Object Storage Service:Delete object tags (Go SDK V2)

Prerequisites

Before you begin, ensure that you have:

• An OSS bucket with the object whose tags you want to delete

• Access credentials configured in environment variables. For details, see Configure access credentials.

• The oss:DeleteObjectTagging permission granted to your RAM user. For details, see Grant custom policy to RAM users.

Usage notes

• The sample code uses cn-hangzhou as the region ID. By default, a public endpoint is used. To use an internal endpoint for same-region Alibaba Cloud service communication, see OSS regions and endpoints.

• Object tagging uses key-value pairs to identify objects. For background information, see Object tagging.

• For the underlying API specification, see DeleteObjectTagging.

Delete object tags

The following example deletes all tags from a specified object. After the call succeeds, the object has no tags.

Parameters

Sample code

package main

import (
	"context"
	"flag"
	"log"

	"github.com/aliyun/alibabacloud-oss-go-sdk-v2/oss"
	"github.com/aliyun/alibabacloud-oss-go-sdk-v2/oss/credentials"
)

// Define global variables.
var (
	region     string // Region in which the bucket is located.
	bucketName string // Name of the bucket.
	objectName string // Name of the object.
)

// Specify the init function used to initialize command line parameters.
func init() {
	flag.StringVar(&region, "region", "", "The region in which the bucket is located.")
	flag.StringVar(&bucketName, "bucket", "", "The name of the bucket.")
	flag.StringVar(&objectName, "object", "", "The name of the object.")
}

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

	// Check whether the name of the bucket is specified.
	if len(bucketName) == 0 {
		flag.PrintDefaults()
		log.Fatalf("invalid parameters, bucket name required")
	}

	// Check whether the region is specified.
	if len(region) == 0 {
		flag.PrintDefaults()
		log.Fatalf("invalid parameters, region required")
	}

	// Check whether the name of the object is specified.
	if len(objectName) == 0 {
		flag.PrintDefaults()
		log.Fatalf("invalid parameters, object name required")
	}

	// Load the default configurations and specify the credential provider and region.
	cfg := oss.LoadDefaultConfig().
		WithCredentialsProvider(credentials.NewEnvironmentVariableCredentialsProvider()).
		WithRegion(region)

	// Create an OSS client.
	client := oss.NewClient(cfg)

	// Create a request to delete the tags of the object.
	request := &oss.DeleteObjectTaggingRequest{
		Bucket: oss.Ptr(bucketName), // Name of the bucket.
		Key:    oss.Ptr(objectName), // Name of the object.
	}

	// Delete the tags and process the results.
	result, err := client.DeleteObjectTagging(context.TODO(), request)
	if err != nil {
		log.Fatalf("failed to delete object tagging %v", err)
	}

	// Display the result.
	log.Printf("delete object tagging result:%#v\n", result)
}

For the complete sample, see the GitHub repository.

What's next

• For the full API reference, see DeleteObjectTagging.