Delete object tags using Go

Prerequisites

Before you begin, ensure that you have:

• The oss:DeleteObjectTagging permission. For more information, see Attach a custom policy to a RAM user.

• Configured access credentials in the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables. For more information, see Configure access credentials.

Usage notes

• The examples in this topic use the public endpoint for the China (Hangzhou) region. To access OSS from other Alibaba Cloud services in the same region, use an internal endpoint instead. For more information, see Regions and endpoints.

• The examples create an OSSClient instance using an OSS endpoint. To create an instance using a custom domain name or Security Token Service (STS), see Configure OSSClient instances.

Delete tags from an object

Both scenarios use the same method. The only difference is whether you pass a version ID:

package main

import (
	"fmt"
	"os"

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

func main() {
	// Load credentials from environment variables.
	// Set OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET before running this example.
	provider, err := oss.NewEnvironmentVariableCredentialsProvider()
	if err != nil {
		fmt.Println("Error:", err)
		os.Exit(-1)
	}

	// Create an OSSClient instance.
	// Replace yourEndpoint with the endpoint for your bucket's region,
	// for example, https://oss-cn-hangzhou.aliyuncs.com for China (Hangzhou).
	// Replace yourRegion with the region ID, for example, cn-hangzhou.
	clientOptions := []oss.ClientOption{oss.SetCredentialsProvider(&provider)}
	clientOptions = append(clientOptions, oss.Region("yourRegion"))
	clientOptions = append(clientOptions, oss.AuthVersion(oss.AuthV4))
	client, err := oss.New("yourEndpoint", "", "", clientOptions...)
	if err != nil {
		fmt.Println("Error:", err)
		os.Exit(-1)
	}

	// Specify the bucket name and the full object path (excluding the bucket name).
	bucketName := "examplebucket"
	objectName := "exampledir/exampleobject.txt"

	bucket, err := client.Bucket(bucketName)
	if err != nil {
		fmt.Println("Error:", err)
		os.Exit(-1)
	}

	// Delete all tags from the object.
	err = bucket.DeleteObjectTagging(objectName)
	if err != nil {
		fmt.Println("Error:", err)
		os.Exit(-1)
	}
	fmt.Println("Object tags deleted.")
}

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() {
	// Load credentials from environment variables.
	// Set OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET before running this example.
	provider, err := oss.NewEnvironmentVariableCredentialsProvider()
	if err != nil {
		fmt.Println("Error:", err)
		os.Exit(-1)
	}

	// Create an OSSClient instance.
	// Replace yourEndpoint with the endpoint for your bucket's region,
	// for example, https://oss-cn-hangzhou.aliyuncs.com for China (Hangzhou).
	// Replace yourRegion with the region ID, for example, cn-hangzhou.
	clientOptions := []oss.ClientOption{oss.SetCredentialsProvider(&provider)}
	clientOptions = append(clientOptions, oss.Region("yourRegion"))
	clientOptions = append(clientOptions, oss.AuthVersion(oss.AuthV4))
	client, err := oss.New("yourEndpoint", "", "", clientOptions...)
	if err != nil {
		HandleError(err)
	}

	// Specify the bucket name, the full object path, and the version ID.
	bucketName := "examplebucket"
	objectName := "exampledir/exampleobject.txt"
	versionId := "CAEQMxiBgICAof2D0BYiIDJhMGE3N2M1YTI1NDQzOGY5NTkyNTI3MGYyMzJm****"

	bucket, err := client.Bucket(bucketName)
	if err != nil {
		HandleError(err)
	}

	// Delete all tags from the specified version of the object.
	err = bucket.DeleteObjectTagging(objectName, oss.VersionId(versionId))
	if err != nil {
		fmt.Println("Error:", err)
		os.Exit(-1)
	}
	fmt.Println("Object tags deleted.")
}

What's next

• Object tagging