO(), request) // Execute the request to delete the Block Public Access settings.
	if err != nil {
		log.Fatalf("failed to delete bucket public access block %v", err) // If an error occurs, record the error message and terminate the program.
	}

	log.Printf("delete bucket public access block result:%#v\n", result) // Print the result of deleting the Block Public Access settings.
}