Object Storage Service:Bucket tagging (Node.js SDK)

Usage notes

• In this topic, the public endpoint of the China (Hangzhou) region is used. To access OSS from other Alibaba Cloud services in the same region, use an internal endpoint. For details about supported 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.

• 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 Configuration examples for common scenarios.

• Only the bucket owner and users who are granted the oss:PutBucketTagging permission can configure tags for buckets. If other users attempt to configure tags for buckets, the 403 Forbidden message that contains the AccessDenied error code is returned.

• You can configure up to 20 tags (key-value pairs) for each bucket.

• The key and value of a tag must be encoded in UTF-8.

• The key can be up to 64 characters in length. It is case-sensitive and cannot be empty. The key cannot start with http://, https://, or Aliyun. These prefixes are not case-sensitive.

• The value of a tag can be up to 128 characters in length and can be empty.

Set bucket tags

The following code provides an example of how to set tags for a bucket.

const OSS = require('ali-oss')

const client = new OSS({
  // Set region to the region where the bucket is located. For example, if the bucket is in the China (Hangzhou) region, set region to oss-cn-hangzhou.
  region: 'yourregion',
  // Obtain access credentials from environment variables. Before you run this code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are set.
  accessKeyId: process.env.OSS_ACCESS_KEY_ID,
  accessKeySecret: process.env.OSS_ACCESS_KEY_SECRET,
  authorizationV4: true,
  // Set bucket to the name of your bucket.
  bucket: 'yourBucketName',
});

// Set bucket tags.
async function putBucketTags(bucketName, tag) {
  try {
    const result = await client.putBucketTags(bucketName, tag);
    console.log(result);
  } catch (e) {
    console.log(e);
  }
}

const tag = { a: '1', b: '2' };
putBucketTags('yourBucketName', tag)

Get bucket tags

The following code provides an example of how to retrieve the tags of a bucket.

const OSS = require('ali-oss')

const client = new OSS({
  // Set region to the region where the bucket is located. For example, if the bucket is in the China (Hangzhou) region, set region to oss-cn-hangzhou.
  region: 'yourregion',
  // Obtain access credentials from environment variables. Before you run this code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are set.
  accessKeyId: process.env.OSS_ACCESS_KEY_ID,
  accessKeySecret: process.env.OSS_ACCESS_KEY_SECRET,
  authorizationV4: true,
  // Set bucket to the name of your bucket.
  bucket: 'yourBucketName',
});

// Get bucket tags.
async function getBucketTags(bucketName) {
  try {
    const result = await client.getBucketTags(bucketName);
    console.log(result);
  } catch (e) {
    console.log(e);
  }
}

getBucketTags('yourBucketName')

List buckets with specified tags

The following code provides an example on how to list the buckets with a specific tag:

const OSS = require('ali-oss')

const client = new OSS({
  // Set region to the region where the bucket is located. For example, if the bucket is in the China (Hangzhou) region, set region to oss-cn-hangzhou.
  region: 'yourregion',
  // Obtain access credentials from environment variables. Before you run this code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are set.
  accessKeyId: process.env.OSS_ACCESS_KEY_ID,
  accessKeySecret: process.env.OSS_ACCESS_KEY_SECRET,
  authorizationV4: true,
  // Set bucket to the name of your bucket.
  bucket: 'yourBucketName',

});

// List buckets with specified tags.
async function listBucketTags() {
  try {
    const params = {
      // Add the tag-key and tag-value fields to the params parameter of the listBuckets operation.
      'tag-key': 'yourTagKey',
      'tag-value': 'yourTagValue'
    }
    const result = await client.listBuckets(params);
    console.log(result);
  } catch (err) {
    console.log(err);
  }
}

listBucketTags();

Delete bucket tags

The following code provides an example of how to delete the tags of a bucket.

const OSS = require('ali-oss')

const client = new OSS({
  // Set region to the region where the bucket is located. For example, if the bucket is in the China (Hangzhou) region, set region to oss-cn-hangzhou.
  region: 'yourregion',
  // Obtain access credentials from environment variables. Before you run this code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are set.
  accessKeyId: process.env.OSS_ACCESS_KEY_ID,
  accessKeySecret: process.env.OSS_ACCESS_KEY_SECRET,
  authorizationV4: true,
  // Set bucket to the name of your bucket.
  bucket: 'yourBucketName',

});

// Delete bucket tags.
async function deleteBucketTags(bucketName) {
  try {
    const result = await client.deleteBucketTags(bucketName);
    console.log(result);
  } catch (e) {
    console.log(e);
  }
}

deleteBucketTags('yourBucketName')

References

• For the complete sample code for bucket tagging, see GitHub.

• For more information about the API operation used to set bucket tags, see PutBucketTags.

• For more information about the API operation used to retrieve bucket tags, see GetBucketTags.

• For more information about the API operation used to delete bucket tags, see DeleteBucketTags.