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Object Storage Service:Determine whether a bucket exists

Last Updated:Oct 19, 2023

A bucket is a container used to store objects in Object Storage Service (OSS). Every object is contained in a bucket. This topic describes how to determine whether a bucket exists.

Sample code

The following code provides an example on how to determine whether a specific bucket exists:

const OSS = require('ali-oss')
const client = new OSS({
  // Specify the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the region to oss-cn-hangzhou. 
  region: 'yourregion',
  // Obtain access credentials from environment variables. Before you run the sample code, make sure that you have configured environment variables OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET. 
  accessKeyId: process.env.OSS_ACCESS_KEY_ID,
  accessKeySecret: process.env.OSS_ACCESS_KEY_SECRET,
});

async function bucketisExist() {
  try {
    // Specify the name of the bucket. 
    const result = await client.getBucketInfo('Yourbucketname')
    console.log('bucketInfo: ', result.bucket)
  } catch (error) {
    // Determine whether the specified bucket exists. 
    if (error.name === 'NoSuchBucketError') {
      console.log('Bucket does not exist');
    } else {
      console.log(error)
    }
  }
}
bucketisExist()